HD 131977

Query : HD 131977

Basic data :
HD 131977 -- BY Dra 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: 		* (2013A&A,HD,...), PM* (Ci,LFT,...), ** (**,ADS,...), IR (IRAS,IRC), BY* (2017ARep), V* (V*), NIR (2MASS)
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) : 		14 57 28.0007918772 -21 24 55.727265310 (Optical) [ 0.0539 0.0468 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
FK4 coord. (ep=B1950 eq=1950) : 		14 54 32.4492963847 -21 11 28.389998749 [ 0.0539 0.0468 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) : 		338.2422596502433 +32.6768463584130 [ 0.0539 0.0468 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 : 		1031.472 -1723.619 [0.068 0.055 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) 26.987 [0.0002] / z(spectroscopic) 0.000090 [0.000000] / cz 26.99 [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): 		169.8843 [0.0653] 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: 		K4V 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 (9) :
U 7.89 [~] C 2002yCat.2237....0D
B 6.83 [~] C 2002yCat.2237....0D
V 5.72 [~] C 2002yCat.2237....0D
R 4.74 [~] C 2002yCat.2237....0D
G 5.364037 [0.002851] C 2020yCat.1350....0G
I 4.19 [~] C 2002yCat.2237....0D
J 3.83 [~] C 2002yCat.2237....0D
H 3.23 [~] C 2002yCat.2237....0D
K 3.10 [~] C 2002yCat.2237....0D
SIMBAD within arcmin
', {sourceSize:12, color:'#30a090'})); aladin.on('objectClicked', function(object) { var objName=object.data.MAIN_ID; aladin.showPopup(object.ra,object.dec,'',''+ objName+''); });" title="Show Simbad objects"> Overlay Simbad points in this preview
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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!). sed-help-icon

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

The count displayed here is the number of children objects.
The list obtained by clicking the button may be larger, as some children may be linked with different references or probability.

%This number is the number of distinct objets linked, by using this button, you will obtain all links (may be more than one) from that object to his children

: 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 (57) :
An access of full data is available using the icon Vizier near the identifier of the catalogue

HD 131977 HIC 73184 8pc 169.32A UBV 12990
** HN 28A HIP 73184 PLX 3375 UCAC4 343-073968
ADS 9446 A HR 5568 PMC 90-93 979 uvby98 100131977 A
BD-20 4125 IRAS 14545-2112 PM 14545-2111 V* KX Lib
CCDM J14574-2124A IRC -20275 PMSC 14516-2058A VVO 266
Ci 20 900 JP11 2553 PPM 263609 WDS J14575-2125A
CSI-20 4125 1 LAL 27173 SACS 325 WEB 12542
CSI-20 4123 2 LFT 1161 SAO 183040 YZ 111 6202
FK5 1391 LHS 387 SKY# 27162 Zkh 214
GC 20113 LPM 551 SPOCS 627 [RHG95] 2367
GCRV 8668 LTT 5949 SRS 31391 Gaia DR3 6232511606838403968
GEN# +1.00131977A 2MASS J14572788-2124526 StKM 2-1093 Gaia DR2 6232511606838403968
GJ 570 A MCC 726 TIC 287157634
GSC 06180-00855 N30 3376 TYC 6180-855-1
GSC 06180-01226 NLTT 38872 UBV 12988

References (485 between 1850 and 2024) (Total 485)
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


velocities : 13    V* : 1    distance : 2    ROT : 5    Fe_H : 38    PLX : 4    PM : 9    MK : 12   

   

Observing logs


herschel : 2    IUE : 3   

   

External archives :

Data at NED - NASA/IPAC Extragalactic Database : HD 131977

Link by name to the catalogue in VizieR :

HD 131977 BD-20 4125 CCDM J14574-2124A FK5 1391 GJ 570 A
GSC 06180-00855 GSC 06180-01226 HIC 73184 HIP 73184 HR 5568
IRAS 14545-2112 IRC -20275 LHS 387 2MASS J14572788-2124526 NLTT 38872
PLX 3375 PPM 263609 SAO 183040 TYC 6180-855-1 UCAC4 343-073968
uvby98 100131977 A V* KX Lib WDS J14575-2125A Gaia DR3 6232511606838403968 Gaia DR2 6232511606838403968

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