IERS B1557+565

Query : IERS B1557+565

Basic data :
7C 1557+5633 -- 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 (2019ApJS,7C,...), BLL (2010ApJ,[VV2000b],...), gam (1FGL,2FGL,...), IR (2MASS,WISEA,...), Bla ([MGL2009],[MML2015]), X (2009A&A,1RXS), QSO (2016A&A), AGN (2011ApJ), BL? (2011NewA), * (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) :
15 58 48.2889478488 +56 25 14.121578928 (Optical) [ 0.0568 0.0647 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) :
15 57 41.5053303804 +56 33 41.688232156 [ 0.0568 0.0647 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) :
087.5904760287949 +45.7739081036512 [ 0.0568 0.0647 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 :
0.004 -0.154 [0.073 0.088 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) 76898 [~] / z(spectroscopic) 0.300 [~] / cz 89938 [~]
   D 2011NewA...16..503M
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 18.08 [~] D 2010A&A...518A..10V
V 17.54 [~] D 2010A&A...518A..10V
R 17.2 [~] E 2009A&A...495..691M
G 17.428566 [0.011947] C 2020yCat.1350....0G
J 14.904 [0.043] C 2003yCat.2246....0C
H 13.983 [0.044] C 2003yCat.2246....0C
K 13.237 [0.041] 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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sedIcon
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 (47) :
An access of full data is available using the icon Vizier near the identifier of the catalogue

7C 1557+5633 FIRST J155848.3+562514 MY 155740.1+562513.0 9Y-MST J1558+5625
BWE 1557+5634 GB6 J1558+5625 NVSS J155848+562514 [HMI96] 1557+5633
6C 155742+563358 GB6 B1557+5633 1RXS J155846.4+562535 [MGL2009] BZB J1558+5625
7C 155741.70+563343.00 87GB 155742.8+563401 TIC 161824117 [MML2015] 5BZB J1558+5625
8C 1557+565 ICRF J155848.2+562514 TXS 1557+565 [VV2000b] J155848.5+562514
CLASS J155848.2901+562514.108 IERS B1557+565 VCS3 J1558+5625 [VV2003b] J155848.5+562514
CRATES J155848+562524 IVS B1557+565 VIPS J15588+5625 [VV2006b] J155848.5+562514
1FGL J1558.9+5627 JVAS B1557+565 VIPS 926 [VV2010b] J155848.3+562514
2FGL J1559.0+5627 JVAS J1558+564 WB 1557+5634 Gaia EDR3 1621714848503992832
3FGL J1558.9+5625 JVAS J1558+5625 WISEA J155848.29+562514.2 Gaia DR1 1621714848503992832
4FGL J1558.8+5625 2MASS J15584829+5625143 WISE J155848.30+562514.1 Gaia DR2 1621714848503992832
3FHL J1558.8+5626 MY 155740.1+563340.6 WISE J155848.29+562514.2

References (76 between 1850 and 2022) (Total 76)
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


PM : 2   

   


External archives :

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

Data at NED - NASA/IPAC Extragalactic Database : IERS B1557+565

Link by name to the catalogue in VizieR :

BWE 1557+5634 FIRST J155848.3+562514 IERS B1557+565 2MASS J15584829+5625143 NVSS J155848+562514
1RXS J155846.4+562535 WISEA J155848.29+562514.2 WISE J155848.30+562514.1 WISE J155848.29+562514.2 Gaia EDR3 1621714848503992832
Gaia DR1 1621714848503992832 Gaia DR2 1621714848503992832

Search by coordinates in Vizier (radius: 5 arcsec)


Annotations :
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2022.06.25-00:49:22

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