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=127998
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ColumnValue  Explain   (UCD)
_RAJ200004 50 13.512 "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+17 42 06.48 "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)
_RAB195004 47 19.516 "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+17 37 00.10 "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)
_Glon182.157868 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-16.807435 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)
127998recno 127998  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)

Source3406506719018584576  Source ID (Cat. I/337) (meta.id;meta.main)
HIP 22485   Hipparcos (Cat. I/311) identifier (meta.id)
RA_ICRS072.5563 deg (i) Approximate right ascension (ICRS) at epoch 2015.0 (Note G1)   (pos.eq.ra;meta.main)
DE_ICRS+17.7018 deg (i) Approximate declination (ICRS) at epoch 2015.0 (Note G1)   (pos.eq.dec;meta.main)
GLON182.1579 deg Approximate Galactic longitude at epoch 2015.0 (Note G1)   (pos.galactic.lon)
GLAT-16.8075 deg Approximate Galactic latitude at epoch 2015.0 (Note G1)   (pos.galactic.lat)
E(J-Ks) 0.17 mag [0.00,0.26] E(J-Ks) reddening (Note G2)   (phot.color.excess)
E(B-V) 0.28 mag [0.00,0.43] E(B-V) reddening (Note G3)   (phot.color.excess)
Rv 2.94   [2.01,4.12] Rv total-to-selective extinction ratio (Note G4)   (phys.absorption.gal;arith.ratio)
Av 0.83 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.icrs072.5563 deg (i) Right Ascension (ICRS, epoch 2000) computed by CDS (pos.eq.ra)
_DE.icrs+17.7018 deg (i) Declination (ICRS, epoch 2000) computed by CDS (pos.eq.dec)
  
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