6C 121520+302351

Basic data :
6C 121520+302351 -- 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,7C,...), gam (0FGL,1FGL,...), X (2009A&A,1AXG,...), BLL (2010ApJ,[VV2000b],...), Bla (2013ApJS,[DGT2001],...), QSO (2016A&A,QSO,...), AGN (2011ApJ,CGRaBS), Opt (ATO,LAMOST,...), Bz? (2WHSP,[SRM2005]), G (2018MNRAS), MIR (WISEA,WISE), Q? (FBQS), GiC (CAIRNS), V* (2018AJ), * (Gaia), blu (CSO), 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) : 12 17 52.0819904040 +30 07 00.634936872 (Optical) [ 0.0248 0.0206 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 15 21.1479218549 +30 23 40.058774783 [ 0.0248 0.0206 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) : 188.8748625190305 +82.0528780724688 [ 0.0248 0.0206 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 : -0.012 0.048 [0.028 0.025 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) 36459 [~] / z(spectroscopic) 0.13 [~] / cz 38973 [~]    (Opt) D 2017ApJS..233....3T 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 16.07 [~] D 2010A&A...518A..10V V 15.62 [~] D 2010A&A...518A..10V R 13.47 [~] D 2008ApJS..175...97H G 14.507189 [0.010554] C 2020yCat.1350....0G J 13.370 [0.024] C 2003yCat.2246....0C H 12.708 [0.023] C 2003yCat.2246....0C K 11.986 [0.019] C 2003yCat.2246....0C u (AB) 15.914 [0.006] B 2009ApJS..182..543A g (AB) 15.500 [0.003] B 2009ApJS..182..543A r (AB) 15.157 [0.003] B 2009ApJS..182..543A i (AB) 14.932 [0.004] B 2009ApJS..182..543A z (AB) 14.744 [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.

7C 121521.4+302347	1FHL J1217.8+3006	QSO J1217+3007	WISE J121752.08+300700.7
ATO J184.4670+30.1168	2FHL J1217.9+3006	RBS 1093	WISE J121752.08+300700.6
1AXG J121752+3006	3FHL J1217.9+3006	1REX J121752+3007.0	WN B1215.3+3023
B2 1215+30	FIRST J121752.0+300700	RFC J1217+3007	9Y-MST J1217+3007
B2.1 1215+30	1FLE J1219+2943	RGB J1217+301	[ATZ98] D096
BWE 1215+3023	GB6 B1215+3023	RGB J1217.9+3007	[AUO2003] J121752.07+300700.6
6C 121520+302351	87GB 121521.3+302316	RORF 1215+303	[CRJ2004] J1217.8+3006
7C 121521.39+302340.00	HELLAS 265	RX J1217.9+3007	[DGT2001] B1215+303
CAIRNS J121752.08+300700.6	ICRF J121752.0+300700	RX J1217.8+3007	[HB93] 1215+303
CGRaBS J1217+3007	IERS B1215+303	1RXS J121752.1+300705	[IN88] 1215+303
CLASS J121752.0837+300700.625	IVS B1215+303	S3 1215+30	[MGL2009] BZB J1217+3007
CRATES J121752+300657	JVAS J1217+3007	SDSS J121752.08+300700.6	[MML2015] 5BZB J1217+3007
CSO 130	JVAS B1215+303	TeV J1217+301	[SRM2005] J121752.08+300700.6
2E 2644	LAMOST J121752.08+300700.6	TGSSADR J121752.2+300659	[VV2000b] J121752.0+300701
2E 1215.3+3023	LAMOST J121752.07+300700.7	TIC 139069680	[VV2003b] J121752.0+300701
1ES 1215+30.3	2MASS J12175207+3007007	TXS 1215+303	[VV2006b] J121752.0+300701
EXO 1215.3+3022	MITG J121751+3007	VER J1217+301	[VV2010b] J121752.0+300701
FBQS J1217+3007	NRAO 1215+30	VIPS J12178+3007	[VV98b] J121752.0+300701
0FGL J1218.0+3006	NVSS J121752+300700	VLSSr J121752.5+300656	[ZEH2003] RX J1217.8+3007 1
1FGL J1217.7+3007	OHIO N 325	VLSS J1217.8+3007	Gaia DR3 4013512389672203264
2FGL J1217.8+3006	OHIO N 235	WB 1215+3023	Gaia DR1 4013512385376622080
3FGL J1217.8+3007	PKS 1215+303	2WHSP J121752.0+300700	Gaia DR2 4013512389672203264
4FGL J1217.9+3007	QSO B1215+303	WISEA J121752.08+300700.6

References (461 between 1850 and 2023) (Total 461) 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 : 6C 121520+302351

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