VizieR

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VizieR

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II/354/tgasext HIP and TGAS stars reddening and extinction (Gontcharov+ 2018)
E(J-Ks), E(B-V), Rv and Av for Gaia DR1 TGAS stars (711237 rows)
  recno=92660
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ColumnValue  Explain   (UCD)
_RAJ200003 34 36.264 "h:m:s" Right ascension (FK5, Equinox=J2000.0) at Epoch=J2015. (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+20 35 56.40 "d:m:s" Declination (FK5, Equinox=J2000.0) at Epoch=J2015. (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)
_RAB195003 31 42.472 "h:m:s" Right ascension (FK4, Equinox=B1950.0) at Epoch=J2015. (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+20 25 57.50 "d:m:s" Declination (FK4, Equinox=B1950.0) at Epoch=J2015. (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)
_Glon166.796586 deg Galactic longitude at Epoch=J2015. (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-28.053508 deg Galactic latitude at Epoch=J2015. (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)
92660recno 92660  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)

Source 58200930029412608  Source ID (Cat. I/337) (meta.id;meta.main)
HIP    Hipparcos (Cat. I/311) identifier (meta.id)
RA_ICRS053.6511 deg (i) Approximate right ascension (ICRS) at epoch 2015.0 (Note G1)   (pos.eq.ra;meta.main)
DE_ICRS+20.5990 deg (i) Approximate declination (ICRS) at epoch 2015.0 (Note G1)   (pos.eq.dec;meta.main)
GLON166.7966 deg Approximate Galactic longitude at epoch 2015.0 (Note G1)   (pos.galactic.lon)
GLAT-28.0535 deg Approximate Galactic latitude at epoch 2015.0 (Note G1)   (pos.galactic.lat)
E(J-Ks) 0.08 mag [0.00,0.26] E(J-Ks) reddening (Note G2)   (phot.color.excess)
E(B-V) 0.12 mag [0.00,0.43] E(B-V) reddening (Note G3)   (phot.color.excess)
Rv 3.38   [2.01,4.12] Rv total-to-selective extinction ratio (Note G4)   (phys.absorption.gal;arith.ratio)
Av 0.41 mag [0.00,1.24] Av interstellar extinction (Note G5)   (phys.absorption)

SimbadSimbad  ask the Simbad data-base about this object (meta.ref.url)
_RA.icrs053.6511 deg (i) Right Ascension (ICRS, epoch 2000) computed by CDS (pos.eq.ra)
_DE.icrs+20.5990 deg (i) Declination (ICRS, epoch 2000) computed by CDS (pos.eq.dec)
  
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