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Gliese 829
Observation data
Epoch J2000.0       Equinox J2000.0 ( ICRS)
Constellation Pegasus
Right ascension 21h 29m 36.81225s [1]
Declination +17° 38′ 35.8542″ [1]
Apparent magnitude (V) 10.35 [2]
Characteristics
Spectral type M3.0Ve [3]
U−B color index +1.31 [2]
B−V color index +1.61 [2]
Astrometry
Radial velocity (Rv)−25.0 [4] km/s
Proper motion (μ) RA: +1007.13 [1]  mas/ yr
Dec.: +377.27 [1]  mas/ yr
Parallax (π)147.4958 ± 0.0257  mas [5]
Distance22.113 ± 0.004  ly
(6.780 ± 0.001  pc)
Orbit [6]
Period (P)53.221±0.004 d
Eccentricity (e)0.374±0.004
Periastron epoch (T)48980.2±0.2 JD
Argument of periastron (ω)
(secondary)		300±1°
Semi-amplitude (K1)
(primary)		18.7±0.1 km/s
Semi-amplitude (K2)
(secondary)		18.7±0.1 km/s
Details
Surface gravity (log g)5.0 [3]  cgs
Temperature3,400 [3]  K
Metallicity [Fe/H]−0.13 [7]  dex
Other designations
HIP 106106, Ross 775. [8]
Database references
SIMBAD data
ARICNS data

Gliese 829 is a double-lined spectroscopic binary [6] system of two red dwarf stars in the constellation of Pegasus. They have a high proper motion of 1.08  arc seconds per year along a position angle of +69.58°. [9] Based upon parallax measurements, the stars are at a distance of about 22  light years from the Sun. [1] The system will make its closest approach to the Sun around 91,000 years from now when it achieves a perihelion distance of 17.65 ly (5.410 pc). [4]

Characteristics

The primary star has a temp of 3400 K. It is an M3.0Ve star with a B-V color index of 1.61 and it is also called Ross 775. It has an app. mag. of 10.35.

References

  1. ^ a b c d e van Leeuwen, F. (2007), "Validation of the new Hipparcos reduction", Astronomy and Astrophysics, 474 (2): 653–664, arXiv: 0708.1752, Bibcode: 2007A&A...474..653V, doi: 10.1051/0004-6361:20078357, S2CID  18759600.
  2. ^ a b c Ianna, P. A.; Whitman, W. R. (April 1984), "Parallaxes and proper motions from the McCormick Observatory List 45", Astronomical Journal, 89: 568–570, Bibcode: 1984AJ.....89..568I, doi: 10.1086/113550.
  3. ^ a b c Lépine, Sébastien; et al. (2013), "A Spectroscopic Catalog of the Brightest (J < 9) M Dwarfs in the Northern Sky", The Astronomical Journal, 145 (4): 102, arXiv: 1206.5991, Bibcode: 2013AJ....145..102L, doi: 10.1088/0004-6256/145/4/102, S2CID  117144290.
  4. ^ a b Bailer-Jones, C. A. L. (March 2015), "Close encounters of the stellar kind", Astronomy & Astrophysics, 575: 13, arXiv: 1412.3648, Bibcode: 2015A&A...575A..35B, doi: 10.1051/0004-6361/201425221, S2CID  59039482, A35.
  5. ^ Brown, A. G. A.; et al. (Gaia collaboration) (2021). "Gaia Early Data Release 3: Summary of the contents and survey properties". Astronomy & Astrophysics. 649: A1. arXiv: 2012.01533. Bibcode: 2021A&A...649A...1G. doi: 10.1051/0004-6361/202039657. S2CID  227254300. (Erratum:  doi: 10.1051/0004-6361/202039657e). Gaia EDR3 record for this source at VizieR.
  6. ^ a b Delfosse, Xavier; et al. (April 1999), "New neighbours. I. 13 new companions to nearby M dwarfs", Astronomy and Astrophysics, 344: 897–910, arXiv: astro-ph/9812008, Bibcode: 1999A&A...344..897D.
  7. ^ Rojas-Ayala, Bárbara; et al. (April 2012). "Metallicity and Temperature Indicators in M Dwarf K-band Spectra: Testing New and Updated Calibrations with Observations of 133 Solar Neighborhood M Dwarfs" (PDF). The Astrophysical Journal. 748 (2): 93. arXiv: 1112.4567. Bibcode: 2012ApJ...748...93R. doi: 10.1088/0004-637X/748/2/93. S2CID  41902340. Archived (PDF) from the original on 2021-01-29. Retrieved 2018-09-29.
  8. ^ "Ross 775". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2016-10-25.{{ cite web}}: CS1 maint: postscript ( link)
  9. ^ Dawson, P. C.; De Robertis, M. M. (January 2005), "High Proper Motion Stars. IV. Radial Velocities of 166 Luyten Half-Second Stars", The Publications of the Astronomical Society of the Pacific, 117 (827): 1–12, Bibcode: 2005PASP..117....1D, doi: 10.1086/427790.
Retrieved from " https://en.wikipedia.org/?title=Gliese_829&oldid=1227759493"
From Wikipedia, the free encyclopedia
Gliese 829
Observation data
Epoch J2000.0       Equinox J2000.0 ( ICRS)
Constellation Pegasus
Right ascension 21h 29m 36.81225s [1]
Declination +17° 38′ 35.8542″ [1]
Apparent magnitude (V) 10.35 [2]
Characteristics
Spectral type M3.0Ve [3]
U−B color index +1.31 [2]
B−V color index +1.61 [2]
Astrometry
Radial velocity (Rv)−25.0 [4] km/s
Proper motion (μ) RA: +1007.13 [1]  mas/ yr
Dec.: +377.27 [1]  mas/ yr
Parallax (π)147.4958 ± 0.0257  mas [5]
Distance22.113 ± 0.004  ly
(6.780 ± 0.001  pc)
Orbit [6]
Period (P)53.221±0.004 d
Eccentricity (e)0.374±0.004
Periastron epoch (T)48980.2±0.2 JD
Argument of periastron (ω)
(secondary)		300±1°
Semi-amplitude (K1)
(primary)		18.7±0.1 km/s
Semi-amplitude (K2)
(secondary)		18.7±0.1 km/s
Details
Surface gravity (log g)5.0 [3]  cgs
Temperature3,400 [3]  K
Metallicity [Fe/H]−0.13 [7]  dex
Other designations
HIP 106106, Ross 775. [8]
Database references
SIMBAD data
ARICNS data

