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I/311/hip2 Hipparcos, the New Reduction (van Leeuwen, 2007)
The Astrometric Catalogue (117955 rows)
  HIP=31681
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ColumnValue  Explain   (UCD)
_RAJ200006 37 42.711 "h:m:s" Right ascension (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (computed by VizieR, not part of the original data) (pos.eq.ra)
_DEJ2000+16 23 57.41 "d:m:s" Declination (FK5, Equinox=J2000.0) at Epoch=J2000, proper motions taken into account (computed by VizieR, not part of the original data) (pos.eq.dec)
_RAB195006 34 49.480 "h:m:s" Right ascension (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (computed by VizieR, not part of the original data) (pos.eq.ra)
_DEB1950+16 26 38.08 "d:m:s" Declination (FK4, Equinox=B1950.0) at Epoch=J1950, proper motions taken into account (computed by VizieR, not part of the original data) (pos.eq.dec)
_Glon196.7735 deg Galactic longitude at Epoch=J1991.25, proper motions taken into account (computed by VizieR, not part of the original data) (pos.galactic.lon)
_Glat+04.4526 deg Galactic latitude at Epoch=J1991.25, proper motions taken into account (computed by VizieR, not part of the original data) (pos.galactic.lat)
31597recno 31597  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)

HIP 31681  (i) Hipparcos identifier (meta.id;meta.main)

n_HIPD  Existence of a note in the first version of Hipparcos catalog on Duplicity, Photometry or a General note; letters W, X, Y, Z indicate notes on several topics (field H70 of the 1997 edition, Cat. I/239) (meta.note)

Sn 1   [0,159] Solution type new reduction (Note 1)   (meta.id;stat.fit)
So2   [0,5] Solution type old reduction (Note 2)   (meta.id;stat.fit)
Nc1  Number of components (meta.number)
RArad099.42792544 deg (i) Right Ascension in ICRS, Ep=1991.25 (pos.eq.ra;meta.main)
e_RArad 2.12 mas Formal error on RArad (stat.error)
DErad+16.39941401 deg (i) Declination in ICRS, Ep=1991.25 (pos.eq.dec;meta.main)
e_DErad 1.53 mas Formal error on DErad (stat.error)
Plx 29.84 mas Parallax (pos.parallax)
e_Plx 2.23 mas Formal error on Plx (stat.error;pos.parallax)
pmRA 13.81 mas/yr Proper motion in Right Ascension (pos.pm;pos.eq.ra)
e_pmRA 2.36 mas/yr Formal error on pmRA (stat.error;pos.pm;pos.eq.ra)
pmDE -54.96 mas/yr Proper motion in Declination (pos.pm;pos.eq.dec)
e_pmDE 1.77 mas/yr Formal error on pmDE (stat.error;pos.pm;pos.eq.dec)
Ntr 61  Number of field transits used (meta.id;obs.field)
F2 0.13  Goodness of fit (stat.fit.goodness)
F1 0 % Percentage rejected data (stat.value;arith.ratio)
var 7.7  Cosmic dispersion added (stochastic solution) (stat.fit.residual)
Hpmag 1.9290 mag Hipparcos magnitude (phot.mag;em.opt.V)
e_Hpmag 0.0008 mag Error on mean Hpmag (stat.error;phot.mag;em.IR.H)
sHp 0.004 mag Scatter of Hpmag (stat.error)
VA0   [0,2] Reference to variability annex (meta.note)
B-V 0.001 mag Colour index (phot.color;em.opt.B;em.opt.V)
e_B-V 0.005 mag Formal error on colour index (stat.error;phot.color;em.opt.B)
V-I 0.040 mag V-I colour index (phot.color;em.opt.V;em.opt.I)

HIP1HIP1  Data from the first edition of the Hipparcos Catalog (1997, Cat. I/239) (meta.ref.url)
PhotPhot  Hipparcos Epoch Photometry (Plot and List) from the 1997 edition (meta.ref.url)
  
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