*27 Cyg

Query : *27 Cyg

Basic data :
* b01 Cyg -- RS CVn Variable
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:
RS* (), * (*,AG,...), PM* (2018yCat,Ci,...), ** (CCDM,IDS,...), V* (V*), X (1RXS), NIR (2MASS), IR (IRAS)
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) :
20 06 21.7672972921 +35 58 20.889117643 (Optical) [ 0.0379 0.0423 90 ] A 2020yCat.1350....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
FK5 coord. (ep=J2000 eq=2000) :
20 06 21.7689533018 +35 58 20.910835715 [ 0.0379 0.0423 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
FK4 coord. (ep=B1950 eq=1950) :
20 04 30.2196080626 +35 50 01.365855319 [ 0.0379 0.0423 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) :
072.8513662112516 +02.0943229047171 [ 0.0379 0.0423 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 :
-224.924 -440.162 [0.049 0.053 90] A 2020yCat.1350....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) -33.031 [0.0006] / z(spectroscopic) -0.000110 [0.000000] / cz -33.03 [0.00]
   (Opt) A 2018A&A...616A...7S
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):
41.6804 [0.0518] A 2020yCat.1350....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:
G8.5IVa 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 (6) :
B 6.21 [~] E ~
R 4.8 [~] E 2003AJ....125..984M
G 5.140914 [0.002871] C 2020yCat.1350....0G
J 3.807 [0.248] D 2003yCat.2246....0C
H 3.446 [0.230] D 2003yCat.2246....0C
K 3.121 [0.346] E 2003yCat.2246....0C
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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 (45) :
An access of full data is available using the icon Vizier near the identifier of the catalogue

* 27 Cyg GSC 02683-03963 2MASS J20062180+3558216 UBV M 24512
* b01 Cyg HD 191026 N30 4446 USNO-B1.0 1259-00399994
AG+35 1953 HIC 99031 NLTT 48737 uvby98 100191026
AP J20062180+3558216 HIP 99031 PLX 4774 V* V2008 Cyg
ASCC 521123 HR 7689 PLX 4774.00 WDS J20064+3558A
BD+35 3959 IDS 20026+3541 A PPM 84210 WEB 17606
CCDM J20064+3558A IRAS 20044+3549 1RXS J200621.8+355820 YPAC 200
Ci 20 1192 LF 3a +35 177 SAO 69413 Gaia DR2 2059103120983068160
CSI+35 3959 1 LFT 1522 SKY# 37784 Gaia DR3 2059103120983068160
GC 27904 LHS 5353 TIC 41195655
GCRV 12473 LSPM J2006+3558 TYC 2683-3963-1
GEN# +1.00191026 LTT 15892 UBV 17281

References (16 between 2019 and 2024) (Total 176)
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 :

                from: to:

                 or select by : (not exhaustive, explanation here)


Collections of Measurements


velocities : 15    distance : 2    ROT : 4    Fe_H : 24    PLX : 5    PM : 11    MK : 14   

   

Warning : measurements from IRAS, IRC, SAO, CL.g (ACO), GJ have been removed
(they are still available using the icon Vizier near the identifier of the catalogue, or at the bottom of the page in the section "External links" to get the full data)

velocities (15)

 |typ|    Value    R   m.e.  |A (Nmes)|na,Q,dom ,   res    D| Obs.date | Rem.  |Or|     Reference     |
 ------------------------------------------------------------------------------------------------------
 |v  |  -32.723301    0.01049|A (    )|s , ,NIR ,           |          |       |  |2020AJ....160..120J|
 

distance (2)

 | distance Q unit|  err-        err+     | method |     reference     |
 -----------------------------------------------------------------------
 |   23.9921  pc  |  -0.0298     +0.0298  |paral   |2020yCat.1350....0G|
 

rot (4)

 |  Vsini  [  err   ] (mes)|Q|     reference     |
 -------------------------------------------------
 |   5.789 [        ] (   )| |2020AJ....160..120J|
 

fe_h (24)

 | Teff  log.g | Fe_H  c|CompStar |CatNo|     Reference     |
 ------------------------------------------------------------
 |  5136 3.66  |-0.02   |SUN      |     |2022A&A...663A...4S|
 

plx (5)

 |    plx    :    m.e     R |     reference     |
 ------------------------------------------------
 |  41.6804  :   0.0518     |2020yCat.1350....0G|
 

pm (11)

 |  pm-ra  [   m.e   ]|  pm-de  [   m.e   ]|syst|     reference     |
 --------------------------------------------------------------------
 | -224.924[    0.049]| -440.162[    0.053]|ICRS|2020yCat.1350....0G|
 

mk (14)

 |ds/mss|           Spectral type            |     reference     |
 -----------------------------------------------------------------
m|  /   |K0IV                                |2009A&A...508.1313F|
 
Observing logs


IUE : 4   

   

Warning : measurements from IRAS, IRC, SAO, CL.g (ACO), GJ have been removed
(they are still available using the icon Vizier near the identifier of the catalogue, or at the bottom of the page in the section "External links" to get the full data)

iue (4)

 |Homogenized Name:  ComplID   |PROG |CL|D CAM IMAGE A| FES  MD|Obs.da  Time |ExpTim|m|CEB|S|      Comments      |F|     reference     |
 ---------------------------------------------------------------------------------------------------------------------------------------
 |HD 191026       :            |MGDDM|46|L SWP 15272 L|18180 FO|811016 085000|003600| |232|G|E=67,C=35,B=32      |*|1996IUEML.C......0I|
 

External archives :

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

Data at NED - NASA/IPAC Extragalactic Database : *27 Cyg

Link by name to the catalogue in VizieR :

AG+35 1953 AP J20062180+3558216 BD+35 3959 CCDM J20064+3558A GSC 02683-03963
HD 191026 HIC 99031 HIP 99031 HR 7689 IRAS 20044+3549
LF 3a +35 177 LHS 5353 LSPM J2006+3558 2MASS J20062180+3558216 NLTT 48737
PLX 4774 PPM 84210 1RXS J200621.8+355820 SAO 69413 TYC 2683-3963-1
USNO-B1.0 1259-00399994 uvby98 100191026 V* V2008 Cyg WDS J20064+3558A Gaia DR2 2059103120983068160
Gaia DR3 2059103120983068160

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