NGC 1142

Basic data :
NGC 1142 -- Seyfert 2 Galaxy Origin of the objects types : (Ref) Object type as listed in the reference "Ref" (acronym) Object type linked to the acronym according to the original reference () Anterior to 2007, before we can link the objet type to a reference, or given by the CDS team in some particular cases Other object types: G (2017ApJ,6dFGS,...), AGN ([HB91],[VV2000c],...), X (PBC,1RXP,...), IR (IRAS,PSCz,...), smm (JCMTSE,JCMTSF), Sy2 (2013ApJS), rG (2018AJ), GiP (KPG), IG (VV), * (Gaia), MIR (WISE), Opt (SDSS) Syntax of coordinates is : "ra dec (wtype) [error ellipse] quality bibcode" : ra dec : right ascension and declination (unit and frame defined according to your Output Options) Grey values are increasing the original precision due to the computation of frame transformations (wtype) : wavelength class for the origin of the coordinates (Rad, mm, IR, Optical, UV, Xray, Gam) [error ellipse] : measurement uncertainty, on (ra,dec) if the positional angle is 90 degrees, on (majaxis,minaxis) otherwise (in mas at defined epoch in the original catalogue), position angle (in degrees North celestial pole to East) quality : flag of quality E ≥ 10" D : 1-10" (and some old data) C : 0.1-1" B : 0.01-0.1" + 2MASS, Tyc A : VLBI, Hipparcos bibcode : bibcode of the coordinates reference ICRS coord. (ep=J2000) : 02 55 12.2311509144 -00 11 00.807149472 (Optical) [ 3.1707 2.9029 90 ] C 2020yCat.1350....0G Syntax of coordinates is : "ra dec (wtype) [error ellipse] quality bibcode" : ra dec : right ascension and declination (unit and frame defined according to your Output Options) Grey values are increasing the original precision due to the computation of frame transformations (wtype) : wavelength class for the origin of the coordinates (Rad, mm, IR, Optical, UV, Xray, Gam) [error ellipse] : measurement uncertainty, on (ra,dec) if the positional angle is 90 degrees, on (majaxis,minaxis) otherwise (in mas at defined epoch in the original catalogue), position angle (in degrees North celestial pole to East) quality : flag of quality E ≥ 10" D : 1-10" (and some old data) C : 0.1-1" B : 0.01-0.1" + 2MASS, Tyc A : VLBI, Hipparcos bibcode : bibcode of the coordinates reference FK4 coord. (ep=B1950 eq=1950) : 02 52 38.7125770996 -00 23 08.086901826 [ 3.1707 2.9029 90 ] Syntax of coordinates is : "ra dec (wtype) [error ellipse] quality bibcode" : ra dec : right ascension and declination (unit and frame defined according to your Output Options) Grey values are increasing the original precision due to the computation of frame transformations (wtype) : wavelength class for the origin of the coordinates (Rad, mm, IR, Optical, UV, Xray, Gam) [error ellipse] : measurement uncertainty, on (ra,dec) if the positional angle is 90 degrees, on (majaxis,minaxis) otherwise (in mas at defined epoch in the original catalogue), position angle (in degrees North celestial pole to East) quality : flag of quality E ≥ 10" D : 1-10" (and some old data) C : 0.1-1" B : 0.01-0.1" + 2MASS, Tyc A : VLBI, Hipparcos bibcode : bibcode of the coordinates reference Gal coord. (ep=J2000) : 175.8755583790656 -49.8886074726240 [ 3.1707 2.9029 90 ] Syntax of radial velocity (or/and redshift) is : "value [error] (wavelength) quality bibcode" value : radial velocity or/and redshift (Heliocentric frame) according to your Output Options (redshift may be not displayed if the data value is <0 and the database inside value is a radial velocity) [error] : error of the corresponding value displayed before (wavelength) : wavelength range of the measurement : Rad, mm, IR, Opt, UV, Xray, Gam or  '∼'(unknown) quality : flag of quality ( A=best quality -> E=worst quality, ∼=unknown quality) bibcode : bibcode of the value's origin Radial velocity / Redshift / cz : V(km/s) 8480 [150] / z(emission) 0.02869937 [0.0005] / cz 8603.8547 [150]    (Opt) C 2022ApJS..261....2K Syntax of morphological type is : mtype quality bibcode mtype : Hubble morphological class (spirals, ellipticals, etc) quality : flag of quality (A=best quality -> E=worst quality, {� } =unknown quality) bibcode : bibcode of the morphological type reference Morphological type: E D ~ Syntax of angular size is : "maj-axis min-axis angle (wtype) quality bibcode" maj-axis : major axis size (arc minutes) min-axis : minor axis size (arc minutes) angle : orientation angle (in degrees) (wtype) : wavelength class for the origin of the angular size (Rad, mm, IR, Opt, UV, Xray, Gam) quality : flag of quality of the angular size values ( A=best quality -> E=worst quality, {� } =unknown quality) bibcode : bibcode of the angular size reference Angular size (arcmin): 1.35 0.83 118 (Opt) D 2003A&A...412...45P Syntax of fluxes (or magnitudes) is : "filter-name (System) flux-value [error] quality MultVarFlags bibcode" filter-name : U, B, V, R, I, G, J, H, K, u, g, r, i, z (System) : may be AB (default is Vega) flux-value : value of flux or magnitude [error] : error value quality : flag of quality of the flux value ( A=best quality -> E=worst quality, {� } =unknown quality) MultVarFlags : Mult is zero or one char (J) for joined photometry ; Var can be zero or two chars (V[0-4]) bibcode : bibcode of the flux reference Fluxes (11) : B 15.42 [~] D 2010A&A...518A..10V V 14.41 [~] D 2010A&A...518A..10V G 19.500751 [0.022264] C 2020yCat.1350....0G J 10.065 [0.023] C 2006AJ....131.1163S H 9.270 [0.025] C 2006AJ....131.1163S K 9.016 [0.030] C 2006AJ....131.1163S u (AB) 16.234 [0.011] C 2015ApJS..219...12A g (AB) 14.162 [0.002] B 2015ApJS..219...12A r (AB) 13.150 [0.002] B 2015ApJS..219...12A i (AB) 12.628 [0.002] B 2015ApJS..219...12A z (AB) 12.176 [0.002] B 2015ApJS..219...12A	SIMBAD within arcmin Overlay points in this preview 2MASS DSS SDSSXMMAllWISEIRACIRISGALEX All (CDSPortal) Send to within arcsec The VizieR photometry tool allows for easy visualization of photometry points extracted around the Simbad position from photometry-enabled catalogues in VizieR. The search radius has to be specified by the user. It is currently limited to a maximum of 30 arcsec. It depends mostly on the precision or quality of the coordinates (SIMBAD and VizieR catalogs), the resolution of the images from which the sources were extracted, source extent, and source crowding. Suggestions are: crowded field: 0.5 to 1.5 arcsec, 3 arcsec otherwise; uncertain coordinates (SIMBAD quality E or coordinates without reference): 5 to 30 arsec (risky!).
Some important notes on this object about identifications and objects associations. notes: NGC 1143 is a possible companion

