Minor Planet Lightcurves

Asteroid Lightcurves and Plots to Date

The data presented here is for reference and is copyrighted (2003, 2004, 2005, 2006, 2007, 2008 - David Higgins).  It has been or is planned for publication in the Minor Planet Bulletin or via other means through the Principal Observer (PO) or Principal Investigator (PI) in the case of collaborations. 

My data and results are available below.  Note that some results are the results of collaboration.  Collaborative data is generally NOT supplied.

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Targets Details
(24) Themis^
[Data]
 
PI/PO is Colin Bembrick of Bathurst.  Results published in the Minor Planet Bulletin

(36) Atalante
9.921 + 0.002h
0.10m + 0.01m
[Data] U=3

 

Obs Start: 22 May 2008
Obs End: 06 June 2008
Sessions: 6 (174 observations used)
0.36m SCT at f/4, SBIG ST-8E, 240s
Target chosen in support of Shape Modeling.
 

(105) Artemis
37.2 + 0.1h
0.17m + 0.01m
[Data] U=2+

Expected:
16.84hr Ref
18.56hr Ref

Obs Start: 18 March 2006
Obs End: 22 May 2006
Sessions: 17 (396 observations used)
0.36m SCT at f/5.6, SBIG ST-9E, 60 s and at f/4, SBIG ST-8E at Bin 2, 30 s 'V' and 'R' filters.
Target being done at the request of PI Dr Ellen Howell of Arecibo in conjunction with their radar observations of this target.
 

(161) Athor
14.572 + 0.003h
0.09m + 0.01m
[Data] U=3
 

Obs Start: 17 March 2008
Obs End: 03 April 2008
Sessions: 7 (348 observations used)
0.36m SCT at f/4, SBIG ST-8E, 30s
Additional data has been taken by Frederick Pilcher.  Awaiting data cleanup before joining the data in.
 

(172) Baucis^
[Data]
 
PI/PO is Colin Bembrick of Bathurst.  Results published in the Minor Planet Bulletin

(175) Andromache
8.324h + 0.004h
0.28m + 0.01m
[Data] U=3

Obs Start: 01 April 2008
Obs End: 03 April 2008
Sessions: 2 (134 Observations)
0.36m SCT at f/4, SBIG ST-8E, 30 s
 

(244) Sita *^
129.1h + 0.1h
0.7m + 0.02m
[Data] U=2

Obs Start: 29 April 2008
Obs End: 24 May 2008
Sessions: 9 (101 Observations)
0.36m SCT at f/4, SBIG ST-8E, 240 s
Target observed in collaboration with Jim Brinsfield
 

(279) Thule *^
15.931 + 0.01h OR
23.90h + 0.01h
0.05m + 0.005m
[Data] U=2

Obs Start: 09 May 2008
Obs End: 29 May 2008
Sessions: 8 (141 Observations)
0.36m SCT at f/4, SBIG ST-8E, 240 s
A Japanese group believe that they have uncovered a binary signature during the current apparition but my data does not confirm this.  Don at Carbuncle Hill is also observing and will take the lead on this target.

 

(298) Baptistina ^
8.27h + 0.03h
16.22 + 0.02
0.12m + 0.02m
[Data] U=3

Obs Start: 23 April 2008
Obs End: 25 April 2008
Sessions: 3 (221 observations)
0.36m SCT at f/4, SBIG ST-8E, 30 s
Of interest is that the previously defined periods indicate something in the order of 9 hrs.  However, my data indicates that the peaks from each night have different amplitudes.  Perhaps this is just the monomodal plot and the real period is 16.22hrs!
 

(319) Leona*
[Data]

Obs Start: 18 December 2004
Obs End: 18 December 2004
Sessions: 1 (200 observations)
0.36m SCT at f/2.95, SX MX716, 120 s
 

(332) Siri
8.0072h + 0.0004h
0.15m + 0.01m
[Data] U=3

Obs Start: 14 March 2008
Obs End: 31 March 2008
Sessions: 5 (2) (389 Observations)
0.36m SCT at f/4, SBIG ST-8E, 180 s
Brian Warner of PDO has assisted as I could not fit his 6hr period from the targets recent apparition.  Combined data has ruled out his period of just over 6hrs.
 

(426) Hippo *
>24 + 0.0h
>0.18m + 0.01m
[Data] U=1

Obs Start: 01 April 2008
Obs End: 11 April 2008
Sessions: 6 (178 Observations)
0.36m SCT at f/4, SBIG ST-8E, 30 s
Lightcurve Parameter list puts target at ~34hrs.  At present I can do nothing but rule out the 34hr period.
 

(443) Photographica ^
19.7864 + 0.0008h
0.24m + 0.01m
[Data] U=3

Obs Start: 09 February 2008
Obs End: 16 March 2008
Sessions: 6(3) (619 Observations)
0.36m SCT at f/4, SBIG ST-8E, 30 s
Additional Data taken by Jim BrinsfieldRobert Buchheim, Altimira Observatory, California, supplied an additional 2 nights data from 9/10 February 2008 after the results were published that extended the observational; period by a month.
 