Gliese 829 is a double-lined spectroscopic binary [6] system of two red dwarf stars in the constellation of Pegasus. They have a high proper motion of 1.08  arc seconds per year along a position angle of +69.58°. [9] Based upon parallax measurements, the stars are at a distance of about 22  light years from the Sun. [1] The system will make its closest approach to the Sun around 91,000 years from now when it achieves a perihelion distance of 17.65 ly (5.410 pc). [4]

Characteristics

The primary star has a temp of 3400 K. It is an M3.0Ve star with a B-V color index of 1.61 and it is also called Ross 775. It has an app. mag. of 10.35.

References

  1. ^ a b c d e van Leeuwen, F. (2007), "Validation of the new Hipparcos reduction", Astronomy and Astrophysics, 474 (2): 653–664, arXiv: 0708.1752, Bibcode: 2007A&A...474..653V, doi: 10.1051/0004-6361:20078357, S2CID  18759600.
  2. ^ a b c Ianna, P. A.; Whitman, W. R. (April 1984), "Parallaxes and proper motions from the McCormick Observatory List 45", Astronomical Journal, 89: 568–570, Bibcode: 1984AJ.....89..568I, doi: 10.1086/113550.
  3. ^ a b c Lépine, Sébastien; et al. (2013), "A Spectroscopic Catalog of the Brightest (J < 9) M Dwarfs in the Northern Sky", The Astronomical Journal, 145 (4): 102, arXiv: 1206.5991, Bibcode: 2013AJ....145..102L, doi: 10.1088/0004-6256/145/4/102, S2CID  117144290.
  4. ^ a b Bailer-Jones, C. A. L. (March 2015), "Close encounters of the stellar kind", Astronomy & Astrophysics, 575: 13, arXiv: 1412.3648, Bibcode: 2015A&A...575A..35B, doi: 10.1051/0004-6361/201425221, S2CID  59039482, A35.
  5. ^ Brown, A. G. A.; et al. (Gaia collaboration) (2021). "Gaia Early Data Release 3: Summary of the contents and survey properties". Astronomy & Astrophysics. 649: A1. arXiv: 2012.01533. Bibcode: 2021A&A...649A...1G. doi: 10.1051/0004-6361/202039657. S2CID  227254300. (Erratum:  doi: 10.1051/0004-6361/202039657e). Gaia EDR3 record for this source at VizieR.
  6. ^ a b Delfosse, Xavier; et al. (April 1999), "New neighbours. I. 13 new companions to nearby M dwarfs", Astronomy and Astrophysics, 344: 897–910, arXiv: astro-ph/9812008, Bibcode: 1999A&A...344..897D.
  7. ^ Rojas-Ayala, Bárbara; et al. (April 2012). "Metallicity and Temperature Indicators in M Dwarf K-band Spectra: Testing New and Updated Calibrations with Observations of 133 Solar Neighborhood M Dwarfs" (PDF). The Astrophysical Journal. 748 (2): 93. arXiv: 1112.4567. Bibcode: 2012ApJ...748...93R. doi: 10.1088/0004-637X/748/2/93. S2CID  41902340. Archived (PDF) from the original on 2021-01-29. Retrieved 2018-09-29.
  8. ^ "Ross 775". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2016-10-25.{{ cite web}}: CS1 maint: postscript ( link)
  9. ^ Dawson, P. C.; De Robertis, M. M. (January 2005), "High Proper Motion Stars. IV. Radial Velocities of 166 Luyten Half-Second Stars", The Publications of the Astronomical Society of the Pacific, 117 (827): 1–12, Bibcode: 2005PASP..117....1D, doi: 10.1086/427790.
Retrieved from " https://en.wikipedia.org/?title=Gliese_829&oldid=1227759493"

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