V* V993 Tau

Query : V* V993 Tau
C.D.S. - SIMBAD4 rel 1.7 - 2019.12.11CET04:19:24

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


Basic data :
V* V993 Tau -- 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* (), * (Ref,AG,...), UV (CEL,2EUVE,...), *iC (Cl*,Cl), V* (V*,AAVSO), X (2E,1RXS), PM* (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] : 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) :
04 27 35.8913866973 +15 35 21.092605003 (Optical) [ 0.0547 0.0243 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) :
04 24 44.7488696603 +15 28 43.348450042 [ 0.0547 0.0243 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) :
180.4113676998377 -22.3865039530591 [ 0.0547 0.0243 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 :
104.992 -24.069 [0.113 0.066 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) 39.244 [0.0026] / z(spectroscopic) 0.000131 [0.000000] / cz 39.25 [0.00]
   (Opt) A 2018A&A...616A...7S
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):
20.9248 [0.0645] 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 (11) :
B 7.949 [~] C 2006AJ....132..111J
V 7.404 [0.005] C 2006AJ....132..111J
R 7.102 [~] C 2006AJ....132..111J
I 6.805 [~] C 2006AJ....132..111J
G 7.2738 [0.0002] C 2018yCat.1345....0G
J 6.375 [0.018] C 2003yCat.2246....0C
H 6.174 [0.026] C 2003yCat.2246....0C
K 6.141 [0.024] C 2003yCat.2246....0C
g 9.58 [0.09] D 2012yCat.1322....0Z
r 8.70 [0.03] D 2012yCat.1322....0Z
i 7.67 [0.11] 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!).

Hierarchy : number of linked objects
whatever the membership probability is (see description here ) :

: 1 : 993 Display criteria :

The link on the acronym of the identifiers give access to the information for this acronym in the dictionary of nomenclature.
Identifiers (38) :
An access of full data is available using the icon Vizier near the identifier of the catalogue

V* V993 Tau 2EUVE J0427+15.5 2MASS J04273587+1535211 uvby98 520251446
AG+15 366 EUVE J0427+15.5 PPM 119912 uvby98 520250065
BD+15 627 GCRV 2593 ROT 3867 WEB 3993
CEL 403 GEN# +5.20250065 1RXS J042736.0+153502 YZ 15 1184
Cl* Melotte 25 S 97 GSC 01265-01048 SAO 93944 [RSP2011] 340
Cl* Melotte 25 VA 446 HD 28205 SKY# 6890 AAVSO 0421+15
Cl* Melotte 25 HAN 415 HIC 20815 TYC 1265-1048-1 Gaia DR1 3312709374919349248
Cl Melotte 25 65 HIP 20815 UBV 4287 Gaia DR2 3312709379213017728
2E 1046 JP11 4853 UBV M 41271
2E 0424.7+1528 LP 15-627 UCAC4 528-008756

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References (199 between 1850 and 2020) (Total 199)
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


distance : 1    velocities : 11    ROT : 4    PM : 3    Fe_H : 12    PLX : 6    MK : 1   

   

Observing logs


ISO : 1    IUE : 1   

   


External archives :

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

Link by name to the catalogue in VizieR :

V* V993 Tau AG+15 366 BD+15 627 CEL 403 2E 1046
EUVE J0427+15.5 GSC 01265-01048 HD 28205 HIC 20815 HIP 20815
2MASS J04273587+1535211 PPM 119912 1RXS J042736.0+153502 SAO 93944 TYC 1265-1048-1
UCAC4 528-008756 uvby98 520251446 uvby98 520250065 Gaia DR1 3312709374919349248 Gaia DR2 3312709379213017728

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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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2019.12.11-04:19:24

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