3C 273

Basic data :
3C 273 -- BL Lac - type object 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 (3C,4C,...), X (2012ApJS,2A,...), gam (1AGL,2AGL,...), QSO (2015Ap&SS,QSO,...), * (EPIC,GSC,...), Bla (2013ApJS,[DGT2001],...), IR (AKARI,IRAS,...), G (2012A&A,LEDA,...), UV (Balloon,2EUVE,...), AGN (2011ApJ,CGRaBS), BLL (2014ApJS), V* (AAVSO), Sy1 (2012MNRAS), MIR (CWISE), NIR (CWISEP) 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) : 12 29 06.6998257176 +02 03 08.597629980 (Optical) [ 0.0181 0.0129 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) : 12 26 33.2522453999 +02 19 43.422943015 [ 0.0181 0.0129 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) : 289.9508960628473 +64.3599749046156 [ 0.0181 0.0129 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 : -0.023 0.098 [0.027 0.018 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) 43751 [20] / z(~) 0.158339 [0.000067] / cz 47468.84 [20.09]    C 1992ApJS...83...29S 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): 0.0108 [0.0408] A 2018yCat.1345....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 13.05 [~] D 2010A&A...518A..10V V 14.830 [0.022] D 2000A&A...355L..27H R 14.11 [~] D 2008ApJS..175...97H G 12.844090 [0.003505] C 2020yCat.1350....0G J 11.692 [0.023] C 2006AJ....131.1163S H 10.953 [0.023] C 2006AJ....131.1163S K 9.937 [0.020] C 2006AJ....131.1163S u (AB) 13.859 [0.005] C 2009ApJS..182..543A g (AB) 12.990 [0.002] C 2009ApJS..182..543A r (AB) 12.871 [0.002] C 2009ApJS..182..543A i (AB) 12.630 [0.002] C 2009ApJS..182..543A z (AB) 13.242 [0.006] C 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: in 2002ApJ...575..697T and 2005ApJ...620...95T : z = 0.00337

3C 273	1FLE J1227+0218	PKS 1226+02	XSS J12288+0200
2A 1225+022	GRA B1226+02	PLCKERC -857 G289.96+64.35	9Y-MST J1229+0200
3A 1226+023	GSC 00282-00202	PLX 2877.01	[BAG2012] 187.2817+02.04932
1AGL J1228+0142	1H 1226+022	PMN J1229+0203	[BDW2002] q1226+0219
2AGL J1228+0154	HE 1226+0219	PSCz Q12265+0219	[CGL99] 11
AKARI-FIS-V1 J1229071+020309	H 1226+023	QSO B1226+0219	[CMG2008] 188.75+3.14
Balloon 110607001	HIC 60936	QSO J1229+0203	[DGT2001] B1226+023
3C 273B	HIP 60936	QSO B1226+023	[DGW65] 56
3C 273.0	ICRF J122906.6+020308	RBS 1114	[DML87] 295
4C 02.32	IERS B1226+023	RGB J1229.1+0203	[GGR94] 1226+023
1CG 291+65	IGR J12291+0203	RORF 1226+023	[GR92] 1226+023
2CG 289+64	INTREF 500	RX J122906+02031	[GW2008] CoNFIG 137
CGRaBS J1229+0203	IRAS F12265+0219	RX J1229.1+0203	[HB93] 1226+023
3CR 273	IRAS 12265+0219	1RXS J122906.5+020311	[IN88] 1226+023
CTA 53	JVAS B1226+023	SDSS J122906.69+020308.5	[KRL2007b] 118
CWISE J122906.70+020308.6	JVAS J1229+0203	SDSS J122906.69+020308.6	[MGL2009] BZQ J1229+0203
CWISEP J122906.70+020308.6	1Jy 1226+023	SIM 1226+02.0	[MML2015] 5BZQ J1229+0203
DA 324	1Jy 1226+02	SWIFT J1229.1+0202	[POS96] 8
2E 2729	LAMOST J122906.69+020308.6	SWIFT J1229.1+0203	[PUC81] 3C 273 B
2E 1226.5+0219	LAMOST J122906.41+020305.1	TYC 282-202-1	[S77] 207
2EG J1229+0206	LAMOST J122906.70+020308.6	2U 1224+02	[VV2000] J122906.7+020308
3EG J1229+0210	LEDA 41121	3U 1224+02	[VV2003] J122906.7+020308
EGR J1229+0203	2MASX J12290674+0203083	4U 1226+02	[VV2006] J122906.7+020308
EPIC 229151988	MRC 1226+023	USNO 731	[VV2010] J122906.7+020308
1ES 1226+02.3	MSH 12+0-08	UVQS J122906.69+020308.6	[VV96] J122906.7+020308
2EUVE J1229+02.0	NEWPS5 J1229+0203	VSOP J1229+0202	[VV98] J122906.7+020308
EUVE J1229+02.0	NRAO 400	VSOP J1229+0203	[VYP98] 1226+023
0FGL J1229.1+0202	NVSS J122906+020305	WB 1226+0219	[WTW94] 1226+023
1FGL J1229.1+0203	OHIO N 044	WISEA J122906.69+020308.6	[WZX98] 12265+0219
2FGL J1229.1+0202	PBC J1229.1+0202	WISE J122906.69+020308.6	[ZEH2003] RX J1229.1+0203 1
3FGL J1229.1+0202	PG 1226+02	WISE J122906.70+020308.6	AAVSO 1224+02
4FGL J1229.0+0202	PG 1226+023	WMAP J1229+0202	Gaia EDR3 3700386905605055360
4FGL J1229.1+0202	PKS 1226+023	2XMM J122906.6+020308	Gaia DR1 3700386901308864384
3FHL J1229.2+0201	PKS J1229+0203	2XMMi J122906.6+020308	Gaia DR2 3700386905605055360

References (5559 between 1850 and 2022) (Total 5559) 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 : 3C 273

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