81 cancri

Query : 81 cancri
C.D.S. - SIMBAD4 rel 1.7 - 2021.01.20CET08:49:48

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


Basic data :
* pi.01 Cnc -- Spectroscopic binary
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* (2016ApJ,Ci,...), ** (**,CCDM,...), IR (AKARI,IRAS,...), SB* (2004A&A,SBC9), UV (TD1), X (1RXS)
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) :
09 12 17.5474052342 +14 59 45.776204103 (Optical) [ 0.2846 0.2604 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) :
09 09 33.4926436888 +15 11 55.176806641 [ 0.2846 0.2604 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) :
214.6514351884538 +37.8575551189521 [ 0.2846 0.2604 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 :
-523.619 244.282 [0.525 0.439 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) 49.99 [0.07] / z(spectroscopic) 0.000167 [0.000000] / cz 49.99 [0.07]
   (Opt) A 2018A&A...619A..81H
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):
49.1493 [0.3467] 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:
G9V C 2003AJ....126.2048G
Syntax of angular size is : "maj-axis min-axis angle (wtype) quality bibcode"
  • maj-axis : major axis size (arc minutes)
  • min-axis : minor axis size (arc minutes)
  • angle : orientation angle (in degrees)
  • (wtype) : wavelength class for the origin of the angular size (Rad, mm, IR, Opt, UV, Xray, Gam)
  • quality : flag of quality of the angular size values ( A=best quality -> E=worst quality, {� } =unknown quality)
  • bibcode : bibcode of the angular size reference
Angular size (arcmin):
0.0017 0.0 289 (Opt) D 2001AJ....122.3466M
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 7.49 [~] C 2002yCat.2237....0D
B 7.24 [~] C 2002yCat.2237....0D
V 6.51 [~] C 2002yCat.2237....0D
R 5.90 [~] C 2002yCat.2237....0D
G 6.2782 [0.0002] C 2018yCat.1345....0G
I 5.52 [~] C 2002yCat.2237....0D
J 5.121 [0.021] C 2003yCat.2246....0C
H 4.77 [0.04] E 2003yCat.2246....0C
K 4.664 [0.017] C 2003yCat.2246....0C
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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:

  • Components Aa (GJ 337 A) and Ab (GJ 337 B) are not separated in Simbad.



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

* 81 Cnc GC 12693 LSPM J0912+1459 TD1 13647
* pi.01 Cnc GCRV 6016 LTT 12423 TYC 825-1543-1
** FIN 347 GEN# +1.00079096 2MASS J09121762+1459454 UBV 8813
** STT 569A GJ 337 A N30 2178 USNO-B1.0 1049-00177195
** BUP 125A GJ 337 B NLTT 21191 WDS J09123+1500Aa,Ab
AG+15 1030 HD 79096 PLX 2193 WDS J09123+1500A
AKARI-IRC-V1 J0912172+145947 HIC 45170 PMC 90-93 5903 WEB 8616
ASCC 947554 HIP 45170 PM 09096+1512 WISEA J091217.18+145948.2
BD+15 2003 HR 3650 PPM 126206 YZ 15 3722
CCDM J09123+1459AP IDS 09068+1524 AP 1RXS J091218.4+150001 Gaia DR1 607464712464224384
Ci 20 514 IRAS 09095+1512 SAO 98427 Gaia DR2 607464716759460480
CSI+15 2003 1 JP11 1777 SBC9 559
CSI+15 2003 5 LFT 633 SBC9 1728
GAT 1113 LHS 2114 SKY# 17752

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References (209 between 1850 and 2021) (Total 209)
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 : 7    ROT : 1    PM : 11    Fe_H : 2    PLX : 5    MK : 4   

   

Observing logs


herschel : 2   

   


External archives :

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

Data at NED - NASA/IPAC Extragalactic Database : 81 cancri

Link by name to the catalogue in VizieR :

AG+15 1030 AKARI-IRC-V1 J0912172+145947 BD+15 2003 CCDM J09123+1459AP GJ 337 A
GJ 337 B HD 79096 HIC 45170 HIP 45170 HR 3650
IRAS 09095+1512 LHS 2114 LSPM J0912+1459 2MASS J09121762+1459454 NLTT 21191
PLX 2193 PPM 126206 1RXS J091218.4+150001 SAO 98427 TD1 13647
TYC 825-1543-1 USNO-B1.0 1049-00177195 WDS J09123+1500Aa,Ab WDS J09123+1500A WISEA J091217.18+145948.2
Gaia DR1 607464712464224384 Gaia DR2 607464716759460480

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2021.01.20-08:49:48

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