Alcor

Query : Alcor
C.D.S. - SIMBAD4 rel 1.7 - 2018.10.21CEST11:41:05

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


Basic data :
* g UMa -- Double or multiple 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,...), ** (Ref,CCDM,...), V* (CSV,NSV), IR (IRAS,2MASS), UV (CEL,TD1), X (2RXP,1RXS), PM* (Ref)
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 25 13.5427617370 +54 59 16.700360726 (Optical) [ 0.1912 0.1703 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 23 13.5515215563 +55 14 53.180963695 [ 19.2010 16.2010 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) :
112.7688409998055 +61.4685666425967 [ 0.1912 0.1703 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 :
113.305 -28.560 [0.384 0.324 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) -8.9 [0.9] / z(~) -0.000030 [0.000003] / cz -8.90 [0.90]
   A 1979IAUS...30...57E
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):
40.4683 [0.2219] 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:
A5V+M3-4V C 2010AJ....139..919M
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 4.260 [0.010] C 1984A&AS...57..357O
B 4.180 [0.007] C 1993A&AS..100..591O
V 4.010 [0.009] C 1993A&AS..100..591O
R 3.85 [~] C 2002yCat.2237....0D
I 3.78 [~] C 2002yCat.2237....0D
G 3.8855 [0.0042] C 2018yCat.1345....0G
J 3.72 [~] C 2002yCat.2237....0D
H 3.67 [~] C 2002yCat.2237....0D
K 3.61 [~] 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 (42) :
An access of full data is available using the icon Vizier near the identifier of the catalogue

CCDM J13240+5456D GEN# +1.00116842 2MASS J13251353+5459165 SV* ZI 1001
* 80 UMa GJ 3785 NAME Alcor TD1 16842
* g UMa GSC 03850-01384 NSV 6238 TYC 3850-1384-1
** PSF 1 HD 116842 PLX 3066 UBV 12110
** SHY 248C HGAM 624 PLX 3066.00 UBV M 19376
AG+55 887 HIC 65477 PPM 34021 uvby98 100116842
BD+55 1603 HIP 65477 ROT 1965 WDS J13239+5456Ca,Cb
CEL 4258 HR 5062 2RXP J132513.9+545914 WEB 11557
CSV 101383 IRAS 13232+5514 1RXS J132513.8+545920 Gaia DR2 1565090003969283968
GC 18155 IRAS F13232+5514 SAO 28751
GCRV 7966 JP11 2393 SKY# 24753

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References (281 between 1850 and 2018) (Total 281)
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 : 15    ROT : 5    PM : 3    Fe_H : 4    PLX : 4    MK : 24    V* : 1   

   

Observing logs


ISO : 5    IUE : 11   

   


External archives :

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

Data at NED - NASA/IPAC Extragalactic Database : Alcor

Link by name to the catalogue in VizieR :

CCDM J13240+5456D AG+55 887 BD+55 1603 CEL 4258 GJ 3785
GSC 03850-01384 HD 116842 HIC 65477 HIP 65477 HR 5062
IRAS 13232+5514 IRAS F13232+5514 2MASS J13251353+5459165 NSV 6238 PLX 3066
PPM 34021 1RXS J132513.8+545920 SAO 28751 TD1 16842 TYC 3850-1384-1
uvby98 100116842 WDS J13239+5456Ca,Cb Gaia DR2 1565090003969283968

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The list of all annotations to SIMBAD objects can be found here .

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2018.10.21-11:41:05

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