V* V2500 Oph

Query : V* V2500 Oph C.D.S. - SIMBAD4 rel 1.5.8 - 2016.09.30CEST07:00:01

Available data : Basic data  •  Identifiers  •  Plot & images  •  Bibliography  •  Measurements  •  External archives  •  Notes  •  Annotations


Basic data :
NAME Barnard's star -- Variable of BY Dra type
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:
BY* (), * (AC2000,ASCC,...), PM* (Ci,G,...), V* (V*,CSV,...), IR (IRAS,2MASS), X (1E), ** (CCDM)
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] : coordinates error major axis, minor axis (in mas at epoch defined in your output options),
    position angle (in degrees North to East of the specified coordinate frame)
  • 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) :
17 57 48.49803 +04 41 36.2072 (Optical) [ 15.10 10.72 90 ] A 2007A&A...474..653V
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] : coordinates error major axis, minor axis (in mas at epoch defined in your output options),
    position angle (in degrees North to East of the specified coordinate frame)
  • 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
FK5 coord. (ep=J2000 eq=2000) :
17 57 48.498 +04 41 36.21 [ 15.10 10.72 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] : coordinates error major axis, minor axis (in mas at epoch defined in your output options),
    position angle (in degrees North to East of the specified coordinate frame)
  • 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) :
17 55 22.70 +04 33 14.6 [ 86.67 62.84 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] : coordinates error major axis, minor axis (in mas at epoch defined in your output options),
    position angle (in degrees North to East of the specified coordinate frame)
  • 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) :
031.0087 +14.0627 [ 15.10 10.72 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 :
-798.58 10328.12 [1.72 1.22 0] A 2007A&A...474..653V
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) -110.51 [0.1] / z(~) -0.000369 [0.000000] / cz -110.49 [0.10]
   A 2002ApJS..141..503N
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):
548.31 [1.51] A 2007A&A...474..653V
Spectral type is made of 3 parts:
  • the spectral type, which is made of a temperature class, eventually a luminosity class (roman number) and/or spectral peculiarities;
  • a quality letter: A=best quality->E=worst quality, ~ =unknown quality
  • bibcode : bibcode of the spectral type reference
Spectral type:
M4V B 1991ApJS...77..417K
Syntax of fluxes (or magnitudes) is : "filter-name flux-value [error] quality MultVarFlags bibcode"
  • filter-name : U, B, V, R, I, J, H, K, u, g, r, i, z
  • 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 (11) :
U 12.497 [~] C 2010MNRAS.403.1949K
B 11.24 [~] C 2010MNRAS.403.1949K
V 9.511 [~] C 2010MNRAS.403.1949K
R 8.298 [~] C 2010MNRAS.403.1949K
I 6.741 [~] C 2010MNRAS.403.1949K
J 5.244 [0.020] C 2003yCat.2246....0C
H 4.83 [0.03] C 2003yCat.2246....0C
K 4.524 [0.020] C 2003yCat.2246....0C
g 10.572 [0.07] D 2012yCat.1322....0Z
r 9.288 [0.02] D 2012yCat.1322....0Z
i 7.756 [0.04] D 2012yCat.1322....0Z
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within radius 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:

  • not BD+04 3561
  • The star with the highest known proper motion.


The link on the acronym of the identifiers give access to the information for this acronym in the dictionary of nomenclature.
Identifiers (44) :

V* V2500 Oph G 140-24 LTT 15309 StKM 2-1355
AC2000 146626 GJ 699 2MASS J17574849+0441405 TYC 425-2502-1
ASCC 1153178 GSC 00425-00184 MCC 799 UBV 15269
BD+04 3561a GSC 00425-02502 NAME Barnard Star UCAC2 33428712
CCDM J17578+0441A HIC 87937 NAME Barnard's star UCAC4 474-068224
Ci 20 1069 HIP 87937 NLTT 45718 USNO-B1.0 0946-00315199
CSI+04-17554 IRAS 17553+0438 NSV 9910 USNO 347
CSV 7737 JP11 18 8pc 549.01 USNO 876
1E 1755.3+0438 LFT 1385 PLX 4098 VVO 6
GAT 12 LHS 57 PLX 4098.00 Zkh 269
GCRV 10392 LSPM J1757+0441 PM J17578+0441N [RHG95] 2849

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References (525 between 1850 and 2016)
Simbad bibliographic survey began in 1950 for stars (at least bright stars) and in 1983 for all other objects (outside the solar system).
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Measurements (14 types) :


distance : 1    Fe_H : 4    GJ : 2    IRAS : 1    ISO : 9    JP11 : 6    MK : 32    oRV : 6    PLX : 14    PM : 7    pos : 1    posa : 1   
UBV : 17    velocities : 7   

   


External archives :

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

Data at NED - NASA/IPAC Extragalactic Database : V* V2500 Oph

Link by name to the catalogue in VizieR :

V* V2500 Oph AC2000 146626 BD+04 3561a CCDM J17578+0441A G 140-24
GJ 699 GSC 00425-00184 GSC 00425-02502 HIC 87937 HIP 87937
IRAS 17553+0438 LHS 57 LSPM J1757+0441 2MASS J17574849+0441405 NLTT 45718
NSV 9910 TYC 425-2502-1 UCAC2 33428712 UCAC4 474-068224 USNO-B1.0 0946-00315199

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Annotations :
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The list of all annotations to SIMBAD objects can be found here .

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2016.09.30-07:00:01

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