3C 277.3

Basic data :
3C 277.3 -- 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: rG (), Rad (7C,B2,...), G (2018MNRAS,GMP,...), AGN (2010A&A,[HB91],...), GiC (2003AJ,CAIRNS), Sy2 (2014ApJ), BLL (2019ApJS), * (Gaia), MIR (WISEA), Opt (SDSS) 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 54 12.0071453880 +27 37 33.952663740 (Optical) [ 7.1310 3.8055 90 ] C 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 51 46.3058454075 +27 53 49.357634931 [ 7.1310 3.8055 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) : 072.1623529425872 +89.2101453331337 [ 7.1310 3.8055 90 ] 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) 24628 [3] / z(spectroscopic) 0.08582 [0.00001] / cz 25728.2 [3.0]    (Opt) C 2015ApJS..219...12A Syntax of morphological type is : mtype quality bibcode mtype : Hubble morphological class (spirals, ellipticals, etc) quality : flag of quality (A=best quality -> E=worst quality, {� } =unknown quality) bibcode : bibcode of the morphological type reference Morphological type: E D ~ 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): 0.240 0.202 15 (NIR) C 2006AJ....131.1163S 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 (10) : B 15.94 [~] E ~ G 20.882938 [0.017066] C 2020yCat.1350....0G J 13.625 [0.069] C 2006AJ....131.1163S H 13.074 [0.102] D 2006AJ....131.1163S K 12.480 [0.085] C 2006AJ....131.1163S u (AB) 18.477 [0.036] C 2012ApJS..203...21A g (AB) 16.544 [0.004] B 2012ApJS..203...21A r (AB) 15.613 [0.003] B 2012ApJS..203...21A i (AB) 15.157 [0.003] B 2012ApJS..203...21A z (AB) 14.871 [0.007] 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!).
Some important notes on this object about identifications and objects associations. notes: See also Specfind radio flux densities.

7C 125146.0+275350	DA 334	NRAO 411	7W 1251+27W02
B2 1251+27 B	GB6 B1251+2753	NVSS J125411+273732	WB 1251+2753
B2.2 1251+27 B	87GB 125147.0+275345	PiGSS J125411+273733	WISEA J125412.01+273733.9
BWE 1251+2753	GLEAM J125411+273735	S3 1251+27	[CRJ2004] J1254.1+2737
3C 277.3	GMP 6565	SDSS J125412.01+273733.9	[GW2008] CoNFIG 150
4C 27.22	1Jy 1251+278	SDSS J125412.00+273733.9	[HB91] 1251+278
5C 4.19	1Jy 1251+27	TGSSADR J125411.7+273732	[HGV2016] J125411.72+273732.7
7C 125146.10+275350.00	LEDA 43882	TT 22	[K94] 125146.32+275345.1
CAIRNS J125412.00+273732.0	2MASX J12541205+2737341	TXS 1251+278	[VV2010c] J125412.0+273732
3CR 277.3	MITG J125411+2737	VLSSr J125411.8+273729	[W72] 1251+27
CTD 78	NAME Coma A	VLSS J1254.1+2737	Gaia DR3 3961737589711754752
Cul 1251+278	NGP9 F323-1034743	VRO 27.12.01

References (366 between 1850 and 2024) (Total 366) 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

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Data at NED - NASA/IPAC Extragalactic Database : 3C 277.3

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