* eta Gem

Query : * eta Gem

Basic data :
* eta Gem -- Red Giant Branch star
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,...), ** (1997A&AS,**,...), IR (IRAS,IRC,...), SB* (SBC7,SBC9), V* (V*,AAVSO), X (2E,4XMM), RG* (1989ApJS), EB* (2022MNRAS), UV (TD1), NIR (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) :
06 14 52.6452865329 +22 30 24.434377815 (Optical) [ 1.0420 0.7115 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) :
06 11 51.4755686014 +22 31 23.228541103 [ 1.0420 0.7115 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) :
188.8532271892519 +02.5184495486651 [ 1.0420 0.7115 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 :
-59.530 -7.766 [1.450 1.385 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) 22.39 [0.36] / z(~) 0.000075 [0.000001] / cz 22.39 [0.36]
   A 2005A&A...430..165F
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):
4.7312 [1.0207] 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:
M2IIIa 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 6.55 [~] C 2002yCat.2237....0D
B 4.89 [~] C 2002yCat.2237....0D
V 3.28 [~] C 2002yCat.2237....0D
R 1.79 [~] C 2002yCat.2237....0D
G 2.262038 [0.006745] C 2020yCat.1350....0G
I 0.48 [~] C 2002yCat.2237....0D
J -0.33 [~] C 2002yCat.2237....0D
H -1.22 [~] C 2002yCat.2237....0D
K -1.43 [~] C 2002yCat.2237....0D
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within 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!).
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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 (53) :
An access of full data is available using the icon Vizier near the identifier of the catalogue

* eta Gem GCRV 3940 NAME Propus UBV 21376
* 7 Gem GEN# +1.00042995 PLX 1444 UBV M 11886
* eta Gem A GSC 01877-01716 PLX 1444.00 V* eta Gem
* 7 Gem A HD 42995 PMC 90-93 5710 WDS J06149+2230A
** BU 1008A HD 42995A PMSC 06088+2232 WEB 5839
ADS 4841 A HIC 29655 PPM 95649 4XMM J061452.5+223020
AG+22 665 HIP 29655 RAFGL 4478S YPAC 413
BD+22 1241 HR 2216 SAO 78135 YZ 22 2261
BD+22 1241A IDS 06088+2232 A SBC7 271 AAVSO 0608+22
CCDM J06149+2230A IRAS 06118+2231 SBC9 387 Gaia DR3 3377072212924335488
DO 12034 IRC +20139 SKY# 10538 Gaia DR2 3377072212925223424
2E 1623 JP11 1342 TD1 6430
2E 0611.8+2231 2MASS J06145266+2230244 TIC 46117984
GC 7969 N30 1337 TYC 1877-1716-1

References (259 between 1850 and 2024) (Total 259)
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 : 12    Fe_H : 2    PLX : 4    PM : 6    MK : 10   

   

Observing logs


IUE : 4   

   


External archives :

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

Data at NED - NASA/IPAC Extragalactic Database : * eta Gem

Link by name to the catalogue in VizieR :

AG+22 665 BD+22 1241 CCDM J06149+2230A DO 12034 2E 1623
GSC 01877-01716 HD 42995 HD 42995A HIC 29655 HIP 29655
HR 2216 IRAS 06118+2231 IRC +20139 2MASS J06145266+2230244 PLX 1444
PPM 95649 RAFGL 4478S SAO 78135 TD1 6430 TYC 1877-1716-1
V* eta Gem WDS J06149+2230A Gaia DR3 3377072212924335488 Gaia DR2 3377072212925223424

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