3C 234

Basic data :
3C 234.0 -- Seyfert 1 Galaxy 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 (7C,B2,...), AGN ([HB91],[VV2000c],...), QSO (QSO,[BDW2002],...), MIR (AKARI,WISEA,...), G (LEDA,2MASX), X (PBC,SWIFT), Sy1 (2013ApJS), * (Gaia), blu (CSO), gam (INTREF), IR (IRAS), 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) : 10 01 49.5227371368 +28 47 08.943487440 (Optical) [ 0.1870 0.1614 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) : 09 58 57.3871907551 +29 01 37.682501957 [ 0.1870 0.1614 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) : 200.2067267344728 +52.7068300198828 [ 0.1870 0.1614 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 : 0.061 -1.367 [0.252 0.211 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) 50365 [150] / z(emission) 0.18484097 [0.0005] / cz 55413.9287 [150]    (Opt) C 2022ApJS..261....2K 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): 0.160 0.160 90 (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 (11) : B 18.21 [~] D 2010A&A...518A..10V V 17.27 [~] D 2010A&A...518A..10V G 17.960020 [0.003956] C 2020yCat.1350....0G J 14.740 [0.129] D 2006AJ....131.1163S H 13.661 [0.103] D 2006AJ....131.1163S K 12.744 [0.074] C 2006AJ....131.1163S u (AB) 18.548 [0.018] C 2011yCat.2306....0A g (AB) 17.955 [0.006] B 2011yCat.2306....0A r (AB) 16.828 [0.004] B 2011yCat.2306....0A i (AB) 16.627 [0.005] B 2011yCat.2306....0A z (AB) 16.846 [0.011] C 2009ApJS..182..543A	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 095855.9+290131	DB 72	OHIO L 200	[BDW2002] q0958+2901
AKARI-IRC-V1 J1001495+284708	GB6 B0958+2901	PBC J1001.8+2847	[CAB95] IRAS F09589+2901
B2 0958+29	87GB 095856.9+290154	QSO B0958+2901	[GW2008] CoNFIG 64
B2.2 0958+29	GLEAM J100147+284659	QSO J1001+2847	[HB91] 0958+290
BWE 0958+2901	GRA B0959+28	QSO B0958+290	[VV2000c] J100149.5+284710
3C 234.0	GRA J1001+28	S2 0958+29	[VV2003c] J100149.5+284710
3C 234	INTREF 402	SDSS J100149.52+284708.9	[VV2006c] J100149.5+284710
4C 29.35	IRAS 09589+2901	SWIFT J1001.8+2848	[VV2010c] J100149.5+284710
7C 0958+2901	IRAS F09589+2901	TGSSADR J100148.6+284709	[VV98c] J100149.5+284710
7C 095855.89+290131.00	1Jy 0958+290	TXS 0958+290	[W72] 0958+29
3CR 234	1Jy 0958+29	UT 0958+290	[WTW94] 0958+290
CSO 31	LEDA 139234	VLSS J1001.8+2847	EQ J1001+287
CTA 49	LHE 265	VRO 29.09.03	Gaia DR3 743659018773360128
CTD 64	2MASX J10014950+2847089	WB 0958+2901	Gaia DR2 743659018773360128
Cul 0958+290	MITG J100147+2846	WISEA J100149.52+284708.9
Cul 0958+29	NRAO 343	WISE J100149.52+284709.0
DA 280	NVSS J100146+284656	[ATI98] 095851+2910

References (430 between 1850 and 2024) (Total 430) 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 : 3C 234

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