Cyg X-2

Query : Cyg X-2
C.D.S. - SIMBAD4 rel 1.5.11 - 2017.10.18CEST13:14:42

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Basic data :
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  • V* V1341 Cyg -- Low Mass X-ray Binary
    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:
    X (2A,3A,...), gam (INTEGRAL1,INTREF), V* (V*,AAVSO), N*? (Ref), SB* (SBC9), LXB (Ref), N* (Ref), IR (2MASS)
    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) :
    21 44 41.15 +38 19 17.1 (Infrared) [ 60 60 90 ] B 2003yCat.2246....0C
    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) :
    21 44 41.15 +38 19 17.1 [ 60 60 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) :
    21 42 36.84 +38 05 27.2 [ 60 60 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) :
    087.3282 -11.3163 [ 60 60 90 ]
    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:
    A9III C 1998ApJ...493L..39C
    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])s" /> TDht CELLSPACING="2"> htt V*>2003+2"> G="2"> htt htt H,1M,>2003J2144.7 16 G="2"> htt NTER" /> <> G="2"> htt 2A>20032142 1 G="2"> htt 1M>20032142 0 G="2"> htt H,1M,>2003J2144.6 19 G="2"> htt 2U,3U,>2003X2142 0 NTER" /> <> G="2"> htt 3A>20032142 0 G="2"> htt G="2"> htt htt 2,1XRS,XSS>2003390 NTER" /> <> G="2"> htt 1H>20032142 0 G="2"> htt htt htt <> G="2"> htt H>20032143 G="2"> htt PBC>2003J2144.6 19 G="2"> htt <> G="2"> htt H>20032142 0 G="2"> htt 1,1H>2003J214429.0 1913 G="2"> htt 1RXS>200321426 0 /NT> NTER" /> <> G="2"> htt 200312" G="2"> htt htt > Annotations nbsp; tions" viz2.js"> TDht CE
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