6C 173812+495621

Basic data :
6C 173812+495621 -- 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 (2014ApJS,6C,...), QSO (2005ApJ,QSO,...), gam (EGR,2FGL,...), Bla (2009A&A,[MGL2009],...), IR (2MASS,WISEA,...), AGN (2011ApJ,CGRaBS), Bz? (2013ApJS,[SRM2005]), X (2009A&A,RX), * (Gaia) 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) : 17 39 27.39049431 +49 55 03.3683385 (Radio) [ 0.0379572 0.0418 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) : 17 38 12.69332232 +49 56 35.7221681 [ 0.0379572 0.0418 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) : 076.87681360671 +31.73026113169 [ 0.0379572 0.0418 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 : -0.197 0.040 [0.187 0.203 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) 219329 [~] / z(spectroscopic) 1.54 [~] / cz 461680 [~]    (Opt) D 2017ApJS..233....3T 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): 0.2139 [0.2522] 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 (7) : B 18.6 [~] E ~ V 19.0 [~] E ~ R 17.83 [~] D 2008ApJS..175...97H G 18.934883 [0.042360] C 2020yCat.1350....0G J 16.714 [0.150] D 2003yCat.2246....0C H 15.719 [0.158] D 2003yCat.2246....0C K 14.930 [0.098] 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.

6C 173812+495621	GB6 B1738+4956	RGB J1739+499	[HB93] 1738+499
BWE 1738+4956	87GB 173813.9+495634	RGB J1739.5+4955	[HMI96] 1738+4956
7C 173812.69+495636.00	ICRF J173927.3+495503	RX J1739.3+4954	[MGL2009] BZQ J1739+4955
CGRaBS J1739+4955	IERS B1738+499	S4 1738+499	[MML2015] 5BZQ J1739+4955
CJ2 1738+499	IVS B1738+499	S4 1738+49	[SRM2005] J173927.39+495503.3
CJF B1738+499	JVAS B1738+499	TIC 284968168	[VV2000] J173927.4+495504
CLASS J173927.3958+495503.383	JVAS J1739+4955	TXS 1738+499	[VV2003] J173927.4+495504
EGR J1740+4946	JVAS J1739+499	VLSS J1739.4+4955	[VV2006] J173927.4+495504
2FGL J1739.5+4955	2MASS J17392739+4955032	WB 1738+4956	[VV2010] J173927.4+495504
3FGL J1739.4+4955	MITG J173930+4954	WISEA J173927.38+495503.4	[VV96] J173927.4+495504
4FGL J1739.5+4955	MY 173812.8+495623.6	WISE J173927.39+495503.4	[VV98] J173927.4+495504
1FHL J1739.3+4953	NVSS J173927+495503	WISE J173927.38+495503.4	Gaia DR3 1367189073589443968
3FHL J1739.4+4955	OHIO T 463	WN B1738.2+4956	Gaia DR1 1367189073589443968
FIRST J173927.3+495503	QSO B1738+499	9Y-MST J1739+4955	Gaia DR2 1367189073589443968

References (84 between 1850 and 2023) (Total 84) 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 : 6C 173812+495621

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