4C 38.28

Basic data :
4C 38.28 -- Quasar 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 (2012ApJ,4C,...), QSO (2011MNRAS,[HB93],...), Bla (2009A&A,[MGL2009],...), X (2007AJ,RX,...), AGN (2007AJ), gam (2FGL,3FGL,...), Q? (2021MNRAS,F2M), MIR (WISEA,WISE), AG? (2022ApJS), G (LEDA), * (Gaia), NIR (2MASS), IR (2MASSI), 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) : 09 16 48.90457434 +38 54 28.1463634 (Radio) [ 0.0821734 0.1156 0 ] A 2020A&A...644A.159C 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) : 09 13 39.51906740 +39 07 02.2060653 [ 0.0821734 0.1156 0 ] 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) : 183.84393535804 +44.17242401789 [ 0.0821734 0.1156 0 ] 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 : -0.073 -0.175 [0.221 0.230 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) 202201 [~] / z(spectroscopic) 1.268000 [~] / cz 380136.84 [~]    (Opt) D 2018A&A...613A..51P 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): 0.2468 [0.2309] 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 (12) : B 19.92 [~] D 2010A&A...518A..10V V 19.38 [~] D 2010A&A...518A..10V R 18.77 [~] D 2012ApJ...757...51G G 18.818781 [0.012449] C 2020yCat.1350....0G J 16.590 [0.144] C 2010AJ....139.2360S H 15.955 [0.178] C 2010AJ....139.2360S K 14.730 [0.114] C 2010AJ....139.2360S u (AB) 19.5713 [0.0339] C 2020ApJS..250....8L g (AB) 19.3569 [0.0225] C 2020ApJS..250....8L r (AB) 18.8626 [0.0219] C 2020ApJS..250....8L i (AB) 18.6235 [0.0173] C 2020ApJS..250....8L z (AB) 18.3338 [0.0313] C 2020ApJS..250....8L	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 38.28	GB2 0913+391	RGB J0916+389	WISEA J091648.88+385428.2
B2 0913+39	GB6 B0913+3907	RX J0916.8+3854	WISE J091648.89+385428.2
B2.3 0913+39	87GB 091338.0+390704	1RXS J091648.1+385456	WISE J091648.88+385428.2
B3 0913+391	ICRF J091648.9+385428	S4 0913+391	WN B0913.6+3907
B3VLA 0913+391	IERS B0913+391	S4 0913+39	[HB93] 0913+391B
BWE 0913+3907	IVS B0913+391	SDSS J091648.90+385428.1	[HB93] 0913+391A
6C 0913+3907	JVAS B0913+391	SDSS J091648.90+385428.2	[MGL2009] BZQ J0916+3854
6C 091339+390700	JVAS J0916+389	TGSSADR J091648.9+385428	[MML2015] 5BZQ J0916+3854
7C 091339.39+390701.00	JVAS J0916+3854	TIC 39066620	[VV2000] J091648.9+385427
CJ2 0913+391	LEDA 2820561	TXS 0913+391	[VV2003] J091648.9+385427
CLASS J091648.9054+385428.143	2MASS J09164889+3854282	UT 0913+391	[VV2006] J091648.9+385427
F2M J091648.91+385428.3	2MASSI J0916488+385428	VCS1 J0916+3854	[VV2010] J091648.9+385427
F2M J091648.89+385428.0	MITG J091651+3853	VIPS J09168+3854	[VV96] J091648.9+385427
2FGL J0917.0+3900	MY 091339.8+385413.9	VLSSr J091649.3+385437	[VV98] J091648.9+385427
3FGL J0916.3+3857	NVSS J091648+385428	VLSS J0916.8+3854	Gaia DR3 812202917246316416
4FGL J0916.7+3856	OHIO K 323	VSOP J0916+3854	Gaia DR1 812202917246316416
FIRST J091648.8+385428	RGB J0916.8+3854	WB 0913+3907	Gaia DR2 812202917246316416

References (143 between 1850 and 2024) (Total 143) 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 38.28

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