@3256

Basic data :
NAME BL Lac -- 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,B3,...), gam (2AGL,3EG,...), X (2009A&A,1AXG,...), BLL (2010ApJ,[VV2000b],...), Bla (2012ApJ,[DGT2001],...), QSO (2009ApJS,QSO,...), * (PLX,UCAC2,...), V* (2018AJ,AN,...), AGN (2011ApJ), smm (JCMTSE,JCMTSF), MIR (AKARI,WISE), IR (IRAS,[MJR2015]), BL? (2021MNRAS), Bz? (2022ApJS), NIR (2MASS), FIR (2015A&A), 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) : 22 02 43.2913536816 +42 16 39.979416792 (Optical) [ 0.0089 0.0105 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) : 22 00 39.3732819578 +42 02 08.493248589 [ 0.0089 0.0105 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) : 092.5895829969987 -10.4411578855454 [ 0.0089 0.0105 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 : 0.008 0.018 [0.012 0.013 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) 18996 [150] / z(emission) 0.06550448 [0.0005] / cz 19637.7491 [150]    (Opt) C 2022ApJS..261....2K 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): 1.9 [3.5] E 1995GCTP..C......0V 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): 0.0000105 0.0000057 17 (Rad) D 2010AJ....139.1713C 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 (6) : B 15.66 [~] D 2010A&A...518A..10V V 14.72 [~] D 2010A&A...518A..10V G 13.773007 [0.012811] C 2020yCat.1350....0G J 12.201 [0.029] C 2003yCat.2246....0C H 11.295 [0.037] C 2003yCat.2246....0C K 10.485 [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.

QSO B2200+420	1FLE J2203+4214	RFC J2202+4216	2XMMi J220243.3+421639
2AGL J2202+4214	GB6 J2202+4216	RGB J2202+422	XSS J22023+4226
AKARI-IRC-V1 J2202433+421640	GB6 B2200+4202	RGB J2202.7+4216	[BDW2002] q2200+4202
AN 363.1929	87GB 220040.2+420203	RORF 2200+420	[CAB95] IRAS F22006+4202
ATO J330.6803+42.2777	ICRF J220243.2+421639	RX J2202.7+4216	[CGL99] 23
1AXG J220245+4217	IERS B2200+420	1RXS J220244.4+421626	[DGT2001] B2200+420
B3 2200+420	INTREF 1067	S4 2200+42	[HB93] 2200+420
BWE 2200+4202	IRAS F22006+4202	S4 2200+420	[IN88] 2200+420
CJ1 2200+420	JCMTSE J220243.3+421637	SWIFT J2202.8+4218	[KRL2007b] 392
CJF B2200+420	JCMTSF J220243.3+421637	SWIFT J2202.8+4216	[LC2007] 80
CLASS J220243.2912+421639.975	JVAS J2202+422	TeV J2202+422	[MGL2009] BZB J2202+4216
DA 571	JVAS B2200+420	TIC 353622691	[MJR2015] 3610
2E 2200.6+4202	1Jy 2200+420	TXS 2200+420	[MML2015] 5BZB J2202+4216
2E 4558	1Jy 2200+42	UCAC2 46472356	[VV2000b] J220243.3+421639
3EG J2202+4217	2MASS J22024329+4216400	USNO 770	[VV2003b] J220243.3+421639
3EG J2202+4225	MITG J220245+4216	V* BL Lac	[VV2006b] J220243.3+421639
EGR J2204+4225	MY 220039.2+421611.9	VLSSr J220243.8+421643	[VV2010b] J220243.3+421639
1ES 2200+42.0	NAME BL Lac	VLSS J2202.7+4216	[VV98b] J220243.3+421639
0FGL J2202.4+4217	NEWPS5 J2202+4216	VRO 42.22.01	[W72] 2200+42
1FGL J2202.8+4216	NVSS J220243+421640	VSOP J2202+4216	[WCO2009] J220247+421737
2FGL J2202.8+4216	OHIO Y 401	WB 2200+4202	AAVSO 2158+41
3FGL J2202.7+4217	PBC J2202.7+4217	WISE J220243.29+421640.0	Gaia DR3 1960066225988786048
4FGL J2202.7+4216	PCCS2 143 G092.58-10.44	WISE J220243.29+421639.9	Gaia DR1 1960066221690852224
1FHL J2202.7+4216	PKS 2200+420	WMAP 58	Gaia DR2 1960066225988786048
2FHL J2202.7+4216	PLX 5322.02	WMAP J2202+4217
3FHL J2202.7+4216	QSO J2202+4216	WN B2200.6+4202

References (2258 between 1850 and 2024) (Total 2258) 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 : NAME BL Lac

Link by name to the catalogue in VizieR :

Search by coordinates in Vizier (radius: 5 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 .

display existing annotations (1)

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:@3256 and select 'bookmark this link' or equivalent in the popup menu