HD 17925

Query : HD 17925
C.D.S. - SIMBAD4 rel 1.7 - 2019.11.20CET06:58:09

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


Basic data :
HD 17925 -- Variable of RS CVn type
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* (), * (Ref,BD,...), PM* (Ref,Ci,...), X (2E,1ES,...), UV (2EUVE,EUVE,...), ** (**,WDS), V* (V*,NSV), IR (IRAS,2MASS), Fl* ([GKL99]), 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] : 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 32.1281853696 -12 46 10.970649463 (Optical) [ 0.0389 0.0345 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) :
02 50 07.3995201870 -12 58 16.645450884 [ 0.0389 0.0345 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) :
192.0737358081525 -58.2540329073494 [ 0.0389 0.0345 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 :
397.346 -189.114 [0.076 0.075 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) 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):
96.5400 [0.0435] 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:
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
I 4.89 [~] C 2002yCat.2237....0D
G 5.7970 [0.0014] C 2018yCat.1345....0G
J 4.62 [~] C 2002yCat.2237....0D
H 4.13 [~] C 2002yCat.2237....0D
K 4.06 [~] 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.
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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 (44) :
An access of full data is available using the icon Vizier near the identifier of the catalogue

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

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References (461 between 1850 and 2020) (Total 461)
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 : 16    ROT : 8    PM : 5    Fe_H : 47    PLX : 4    MK : 7    V* : 2   

   

Observing logs


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

   


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 :

V* EP Eri BD-13 544 2E 674 EUVE J0252-12.7 GJ 117
HD 17925 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
WDS J02525-1246A [GKL99] 82 Gaia DR2 5160075762132996992

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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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2019.11.20-06:58:09

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