Beta Comae Berenices

C.D.S. - SIMBAD4 rel 1.7 - 2018.12.14CET05:43:46

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


Basic data :
* bet Com -- High proper-motion 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:
* (Ref,*,...), PM* (Ref,LHS,...), UV (2EUVE,EUVE,...), X (2E,1ES,...), ** (**,CCDM,...), IR (IRAS,IRC,...), Ro* (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 11 52.3937856 +27 52 41.453553 (Optical) [ 0.11 0.10 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) :
13 09 32.4433426 +28 07 52.067902 [ 7.00 5.00 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) :
043.5029801975 +85.4072853488 [ 0.11 0.10 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 :
-801.44 882.04 [0.14 0.10 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) 5.46 [0.09] / z(~) 0.000018 [0.000000] / cz 5.46 [0.09]
   A 2002ApJS..141..503N
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):
109.54 [0.17] 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:
F9.5V 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 4.92 [~] C 2002yCat.2237....0D
B 4.84 [~] C 2002yCat.2237....0D
V 4.25 [0.05] C 2009ApJ...694.1085V
R 3.77 [~] C 2002yCat.2237....0D
I 3.47 [~] C 2002yCat.2237....0D
G 4.0239 [0.0047] C 2018yCat.1345....0G
J 3.20 [~] C 2002yCat.2237....0D
H 2.91 [~] C 2002yCat.2237....0D
K 2.87 [~] 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!).

The link on the acronym of the identifiers give access to the information for this acronym in the dictionary of nomenclature.
Identifiers (62) :
An access of full data is available using the icon Vizier near the identifier of the catalogue

LHS 348 FK5 492 2MASS J13115238+2752411 TD1 16693
* bet Com GC 17874 N30 3027 TYC 1996-2400-1
* 43 Com GCRV 7850 NLTT 33217 UBV 11934
** STT 578A GEN# +1.00114710 PLX 3015 USNO-B1.0 1178-00276810
AG+28 1306 GJ 502 PLX 3015.00 uvby98 100114710
ASCC 686177 HD 114710 PMC 90-93 349 WDS J13119+2753A
BD+28 2193 HIC 64394 PM 13095+2808 WEB 11381
CCDM J13118+2753A HIP 64394 PPM 102444 Weis 44447
Ci 20 765 HR 4983 RBS 1229 WISEA J131151.73+275251.1
CSI+28 2193 1 IDS 13072+2823 A ROT 1942 YZ 28 6390
2E 2990 IRAS 13095+2808 RX J1311.8+2752 Zkh 193
2E 1309.5+2807 IRC +30246 1RXS J131152.9+275242 [BOA98] 53
1ES 1309+28.1 JP11 2366 SAO 82706 [ZEH2003] RX J1311.8+2752 1
2EUVE J1311+27.8 LFT 978 SKY# 24404 Gaia DR2 1460229369573307264
EUVE J1311+27.8 LSPM J1311+2752 SPOCS 553
FAUST 3706 LTT 13815 SRS 30492

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References (824 between 1850 and 2019) (Total 824)
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


diameter : 1    ROT : 1    V* : 1    distance : 2    velocities : 18    Fe_H : 70    PM : 5    PLX : 4    MK : 3   

   

Observing logs


ISO : 9    XMM : 1    herschel : 2    IUE : 13   

   


External archives :

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

Data at NED - NASA/IPAC Extragalactic Database : Beta Comae Berenices

Link by name to the catalogue in VizieR :

LHS 348 AG+28 1306 BD+28 2193 CCDM J13118+2753A 2E 2990
EUVE J1311+27.8 FAUST 3706 FK5 492 GJ 502 HD 114710
HIC 64394 HIP 64394 HR 4983 IRAS 13095+2808 IRC +30246
LSPM J1311+2752 2MASS J13115238+2752411 NLTT 33217 PLX 3015 PPM 102444
1RXS J131152.9+275242 SAO 82706 TD1 16693 TYC 1996-2400-1 USNO-B1.0 1178-00276810
uvby98 100114710 WDS J13119+2753A WISEA J131151.73+275251.1 Gaia DR2 1460229369573307264

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Annotations :
Annotations allow a user to add a note or report an error concerning the astronomical object and its data. It requires registration to post a note. See description .
The list of all annotations to SIMBAD objects can be found here .

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2018.12.14-05:43:46

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