(479) Caprera
9.4277h + 0.0004h
0.12m + 0.01m
[Data] U=3

Obs Start: 23 October 2004
Obs End: 17 November 2004
Sessions: 5 (780 Observations)
0.36m SCT at f/2.95, SX MX716, 60/120 s
 

(505) Cava
8.1787h + 0.0002h
0.15m + 0.01m
[Data] U=3

Obs Start: 30 October 2004
Obs End: 25 November 2004
Sessions: 5 (540 Observations)
0.36m SCT at f/2.95, SX MX716, 15/30 s
 

(547) Praxedis
9.106h + 0.002h
0.09m + 0.01m
[Data] U=3

Obs Start: 16 March 2008
Obs End: 28 March 2008
Sessions: 5 (243 Observations)
0.36m SCT at f/4, SBIG ST-8E, 120 s
 

(554) Peraga
13.714h + 0.002h
0.2m + 0.01m
[Data] U=3

Obs Start: 24 October 2006
Obs End: 22 November 2006
Sessions: 9 (202 Observations)
0.36m SCT at f/4, SBIG ST-8E, 120 s
Observations carried out at the request of Dr Ellen Howell of Arecibo Observatory.  Period of 13.63hrs was assumed.  As I take my images in pairs I will often Bin 2 the plot to iron out 'noise'.  Data for this target has also been captured by Roger Dymock and Martin Crow from the UK.  Their data is consistent with mine.
 

(562) Salome
6.3501h + 0.00013h
0.35m + 0.005m
[Data] U=3

Obs Start: 18 October 2006
Obs End: 23 October 2006
Sessions: 5 (72 observations)
0.35m SCT at f/4, SBIG ST8E,240 s
CALL Target.  Chosen as it's listed as a catagory 1.  Previous determination of 10.14hrs with an amplitude of 0.14mag.  My data certainly does not agree with this.
 

(566) Stereoskopia *
7.801h + 0.004h
0.06m + 0.005m
[Data] U=2

Obs Start: 24 October 2006
Obs End: 17 November 2006
Sessions: 7 (134 observations)
0.35m SCT at f/4, SBIG ST8E,120 s
CALL Target.  Previous result of 17. with an amplitude of 0.08mag indicated by Harris, 2006.  This is a very low amplitude target.  Not suitable fit yet
 

(567) Eleutheria
7.726h + 0.004h
0.26m + 0.005m
[Data] U=3

Obs Start: 21 October 2006
Obs End: 23 October 2006
Sessions: 3 (60 observations)
0.35m SCT at f/4, SBIG ST8E,240 s
CALL Target.

(582) Olympia^
72.000h + 0.0059h
0.30m + 0.05m
[Data] U=2

Obs Start: 09 February 2003
Obs End: 20 March 2003
Sessions: 42 (4,000 observations)
0.25m SCT at f/4.3 to 0.3m SCT at f/6.3
SX MX516(2), SBIG ST7E, ST9E, Apogee AP7p, 60 to 120 s
This was my very first target.  I was PI/PO and there were 5 members of the observing team.
 

(605) Juvisia^
15.855h + 0.001h
0.26m + 0.02m
[Data] U=3

Obs Start: 21 September 2004
Obs End: 24 September 2004
Sessions: 2 (320 Observations) + Johns Data
0.36m SCT at f/2.95, 0.29m SCT at f/6.3, SX MX716, SBIG ST-7, 180 s
PI/PO was John Menke, Starlight Farm Observatory, Barnesdale, MD, USA
 

(654) Zelinda
31.99h + 0.01h
0.08m + 0.005m
[Data] U=2+

Obs Start: 09 September 2007
Obs End: 27 September 2007
Sessions: 8 (100 Observations)
0.36m SCT at f/4, SBIG ST-8E, 90 s
Observations in support of Radar work planned for 2008/2009.  PO Brian Warner.
 

(689) Zita
6.4248h + 0.001h
0.50m + 0.02m
[Data] U=3

Obs Start: 19 August 2004
Obs End: 22 August 2004
Sessions: 4 (279 Observations)
0.36m SCT at f/2.95, SX MX716, 180 s
 

(707) Steina *^
>32h + 0.0h
>0.12m + 0.01m
[Data] U=1

Obs Start: 25 September 2006
Obs End: 03 October 2006
Sessions: 8 (144 Observations)
0.36m SCT at f/4, SBIG ST-8E Bin 1, 240 s
Collaboration with PO John Menke of Starlight Farm Observatory, Barnsville, MD.  John has been following the target for over a month and getting nowhere so he sought assistance.  After 5 sessions (uncorrected Instrumental magnitude plot) it would appear that this target may have an extremely long period - in the vicinity of 360 hrs.
 

(774) Armor ^
25.15h + 0.02h
0.?m + 0.01m
[Data] U=3-

Obs Start: 18 April 2006
Obs End: 18 April 2006
Sessions: 1 (20 Observations)
0.36m SCT at f/4, SBIG ST-8E Bin 2, 180 s
Collaboration with PO Brian Warner of Palmer Divide
 

(865) Zubaida
11.363h + 0.004h
0.38m + 0.03m
[Data] U=2+

Obs Start: 04 January 2007
Obs End: 11 January 2007
Sessions: 5 (201 Observations)
0.36m SCT at f/5.6, SBIG ST-9E Bin 1, 240 s
This is probably as good as it gets this opposition.  Target was in a reasonably dense star field requiring the extensive use of MPO Canopus' StarBGone.
 

(894) Erda
4.6897h + 0.0003h
0.27m + 0.01m
[Data] U=3

Obs Start: 12 June 2006
Obs End: 24 Jun 2006
Sessions: 4 (186 Observations)
0.36m SCT at f/4, SBIG ST-8E, 180 s, 240 s
Target found on 11116 image field.  The CALL lightcurve list put it at a rating of 2.  It's a pretty definitive 3 now.
 

