Mrk 766

Basic data :
NGC 4253 -- 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: X (1AXG,1E,...), G (2015ApJS,CASG,...), AGN (2016AJ,[HB91],...), Rad (FIRST,NVSS,...), IR (IRAS,PSCz,...), Sy1 (2012ApJ), QSO (QSO,[WTW94]), gam (IGR,INTREF), Q? (FBQS), GiC (CAIRNS), GiG ([CHM2007]), AG? (2020MNRAS), * (Gaia), Opt (SDSS), var (2021Sci) 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) : 12 18 26.5163572920 +29 48 46.531535472 (Optical) [ 0.0733 0.0657 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) : 12 15 55.6454878228 +30 05 25.782046426 [ 0.0733 0.0657 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) : 190.6804874881387 +82.2701143030585 [ 0.0733 0.0657 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 : -0.355 -0.157 [0.093 0.079 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) 3850 [150] / z(emission) 0.01292423 [0.0005] / cz 3874.5867 [150]    (Opt) C 2022ApJS..261....2K 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): 0.0576 [0.0928] A 2020yCat.1350....0G 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: 1 D 2005ApJS..160..149S 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): 0.710 0.596 75 (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 14.34 [~] D 2010A&A...518A..10V V 13.57 [~] D 2010A&A...518A..10V G 15.072271 [0.008928] C 2020yCat.1350....0G J 11.101 [0.021] C 2006AJ....131.1163S H 10.379 [0.027] C 2006AJ....131.1163S K 9.839 [0.022] C 2006AJ....131.1163S u (AB) 14.898 [0.004] B 2011yCat.2306....0A g (AB) 13.551 [0.002] B 2011yCat.2306....0A r (AB) 12.934 [0.002] B 2011yCat.2306....0A i (AB) 12.668 [0.002] B 2011yCat.2306....0A z (AB) 12.380 [0.002] B 2011yCat.2306....0A	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.

NGC 4253	IRAS 12159+3005	SWIFT J1218.5+2952	[FS2003] 0629
1AXG J121827+2948	KUG 1215+300	SWIFT J1218.3+2950	[HB91] 1215+300
CAIRNS J121826.52+294846.4	LEDA 39525	TGSSADR J121826.5+294846	[KRL2007b] 110
CASG 168	2MASX J12182648+2948461	UGC 7344	[KVC2005] 7
1E 1215.9+3005	MCG+05-29-051	UVQS J121826.51+294846.5	[VV2000c] J121826.7+294847
2E 2648	Mrk 766	UZC J121826.5+294847	[VV2003c] J121826.5+294847
2E 1215.9+3005	NVSS J121826+294847	WN B1215.9+3005	[VV2006c] J121826.5+294847
ECO 3494	PBC J1218.4+2949	2XMM J121826.4+294846	[VV2010c] J121826.5+294847
1ES 1215+30.0	PSCz Q12159+3005	XMMSL1 J121826.6+294846	[VV98c] J121826.7+294847
EXO 1215.9+3004	QSO B1215+300	Z 158-61	[WTW94] 1215+300
FBQS J1218+2948	RBS 1095	Z 1215.9+3005	[ZEH2003] RX J1218.4+2948 1
FIRST J121826.5+294846	1RXP J121826.4+294847	[ATZ98] D101	Gaia DR2 4013484730082856576
IGR J12185+2948	RX J1218.4+2948	[CHM2007] LDC 875 J121826.48+2948461	Gaia DR3 4013484730082856576
INTREF 483	1RXS J121827.0+294853	[DC78] UGC 7344
IRAS F12159+3005	SDSS J121826.51+294846.4	[DML87] 292

References (1040 between 1850 and 2024) (Total 1040) 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 : Mrk 766

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