IERS B1902+556

Query : IERS B1902+556

Basic data :
ICRF J190311.6+554038 -- BL Lac
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 (ICRF,BWE,...), BLL (2010ApJ,[VV2000b],...), gam (1FGL,2FGL,...), Bla (2009A&A,[MGL2009],...), X (2009A&A,RX,...), IR (2MASS,WISEA,...), QSO (2016A&A), AGN (2011ApJ), * (Gaia)
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 03 11.6077129056 +55 40 38.450387568 (Optical) [ 0.0370 0.0355 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) :
19 02 11.9050057549 +55 36 07.703365866 [ 0.0370 0.0355 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) :
085.9660895281742 +20.5397433071068 [ 0.0370 0.0355 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 :
-0.158 -0.083 [0.050 0.040 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) 128306 [~] / z(~) 0.58 [~] / cz 173880 [~]
   D 2016MNRAS.462.1775B
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):
0.0250 [0.0478] A 2018yCat.1345....0G
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 18.1 [~] E ~
R 16.4 [~] E 2009A&A...495..691M
G 16.220568 [0.009053] C 2020yCat.1350....0G
J 14.815 [0.040] C 2003yCat.2246....0C
H 13.996 [0.044] C 2003yCat.2246....0C
K 13.244 [0.035] 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 Simbad points in this preview
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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!).
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Some important notes on this object about identifications and objects associations.
notes:


The link on the acronym of the identifiers give access to the information for this acronym in the dictionary of nomenclature.
Identifiers (44) :
An access of full data is available using the icon Vizier near the identifier of the catalogue

ICRF J190311.6+554038 GB6 B1902+5536 RGB J1903.2+5540 9Y-MST J1903+5540
BWE 1902+5536 87GB 190211.7+553611 RX J1903.1+5540 [BSF97] J190311.61+554038.5
CLASS J190311.6083+554038.442 IERS B1902+556 1RXS J190313.1+554035 [MGL2009] BZB J1903+5540
CRATES J190311+554044 IVS B1902+556 TIC 377163792 [MML2015] 5BZB J1903+5540
1FGL J1903.0+5539 JVAS J1903+556 TXS 1902+556 [VV2000b] J190311.6+554039
2FGL J1903.3+5539 JVAS B1902+556 VCS1 J1903+5540 [VV2003b] J190311.6+554039
3FGL J1903.2+5541 2MASS J19031160+5540384 VCS6 J1903+5540 [VV2006b] J190311.6+554039
4FGL J1903.2+5540 MY 190213.5+553520.0 WB 1902+5536 [VV2010b] J190311.6+554039
1FHL J1903.4+5541 MY 190213.5+553950.9 WISEA J190311.60+554038.5 Gaia EDR3 2140895000667560064
2FHL J1903.2+5540 NVSS J190311+554039 WISE J190311.60+554038.5 Gaia DR1 2140894996369992320
3FHL J1903.2+5540 RGB J1903+556 WN B1902.1+5536 Gaia DR2 2140895000667560064

References (80 between 1850 and 2022) (Total 80)
Simbad bibliographic survey began in 1850 for stars (at least bright stars) and in 1983 for all other objects (outside the solar system).
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                Reference summaries :

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Collections of Measurements


PLX : 1    PM : 2   

   


External archives :

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

Data at NED - NASA/IPAC Extragalactic Database : IERS B1902+556

Link by name to the catalogue in VizieR :

BWE 1902+5536 IERS B1902+556 2MASS J19031160+5540384 NVSS J190311+554039 1RXS J190313.1+554035
WISEA J190311.60+554038.5 WISE J190311.60+554038.5 WN B1902.1+5536 Gaia EDR3 2140895000667560064 Gaia DR1 2140894996369992320
Gaia DR2 2140895000667560064

Search by coordinates in Vizier (radius: 5 arcsec)


Annotations :
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Please, have a look at Best practices. The list of all annotations to SIMBAD objects can be found here .

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2022.06.29-19:09:31

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