(898) Hildergard
24.855h + 0.002h
0.32m + 0.01m
[Data] U=3

Obs Start: 01 April 2008
Obs End: 14 May 2008
Sessions: 13 (289 Observations)
0.36m SCT at f/4, SBIG ST-8E, 240 s
 

(975) Perseverantia 
7.225h + 0.002h
0.18m + 0.01m
[Data] U=3

Obs Start: 04 April 2008
Obs End: 11 April 2008
Sessions: 3 (104 Observations)
0.36m SCT at f/4, SBIG ST-8E, 240 s
 

(981) Martina
>20h + 0.0h
0.3m + 0.02m
[Data] U=1

Obs Start: 23 August 2004
Obs End: 02 September 2004
Sessions: 4 (425 Observations)
0.36m SCT at f/2.95, SX MX716, 180 s
 

(1043) Beate ^
44h + 0.01h
0.2m + 0.01m
[Data] U=2

Obs Start: 21 April 2006
Obs End: 25 April 2006
Sessions: 4 (94 observations)
0.36m SCT at f/4, SBIG ST-8E at Bin 2, 240 s
Collaboration with another observatory
 

(1164) Kobolda B
4.141h + 0.002h
0.30m + 0.01m
[Data] U=3

Obs Start: 28 January 2007
Obs End: 30 January 2007
Sessions: 3 (97 observations)
0.36m SCT at f/5.6, SBIG ST-9E at Bin 1, 180 s
 

(1186) Turnera ^
12.136h + 0.016h
0.30m + 0.02m
[Data] U=3-

Obs Start: 19 April 2006
Obs End: 20 April 2006
Sessions: 2 (52 observations)
0.36m SCT at f/4, SBIG ST-8E at Bin 2, 180 s
Collaboration with another observatory
 

(1273) Helma
6.0851h + 0.0006h
0.32m + 0.01m
[Data] U=3

Obs Start: 26 July 2006
Obs End: 04 August 2006
Sessions: 3 (87 observations)
0.36m SCT at f/4, SBIG ST-8E at Bin 1, 240 s
 

(1293) Sonja ^
2.878h + 0.001h
0.21m + 0.01m
[Data] U=3

Obs Start: 24 June 2006
Obs End: 25 June 2006
Sessions: 2 (140 observations)
0.36m SCT at f/4, SBIG ST-8E at Bin 1, 120 s, 180 s.  Data also taken by Nelya at Simeiz Observatory, Ukraine
 

(1338) Duponta  B^
P1=3.85453h + 0.00009h
P2=17.57 + 0.01h
0.3m + 0.02m
[Data] U=3

* BINARY *

Obs Start: 23 March 2007
Obs End: 11 April 2007
Sessions: 3 (20+) (95 observations)
0.36m SCT at f/5.6, SBIG ST-9E, 240 s
Targets Binary nature discovered as part of the BINAST survey.  I joined in to help resolve P2.

CBET 910: (1338) DUPONTA
 

(1379) Lomonosowa
24.490 + 0.009h
~0.5m + 0.01m
[Data] U=2

Obs Start: 10 March 2008
Obs End: 28 March 2008
Sessions: 5 (109 observations)
0.36m SCT at f/4, SBIG ST-8E, 120 s
Data taken in support of Jim Brinsfield
 

(1385) Gelria CALL* 
4.61 + 0.02h
0.08m + 0.02m
[Data] U=2

Obs Start: 06 June 2008
Obs End: 06 June 2008
Sessions: 2 (101 observations)
0.36m SCT at f/4, SBIG ST-8E, 180 s
Crowded field.  Some apparent wayward data removed
 

(1418) Fayeta B
63.641 + 0.016h
0.24m + 0.01m
[Data] U=3

Obs Start: 23 August 2007
Obs End: 22 September 2007
Sessions: 8 (294 observations)
0.36m SCT at f/4, SBIG ST-8E, 120 s
Dropped the 12/09 session.  All other data fits the bimodal and monomodal period plots
 

(1554) Yugoslavia
3.8879 + 0.0003h
0.64m + 0.02m
[Data] U=3

Obs Start: 09 April 2007
Obs End: 15 April 2007
Sessions: 3 (80 observations)
0.36m SCT at f/4, SBIG ST-8E, 240 s
Target found in the same field at 1862 Apollo.
 

(1600) Vyssotsky
3.20126h + 0.00003h
0.25m + 0.02m
[Data] U=3

Obs Start: 05 May 2007
Obs End: 03 August 2007
Sessions: 12 (369 observations)
0.36m SCT at f/4, SBIG ST-8E, 240 s
This is a target requested by Brian Warner for Shape Modeling
 

(1620) Geographos 
5.2220h + 0.0003h
1.1m + 0.02m
[Data] U=3

Obs Start: 17 February 2008
Obs End: 24 February 2008
Sessions: 5 (136 observations)
0.36m SCT at f/4, SBIG ST-8E, 180 s
Fits found at 4.69hr and 5.22hrs.  One is an alias - just need more data.
 

