VizieR

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VizieR

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J/ApJ/687/1264/table8 Age estimation for solar-type dwarfs (Mamajek+, 2008)
Old solar-type dwarfs from Valenti et al. (2005, Cat. J/ApJS/159/141) with age uncertainties of <20% (23 rows)
  recno=19
Post annotation about this record
ColumnValue  Explain   (UCD)
_RAJ200020 11 11.9383 "h:m:s" Right ascension (FK5, Equinox=J2000.0) at Epoch=J2000. (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)
_DEJ2000-36 06 04.361 "d:m:s" Declination (FK5, Equinox=J2000.0) at Epoch=J2000. (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)
_RAB195020 07 56.8973 "h:m:s" Right ascension (FK4, Equinox=B1950.0) at Epoch=J2000. (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)
_DEB1950-36 15 01.275 "d:m:s" Declination (FK4, Equinox=B1950.0) at Epoch=J2000. (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)
_Glon005.2331663 deg Galactic longitude at Epoch=J2000. (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-30.9246576 deg Galactic latitude at Epoch=J2000. (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)
19recno 19  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)

HD191408  HD number (Cat. III/135) (meta.id;meta.main)
B-V 0.868 mag B-V color from Perryman et al. (HIP, 1997, Cat. I/239) (phot.color;em.opt.B;em.opt.V)
tau15.0 Gyr Isochronal age (Note 1)   (time.age)
logR'HK-4.99  R'HK Chromospheric activity (phot.flux;arith.ratio)
r_logR'HK46  Reference for logR'HK, in refs.dat file (meta.ref;pos.frame)
DVMAG 0.39 mag Difference between stellar absolute magnitude and that for an MS star of the same B-V color (phys.magAbs;em.opt.B)

SimbadSimbad  ask the Simbad data-base about this object (meta.ref.url)
_RA302.79974 deg (i) Right Ascension (J2000) from SIMBAD (not part of the original data) (pos.eq.ra;meta.main)
_DE-36.10121 deg (i) Declination (J2000) from SIMBAD (not part of the original data) (pos.eq.dec;meta.main)
  
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