4C 72.28

Basic data :
4C 72.28 -- 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,4C,...), BLL (2010ApJ,[VV2000b],...), gam (2AGL,1FGL,...), Bz? (2013ApJS,[SRM2005]), Bla ([MGL2009],[MML2015]), AGN (2011ApJ,CGRaBS), MIR (WISEA,WISE), QSO (2016A&A), BL? (2021MNRAS), * (Gaia), X (2009A&A) 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 09 52.3047264984 +72 29 19.351077612 (Optical) [ 0.1026 0.0894 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 10 16.2426098151 +72 20 20.692454153 [ 0.1026 0.0894 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) : 105.3551499335062 +20.1808206794557 [ 0.1026 0.0894 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 : -0.255 -0.028 [0.162 0.135 90] A 2020yCat.1350....0G 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): 0.0917 [0.0995] 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 (3) : B 19.0 [~] E ~ R 19.40 [~] D 2008ApJS..175...97H G 18.239714 [0.022831] C 2020yCat.1350....0G	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.

4C 72.28	3FHL J2009.8+7228	S5 2010+723	[P82] 2010+723
2AGL J2005+7225	GB3 2010+723	TGSSADR J200952.3+722920	[PGB2011] J2009+7229
BWE 2010+7220	GB6 B2010+7220	VCS1 J2009+7229	[SRM2005] J200952.30+722919.3
6C 201016+722031	87GB 201016.3+722012	VLSSr J200952.1+722911	[VV2000b] J200952.3+722919
8C 2010+723	ICRF J200952.3+722919	VLSS J2009.8+7229	[VV2003b] J200952.3+722919
CGRaBS J2009+7229	IERS B2010+723	WB 2010+7220	[VV2006b] J200952.3+722919
CJ1 2010+723	IVS B2010+723	WISEA J200952.29+722919.3	[VV2010b] J200952.3+722919
CJF B2010+723	JVAS J2009+724	WISE J200952.29+722919.3	[VV98b] J200952.3+722919
CLASS J200952.3004+722919.350	JVAS B2010+723	WMAP J2009+7229	Gaia DR3 2275785350608146816
CRATES J200952+722916	KNOWS J200955+722920	WN B2010+7220	Gaia DR1 2275785350608146816
1FGL J2009.1+7228	MASIV J2009+7229	WN B2010.2+7220	Gaia DR2 2275785350608146816
2FGL J2009.7+7225	NVSS J200952+722919	9Y-MST J2009+7229
3FGL J2010.3+7228	RFC J2009+7229	[MGL2009] BZB J2009+7229
4FGL J2010.0+7229	S5 2010+72	[MML2015] 5BZB J2009+7229

References (114 between 1850 and 2024) (Total 114) 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 : 4C 72.28

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