MS1221.8+2452

Basic data :
QSO B1221+24 -- 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,BWE,...), BLL (2010A&A,[VV2000b],...), gam (2FGL,3FGL,...), Bla (2016ApJS,[DGT2001],...), X (2009A&A,1E,...), Bz? (2019A&A,3HSP,...), G (2014ApJ), Opt (ATO,LAMOST,...), QSO (2015MNRAS,QSO), MIR (WISEA,WISE), rG (2018AJ), AGN (2011ApJ), Q? (FBQS), GiC (CAIRNS), V* (2018AJ), * (Gaia), 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 24 24.1862962656 +24 36 23.499792828 (Optical) [ 0.0454 0.0560 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 21 53.5347071543 +24 53 00.476837328 [ 0.0454 0.0560 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) : 233.9521692422670 +83.4177779122247 [ 0.0454 0.0560 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 : -0.112 0.006 [0.059 0.075 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) 58528 [27] / z(spectroscopic) 0.21868 [0.00009] / cz 65558.6 [27.0]    (Opt) C 2012ApJS..203...21A 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): 0.1159 [0.1038] 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 (11) : B 17.93 [~] D 2010A&A...518A..10V V 17.37 [~] D 2010A&A...518A..10V G 16.461020 [0.016034] C 2020yCat.1350....0G J 15.404 [0.058] C 2003yCat.2246....0C H 14.620 [0.066] C 2003yCat.2246....0C K 14.009 [0.058] C 2003yCat.2246....0C u (AB) 17.271 [0.009] B 2012ApJS..203...21A g (AB) 16.965 [0.004] B 2012ApJS..203...21A r (AB) 16.704 [0.005] B 2012ApJS..203...21A i (AB) 16.522 [0.005] B 2012ApJS..203...21A z (AB) 16.367 [0.008] B 2012ApJS..203...21A	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!).

QSO B1221+24	3FHL J1224.4+2436	QSO B1221+249	[DGT2001] B1221+2452
ATO J186.1007+24.6065	FIRST J122424.1+243623	RGB J1224+246	[MGL2009] BZB J1224+2436
BWE 1221+2452	GB6 B1221+2452	RX J1224.4+2436	[MML2015] 5BZB J1224+2436
CAIRNS J122424.18+243623.5	87GB 122151.4+245224	1RXS J122424.2+243618	[VV2000b] J122424.3+243624
1E 1221.8+2452	3HSP J122424.2+243623	SDSS J122424.19+243623.5	[VV2003b] J122424.3+243624
2E 2693	ICRF J122424.1+243623	TeV J1224+246	[VV2006b] J122424.3+243624
2E 1221.9+2452	IERS B1221+248	TGSSADR J122424.1+243624	[VV2010b] J122424.3+243624
FBQS J1224+2436	IVS B1221+248	TIC 284062833	[VV98b] J122424.3+243624
2FGL J1224.4+2436	1Jy 1221+245	2WHSP J122424.1+243623	[ZEH2003] RX J1224.4+2436 1
3FGL J1224.5+2436	LAMOST J122424.19+243623.5	WISEA J122424.18+243623.5	Gaia DR3 3960155632997066496
4FGL J1224.4+2436	2MASS J12242418+2436234	WISE J122424.20+243623.6	Gaia DR2 3960155632997066496
1FHL J1224.5+2437	NVSS J122424+243623	WISE J122424.18+243623.5
2FHL J1224.4+2435	QSO B1221+248	9Y-MST J1224+2437

References (140 between 1850 and 2024) (Total 140) 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 : MS1221.8+2452

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