NGC_4261

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Basic data :
NGC 4261 -- 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: Rad (ASB,3C,...), G (2015ApJS,EVCC,...), X (2E,RX,...), AGN ([VV2003c],[VV2006c],...), GiG ([CHM2007]), LIN (2012ApJ), smm (JCMTSE) 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 19 23.2160630 +05 49 29.700024 (Radio) [ 0.01 0.02 90 ] A 2017ApJS..233....3T 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 16 50.0106839 +06 06 08.760078 [ 0.01 0.02 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) : 281.8048847577 +67.3725601205 [ 0.01 0.02 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 : -0.00883 0.03145 [0.01879 0.02195 90] ~ 2017ApJS..233....3T 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) 2183 [66] / z(spectroscopic) 0.00731 [0.00022] / cz 2191.5 [66.0]    C 2009yCat.2294....0A 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-E/S0 C 2014A&A...569A.124V 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): 4.17 3.39 160 (Opt) D 2003A&A...412...45P 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 (10) : B 13.92 [~] D 2010A&A...518A..10V V 12.87 [~] D 2010A&A...518A..10V J 8.202 [0.019] C 2006AJ....131.1163S H 7.510 [0.021] C 2006AJ....131.1163S K 7.263 [0.028] C 2006AJ....131.1163S u (AB) 13.375 [0.003] C 2009yCat.2294....0A g (AB) 11.466 [0.002] C 2009yCat.2294....0A r (AB) 10.662 [0.001] C 2009yCat.2294....0A i (AB) 10.212 [0.001] C 2009yCat.2294....0A z (AB) 9.852 [0.002] C 2009yCat.2294....0A	SIMBAD with radius arcmin Interactive AladinLite view 2MASS DSS SDSSXMMIRACIRISGALEX VizieR photometry viewer    within radius 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!).

NGC 4261	GRA B1216+06	PKS 1216+061	WMAP J1219+0548
ASB 32	ICRF J121923.2+054929	PKS 1216+06	WMAP J1219+0549
3C 270.0	IERS B1216+061	PMN J1219+0549	2XMM J121923.2+054929
3C 270	JCMTSE J121923.3+054920	RGB J1219.4+0549	Z 42-13
4C 06.44	1Jy 1216+061	RX J1219.3+0549	Z 1216.8+0606
3CR 270	1Jy 1216+06	RX J1219.4+0549	[CHM2007] HDC 720 J121923.26+0549289
CTA 52	LEDA 39659	1RXS J121924.1+054935	[CHM2007] LDC 904 J121923.26+0549289
Cul 1216+061	2MASX J12192326+0549289	SDSS J121923.21+054929.7	[DGW65] 54
Cul 1216+06	MCG+01-31-052	SDSS J121923.22+054929.7	[FWB89] Galaxy 246
DA 319	MRC 1216+061	SIM 1216+06.0	[GW2008] CoNFIG 131
2E 2655	MSH 12+0-05	UGC 7360	[VV2003c] J121923.2+054929
2E 1216.8+0606	NEWPS5 J1219+0549	UZC J121923.2+054930	[VV2006c] J121923.2+054929
EVCC 342	NRAO 395	VCC 345	[VV2010c] J121923.2+054929
GB6 J1219+0549a	NVSS B121650+060612	WMAP 164	[ZEH2003] RX J1219.4+0549 1

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References (1132 between 1850 and 2021) (Total 1132) 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

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External archives :

Archive data at HEASARC - High-Energy Astrophysics Science Archive Research Center

Data at NED - NASA/IPAC Extragalactic Database : NGC_4261

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