IERS B1637+574

Basic data :
ICRF J163813.4+572023 -- 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 (2010AJ,ICRF,...), QSO (2008ApJS,QSO,...), Bla (2009A&A,[MGL2009],...), X (2009A&A,RX,...), * (SBSS,Gaia), gam (3FGL,4FGL), smm (JCMTSE,JCMTSF), MIR (WISEA,WISE), AGN (CGRaBS), Bz? ([SRM2005]), Q? (2021MNRAS), AG? (2022ApJS), NIR (2MASS), IR (2MASSI) 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) : 16 38 13.45629995 +57 20 23.9789828 (Radio) [ 0.0319744 0.0331 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) : 16 37 17.44254571 +57 26 15.8240102 [ 0.0319744 0.0331 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) : 086.63894461180 +40.36076172029 [ 0.0319744 0.0331 0 ] 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 : 0.012 -0.067 [0.046 0.051 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) 151565 [~] / z(emission) 0.745 [~] / cz 223345 [~]    (Opt) D 2016ApJ...818..113N 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): 0.0000122 0.0000058 32 (Rad) D 2010AJ....139.1713C 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) : V 16.90 [~] D 2010ApJ...710..764K R 16.94 [~] D 2008ApJS..175...97H G 16.348867 [0.004635] C 2020yCat.1350....0G J 14.909 [0.041] C 2003yCat.2246....0C H 14.338 [0.044] C 2003yCat.2246....0C K 13.540 [0.040] 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 J163813.4+572023	JCMTSF J163813.3+572024	RFC J1638+5720	WN B1637.2+5726
BWE 1637+5726	JVAS J1638+573	RGB J1638.2+5720	[BDW2002] q1637+5726
6C 163718+572618	JVAS B1637+574	RGB J1638+573	[HB93] 1637+574
7C 163717.30+572619.00	JVAS J1638+5720	RORF 1637+574	[MGL2009] BZQ J1638+5720
7C 1637+5726	1Jy 1637+574	RX J1638.2+5720	[MML2015] 5BZQ J1638+5720
CGRaBS J1638+5720	1Jy 1637+57	1RXS J163813.1+572028	[P82] 1637+574
CJ1 1637+574	MASIV J1638+5720	S4 1637+574	[PGB2011] J1638+5720
CJF B1637+574	2MASS J16381345+5720241	S4 1637+57	[SRM2005] J163813.45+572023.9
CLASS J163813.4578+572023.986	2MASSI J1638134+572024	SBSS 1637+574	[VV2000] J163813.6+572024
CRATES J163813+572029	MY 163717.9+572621.5	TIC 199614669	[VV2003] J163813.6+572024
3FGL J1637.9+5719	MY 163717.9+572029.7	TXS 1637+574	[VV2006] J163813.6+572024
4FGL J1638.1+5721	NEWPS5 J1638+5720	VIPS J16382+5720	[VV2010] J163813.6+572024
FIRST J163813.4+572024	NVSS J163813+572024	VSOP J1638+5720	[VV96] J163813.3+572024
GB6 B1637+5726	OHIO S 562	WB 1637+5726	[VV98] J163813.6+572024
GB6 J1638+5720	PCCS1 030 G086.64+40.35	WISEA J163813.46+572024.0	[WCO2009] J163826+571839
87GB 163716.8+572621	QSO J1638+5720	WISE J163813.46+572024.0	[ZEH2003] RX J1638.2+5720 2
IERS B1637+574	QSO B1637+575	WMAP 56	Gaia DR3 1430454702068334720
IVS B1637+574	QSO B1637+5726	WMAP J1638+5722	Gaia DR1 1430454697773230464
JCMTSE J163813.3+572024	QSO B1637+574	WMAP J1638+5719	Gaia DR2 1430454702068334720

References (359 between 1850 and 2024) (Total 359) 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 B1637+574

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