TYC 3162-665-1

Basic data :
GSC 03162-00665 -- Eruptive Variable 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: * (TYC,GSC,...), MIR (WISEA,WISE), Er* (2019ApJS), V* (2019MNRAS), NIR (2MASS) 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''; as well as Tycho2, UCAC4, and Gaia DR2/3 without proper motions B : 0.01-0.1''; as well as Tycho2 and UCAC4 with proper motions A : Hipparcos and Gaia DR2/3 with proper motions; sometimes VLBI bibcode : bibcode of the coordinates reference ICRS coord. (ep=J2000) : 20 06 15.4526521026 +44 27 24.790869158 (Optical) [ 0.0088 0.0085 90 ] A 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''; as well as Tycho2, UCAC4, and Gaia DR2/3 without proper motions B : 0.01-0.1''; as well as Tycho2 and UCAC4 with proper motions A : Hipparcos and Gaia DR2/3 with proper motions; sometimes VLBI bibcode : bibcode of the coordinates reference FK4 coord. (ep=B1950 eq=1950) : 20 04 37.5557608544 +44 18 43.785845262 [ 0.0088 0.0085 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''; as well as Tycho2, UCAC4, and Gaia DR2/3 without proper motions B : 0.01-0.1''; as well as Tycho2 and UCAC4 with proper motions A : Hipparcos and Gaia DR2/3 with proper motions; sometimes VLBI bibcode : bibcode of the coordinates reference Gal coord. (ep=J2000) : 080.0379408041766 +06.6403305843674 [ 0.0088 0.0085 90 ] Syntax of proper motions is : "pm-ra pm-dec [error ellipse] quality bibcode" pm-ra : mu-ra*cos(dec) (expressed in the ICRS system in mas/yr) pm-dec : mu-dec (expressed in the ICRS system in mas/yr) [error ellipse] : error major axis and minor axis (in mas), orientation angle (in deg) quality : flag of quality (A=best quality →E=worst quality, ∼ =unknown quality) bibcode : bibcode of the proper motion reference Proper motions mas/yr : -10.375 -10.273 [0.012 0.011 90] A 2020yCat.1350....0G Syntax of parallax is : 'value quality [error] bibcode' value : parallax value quality : flag of quality (A=best quality →E=worst quality, ∼ =unknown quality) [error] : mean error bibcode : bibcode of the parallax reference Parallaxes (mas): 2.2545 [0.0099] A 2020yCat.1350....0G Spectral type is made of 3 parts: %coding is composed of 4 parts : the spectral type, which is made of a temperature class, eventually a luminosity class (roman number) and/or spectral peculiarities; a quality letter: A=best quality →E=worst quality, ∼ =unknown quality bibcode : bibcode of the spectral type reference Spectral type: F3V C 2016MNRAS.457.3988B 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 (7) : B 12.82 [0.32] D 2000A&A...355L..27H V 12.01 [0.20] D 2000A&A...355L..27H R 11.75 [0.04] D 2012yCat.1322....0Z G 11.758744 [0.002766] C 2020yCat.1350....0G J 10.763 [0.021] C 2003yCat.2246....0C H 10.551 [0.019] C 2003yCat.2246....0C K 10.499 [0.02] C 2003yCat.2246....0C	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!).

TYC 3162-665-1	NAME Boyajian's Star	WISEA J200615.45+442724.6	Gaia DR2 2081900940499099136
GSC 03162-00665	NSVS 5711291	WISE J200615.45+442724.7
KIC 8462852	TIC 185336364	Gaia DR3 2081900940499099136
2MASS J20061546+4427248	UCAC4 673-083862	Gaia DR1 2081900940499099136

References (146 between 1850 and 2025) (Total 146) 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

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