Hydra A

Basic data :
NAME Hya A -- 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 (2020A&A,3C,...), G (2011MNRAS,6dFGS,...), AGN ([HB91],[VV2000c],...), X (2E,1ES,...), rG ([OLK95],[OWB92]), BiC (2008MNRAS), QSO (QSO), GiC (NFP), * (Gaia), smm (JCMTSE), cm (AT20G), UV (GALEX) 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) : 09 18 05.66848602 -12 05 43.8060823 (Radio) [ 0.1365 0.2937 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) : 09 15 41.19606825 -11 53 04.8445778 [ 0.1365 0.2937 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) : 242.92555601801 +25.09288182245 [ 0.1365 0.2937 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) 16001 [24] / z(~) 0.05488 [0.00008] / cz 16452.0 [24.0]    (Opt) C 2004AJ....128.1558S 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): 0.517 0.393 125 (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 14.38 [~] D 2008MNRAS.391.1009L V 14.8 [~] E ~ G 22.016174 [0.077181] C 2020yCat.1350....0G J 11.836 [0.047] C 2006AJ....131.1163S H 11.142 [0.052] C 2006AJ....131.1163S K 10.900 [0.063] 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!).
Some important notes on this object about identifications and objects associations. notes: See also Specfind radio flux densities.

NAME Hya A	JCMTSE J091805.6-120537	PKS J0918-1205	[DGW65] 46
Anon 0915-11	1Jy 0915-118	PKS 0915-118	[HB91] 0915-118
AT20G J091805-120532	1Jy 0915-11	PMN J0918-1205	[HIM85] 3C 218 A
3C 218	LEDA 26269	QSO B0915-11	[HMS56] Anon 0915.7-1153
CTA 47	LHE 248	RX J0918.1-1205	[LO95] 0915-118
Cul 0915-118	2MASX J09180565-1205439	1RXS J091807.6-120543	[LPS2014] 139.5238-12.0955
Cul 0915-11	MCG-02-24-007	SPASS J091802-120614	[OLK95] 0915-118
DB 65	MRC 0915-118	TGSSADR J091805.9-120530	[OWB92] ACO 780
6dFGS gJ091805.7-120544	MSH 09-1-04	TXS 0915-118	[OWH82] 091539.7-115523
2E 2117	NAME Hydra A	VLSS J0918.0-1205	[VV2000c] J091805.7-120543
2E 0915.6-1152	NFP J091805.7-120544	WINGS J091805.68-120543.2	[VV2003c] J091805.7-120543
1ES 0915-11.8	NRAO 319	WMAP 143	[VV2006c] J091805.7-120543
GALEX J091805.5-120544	NVSS J091805-120541	WMAP J0918-1203	[VV2010c] J091805.7-120543
GRA B0915-11	OHIO K -126	WMAP J0917-1208	[VV98c] J091805.7-120543
ICRF J091805.6-120543	OHIO K 126	2XMM J091805.8-120540	Gaia DR3 5738931044604174592
IERS B0915-118	PKS 0915-11	XSS J09178-1208

References (1011 between 1850 and 2024) (Total 1011) 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 : Hydra A

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