eps Cyg

Query : eps Cyg
C.D.S. - SIMBAD4 rel 1.7 - 2018.12.11CET02:42:07

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


Basic data :
* eps Cyg -- 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,...), PM* (Ref,Ci,...), ** (CCDM,**,...), IR (IRAS,IRC,...), UV (TD1)
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 46 12.6823609 +33 58 12.924926 (Optical) [ 0.07 0.08 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) :
20 44 11.1683777 +33 46 55.011586 [ 4.50 4.00 0 ]
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) :
075.9513550602 -05.7154127637 [ 0.08 0.07 0 ]
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 :
355.66 330.60 [0.08 0.09 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) -12.41 [0.12] / z(~) -0.000041 [0.000000] / cz -12.41 [0.12]
   A 2008AJ....135..209M
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):
44.86 [0.12] 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:
K0III B 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 4.370 [0.010] C 1984A&AS...57..357O
B 3.520 [0.007] C 1993A&AS..100..591O
V 2.480 [0.009] C 1993A&AS..100..591O
R 1.73 [~] C 2002yCat.2237....0D
I 1.19 [~] C 2002yCat.2237....0D
G 2.0227 [0.0063] C 2018yCat.1345....0G
J 0.73 [~] C 2002yCat.2237....0D
H 0.20 [~] C 2002yCat.2237....0D
K 0.09 [~] 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.
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!).
Some important notes on this object about identifications and objects associations.
notes:

  • * eps Cyg A = WDS J20462+3358Aa, * eps Cyg B = WDS J20462+3358Ab (not WDS J20462+3358B nor CCDM J20462+3358B)


Hierarchy : number of linked objects
whatever the membership probability is (see description here ) :

: 1 : 1 Display criteria :

The link on the acronym of the identifiers give access to the information for this acronym in the dictionary of nomenclature.
Identifiers (61) :
An access of full data is available using the icon Vizier near the identifier of the catalogue

CCDM J20462+3358A FK5 780 LHS 5358b SRS 30780
* eps Cyg GC 28959 LHS 5358a TD1 27254
* eps Cyg A GCRV 13020 LSPM J2046+3358E TYC 2695-4139-1
* 53 Cyg GEN# +1.00197989 LTT 16073 UBV 17995
* eps Cyg B GJ 806.1 A LTT 16072 UBV M 25157
** CHR 100 GJ 9707 A 2MASS J20461266+3358128 UBV 21446
** STT 594A GJ 806.1 B N30 4592 USNO-B1.0 1239-00446554
** BU 676A GJ 9707 B NAME Aljanah uvby98 100197989 A
** LEP 96A HD 197989 NLTT 49863 WDS J20462+3358A
ADS 14274 A HIC 102488 PLX 4959 WDS J20462+3358Aa,Ab
AG+33 2000 HIP 102488 PMC 90-93 549 WEB 18565
ASCC 627550 HR 7949 PPM 85489 [RHG95] 3250
BD+33 4018 IDS 20422+3336 A RAFGL 2648 Gaia DR2 1869302503184405760
Ci 20 1229 IRAS 20442+3347 ROT 3035
CSI+33 4018 1 IRC +30451 SAO 70474
CSI+33 4018 2 JP11 3274 SKY# 39364

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References (465 between 1850 and 2019) (Total 465)
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 : 18    ROT : 3    PM : 11    Fe_H : 42    PLX : 3    MK : 31   

   

Observing logs


IUE : 6   

   


External archives :

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

Data at NED - NASA/IPAC Extragalactic Database : eps Cyg

Link by name to the catalogue in VizieR :

CCDM J20462+3358A AG+33 2000 BD+33 4018 FK5 780 GJ 806.1 A
GJ 9707 A GJ 806.1 B GJ 9707 B HD 197989 HIC 102488
HIP 102488 HR 7949 IRAS 20442+3347 IRC +30451 LHS 5358b
LHS 5358a LSPM J2046+3358E 2MASS J20461266+3358128 NLTT 49863 PLX 4959
PPM 85489 RAFGL 2648 SAO 70474 TD1 27254 TYC 2695-4139-1
USNO-B1.0 1239-00446554 uvby98 100197989 A WDS J20462+3358A WDS J20462+3358Aa,Ab Gaia DR2 1869302503184405760

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2018.12.11-02:42:08

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