VizieR

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VizieR

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J/A+A/537/A120/table1 Rotational velocities of A-type stars. IV. (Zorec+, 2012)
Fundamental parameters for 2014 B6 to F2-type stars (2014 rows)
  recno=685
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ColumnValue  Explain   (UCD)
_RAJ200007 22 13.5290 "h:m:s" Right ascension (FK5, Equinox=J2000.0) (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services) (pos.eq.ra)
_DEJ2000-19 00 59.765 "d:m:s" Declination (FK5, Equinox=J2000.0) (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services) (pos.eq.dec)
_RAB195007 20 01.3228 "h:m:s" Right ascension (FK4, Equinox=B1950.0) (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services) (pos.eq.ra)
_DEB1950-18 55 12.449 "d:m:s" Declination (FK4, Equinox=B1950.0) (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services) (pos.eq.dec)
_Glon233.2943685 deg Galactic longitude (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services) (pos.galactic.lon)
_Glat-02.0565479 deg Galactic latitude (computed by VizieR, not part of the original data. The format may include more digits than the original data because of internal accuracy requirements in VizieR and across other CDS services) (pos.galactic.lat)
685recno 685  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)

HD 57821  Star HD number (meta.id;meta.main)
SpTypeB7IV  MK spectral type (src.spType)
logT 4.095 [K] Logarithmic effective temperature (phys.temperature.effective)
e_logT 0.003 [K] Error on logT (stat.error)
logL 2.6890 [Lsun] Logarithmic luminosity (phys.luminosity)
e_logL 0.0370 [Lsun] Error on logL (stat.error)
Mass 4.12 Msun Stellar mass (phys.mass)
e_Mass 0.08 Msun Error on the stellar mass (stat.error;phys.mass)
Age 0.896  Fractional age on the main sequence (time.age;meta.main)
e_Age 0.022  Error on the fractional age (stat.error;time.age)
vsini116 km/s Projected rotational velocity (phys.veloc.rotat)
r_vsini16  Source of vsini (Note 1)   (meta.ref)
Class   Classification of the star: blank=normal, CB=Close binary, CP=chemically peculiar (meta.code.class)

SimbadSimbad  ask the Simbad data-base about this object
_RA110.55637 deg (i) Right Ascension (J2000) from SIMBAD (not part of the original data) (pos.eq.ra;meta.main)
_DE-19.01660 deg (i) Declination (J2000) from SIMBAD (not part of the original data) (pos.eq.dec;meta.main)
  
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