HD 17925

Query : HD 17925

Basic data :
HD 17925 -- 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* (), * (2013A&A,HD,...), PM* (2018yCat,Ci,...), X (2E,1ES,...), UV (2EUVE,EUVE,...), ** (**,WDS), V* (NSV,V*), Er* ([GKL99]), Ro* (1996ApJ), 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) : 		02 52 32.1281856011 -12 46 10.968056223 (Optical) [ 0.0251 0.0200 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) : 		02 50 07.4005685322 -12 58 16.641519990 [ 0.0251 0.0200 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) : 		192.0737382959485 -58.2540299187715 [ 0.0251 0.0200 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 : 		397.353 -189.281 [0.035 0.025 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) 17.92 [0.06] / z(spectroscopic) 0.000060 [0.000000] / cz 17.92 [0.06]
   (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): 		96.5200 [0.0258] 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: 		K1V C 1988MSS...C04....0H
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 7.48 [~] C 2002yCat.2237....0D
B 6.91 [~] C 2002yCat.2237....0D
V 6.05 [~] C 2002yCat.2237....0D
R 5.34 [~] C 2002yCat.2237....0D
G 5.812265 [0.002988] C 2020yCat.1350....0G
I 4.89 [~] C 2002yCat.2237....0D
J 4.62 [~] C 2002yCat.2237....0D
H 4.13 [~] C 2002yCat.2237....0D
K 4.06 [~] C 2002yCat.2237....0D
SIMBAD within arcmin
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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 ) :

: 1 : 136 Display criteria :

The link on the acronym of the identifiers give access to the information for this acronym in the dictionary of nomenclature.
Identifiers (46) :
An access of full data is available using the icon Vizier near the identifier of the catalogue

HD 17925 GEN# +1.00017925 PLX 599.00 USNO 804
** LWR 4A GJ 117 PPM 212115 uvby98 100017925
BD-13 544 HIC 13402 RBS 367 V* EP Eri
Ci 20 190 HIP 13402 1RXS J025232.3-124610 WDS J02525-1246A
Ci 18 373 HR 857 SAO 148647 WEB 2683
2E 674 IRAS 02501-1258 SKY# 4312 YZ V11 652
2E 0250.1-1258 JP11 713 SPOCS 140 Zkh 47
1ES 0250-12.9 LTT 1372 TD1 1733 [GKL99] 82
2EUVE J0252-12.7 2MASS J02523210-1246109 TIC 30016911 Gaia DR2 5160075762132996992
EUVE J0252-12.7 NLTT 9195 TYC 5292-897-1 Gaia DR3 5160075762132996992
GC 3449 NSV 975 UBV M 9201
GCRV 1611 PLX 599 UBV 2795

References (514 between 1850 and 2024) (Total 514)
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 : 17    V* : 2    distance : 2    ROT : 13    Fe_H : 52    PLX : 5    PM : 6    MK : 8   

   

Observing logs


herschel : 5    ISO : 4    IUE : 10    XMM : 1   

   

External archives :

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

Data at NED - NASA/IPAC Extragalactic Database : HD 17925

Link by name to the catalogue in VizieR :

HD 17925 BD-13 544 2E 674 EUVE J0252-12.7 GJ 117
HIC 13402 HIP 13402 HR 857 IRAS 02501-1258 2MASS J02523210-1246109
NLTT 9195 NSV 975 PLX 599 PPM 212115 1RXS J025232.3-124610
SAO 148647 TD1 1733 TYC 5292-897-1 uvby98 100017925 V* EP Eri
WDS J02525-1246A [GKL99] 82 Gaia DR2 5160075762132996992 Gaia DR3 5160075762132996992

Search by coordinates in Vizier (radius: 9 arcsec)

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