V* V4387 Sgr

Query : V* V4387 Sgr
C.D.S. - SIMBAD4 rel 1.7 - 2021.03.03CET09:27:18

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


Basic data :
V* V4387 Sgr -- Variable Star of alpha2 CVn 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:
* (1971PW&SO,HD,...), ** (ADS,CCDM,...), IR (2MASS,SSTGLMC), UV (TD1,[SC96]), a2* (2003AstL), V* (V*)
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) :
18 15 30.7645714197 -18 39 41.654326703 (Optical) [ 0.0773 0.0800 90 ] A 2018yCat.1345....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) :
18 12 34.4437298235 -18 40 42.948822063 [ 0.0773 0.0800 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) :
012.3066749787891 -00.8177224083641 [ 0.0773 0.0800 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 :
0.843 -1.494 [0.148 0.115 90] A 2018yCat.1345....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) 2.00 [4.3] / z(~) 0.000007 [0.000014] / cz 2.00 [4.30]
   C 2006AstL...32..759G
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):
0.5123 [0.1097] A 2018yCat.1345....0G
Spectral type is made of 3 parts: %coding is composed of 4 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 %
  • a quality letter: A=best quality -> E=worst quality, {� } =unknown quality
  • bibcode : bibcode of the spectral type reference
Spectral type:
ApSi D 1988MSS...C04....0H
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 (9) :
U 6.02 [~] C 2002yCat.2237....0D
B 6.35 [~] C 2002yCat.2237....0D
V 6.15 [~] C 2002yCat.2237....0D
R 5.93 [~] C 2002yCat.2237....0D
G 5.9486 [0.0013] C 2018yCat.1345....0G
I 5.70 [~] C 2002yCat.2237....0D
J 5.418 [0.023] C 2003yCat.2246....0C
H 5.291 [0.018] C 2003yCat.2246....0C
K 5.236 [0.018] C 2003yCat.2246....0C
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The link on the acronym of the identifiers give access to the information for this acronym in the dictionary of nomenclature.
Identifiers (36) :
An access of full data is available using the icon Vizier near the identifier of the catalogue

HD 167356 GSC 06268-00893 PPM 234244 uvby98 100167356 A
ADS 11196 A HIC 89470 Renson 47035 uvby98 100167356
ALS 4831 HIP 89470 SAO 161227 V* V4387 Sgr
BD-18 4864 HR 6825 SKY# 33252 WDS J18155-1840A
CCDM J18155-1840A IDS 18096-1841 A SSTGLMC G012.3066-00.8177 WEB 15225
CSI-18 4864 1 LS 4831 TD1 21983 YZ 108 7579
GC 24900 2MASS J18153076-1839416 TIC 243856698 [SC95] M 466
GCRV 10706 MCW 637 TYC 6268-893-1 [SC96] Mis 1194
GEN# +1.00167356J PMC 90-93 6255 UCAC4 357-129070 Gaia DR2 4094860616496202624

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References (62 between 1850 and 2021) (Total 62)
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


velocities : 6    ROT : 2    PM : 4    PLX : 3    MK : 10   

   


External archives :

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

Link by name to the catalogue in VizieR :

HD 167356 ALS 4831 BD-18 4864 CCDM J18155-1840A GSC 06268-00893
HIC 89470 HIP 89470 HR 6825 LS 4831 2MASS J18153076-1839416
PPM 234244 SAO 161227 SSTGLMC G012.3066-00.8177 TD1 21983 TYC 6268-893-1
UCAC4 357-129070 uvby98 100167356 A uvby98 100167356 V* V4387 Sgr WDS J18155-1840A
Gaia DR2 4094860616496202624

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2021.03.03-09:27:18

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