8C 2007+777

Basic data :
8C 2007+777 -- 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 (2014ApJS,8C,...), BLL (2011NewA,[VV2000b],...), Bla (2013ApJS,[DGT2001],...), gam (1FGL,2FGL,...), QSO (2016A&A,QSO,...), AGN (2011ApJ,CGRaBS), X (2009A&A,2E,...), Bz? (2013ApJS,[SRM2005]), MIR (WISEA,WISE), V* (AAVSO), * (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) : 20 05 30.9987913056 +77 52 43.248139536 (Optical) [ 0.0268 0.0244 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) : 20 07 20.4717954403 +77 43 58.076757030 [ 0.0268 0.0244 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) : 110.4647168873699 +22.7343081412026 [ 0.0268 0.0244 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 : -0.042 -0.038 [0.037 0.032 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) 85729 [~] / z(spectroscopic) 0.342 [~] / cz 102529 [~]    D 2011NewA...16..503M 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): 0.0154 [0.0256] A 2020yCat.1350....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 (6) : V 16.5 [~] E ~ R 17.36 [~] D 2008ApJS..175...97H G 15.898216 [0.020474] C 2020yCat.1350....0G J 15.462 [0.067] C 2003yCat.2246....0C H 14.552 [0.052] C 2003yCat.2246....0C K 13.827 [0.070] 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.

8C 2007+777	JVAS B2007+777	S5 2007+776	[HB93] 2007+777
6C 200718+774350	JVAS J2005+7752	S5 2007+77	[IN88] 2007+777
CGRaBS J2005+7752	1Jy 2007+777	TIC 237294392	[MGL2009] BZB J2005+7752
CJ1 2007+777	1Jy 2007+77	VSOP J2005+7752	[MML2015] 5BZB J2005+7752
CJF B2007+777	KNOWS J200539+775252	WB 2007+7743	[P82] 2007+776
CLASS J200530.9974+775243.238	MASIV J2005+7752	WISEA J200530.98+775243.2	[SRM2005] J200530.99+775243.2
2E 4325	2MASS J20053100+7752432	WISE J200531.01+775243.2	[VV2000b] J200531.1+775243
2E 2007.3+7744	MY 200730.1+774408.1	WISE J200530.98+775243.2	[VV2003b] J200531.1+775243
1FGL J2006.0+7751	MY 200730.1+775253.9	WMAP J2005+7755	[VV2006b] J200531.1+775243
2FGL J2004.5+7754	NVSS J200531+775243	WMAP J2005+7754	[VV2010b] J200531.1+775243
3FGL J2005.2+7752	QSO B2007+776	WMAP J2005+7752	[VV98b] J200531.1+775243
4FGL J2005.5+7752	QSO J2005+77	WMAP J2005+7753	AAVSO 2009+77
3FHL J2005.9+7753	QSO B2007+777	WMAP J2004+7746	Gaia DR3 2291355710864269824
ICRF J200530.9+775243	RORF 2007+777	WN B2007.3+7743	Gaia DR1 2291355706567653888
IERS B2007+777	1RXS J200529.2+775240	9Y-MST J2005+7752	Gaia DR2 2291355710864269824
IVS B2007+777	S5 2007+777	[DGT2001] B2007+777

References (432 between 1850 and 2023) (Total 432) 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 : 8C 2007+777

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