IERS B2004-447

Basic data :
ICRF J200755.1-443444 -- 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: Sy1 (), Rad (2014ApJS,ICRF,...), AGN (2011ApJ,[VV2000c],...), Bla (2009A&A,[MGL2009],...), QSO (2011MNRAS,QSO), gam (1FGL,2FGL,...), X (2009A&A,1RXS,...), cm (AT20G,ATPMN), MIR (WISEA,WISE), * (Gaia), 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) : 20 07 55.1842447944 -44 34 44.274118260 (Optical) [ 0.1838 0.1862 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) : 20 04 25.1375268008 -44 43 28.659126757 [ 0.1838 0.1862 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) : 355.3309855187163 -31.8499393968161 [ 0.1838 0.1862 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 : -0.016 -0.212 [0.221 0.210 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) 63512 [~] / z(~) 0.24 [~] / cz 71950 [~]    D 2009A&A...495..691M 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 (7) : B 19.3 [~] E ~ V 19.3 [~] E ~ R 18 [~] E 2009A&A...495..691M G 18.842600 [0.014816] C 2020yCat.1350....0G J 16.197 [0.081] C 2003yCat.2246....0C H 15.293 [0.073] C 2003yCat.2246....0C K 14.336 [0.069] C 2003yCat.2246....0C	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.

ICRF J200755.1-443444	IVS B2004-447	TGSSADR J200755.1-443444	[VV2000c] J200755.1-443443
AT20G J200755-443444	2MASS J20075517-4434442	TIC 129040857	[VV2003c] J200755.1-443443
ATPMN J200755.1-443444	MRC 2004-447	VCS2 J2007-4434	[VV2006c] J200755.1-443443
CRATES J200755-443449	PKS 2004-447	WISEA J200755.20-443444.2	[VV2010c] J200755.1-443443
1FGL J2007.9-4430	PKS J2007-4434	WISE J200755.18-443444.1	[VV98c] J200755.1-443443
2FGL J2007.9-4430	PMN J2007-4434	WISE J200755.20-443444.2	Gaia DR3 6673666213413709952
3FGL J2007.8-4429	QSO B2004-447	2XMM J200755.2-443444	Gaia DR1 6673666213413709952
4FGL J2007.9-4432	1RXS J200756.2-443450	[MGL2009] BZQ J2007-4434	Gaia DR2 6673666213413709952
GLEAM J200755-443444	SPASS J200756-443415	[MML2015] 5BZQ J2007-4434
IERS B2004-447	SUMSS J200755-443444	[P82] 2004-447

References (169 between 1850 and 2024) (Total 169) 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 : IERS B2004-447

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