Gliese 693

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Coordinates: Jupiter and moon.png 17h 46m 32.4s, −57° 19′ 09″

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 [1]   mas
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
Red pog.png
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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Gliese 687 Star in the constellation Draco

Gliese 687, or GJ 687 (Gliese–Jahreiß 687) is a red dwarf in the constellation Draco. This is one of the closest stars to the Sun and lies at an approximate distance of less than 15 light years. Even though it is close by, it has a magnitude of about 9, so it can only be seen through a moderately sized telescope. Gliese 687 has a high proper motion, advancing 1.304 arcseconds per year across the sky. It has a net relative velocity of about 39 km/s. It is known to have a Neptune-mass planet. Old books and articles refer to it as Argelander Oeltzen 17415.

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Gliese 268 Star 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.

Stein 2051 Star in the constellation Camelopardalis

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Innes' star is an M3.5-type red dwarf, located in constellation Carina. It has around 35% of the mass of the Sun, yet only 1.1% of its luminosity, and an estimated surface temperature of 3,323 K.

Gliese 180 Star in the constellation Eridanus

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.

Gliese 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 constellation Orion at 18.45 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.

Gliese 908 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.

Gliese 555 Star in the constellation Libra

Gliese 555 is a red dwarf star of spectral type M4.0V, located in constellation Libra at 20.2 light-years from Earth.

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.

LHS 1140 Star in the constellation Cetus

LHS 1140 is a red dwarf in the constellation of Cetus. Based on its stellar properties, it is thought to be about 41 light-years away from the Sun. 'LHS' refers to the Luyten Half-Second Catalogue of stars with proper motions exceeding half a second of arc annually. The star is over 5 billion years old and has 15% of the mass of the Sun. LHS 1140's rotational period is 130 days. No flares have been observed.

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. 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.
  3. 1 2 Perryman; et al. (1997). "HIP 86990". The Hipparcos and Tycho Catalogues.
  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).
  5. Luyten, Willem Jacob (1979). "LHS 454". LHS Catalogue, 2nd Edition.
  6. Luyten, Willem Jacob (1979). "NLTT 45375". NLTT Catalogue.
  7. Van Altena W. F.; Lee J. T.; Hoffleit E. D. (1995). "GCTP 4040". The General Catalogue of Trigonometric Stellar Parallaxes (Fourth ed.).
  8. Perryman; et al. (1997). "HIP 86990". The Hipparcos and Tycho Catalogues.