NGC 4278

Basic data :
NGC 4278 -- LINER-type Active Galaxy Nucleus 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: LIN (), Rad (2016A&A,B2,...), G (2015ApJS,CASG,...), X (1RXP,RX,...), AGN ([VV2000c],[VV2003c],...), GiG ([CHM2007],[TT2002]), smm (JCMTSE,JCMTSF), IR (IRAS,[DML87]), EmG (KISSR), GiC (CAIRNS), gam (INTREF), NIR (2MASS), 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) : 12 20 06.82538739 +29 16 50.7134758 (Radio) [ 0.336115 0.3979 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) : 12 17 36.16564926 +29 33 29.3838266 [ 0.336115 0.3979 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) : 193.78236974321 +82.77274433962 [ 0.336115 0.3979 0 ] 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) 617 [~] / z(emission) 0.002060 [~] / cz 617.64 [~]    (Rad) D 2018ApJ...861...49H 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 C 2015ApJS..217...27A 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): 2.107 1.896 35 (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) : U 11.54 [0.13] D 2007ApJS..173..185G B 11.09 [0.13] D 2007ApJS..173..185G V 10.16 [0.13] D 2007ApJS..173..185G J 8.085 [0.007] C 2006AJ....131.1163S H 7.415 [0.009] C 2006AJ....131.1163S K 7.184 [0.011] C 2006AJ....131.1163S u (AB) 13.377 [0.003] C 2009ApJS..182..543A g (AB) 11.515 [0.002] C 2009ApJS..182..543A r (AB) 10.704 [0.001] C 2009ApJS..182..543A i (AB) 10.298 [0.001] C 2009ApJS..182..543A z (AB) 9.918 [0.002] 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 GALEX UV data in GALEX data See also Specfind radio flux densities.

NGC 4278	JCMTSF J122006.5+291649	RX J1220.1+2916	[CHM2007] LDC 867 J122006.79+2916502
B2 1217+29	JVAS B1217+295	RX J122006.2+291643	[CRJ2004] J1220.1+2916
B2.1 1217+29	JVAS J1220+2916	1RXS J122006.2+291643	[DC78] UGC 7386
B2.2 1217+29	KISS F1220-3863	SDSS J122006.82+291650.6	[DML87] 655
BWE 1217+2933	KISSR 29	TIC 328862287	[FWB89] Galaxy 247
7C 121736.50+293332.00	LEDA 39764	TXS 1217+295	[KRN93] 150
CAIRNS J122006.82+291650.7	2MASS J12200681+2916505	UGC 7386	[LB2005] NGC 4278 X1
CASG 170	2MASX J12200679+2916502	UZC J122006.8+291651	[M98c] 121736.5+293326
FIRST J122006.8+291650	2MASX J12200682+2916498	VIPS J12201+2916	[SMM2006b] J122006.82+291650.7
GB6 B1217+2933	MCG+05-29-062	WB 1217+2933	[TT2002] Coma I 2
87GB 121735.6+293357	MITG J122007+2916	WN B1217.6+2933	[VV2000c] J122006.9+291651
ICRF J122006.8+291650	NVSS J122006+291650	2XMM J122006.8+291651	[VV2003c] J122006.9+291651
IERS B1217+295	RGB J1220.1+2916	Z 158-77	[VV2006c] J122006.9+291651
INTREF 487	RGB J1220+292	Z 1217.6+2933	[VV2010c] J122006.9+291651
IRAS F12176+2933	1RXP J122007.2+291646	[ATZ98] D106	[VV98c] J122006.9+291651
IRAS 12175+2933	RX J122006+29168	[CAB95] IRAS F12176+2933	[WTK2001] J122006.76+291649.8
JCMTSE J122006.5+291649	RX J1220.0+2916	[CHM2007] HDC 706 J122006.79+2916502	EQ 1217+295

References (924 between 1850 and 2023) (Total 924) 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 : NGC 4278

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