W Hydrae

Query : W Hydrae
C.D.S. - SIMBAD4 rel 1.7 - 2018.09.22CEST12:20:14

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


Basic data :
V* W Hya -- Variable Star of Mira Cet 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:
* (CD,CPD,...), ** (BDS,CCDM,...), IR (IRAS,IRC,...), V* (V*,ASAS,...), smm (JCMTSE,JCMTSF), Mas ([PCC93],[WCP90]), PM* (Ref), Mi* (Ref), UV (FAUST)
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 defined epoch and convolved with error on propermotion),
    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) :
13 49 02.0018313132 -28 22 03.532006894 (Optical) [ 0.7857 0.5909 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] : coordinates error major axis, minor axis (in mas at defined epoch and convolved with error on propermotion),
    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) :
13 46 12.1891908615 -28 07 06.643468070 [ 64.9050 62.8030 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 defined epoch and convolved with error on propermotion),
    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) :
318.0223622727604 +32.8107625329120 [ 0.7857 0.5909 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 :
-51.773 -59.688 [1.298 1.256 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) 42.3 [2] / z(~) 0.000141 [0.000007] / cz 42.30 [2.00]
   E 1953GCRV..C......0W
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):
6.0906 [0.8161] 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:
M7.5-9e B 1974ApJS...28..271K
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 (6) :
B 8.97 [0.02] D 2000A&A...355L..27H
V 7.70 [~] C 2002yCat.2237....0D
G 5.9146 [0.1095] C 2018yCat.1345....0G
J -1.59 [~] C 2002yCat.2237....0D
H -2.56 [~] C 2002yCat.2237....0D
K -3.05 [~] C 2002yCat.2237....0D
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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 (35) :
An access of full data is available using the icon Vizier near the identifier of the catalogue

V* W Hya GCRV 8148 JCMTSF J134902.0-282202 WDS J13490-2822A
ASAS J134902-2822.1 GSC 06728-00019 JP11 2429 WEB 11855
BDS 6635 A HD 120285 2MASS J13490199-2822034 YZ 118 8744
CCDM J13491-2822A HIC 67419 PPM 262109 [LFO93] 1346-28
CD-27 9429 HIP 67419 RAFGL 1650 [PCC93] 155
CPD-27 4792 IDS 13434-2752 A SAO 181981 [WCP90] 134612.033-280709.09
FAUST 3909 IRAS 13462-2807 SKY# 25345 AAVSO 1343-27
FK5 5220 IRC -30207 SRS 11878 Gaia DR2 6177092406867764352
GC 18659 JCMTSE J134902.0-282202 TYC 6728-19-1

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References (560 between 1850 and 2018) (Total 560)
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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                 or select by : (not exhaustive, explanation here)


Collections of Measurements


velocities : 7    PM : 4    PLX : 3    MK : 11    V* : 4   

   

Observing logs


ISO : 43    herschel : 22    IUE : 3   

   


External archives :

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

Data at NED - NASA/IPAC Extragalactic Database : W Hydrae

Link by name to the catalogue in VizieR :

V* W Hya CCDM J13491-2822A CD-27 9429 CPD-27 4792 FAUST 3909
FK5 5220 GSC 06728-00019 HD 120285 HIC 67419 HIP 67419
IRAS 13462-2807 IRC -30207 2MASS J13490199-2822034 PPM 262109 RAFGL 1650
SAO 181981 TYC 6728-19-1 WDS J13490-2822A Gaia DR2 6177092406867764352

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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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2018.09.22-12:20:14

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