NGC 1142	2MFGC 2355	SWIFT J0255.0-0009	[KRL2007b] 29
6dFGS gJ025512.2-001101	Mrk 1504	SWIFT J0255.4-0010	[PVK2003] 043.80042 -00.18333
IRAS 02526-0023	NGC 1144	UGC 2389	[VV2000c] J025512.2-001101
JCMTSE J025512.1-001109	PBC J0255.2-0011	UZC J025512.0-001059	[VV2003c] J025512.2-001101
JCMTSF J025512.1-001109	PSCz Q02526-0023	VV 331a	[VV2006c] J025512.2-001101
KPG 83b	1RXP J025511.9-001042	WISE J025512.18-001101.4	[VV2010c] J025512.2-001101
LEDA 11012	SDSS J025512.22-001100.8	2XMM J025512.1-001100	[VV98c] J025512.2-001101
2MASX J02551226-0011018	SDSS J025512.22-001100.7	[DML87] 595	Gaia DR3 2497931714971069056
MCG+00-08-048	SWIFT J0255.2-0011	[HB91] 0252-003

References (335 between 1850 and 2025) (Total 335) Simbad bibliographic survey began in 1850 for stars (at least bright stars) and in 1983 for all other objects (outside the solar system). Follow new references on this object

Collections of Measurements

External archives :

Archive data at HEASARC - High-Energy Astrophysics Science Archive Research Center

Data at NED - NASA/IPAC Extragalactic Database : NGC 1142

Link by name to the catalogue in VizieR :

Search by coordinates in Vizier (radius: 30 arcsec)

Annotations :
Annotations allow a user to add a note or report an error concerning the astronomical object and its data. It requires registration to post a note. See description .
Please, have a look at Best practices. The list of all annotations to SIMBAD objects can be found here .

Currently no annotations available

add an annotation to this object

report an error concerning the data of this object

Store this result in Votable, in Ascii, or in the CDS portal

To bookmark this query, right click on this link: simbad:NGC 1142 and select 'bookmark this link' or equivalent in the popup menu