(1634) Ndola  B
64.23h + 0.07h
0.4m + 0.02m
[Data] U=2+

Obs Start: 17 September 2006
Obs End: 03 October 2006
Sessions: 8 (193 observations)
0.36m SCT at f/4, SBIG ST-8E, 240 s
 

(1650) Heckmann  
14.893h + 0.005h
0.12m + 0.01m
[Data] U=3

Obs Start: 09 March 2008
Obs End: 15 March 2008
Sessions: 4 (230 observations)
0.36m SCT at f/4, SBIG ST-8E, 120 s
 

(1664) Felix *  
3.3454h + 0.0002h
0.4m + 0.02m
[Data] U=3

Obs Start: 17 March 2008
Obs End: 31 March 2008
Sessions: 5 (149 observations)
0.36m SCT at f/4, SBIG ST-8E, 120 s
 

(1685) Toro
10.1995h + 0.0004h
0.47m + 0.02m
[Data] U=3

 

 

(1685) Toro (2)
10.1862h + 0.0006h
0.60m + 0.02m
[Data] U=3

Obs Start: 23 May 2007
Obs End: 22 July 2007
Sessions: 13 (485 observations)
0.36m SCT at f/4, SBIG ST-8E, 240 s
Shape modeling target for David V and Mikko Kassaleinan.  Target has a known period of 10.196hrs.  Target is deep inside the Milky Way making data extraction difficult with 20-40 star subtractions per run using MPO_Canopus StarBGone.

Obs Start: 17 February 2008
Obs End: 01 March 2008
Sessions: 8 (240 observations)
0.36m SCT at f/4, SBIG ST-8E, 180/120 s
Toro is a shape modeling and YORP target for this apparition.  David V is the Professional after the data.
 

(1701) Okavango
13.204h + 0.004h
0.45m + 0.02m
[Data] U=3

Obs Start: 08 July 2004
Obs End: 22 July 2004
Sessions: 6 (810 observations)
0.36m SCT at f/2.95, SX MX716, 120 s
 

(1736) Floirac  B^
6.7739h + 0.0009h
0.07m + 0.005m
[Data] U=3

Obs Start: 04 October 2007
Obs End: 13 October 2007
Sessions: 3 (5) (340 observations)
0.36m SCT at f/4, SBIG ST-8E, 90 s
Additional data supplied by SPleso, Modra and Ondrejov observatories
 

(1775) Zimmerwald*
[Data]

Obs Start: 18 December 2004
Obs End: 18 December 2004
Sessions: 1 (200 observations)
0.36m SCT at f/2.95, SX MX716, 120 s
 

(1797) Schaumasse B
6.102h + 0.005h
0.62m + 0.01m
[Data] U=3

Obs Start: 12 March 2008
Obs End: 13 March 2008
Sessions: 2 (92 observations)
0.36m SCT at f/4, SBIG ST-8E, 180 s
 

(1829) Dawson  B
4.2463 h + 0.0009 h
0.2 m + 0.01m
[Data] U=3

Obs Start: 10 March 2007
Obs End: 14 March 2007
Sessions: 4 (126 Observations)
0.36m SCT at f/5.6, SBIG ST-9E, 240 s
Target had been covered by Don Pray in 2005 for the BINAST survey.  Petr put it up again for further observation as it is a prime binary target.  Don found a period of 4.25 hrs.
 

(1830) Pogson  B*
P1 = 2.56982 h + 0.00001 h
P_orb = 24.240 + 0.005 h
Ds/Dp > 0.32
0.11 m + 0.02m
[Data] U=3

* Binary *
 

Obs Start: 18 April 2007
Obs End: 19 July 2007
Sessions: 12 (10) (433 Observations)
0.36m SCT at f/4, SBIG ST-8E Bin 1, 240 s
Additional data has been acquired by Peter Kusnirak at Ondrejov Observatory, Julian Oey at Leura and Don Pray at Carbunkle Hill.

CBET 957: 20070511 (1830) Pogson
 

(1843) Jarmila *
8.3 h + 0.1 h
0.20 m + 0.02m
[Data] U=1

Obs Start: 29 May 2008
Obs End: 29 May 2008
Sessions: 1 (56 Observations)
0.36m SCT at f/4, SBIG ST-8E Bin 1, 240 s
Located in a dense starfield.  This one may be hard to resolve.
 

(1855) Korolev
4.7221 h + 0.0004 h
0.80 m + 0.02m
[Data] U=3

Obs Start: 29 February 2008
Obs End: 07 March 2008
Sessions: 2 (120 Observations)
0.36m SCT at f/4, SBIG ST-8E Bin 1, 120 s
Target started by Don Pray.
 

(1862) Apollo
3.06445 h + 0.00014 h
0.16 m + 0.02m
[Data] U=3

Obs Start: 09 April 2007
Obs End: 20 April 2007
Sessions: 9 (326 Observations)
0.36m SCT at f/4, SBIG ST-8E Bin 1, 240 s
Data required by David Vokrouhlicky and Mikko Kaasalainen for YORP and shape modelling
 

(1967) Menzel^  B
2.8346 h + 0.0003 h
0.25 m + 0.02m
[Data] U=3

Obs Start: 07 April 2007
Obs End: 14 April 2007
Sessions: 5 (118 Observations)
0.36m SCT at f/4, SBIG ST-8E Bin 1, 240 s
Additional data is being taken by Peter Kusnirak of Ondrejov Observatory
 

(2002) Euler^  B
5.92 h + 0.05 h
0.4 m + 0.03m
[Data] U=2

 

5.991 h + 0.008 h
0.18 m + 0.02m
[Data] U=3

Obs Start: 17 May 2006
Obs End: 17 May 2006
Sessions: 1 (41 Observations)
0.36m SCT at f/4, SBIG ST-8E Bin 1, 240 s
Data looking quite noisy (lowish SNR due to poor conditions) but main period appears well defined. 

