IERS B1901+319

Basic data :
ICRF J190255.9+315941 -- 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 (2015Ap&SS,QSO,...), Bla (2016ApJS,[MML2015]), MIR (WISEA,WISE), AGN (2020MNRAS), G (LEDA), * (Gaia), 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) : 19 02 55.93889653 +31 59 41.7016439 (Radio) [ 0.0400725 0.0434 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) : 19 01 02.32136683 +31 55 13.9214000 [ 0.0400725 0.0434 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) : 063.02872237932 +11.75694126785 [ 0.0400725 0.0434 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 : 0.001 0.133 [0.071 0.074 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) 136561 [~] / z(emission) 0.635 [~] / cz 190368 [~]    (Opt) D 2016ApJ...818..113N Syntax of parallax is : 'value quality [error] bibcode' value : parallax value quality : flag of quality (A=best quality -> E=worst quality, {� } =unknown quality) [error] : mean error bibcode : bibcode of the parallax reference Parallaxes (mas): 0.0176 [0.0909] A 2018yCat.1345....0G 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): 0.0000115 0.0000055 5 (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 (5) : V 17.5 [~] E ~ G 17.4294 [0.0043] C 2018yCat.1345....0G J 13.618 [0.024] C 2003yCat.2246....0C H 13.042 [0.028] C 2003yCat.2246....0C K 12.799 [0.028] 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: 3C 395A, B See also Specfind radio flux densities.

ICRF J190255.9+315941	LEDA 2817714	TIC 41839419	[LBC2010] B1901+319
B2 1901+31	2MASS J19025610+3159439	TXS 1901+319	[MML2015] 5BZQ J1902+3159
B2.1 1901+31	2MASSI J1902561+315943	UT 1901+319	[P82] 1901+319
BWE 1901+3155	MITG J190256+3200	VLSSr J190255.8+315942	[VV2000] J190255.9+315942
3C 395	MITG J190254+3159	VLSS J1902.9+3159	[VV2003] J190255.9+315942
4C 31.52	MY 190102.8+315503.3	VSOP J1902+3159	[VV2006] J190255.9+315942
CLASS J190255.9322+315941.631	MY 190102.8+315931.1	WB 1901+3155	[VV2010] J190255.9+315942
CRATES J190256+315939	NRAO 592	WISEA J190256.04+315943.2	[VV96] J190255.9+315942
DA 470	NVSS J190255+315942	WISE J190256.04+315943.2	[VV98] J190255.9+315942
GB6 J1902+3159	QSO B1901+319	WMAP 34	Gaia DR2 2043550082305460480
GB6 B1901+3155	QSO B1901+3155	WMAP J1902+3153	Gaia DR3 2043550082305460480
87GB 190103.4+315508	QSO J1902+3159	WMAP J1902+3154	Gaia DR1 2043550078003834240
IERS B1901+319	RFC J1902+3159	WMAP J1903+3157
JVAS J1902+3159	RORF 1901+319	WN B1901.0+3155
JVAS B1901+319	TGSSADR J190255.9+315941	[HB93] 1901+319

References (271 between 1850 and 2024) (Total 271) 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 :

Data at NED - NASA/IPAC Extragalactic Database : IERS B1901+319

Link by name to the catalogue in VizieR :

Search by coordinates in Vizier (radius: 5 arcsec)

Annotations :
Annotations allow a user to add a note or report an error concerning the astronomical object and its data. It requires registration to post a note. See description .
Please, have a look at Best practices. The list of all annotations to SIMBAD objects can be found here .

Currently no annotations available

add an annotation to this object

report an error concerning the data of this object

Store this result in Votable, in Ascii, or in the CDS portal

To bookmark this query, right click on this link: simbad:IERS B1901+319 and select 'bookmark this link' or equivalent in the popup menu