3C 390.3

Basic data :
ICRF J184208.9+794617 -- 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 (2020A&A,ICRF,...), X (2012ApJS,1AXG,...), AGN (2012ApJ,[HB91],...), G (2012A&A,CGPG,...), QSO (2016A&A,QSO,...), Sy1 (2013ApJS), MIR (AKARI,WISEA,...), Bla ([DGT2001],[IN88]), IR (IRAS,[DML87]), * (Gaia), gam (INTREF), 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) : 18 42 08.9904975672 +79 46 17.127835104 (Optical) [ 0.0250 0.0248 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) : 18 45 37.6820309424 +79 43 06.358134942 [ 0.0250 0.0248 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) : 111.4379270961159 +27.0739459766819 [ 0.0250 0.0248 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 : -0.112 0.032 [0.037 0.031 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) 16220 [150] / z(emission) 0.05564870 [0.0005] / cz 16683.0606 [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: S0: 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): 0.260 0.218 30 (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 (6) : B 16.06 [~] D 2010A&A...518A..10V V 15.38 [~] D 2010A&A...518A..10V G 15.307582 [0.014367] C 2020yCat.1350....0G J 12.911 [0.039] C 2006AJ....131.1163S H 12.166 [0.041] C 2006AJ....131.1163S K 11.539 [0.052] C 2006AJ....131.1163S	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!).

ICRF J184208.9+794617	1Jy 1845+79	SWIFT J1842.0+7945	ZW VII 838
AKARI-IRC-V1 J1842090+794616	KNOWS J184218+794540	SWIFT J1842.4+7946	[BAG2012] 280.6068+79.7714
1AXG J184202+7946	LEDA 62274	SWIFT J1842.3+7946	[BDW2002] q1845+7943
3C 390.3	2MASS J18420900+7946171	TGSSADR J184212.2+794612	[DGT2001] B1845+797
4C 79.18	2MASX J18420899+7946170	TIC 288673066	[DML87] 710
6C 184542+794243	2MAXI J1842+797	2U 1828+81	[HB91] 1845+797
8C 1845+797	MAXI J1839+798	3U 1825+81	[IN88] 1845+797
CGPG 1845.5+7943	NRAO 582	4U 1847+78	[KRL2007b] 334
3CR 390.3	NVSS J184151+794727	VSOP J1842+7946	[VV2000c] J184209.0+794617
2E 4136	NVSS J184226+794517	WB 1845+7943	[VV2003c] J184209.0+794617
2E 1845.6+7943	PBC J1842.0+7946	WISEA J184209.00+794617.1	[VV2006c] J184209.0+794617
1ES 1845+79.7	QSO J1842+7946	WISE J184209.01+794617.1	[VV2010c] J184209.0+794617
1H 1858+797	QSO B1845+7943	WMAP 73	[VV98c] J184209.0+794617
H 1843+797	QSO B1845+797	WMAP J1840+7946	[WTW94] 1845+797
IERS B1845+797	QSO B1845+796	WMAP J1840+7947	Gaia DR2 2294218358105826432
INTREF 930	QSO B1845+797E	WMAP J1842+7945	Gaia DR3 2294218358105826432
IRAS F18456+7943	RORF 1845+797	WN B1845.6+7943	Gaia DR1 2294218353810467072
IRAS 18456+7943	1RXS J184209.5+794613	2XMM J184208.9+794617
1Jy 1845+797	S5 1845+797	XSS J18408+7947

References (1316 between 1850 and 2024) (Total 1316) 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 390.3

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