3C 66A

Basic data :
3C 66A -- 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 (2020A&A,6C,...), gam (2AGL,1AGLR,...), BLL (2010ApJ,[VV2000b],...), QSO (2016A&A,QSO,...), Bla (2013ApJS,[DGT2001],...), X (2009A&A,2E,...), AGN (2011ApJ), V* (2018AJ,AAVSO), * (AP,Gaia), MIR (WISEA,WISE), NIR (2MASS), Opt (ATO) 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 22 39.6114771888 +43 02 07.799534304 (Optical) [ 0.0212 0.0214 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) : 02 19 29.9857537095 +42 48 29.703771353 [ 0.0212 0.0214 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) : 140.1429677323779 -16.7669185516876 [ 0.0212 0.0214 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 : 0.014 -0.080 [0.028 0.029 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) 90.320503 [0.054941] / z(spectroscopic) 0.000301 [0.000000] / cz 90.33 [0.05]    (NIR) A 2020AJ....160..120J 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): 0.0620 [0.0523] 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 (7) : B 15.71 [~] D 2010A&A...518A..10V V 15.21 [~] D 2010A&A...518A..10V R 14.5 [~] E 2009A&A...495..691M G 14.591449 [0.011298] C 2020yCat.1350....0G J 12.635 [0.023] C 2003yCat.2246....0C H 11.880 [0.022] C 2003yCat.2246....0C K 11.151 [0.022] C 2003yCat.2246....0C	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.

6C 021932+424742	2FGL J0222.6+4302	MY 021929.5+430151.2	[HB93] 0219+428
2AGL J0221+4250	3FGL J0222.6+4301	NVSS J022239+430208	[IN88] 0219+428
1AGLR J0222+4305	4FGL J0222.6+4302	PKS 0219+428	[MGL2009] BZB J0222+4302
AP J02223961+4302078	1FHL J0222.6+4302	QSO J0222+4302A	[MML2015] 5BZB J0222+4302
ATO J035.6650+43.0355	2FHL J0222.6+4301	QSO B0219+4248	[N73] 3C 66A
B3 0219+428A	3FHL J0222.6+4302	QSO B0219+428	[OR76] 0219+428
BWE 0219+4248	1FLE J0219+4256	QSO J0222+4302	[S77] 59
3C 66A	GB6 J0222+4302	1REX J022239+4302.1	[SDM85] 3CR 66A
7C 021929.69+424830.00	GB6 B0219+4248	RORF 0219+428	[VV2000b] J022239.6+430208
CJF B0219+428	87GB 021932.0+424811	1RXS J022239.1+430220	[VV2003b] J022239.6+430208
CLASS J022239.6086+430207.852	GeV J0223+4254	TeV J0222+430	[VV2006b] J022239.6+430208
2E 558	GRO J0222+42	TGSSADR J022239.2+430211	[VV2010b] J022239.6+430208
2E 0219.5+4248	ICRF J022239.6+430207	TIC 293121581	[VV98b] J022239.6+430208
2EG J0220+4228	IERS B0219+428	VLSSr J022239.4+430204	[W72] 0219+42
3EG J0222+4253	INTREF 110	VLSS J0222.6+4302	[WTW94] 0219+428
EGR J0223+4300	IVS B0219+428	WISEA J022239.60+430207.8	AAVSO 0216+42
1ES 0219+42.8	MAGIC J0223+403	WISE J022239.60+430207.8	Gaia DR3 339755075874658560
0FGL J0222.6+4302	2MASS J02223961+4302078	[BDW2002] q0219+4248	Gaia DR1 339755071579064192
1FGL J0222.6+4302	MITG J022237+4301	[DGT2001] B0219+428	Gaia DR2 339755075874658560

References (872 between 1850 and 2023) (Total 872) 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 66A

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