Obs Start: 02 October 2007
Obs End: 03 October 2007
Sessions: 2 (95 Observations)
0.36m SCT at f/4, SBIG ST-8E Bin 1, 240 s
Target is a suspect binary so is covered again this apparition.
 

(2195) Tengstrom  B1
2.816 h + 0.003 h
0.2 m + 0.03m
[Data] U=3-

Obs Start: 15 April 2006
Obs End: 16 April 2006
Sessions: 2 (80 Observations)
0.36m SCT at f/5.6, SBIG ST-9E Bin 1, 240 s and 0.36m SCT at f/4, SBIG ST-8E Bin 1, 240 s
Data looking quite noisy (lowish SNR) but main period appears well defined.
 

(2195) Tengstrom  B2
2.82112 h + 0.00007 h
0.17 m + 0.02m
[Data] U=3

Obs Start: 03 August 2007
Obs End: 20 August 2007
Sessions: 5 (221 Observations)
0.36m SCT at f/5.6, SBIG ST-9E Bin 1, 240 s and 0.36m SCT at f/4, SBIG ST-8E Bin 1, 240 s

Second Opposition observation as the target is considered a potential binary

(2274) Ehrsson^ B
78 h + 1 h
0.49 m + 0.005m
[Data] U=2

bs Start: 05 March 2006
Obs End: 09 March 2006
Sessions: 4 (200 Observations)
0.36m SCT at f/4, SBIG ST-8E Bin 1, 180 s
PO is Bob Koff, Antelope Hills Observatory. 2 nights end to end revealed 13 hours of continuous increase in the lightcurve.  Terminated by Petr as of no interest to the Survey.  Plot calculated by Petr using data from Antelope Hills, Skalnate Pleso and Hunters Hill Observatories.
 

(2328) Robeson B^
18.632h + 0.004h
0.2 m + 0.04m
[Data] U=2+

Obs Start: 07 December 2006
Obs End: 11 January 2007
Sessions: 6(5) (245 Observations)
0.36m SCT at f/5.6, SBIG ST-9E Bin 1, 240s
Additional data obtained from Julian Oey of Leura Observatory
 

(2348) Michkovitch*
>28 h +  h
>0.12 m + 0.005m
[Data] U=1

Obs Start: 03 March 2006
Obs End: 18 March 2006
Sessions: 4 (189 Observations)
0.36m SCT at f/4, SBIG ST-8E/9E Bin 1, 180 s
 

(2351) O'Higgins
4.7889h + 0.0006h
0.5m + 0.02m
[Data] U=3

Obs Start: 16 October 2004
Obs End: 25 October 2004
Sessions: 4 (223 Observations)
0.36m SCT at f/2.95, SX MX716, 120/180 s
 

(2378) Pannekoek
5.943h + 0.003h
0.08m + 0.01m
[Data] U=2+

Obs Start: 01 January 2008
Obs End: 05 January 2008
Sessions: 3 (138 Observations)
0.36m SCT at f/4, SBIG ST-8E, 180 s
 

(2430) Bruce Helin ^B
126.85h + 0.03h
0.60m + 0.02m
[Data] U=3

Obs Start: 11 September 2006
Obs End: 03 October2006
Sessions: 10 (7)(397 Observations)
0.36m SCT at f/4, SBIG ST-8E, 240 s
Additional observations made by Adrian Galad and Leos Kornos of Modra Observatory.  Using several linked nights by Modra, we both show a best fit around 127hrs.
 

(2478) Tokai B ^
25.878 + 0.007h
0.8m + 0.02m
[Data] U=3

Synchronous Binary

Obs Start: 20 January 2007
Obs End: 16 February 2007
Sessions: 5(11) (199 data points)
0.36m SCT at f/5.7, SBIG ST-9E, 240/180 s
Considered to be a classic synchronous binary asteroid.  Additional data obtained by Peter Kusnirak at Ondrejov, Adrian Galad and his team at Modra, Brian Warner at Palmer Divide and Julian Oey at Leura Observatories.

CBET 824: 20070130 (2478) Tokai
 

(2501) Lohja B
3.8083 + 0.0001h
0.38m + 0.01m
[Data] U=3

Potential Binary or
Tumbler

Obs Start: 21 March 2006
Obs End: 08 April 2006
Sessions: 7 (251 data points)
0.36m SCT at f/5.7, SBIG ST-9E, 180 s
Primary Observer Hunters HillPetr has analyses the data and found a possible second period of only 0.04mag amplitude.
 

