Gliese 693

Last updated
Gliese 693
Observation data
Epoch J2000.0        Equinox J2000.0
Constellation Pavo
Right ascension 17h 46m 32.4s
Declination −57° 19 09
Apparent magnitude  (V)+10.75
Characteristics
Spectral type M2.0V
Variable type Flare star
Astrometry
Radial velocity (Rv)115.00 km/s
Proper motion (μ)RA: −1116.909±0.046 [1]   mas/yr
Dec.: −1353.927±0.047 [1]   mas/yr
Parallax (π)169.8042 ± 0.0465  mas [1]
Distance 19.208 ± 0.005  ly
(5.889 ± 0.002  pc)
Absolute magnitude  (MV)+11.92
Details
Mass 0.26  M
Radius 0.30  R
Luminosity 0.0015  L
Temperature 3380  K
Other designations
GJ  693 [2] , HIP  86990 [3] , Ci  20 1061 [4] , L  205-128, LFT  1372, LHS  454 [5] , LPM  655, LTT  7067, NLTT  45375 [6] , PLX  4040 [7] , TYC  8737-2175-1 [8] , 2MASS J17463427-5719081, DENIS J174634.7-571903
Database references
SIMBAD data
Pavo constellation map.svg
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Gliese 693
Location of Gliese 693 in the constellation Pavo

Gliese 693 is a red dwarf star and a flare star of spectral type M2 located in the constellation Pavo, 18.95 light-years from Earth. [3]

Related Research Articles

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HD 101930, also known as Gliese 3683, is an orange hued star with an orbiting exoplanet located in the southern constellation Centaurus. It has an apparent magnitude of 8.21, making it faintly visible in binoculars but not to the naked eye. The system is located relatively close at a distance of 98 light years but is receding with a heliocentric radial velocity of 18.4 km/s. It has a relatively large proper motion, traversing the celestial sphere with an angular velocity of 0.320″·yr−1.

HD 114729 is a Sun-like star with an orbiting exoplanet in the southern constellation of Centaurus. Based on parallax measurements, it is located at a distance of 124 light years from the Sun. It is near the lower limit of visibility to the naked eye, having an apparent visual magnitude of 6.68 The system is drifting further away with a heliocentric radial velocity of 26.3 km/s. The system has a relatively high proper motion, traversing the celestial sphere at an angular rate of 0.373″·yr−1.

Gliese 1 is a red dwarf in the constellation Sculptor, which is found in the southern celestial hemisphere. It is one of the closest stars to the Sun, at a distance of 14.2 light years. Because of its proximity to the Earth it is a frequent object of study and much is known about its physical properties and composition. However, with an apparent magnitude of about 8.6 it is too faint to be seen with the naked eye.

<span class="mw-page-title-main">Gliese 440</span> Star in the constellation Musca

Gliese 440, also known as LP 145-141 or LAWD 37, is an isolated white dwarf located 15.1 light-years from the Solar System in the constellation Musca. It is the fourth closest known white dwarf to the Sun

HD 45652 is a star with an exoplanetary companion in the equatorial constellation of Monoceros. It was officially named Lusitânia on 17 December 2019, after the IAU100 press conference in Paris by the IAU. This star has an apparent visual magnitude of 8.10, making it an 8th magnitude star that is too dim to be visible to the naked eye. The system is located at a distance of 114 light-years from the Sun based on parallax measurements, but is drifting closer with a radial velocity of −5 km/s. It shows a high proper motion, traversing the celestial sphere at an angular rate of 0.188 arcsec yr−1.

HD 181433 is a star with a system of orbiting exoplanets located in the southern constellation of Pavo. With an apparent visual magnitude of 8.40, it is too faint to be visible to the naked eye. It lies at a distance of 88 light years from the Sun based on parallax measurements, and is drifting further away with a radial velocity of +40 km/s. The system shows a high proper motion, traversing the celestial sphere at an angular rate of 0.340 arcsec yr−1.

HIP 5158 is a star with a pair of orbiting substellar companions, located in the equatorial constellation of Cetus, the whale. It has the older designation CD-23 395, which is derived from the Cordoba Durchmusterung catalogue of southern stars. Based on parallax measurements, it is located 169 light years from the Sun. It has an absolute magnitude of 7.11, but at that distance the star has an apparent visual magnitude of 10.16, which is too dim to be visible to the naked eye. The system is receding with a radial velocity of 15.3 km/s, and it has a relatively high proper motion, traversing the celestial sphere at an angular rate of 0.205″·yr−1.

<span class="mw-page-title-main">Gliese 268</span> Binary star system in the constellation Auriga

Gliese 268 is a RS Canum Venaticorum variable star in the Auriga constellation. RS CVn variables are binary star systems with a strong magnetic field influenced by each star's rotation, which is accelerated by the tidal effects of the other star in the system. Gliese 268 in particular is composed of a binary system of two M-type dwarfs, or red dwarfs, and is one of the one hundred closest star systems to the Earth. The primary component of the system has an apparent magnitude of 12.05, and the secondary component an apparent magnitude of 12.45. Neither is visible to the naked eye from Earth.

