eta Cas

Query : eta Cas
C.D.S. - SIMBAD4 rel 1.7 - 2018.12.12CET03:14:03

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


Basic data :
* eta Cas -- Spectroscopic 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:
* (*,AG,...), PM* (Ref,Ci,...), ** (**,ADS,...), IR (IRAS,IRC,...), X (2E,1RXS), UV (TD1), SB* (SBC7), 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] : 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) :
00 49 06.2907161 +57 48 54.675740 (Optical) [ 0.30 0.27 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 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) :
00 46 03.9769086 +57 33 02.125522 [ 20.00 16.50 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) :
122.6200314887 -05.0551494224 [ 0.30 0.27 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 :
1086.59 -559.43 [0.40 0.33 90] 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) 8.44 [0.09] / z(~) 0.000028 [0.000000] / cz 8.44 [0.09]
   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):
167.98 [0.48] A 2007A&A...474..653V
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:
F9V+M0-V C 1989ApJS...71..245K
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 4.04 [~] C 2002yCat.2237....0D
B 4.02 [~] C 2002yCat.2237....0D
V 3.44 [~] C 2002yCat.2237....0D
R 2.94 [~] C 2002yCat.2237....0D
I 2.58 [~] C 2002yCat.2237....0D
G 3.1873 [0.0060] C 2018yCat.1345....0G
J 2.37 [~] C 2002yCat.2237....0D
H 2.02 [~] C 2002yCat.2237....0D
K 1.99 [~] 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 (59) :
An access of full data is available using the icon Vizier near the identifier of the catalogue

V* eta Cas 2E 0046.1+5733 LHS 123 SBC7 31
* eta Cas A GC 962 LSPM J0049+5748 SKY# 1265
* 24 Cas GCRV 447 LTT 10287 SPOCS 41
* eta Cas GEN# +1.00004614A 2MASS J00490622+5748545 TD1 443
** STF 60A GJ 34 A N30 163 TYC 3663-2669-1
ADS 671 A HD 4614A NAME Achird UBV 650
AG+57 81 HD 4614 NLTT 2690 USNO-B1.0 1478-00036288
ASCC 159214 HIC 3821 8pc 167.99A USNO 793
BD+57 150A HIP 3821 PLX 155 uvby98 100004614
BD+57 150 HR 219 PM 00461+5733 WDS J00491+5749A
CCDM J00491+5749A IDS 00430+5717 PPM 25718 WEB 675
Ci 20 56 IRAS 00461+5732 ROT 6014 Wolf 24
CSI+57 150 8 IRC +60019 ROT 3488 Zkh 15
CSI+57 150 1 JP11 419 1RXS J004904.0+574917 Gaia DR2 425040000951479424
2E 191 LFT 74 SAO 21732

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References (577 between 1850 and 2019) (Total 577)
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 : 7    ROT : 5    PM : 10    Fe_H : 50    PLX : 3    MK : 31   

   

Observing logs


ISO : 2    herschel : 2    IUE : 11   

   


External archives :

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

Data at NED - NASA/IPAC Extragalactic Database : eta Cas

Link by name to the catalogue in VizieR :

V* eta Cas AG+57 81 BD+57 150 CCDM J00491+5749A 2E 191
GJ 34 A HD 4614A HD 4614 HIC 3821 HIP 3821
HR 219 IRAS 00461+5732 IRC +60019 LHS 123 LSPM J0049+5748
2MASS J00490622+5748545 NLTT 2690 PLX 155 PPM 25718 1RXS J004904.0+574917
SAO 21732 TD1 443 TYC 3663-2669-1 USNO-B1.0 1478-00036288 uvby98 100004614
WDS J00491+5749A Gaia DR2 425040000951479424

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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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2018.12.12-03:14:03

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