(2510) Shandong B
5.9463 + 0.0003h
0.44m + 0.01m
[Data] U=3

Obs Start: 28 August 2006
Obs End: 04 September 2006
Sessions: 4 (168 data points)
0.36m SCT at f/4, SBIG ST-8E, 180 s
 

(2606) Odessa CALL
8.2426 + 0.0003h
0.90m + 0.02m
[Data] U=3

Obs Start: 15 January 2008
Obs End: 12 February 2008
Sessions: 3 (67 data points)
0.36m SCT at f/4, SBIG ST-8E, 180 s
 

(2709) Sagan B*
5.258 + 0.002h
0.36m + 0.01m
[Data] U=2

Obs Start: 01 March 2008
Obs End: 03 March 2008
Sessions: 2 (94 data points)
0.36m SCT at f/4, SBIG ST-8E, 180 s
 

(2754) Efimov B
P1 = 2.4497 + 0.0002h
P2 = 14.765 + 0.01 h
0.15m + 0.02m
[Data] U=3

* B I N A R Y *
 

Obs Start: 04 September 2006
Obs End: 04 September 2006
Sessions: 1 (168 data points)
0.36m SCT at f/4, SBIG ST-8E, 240 s
Discovered by Don Pray with observations by Gianluca Masi, Skalnate Pleso, Richard Stephens, Ron Durkee and Rui Gonclaves.  I started observing AFTER the CBET.

CBET 617: 20060904 (2754) Efimov
 

(2896) Preiss B *^
>20hrs + 0.0h
>0.2m + 0.02m
[Data] U=1

 

Obs Start: 17 October 2007
Obs End: 18 October 2007
Sessions: 2 (71 data points)
0.36m SCT at f/4, SBIG ST-8E, 240 s
Don at Carbunkle Hill Observatory has taken the bulk of the data but needed support due to the near 24hr period.
 

(2991) Bilbo B
4.0637 + 0.0011h
0.4m + 0.02m
[Data] U=3

 

Obs Start: 15 April 2007
Obs End: 17 April 2007
Sessions: 3 (85 data points)
0.36m SCT at f/4, SBIG ST-8E, 240 s
Target has a very symmetrical curve so a Mono modal fit at 2.032hrs cannot be ruled out as yet
 

(3121) Tamines B
4.043 + 0.001h
0.16m + 0.01m
[Data] U=3

Obs Start: 29 April 2008
Obs End: 08 May 2008
Sessions: 4 (151 data points)
0.36m SCT at f/5, SBIG ST-8E, 240 s
 

(3163) Randi B
59.50 + 0.02h
1.20m + 0.01m
[Data] U=3

Obs Start: 10 July 2007
Obs End: 25 July 2007
Sessions: 8 (132 data points)
0.36m SCT at f/5, SBIG ST-8E, 240 s
 

(3356) Resnik B *
>32 + 0.0h
>0.10m + 0.01m
[Data] U=1

Obs Start: 05 May 2007
Obs End: 16 May 2007
Sessions: 2 (64 data points)
0.36m SCT at f/4, SBIG ST-8E, 240 s
 

(3364) Zdenka B
7.584 + 0.002h
0.43m + 0.01m
[Data] U=3

Obs Start: 10 May 2007
Obs End: 12 May 2007
Sessions: 3 (169 data points)
0.36m SCT at f/4, SBIG ST-8E, 240 s
 

(3415) Danby (RB) ^
5.672 + 0.002h
0.14m + 0.02m
[Data] U=3

Obs Start: 11 November 2007
Obs End: 13 November 2007
Sessions: 3 (3) (144 data points)
0.36m SCT at f/4, SBIG ST-8E, 180 s
Brian Warner also taking data for this target.  Petr and Alan agree with our assessment.
 

(3544) Borodino B *
5.442 + 0.002h
0.6m + 0.01m
[Data] U=3

Obs Start: 02 October 2007
Obs End: 03 October 2007
Sessions: 2 (106 data points)
0.36m SCT at f/4, SBIG ST-8E, 240 s
 

(3590) Holst B
12.7613 + 0.001h
0.16m + 0.02m
[Data] U=2+

 

Obs Start: 25 October 2006
Obs End: 27 November 2006
Sessions: 7 (1) (290 data points)
0.36m SCT at f/4, SBIG ST-8E, 240 s
Additional data is being obtained by Skalnate Pleso.
 

(3665) Fitzgerald*^ B
P1 = 2.41 + 0.1h
P2 = 18.33 + 0.1 h
0.16m + 0.04m
[Data] U=2

* Possible Binary *

Obs Start: 29 May 2006
Obs End: 05 June 2006
Sessions: 4 (138 data points)
0.36m SCT at f/4, SBIG ST-8E, 240 s
Target getting too faint for Hunters Hill so new survey member Julian Oey from Leura has taken over.  Preliminary analysis of all data by Dr Pravec indicates a possible binary based on 2 additive components with no mutual events.
 

(3700) Geowilliams B
14.387 + 0.003hrs
0.40 + 0.02m
[Data] U=3

Obs Start: 10 January 2008
Obs End: 16 February 2008
Sessions: 6 (197 data points)
0.36m SCT at f/4, SBIG ST-8E, 180 s
Significant change in the targets orientation accounts for the change in the targets amplitude.  January Data left out of the solution but is consistent with the derived period.
 

(3851) Alhambra B*
53.0 + 0.1hrs
0.30 + 0.03m
[Data] U=2+

Obs Start: 10 March 2007
Obs End: 08 April 2007
Sessions: 7 (170 data points)
0.36m SCT at f/5.6, SBIG ST-9E, 240 s
This one is difficult.  Poor fits from 26 to 53 hrs and beyond.  Given rough fits at 26 and 53 hours, 53 may be the probable period.
 

(3868) Mendoza B
2.7716 + 0.0007hrs
0.10 + 0.03m
[Data] U=3

* Possible Binary *

Obs Start: 29 June 2006
Obs End: 04 August 2006
Sessions: 8(4) (233(115) data points)
0.36m SCT at f/4, SBIG ST-8E, 240 s
This target has also been covered (3 nights) by Gabo, Michal and Marek of SkalnatePleso observatory and Julian from Leura Observatory which reveals a very noisy low amplitude curve.
 

