VizieR

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VizieR

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II/354/hipext HIP and TGAS stars reddening and extinction (Gontcharov+ 2018)
E(J-Ks), E(B-V), Rv and Av for Hipparcos stars, not in Gaia DR1 TGAS (19259 rows)
  recno=12830
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ColumnValue  Explain   (UCD)
_RAJ200016 08 04.536 "h:m:s" Right ascension (FK5, Equinox=J2000.0) at Epoch=J1991.25 (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 02 49.20 "d:m:s" Declination (FK5, Equinox=J2000.0) at Epoch=J1991.25 (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)
_RAB195016 05 48.868 "h:m:s" Right ascension (FK4, Equinox=B1950.0) at Epoch=J1991.25 (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 10 43.62 "d:m:s" Declination (FK4, Equinox=B1950.0) at Epoch=J1991.25 (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)
_Glon031.016660 deg Galactic longitude at Epoch=J1991.25 (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+43.639371 deg Galactic latitude at Epoch=J1991.25 (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)
12830recno 12830  Record number assigned by the VizieR team. Should Not be used for identification. (meta.record)

HIP 79043  Hipparcos (Cat. I/311) identifier (meta.id)
RA_ICRS242.0189 deg (i) Approximate right ascension (ICRS) at epoch 1991.25 (Note G6)   (pos.eq.ra;meta.main)
DE_ICRS+17.0470 deg (i) Approximate declination (ICRS) at epoch 1991.25 (Note G6)   (pos.eq.dec;meta.main)
GLON 31.0167 deg Approximate Galactic longitude at epoch 1991.25 (Note G6)   (pos.galactic.lon)
GLAT 43.6393 deg Approximate Galactic latitude at epoch 1991.25 (Note G6)   (pos.galactic.lat)
E(J-Ks) 0.03 mag [0.00,0.24] E(J-Ks) reddening (Note G7)   (phot.color.excess)
E(B-V) 0.05 mag [0.00,0.40] E(B-V) reddening (Note G3)   (phot.color.excess)
Rv 3.46   [2.16,4.07] Rv total-to-selective extinction ratio (Note G4)   (phys.absorption.gal;arith.ratio)
Av 0.19 mag [0.00,1.15] Av interstellar extinction (Note G5)   (phys.absorption)

SimbadSimbad  ask the Simbad data-base about this object (meta.ref.url)
_RA.icrs242.0189 deg (i) Right Ascension (ICRS, epoch 2000) computed by CDS (pos.eq.ra)
_DE.icrs+17.0470 deg (i) Declination (ICRS, epoch 2000) computed by CDS (pos.eq.dec)
  
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