55 Cygni

Query : 55 Cygni
C.D.S. - SIMBAD4 rel 1.7 - 2018.12.19CET05:36:56

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


Basic data :
* 55 Cyg -- Blue supergiant 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,...), ** (**,ADS,...), V* (CSV,V*,...), IR (AKARI,IRAS,...), Em* (EM*,[KW97]), UV (CEL,TD1), s*b (Ref), Pu* (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) :
20 48 56.2911163453 +46 06 50.883966851 (Optical) [ 0.1194 0.1098 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) :
20 47 13.9512906349 +45 55 40.190422176 [ 12.2006 10.9006 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) :
085.7535234584208 +01.4900300838425 [ 0.1194 0.1098 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 :
-1.912 -2.529 [0.244 0.218 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) -7.2 [2] / z(~) -0.000024 [0.000007] / cz -7.20 [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):
0.8496 [0.1348] 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:
B4Ia C 2009A&A...501..297Z
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 4.83 [~] C 2002yCat.2237....0D
B 5.28 [~] C 2002yCat.2237....0D
V 4.86 [~] C 2002yCat.2237....0D
R 4.41 [~] C 2002yCat.2237....0D
I 4.10 [~] C 2002yCat.2237....0D
G 4.6332 [0.0035] C 2018yCat.1345....0G
J 3.89 [~] C 2002yCat.2237....0D
H 3.78 [~] C 2002yCat.2237....0D
K 3.75 [~] C 2002yCat.2237....0D
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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.
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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 (44) :
An access of full data is available using the icon Vizier near the identifier of the catalogue

* 55 Cyg EM* MWC 353 IDS 20455+4545 A TD1 27324
** HJ 1581A GC 29036 IRAS 20472+4555 TYC 3575-6709-1
ADS 14337 A GCRV 13065 JP11 3282 UBV 18033
AG+45 1758 GEN# +1.00198478A LS III +45 23 UBV M 25202
AKARI-IRC-V1 J2048563+460650 GSC 03575-06709 2MASS J20485628+4606508 V* V1661 Cyg
ALS 11566 HD 198478 MCW 946 WDS J20489+4607A
BD+45 3291 HGAM 952 PLX 4980 WEB 18624
CCDM J20489+4607A HIC 102724 PPM 60515 YPAC 203
CEL 5176 Hilt 1013 ROT 3044 [KW97] 49-52
CSI+45 3291 1 HIP 102724 SAO 50099 AAVSO 2045+45
CSV 102035 HR 7977 SKY# 39481 Gaia DR2 2166348110749083520

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References (463 between 1850 and 2019) (Total 463)
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 : 10    ROT : 5    PM : 5    Fe_H : 6    PLX : 3    MK : 29    V* : 1   

   

Observing logs


ISO : 1    herschel : 4    IUE : 17   

   


External archives :

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

Data at NED - NASA/IPAC Extragalactic Database : 55 Cygni

Link by name to the catalogue in VizieR :

AG+45 1758 AKARI-IRC-V1 J2048563+460650 ALS 11566 BD+45 3291 CCDM J20489+4607A
CEL 5176 GSC 03575-06709 HD 198478 HIC 102724 HIP 102724
HR 7977 IRAS 20472+4555 LS III +45 23 2MASS J20485628+4606508 PLX 4980
PPM 60515 SAO 50099 TD1 27324 TYC 3575-6709-1 V* V1661 Cyg
WDS J20489+4607A Gaia DR2 2166348110749083520

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2018.12.19-05:36:56

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