(3875) Staehle* B
>16hrs
>0.8m
[Data]

Obs Start: 02 September 2005
Obs End: 21 September 2005
Sessions: 3 (148 data points)
0.36m SCT at f/4, SBIG ST-8E, 180 s
 

(3896) Pordenone
4.009 + 0.004 hr
0.28m + 0.03m
[Data] U=3

Obs Start: 13 October 2007
Obs End: 16 October 2007
Sessions: 3 (35 Observations)
0.36m SCT at f/4, SBIG ST-8e, 240 s
Picked up in the field of BINAST Target 32039
 

(3913) Chemin B
3.4077 + 0.0004 h
0.17m + 0.03m
[Data] U=3

Obs Start: 26 August 2006
Obs End: 12 September 2006
Sessions: 6 (168 data points)
0.36m SCT at f/4, SBIG ST-8E, 240 s
 

(3918) Brel^ B
3.0966 + 0.0002 h
0.22m + 0.02m
[Data] U=3

Obs Start: 11 November 2005
Obs End: 19 November 2005
Sessions: 1 (3) (34 data points)
0.36m SCT at f/4, SBIG ST-8E, 240 s

PI/PO is Ron Dyvig and Vishnu Kanupuru of Badlands Observatory, South Dakota, USA.
 

(4029) Bridges  B
3.5745 + 0.0002 h
0.2m + 0.01m
[Data] U=3

* B I N A R Y *
 

Obs Start: 11 April 2006
Obs End: 04 May 2006
Sessions: 8(3) (417 data points)
0.36m SCT at f/5.6, SBIG ST-9E, 240 s and f/4, SBIG ST-8E Bin 2 and 1, 240 s.  Multiple fits found around 3.62hrs.
Additional data supplied by
Walt Cooney of SRO

CBET 507: 20060508 (4029) Bridges
 

(4222) Nancita^ B
3.8732 + 0.0003 h
0.97m + 0.02m
[Data] U=3

Obs Start: 20 January 2006
Obs End: 21 January 2006
Sessions: 2 (2) (293 data points)
0.36m SCT at f/4, SBIG ST-8E, 120 s
Additional data supplied by Ron and Vishnu of Badlands Observatory, South Dakota, USA
 

(4263) Abashiri^ B
4.8821 + 0.0002 h
0.14m + 0.01m
[Data] U=3

Obs Start: 06 March 2008
Obs End: 06 March 2008
Sessions: 1 (7) (99 data points)
0.36m SCT at f/4, SBIG ST-8E, 240 s
Observed in support of Don Pray and BINAST
 

(4299) WIYN^ B
>26.0 + 0.0 h
0.06m + 0.01m
[Data] U=1

Obs Start: 22 October 2006
Obs End: 23 October 2006
Sessions: 2 (87 data points)
0.36m SCT at f/4, SBIG ST-8E, 240 s

 

(4232) Aparicio^ B
[Data]
PI/PO is Brian Warner of Palmer Divide Observatory.  It appears to be a long period object (in the order of 56hours)
 

(4335) Verona ^
3.5943 + 0.0001 h
0.3m + 0.01m
[Data] U=3

Obs Start: 18 October 2006
Obs End: 18 October 2006
Sessions: 1 (2) (24 data points)
0.36m SCT at f/5.6, SBIG ST-9E, 180 s
This target was also covered by Peter Kusnirak, Ondrejov Observatory on 2 sessions pre 30 September 2006.
 

(4555) 1987 QL B ^
2.8844 + 0.0002 h
0.22m + 0.02m
[Data] U=3

* Possible Binary *

Obs Start: 16 May 2007
Obs End: 23 May 2007
Sessions: 2 (6) (65 data points)
0.36m SCT at f/4, SBIG ST-8E, 240 s
This target has also been observed by Peter and Kamil at Ondrejov observatory and Don Pray at Carbuncle Observatory.
 

(4580) Child
4.1810 + 0.0004 h
0.50m + 0.03m
[Data] U=3

Obs Start: 17 March 2006
Obs End: 26 March 2006
Sessions: 6 (154 data points)
0.36m SCT at f/5.6, SBIG ST-9E, 180 s
Picked this CALL target as it had a short period and U=2 at P=4.181hrs
 

(4635) Rimbaud
119.02hrs + 0.05 h
0.70m + 0.02m
[Data] U=2+

Obs Start: 10 April 2008
Obs End: 24 May 2008
Sessions: 14 (259 data points)
0.36m SCT at f/4, SBIG ST-8E, 240 s
The targets period appears to be ver close to a multiple of 12hrs meaning that all my observations are hitting the same 6 points on the curve.  Furhter observations will not close any of the gaps.
 

(4703) Kagoshima B^
4.093 + 0.001 h
0.05m + 0.01m
[Data] U=2

Obs Start: 12 December 2007
Obs End: 17 December 2007
Sessions: 3 (141 data points)
0.36m SCT at f/4, SBIG ST-8E, 240 s
Took this target on to assist Don in trying to nail down a period for a very low amplitude target.  However the weather didn't co-operate so I couldn't get down to the 0.005mag RMS needed (0.009 was the best I could do)  We did achieve a U=2 result however.
 

