oj287

Basic data :
QSO J0854+2006 -- BL Lac 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: Rad (2010AJ,B2,...), gam (3EG,EGR,...), BLL (2010ApJ,[VV2000b],...), Bla (2012ApJ,[DGT2001],...), QSO (2009ApJS,QSO,...), X (2009A&A,2E,...), G (2021AJ,2MASX), * (Cl*,EPIC,...), AGN (2011ApJ,CGRaBS), MIR (WISEA,WISE), IR (IRAS,PSCz), Opt (LAMOST,SDSS), rG (2022A&A), LP* (2008AJ), Bz? (2013ApJS), V* (AAVSO), UV (PG), 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" B : 0.01-0.1" + 2MASS, Tyc A : VLBI, Hipparcos bibcode : bibcode of the coordinates reference ICRS coord. (ep=J2000) : 08 54 48.8749846272 +20 06 30.639583620 (Optical) [ 0.0211 0.0101 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" B : 0.01-0.1" + 2MASS, Tyc A : VLBI, Hipparcos bibcode : bibcode of the coordinates reference FK4 coord. (ep=B1950 eq=1950) : 08 51 57.2546617744 +20 17 58.482758486 [ 0.0211 0.0101 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) : 206.8121278490227 +35.8208943533540 [ 0.0211 0.0101 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 : -0.053 0.069 [0.026 0.017 90] A 2020yCat.1350....0G 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) 78187 [~] / z(emission) 0.306 [~] / cz 91736 [~]    (Opt) D 2016ApJ...818..113N 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): 0.0111 [0.0223] A 2020yCat.1350....0G 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 (12) : B 15.91 [~] D 2010A&A...518A..10V V 15.43 [~] D 2010A&A...518A..10V R 15.56 [~] D 2008ApJS..175...97H G 14.546203 [0.022583] C 2020yCat.1350....0G J 13.503 [0.039] C 2006AJ....131.1163S H 12.567 [0.039] C 2006AJ....131.1163S K 11.768 [0.032] C 2006AJ....131.1163S u (AB) 16.569 [0.007] B 2009ApJS..182..543A g (AB) 15.936 [0.004] B 2009ApJS..182..543A r (AB) 15.423 [0.004] B 2009ApJS..182..543A i (AB) 15.043 [0.004] B 2009ApJS..182..543A z (AB) 14.718 [0.005] B 2009ApJS..182..543A	SIMBAD within arcmin ', {sourceSize:12, color:'#30a090'})); aladin.on('objectClicked', function(object) { var objName=object.data.MAIN_ID; aladin.showPopup(object.ra,object.dec,'',''+ objName+''); });" title="Show Simbad objects"> Overlay points in this preview 2MASS DSS SDSSXMMIRACIRISGALEX 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: See also Specfind radio flux densities.

QSO J0854+2006	INTREF 371	PSCz Q08519+2017	WMAP J0854+2005
B2 0852+20	IRAS F08519+2017	QSO B0851+2017	WMAP J0854+2006
BWE 0851+2017	IRAS 08519+2017	QSO B0851+202	WMAP J0855+2007
CGRaBS J0854+2006	JVAS J0854+2006	RFC J0854+2006	2XMM J085448.8+200630
Cl* NGC 2632 KP 114757	JVAS B0851+202	RGB J0854+201	9Y-MST J0854+2006
CLASS J085448.8740+200630.638	1Jy 0851+202	RGB J0854.8+2006	[BDW2002] q0851+2017
CRATES J085448+200647	1Jy 0851+20	RORF 0851+202	[CAB95] IRAS F08519+2017
2E 2076	LAMOST J085448.87+200630.7	RX J085451+20068	[DGT2001] B0851+202
2E 0851.9+2018	LINEAR 5270824	RX J0854.8+2006	[GGR94] 0851+202
3EG J0853+1941	MASIV J0854+2006	1RXS J085451.5+200646	[GW2008] CoNFIG 35
EGR J0853+2015	2MASS J08544888+2006306	S3 0851+20	[HB93] 0851+202
EPIC 211991001	2MASX J08544889+2006307	SDSS J085448.87+200630.7	[IN88] 0851+202
1ES 0851+20.3	MITG J0854+2006	SDSS J085448.87+200630.6	[MGL2009] BZB J0854+2006
0FGL J0855.4+2009	MITG J085448+2006	TeV J0854+201	[MML2015] 5BZB J0854+2006
1FGL J0854.8+2006	NEWPS5 J0854+2006	TGSSADR J085448.8+200630	[P82] 0851+202
2FGL J0854.8+2005	NRAO 0852+20	TIC 197241758	[VV2000b] J085448.8+200630
3FGL J0854.8+2006	NRAO 0851+20	TXS 0851+202	[VV2003b] J085448.8+200630
4FGL J0854.8+2006	NVSS J085448+200630	UT 0851+203	[VV2006b] J085448.8+200630
1FHL J0854.8+2004	OHIO J 287	VLSSr J085449.0+200630	[VV2010b] J085448.8+200630
3FHL J0854.8+2006	PCCS1 030 G206.82+35.81	VLSS J0854.8+2006	[VV98b] J085448.8+200630
FIRST J085448.8+200630	PCCS2 143 G206.80+35.81	VRO 20.08.01	[WCO2009] J085458+200606
1FLE J0855+2014	PG 0851+202	VSOP J0854+2006	[ZEH2003] RX J0854.8+2006 1
GB6 J0854+2006	PG 0851+203	WB 0851+2017	AAVSO 0849+20
GB6 B0851+2018	PKS J0854+2006	WISEA J085448.87+200630.6	Gaia DR3 660820614442429056
87GB 085157.5+201747	PKS 0851+202	WISE J085448.87+200630.7	Gaia DR1 660820610145858048
ICRF J085448.8+200630	PKS 0851+203	WISE J085448.87+200630.6	Gaia DR2 660820614442429056
IERS B0851+202	PLCKERC -857 G206.80+35.82	WMAP 115

References (2292 between 1850 and 2024) (Total 2292) 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 : oj287

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