<span class="mw-page-title-main">Stein 2051</span> Star in the constellation Camelopardalis

Stein 2051 is a nearby binary star system, containing a red dwarf and a degenerate star, located in constellation Camelopardalis at about 18 ly from Earth.

Gliese 163 is a faint red dwarf star with multiple exoplanetary companions in the southern constellation of Dorado. Other stellar catalog names for it include HIP 19394 and LHS 188. It is too faint to be visible to the naked eye, having an apparent visual magnitude of 11.79 and an absolute magnitude of 10.91. This system is located at a distance of 49.4 light-years from the Sun based on parallax measurements. Judging by its space velocity components, it is most likely a thick disk star.

Gliese 180, is a small red dwarf star in the equatorial constellation of Eridanus. It is invisible to the naked eye with an apparent visual magnitude of 10.9. The star is located at a distance of 39 light years from the Sun based on parallax, and is drifting closer with a radial velocity of −14.6 km/s. It has a high proper motion, traversing the sky at the rate of 0.765 arcseconds per year.

GJ 3323 is a nearby single star located in the equatorial constellation Eridanus, about 0.4° to the northwest of the naked eye star Psi Eridani. It is invisible to the naked eye with an apparent visual magnitude 12.20. Parallax measurements give a distance estimate of 17.5 light-years from the Sun. It is drifting further away with a radial velocity of +42.3 km/s. Roughly 104,000 years ago, the star is believed to have come to within 7.34 ± 0.16 light-years of the Solar System.

Gliese 251, also known as HIP 33226 or HD 265866, is a star located about 18 light years away from the Solar System. Located in the constellation of Gemini, it is the nearest star in this constellation. It is located near the boundary with Auriga, 49 arcminutes away from the bright star Theta Geminorum; due to its apparent magnitude of +9.89 it cannot be observed with the naked eye. The closest star to Gliese 251 is QY Aurigae, which is located 3.5 light years away.

Gliese 205 is a nearby red dwarf star of spectral type M1.5, located in the constellation Orion at a distance of 18.6 light-years from Earth.

LP 816-60 is a single red dwarf star of spectral type M4, located in constellation Capricornus at 18.6 light-years from Earth.

Gliese 588 is a nearby red dwarf star of spectral type M2.5, located in the constellation Lupus at 19.34 light-years from Earth. It emits a very stable light flux, with no detectable pulsations.

<span class="mw-page-title-main">Gliese 908</span> Star in the constellation Pisces

Gliese 908 is a red dwarf star, located in constellation Pisces at 19.3 light-years from Earth. It is a BY Draconis variable star with a variable star designation of BR Piscium. Its apparent magnitude varies between magnitude 8.93 and magnitude 9.03 as a result of starspots and varying chromospheric activity.

GJ 1128 is a red dwarf star of spectral type M4.0V, located in constellation Carina 21 light-years away from Earth. It is one of the closer stars to the Sun.

Gliese 877 is a red dwarf located in the southern constellation of Octans, near the boundary with Indus.

References

  1. 1 2 3 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.
  2. Gliese, W.; Jahreiß, H. (1991). "Gl 693". Preliminary Version of the Third Catalogue of Nearby Stars. Archived from the original on 2016-03-04. Retrieved 2015-09-21.
  3. 1 2 Perryman; et al. (1997). "HIP 86990". The Hipparcos and Tycho Catalogues. Archived from the original on 2016-03-04. Retrieved 2015-09-21.
  4. Porter, J. G.; Yowell, E. J.; Smith, E. S. (1930). "A catalogue of 1474 stars with proper motion exceeding four-tenths year". Publications of the Cincinnati Observatory. 20: 1–32. Bibcode:1930PCinO..20....1P. Page 24 (Ci 20 1061). Archived 2023-03-21 at the Wayback Machine
  5. Luyten, Willem Jacob (1979). "LHS 454". LHS Catalogue, 2nd Edition. Archived from the original on 2020-09-25. Retrieved 2015-10-15.
  6. Luyten, Willem Jacob (1979). "NLTT 45375". NLTT Catalogue. Archived from the original on 2016-03-04. Retrieved 2015-10-15.
  7. Van Altena W. F.; Lee J. T.; Hoffleit E. D. (1995). "GCTP 4040". The General Catalogue of Trigonometric Stellar Parallaxes (Fourth ed.). Archived from the original on 2016-03-04. Retrieved 2015-09-21.
  8. Perryman; et al. (1997). "HIP 86990". The Hipparcos and Tycho Catalogues. Archived from the original on 2016-03-04. Retrieved 2015-09-21.