(4949) 1988 WE B
2.6798 + 0.00023 h
0.1m + 0.01m
[Data] U=3

Obs Start: 02 October 2005
Obs End: 10 October 2005
Sessions: 4 (247 data points)
0.36m SCT at f/4, SBIG ST-8E, 180 s
 

(5129) Groom B
3.6395h + 0.0003 h
0.18m + 0.02m
[Data] U=3

Obs Start: 28 January 2007
Obs End: 16 February 2007
Sessions: 5 (175 data points)
0.36m SCT at f/5.6, SBIG ST-9E Bin 1, 180 s
Additional data obtained by Julian Oey at Leura (not included in this analysis)
 

(5331) Erimomisaki ^
24.33h + 0.03
>0.22m + 0.02m
[Data] U=2

Obs Start: 09 January 2008
Obs End: 10 January 2008
Sessions: 2 (63 data points)
0.36m SCT at f/4, SBIG ST-8E Bin 1, 180 s
PO Russ Durkee, Shed of Science Observatory.  Observations taken to support Russ as target appears to have a period near 24hrs.

(5333) Kanaya B
3.8022h + 0.0008 h
0.22m + 0.02m
[Data] U=3

Obs Start: 22 December 2005
Obs End: 30 December 2005
Sessions: 6 (177 data points)
0.36m SCT at f/4, SBIG ST-8E Bin 2, 240/300 s
 

(5386) 1995 TH6^ B
16.841h + 0.002 h
0.3m + 0.02m
[Data] U=3

Obs Start: 31 July 2005
Obs End: 124 August 2005
Sessions: 7 (596 data points)
0.36m SCT at f/4, SBIG ST-8E Bin 2, 180 s
Additional observations obtained from 540 Gianluca Masi, Bellatrix Observatory, observing from Chile
 

(5404) Uemura^ B*
1.727h + 0.003 h
0.12m + 0.02m
[Data] U=3

Obs Start: 09 April 2008
Obs End: 10 April 2008
Sessions: 2 (65 data points)
0.36m SCT at f/4, SBIG ST-8E Bin 1, 240 s
Observations taken in support of BINAST
 

(5474) Gingasen  B
3.6231h + 0.0007 h
0.16m + 0.03m
[Data] U=3

* Possible Binary *
 

Obs Start: 07 March 2008
Obs End: 14 March 2008
Sessions: 5 (220 data points)
0.36m SCT at f/4, SBIG ST-8E Bin 1, 180 s/240 s

 

(5477) 1989 UH2^ B
Pprim= 2.9945 + 0.0004 h
Porb= 24.42 + 0.02 h
Aprim= 0.11 mag
[Data] U=3

* B I N A R Y *

Obs Start: 26 May 2007
Obs End: 26 May 2007
Sessions: 1 (3) (39 data points)
0.36m SCT at f/4, SBIG ST-8E Bin 2, 180 s
PI/PO is Brian Warner of Palmer Divide Observatory.  This is a Binary Asteroid.  Object covered by multiple observers as part of the BinAstPhotSurvey
Second Apparition commenced 26 May 2007

(5783) Kumagaya B
3.659 + 0.002hrs
0.18 + 0.03mag
[Data] U=3

Obs Start: 01 March 2008
Obs End: 03 March 2008
Sessions: 2 (1) (101 data points)
0.36m SCT at f/4, SBIG ST-8E Bin 1, 240 s
Additional data supplied by Kamil at Ondrejov Observatory
 

(6084) Bascom^ B
Pprim= 2.7454 + 0.0001 h
Porb= 43.45 + 0.01 h
Aprim= 0.22 mag
Ds/Dp= 0.37 + 0.03
H_R= 12.8 + 0.1
[Data] U=3

* B I N A R Y *

Obs Start: 29 December 2005
Obs End: 09 February 2006
Sessions: 12 (8) (500 data points)
0.36m SCT at f/4, SBIG ST-8E, 180/240 s
PO David Higgins, PI Dr Petr Pravec, Astronomical Institute, Czech Republic.  Collaboration with Ondrejov and Modra Observatories

CBET 389: 20060206 (6084) BASCOM
 

(6153) Hershey *
6.094h + 0.003h
0.14m + 0.03m
[Data] U=1

Obs Start: 13 December 2005
Obs End: 02 January 2006
Sessions: 5 (197 data points)
0.36m SCT at f/4, SBIG ST-8E, 240/300 s
 

(6193) Manabe
3.2460h + 0.0009h
0.17m + 0.02m
[Data] U=3

Obs Start: 29 April 2008
Obs End: 04 May 2008
Sessions: 3 (98 data points)
0.36m SCT at f/4, SBIG ST-8E, 240 s
 

(6244) Okamoto ^ B
Pprim= 2.8958 + 0.0001 h
Porb= 20.32 + 0.01 h
Aprim= 0.11 + 0.01mag
DoE = 0.07 to 0.15mag
Ds/Dp= 0.25 + 0.02
H_R=
[Data] U=3

* B I N A R Y *

Obs Start: 26 September 2006
Obs End: 18 October 2006
Sessions: 7 (9) (247 data points)
0.36m SCT at f/4, SBIG ST-8E, 240 s
Data collected by Don from Carbuncle Hill Observatory and Peter Kusnirak from Ondrejov Observatory.  Analysis performed by Peter Kusnirak.

CBET 681: 20061019 (6244) Okamoto