Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Cancer [1] |
Right ascension | 09h 08m 48.85461s [2] |
Declination | +11° 51′ 41.1161″ [2] |
Apparent magnitude (V) | 15.330 [3] |
Characteristics | |
Evolutionary stage | Main sequence |
Spectral type | M5V [3] |
Apparent magnitude (V) | 15.330±0.027 [3] |
Apparent magnitude (G) | 13.7957±0.0004 [3] |
Apparent magnitude (J) | 10.739±0.026 [3] |
Apparent magnitude (H) | 10.170±0.023 [3] |
Apparent magnitude (K) | 9.899±0.023 [3] |
Astrometry | |
Proper motion (μ) | RA: -458.503 mas/yr [2] Dec.: 192.574 mas/yr [2] |
Parallax (π) | 45.8625 ± 0.0196 mas [2] |
Distance | 71.12 ± 0.03 ly (21.804 ± 0.009 pc) |
Details [3] | |
Mass | 0.1635±0.0041 M☉ |
Radius | 0.1965±0.0058 R☉ |
Luminosity (bolometric) | 0.00351+0.00033 −0.00030 L☉ |
Surface gravity (log g) | 5.066±0.027 cgs |
Temperature | 3173±53 K |
Metallicity [Fe/H] | −0.13±0.18 dex |
Rotation | 4.26±0.12 d |
Rotational velocity (v sin i) | ~2.3 km/s |
Other designations | |
Database references | |
SIMBAD | data |
K2-415 is an M5 red dwarf star located 72 light-years from Earth. K2-415 has a mass that is 16% of the mass of the Sun. [5]
The star has one known planet orbiting it: K2-415b.
Companion (in order from star) | Mass | Semimajor axis (AU) | Orbital period (days) | Eccentricity | Inclination | Radius |
---|---|---|---|---|---|---|
b | 3.0±2.7 M🜨 | 0.0270±0.00023 | 4.0179694±0.0000027 | — | 89.32±0.41 ° | 1.015±0.051 R🜨 |
Ross 128 is a red dwarf in the equatorial zodiac constellation of Virgo, near β Virginis. The apparent magnitude of Ross 128 is 11.13, which is too faint to be seen with the unaided eye. Based upon parallax measurements, the distance of this star from Earth is 11.007 light-years, making it the twelfth closest stellar system to the Solar System. It was first cataloged in 1926 by American astronomer Frank Elmore Ross.
40 Eridani is a triple star system in the constellation of Eridanus, abbreviated 40 Eri. It has the Bayer designation Omicron2 Eridani, which is Latinized from ο2 Eridani and abbreviated Omicron2 Eri or ο2 Eri. Based on parallax measurements taken by the Gaia mission, it is about 16.3 light-years from the Sun.
HD 192310 is a star in the southern constellation of Capricornus. It is located in the solar neighborhood at a distance of 28.7 light-years, and is within the range of luminosity needed to be viewed from the Earth with the unaided eye. HD 192310 is suspected of being a variable star, but this is unconfirmed.
Pi Mensae, also known as HD 39091, is a yellow dwarf star in the constellation of Mensa. This star has a high proper motion. The apparent magnitude is 5.67, which can be visible to the naked eye in exceptionally dark, clear skies. It is nearly 60 light-years away. The star is slightly larger than the Sun in terms of mass, size, luminosity, temperature and metallicity, and is about 730 million years younger. It hosts three known planets.
HD 8673 is a binary star in the northern constellation of Andromeda. It has an apparent magnitude and absolute magnitude of 6.34 and 3.56 respectively. Based upon an annual parallax shift of 26.2 mas, the system is located around 124.5 light years away. The system is moving further from the Earth with a heliocentric radial velocity of +19 km/s. A sub-stellar companion was detected in 2005; it could either be an exoplanet or a brown dwarf.
HD 162020 is a star in the southern constellation of Scorpius with a likely red dwarf companion. It has an apparent visual magnitude of 9.10, which is too faint to be visible to the naked eye. The distance to this system is 102 light-years based on stellar parallax. It is drifting closer to the Sun with a radial velocity of −27 km/s, and is predicted to come to within ~18 light-years in 1.1 million years.
HD 126614 is a trinary star system in the equatorial constellation of Virgo. The primary member, designated component A, is host to an exoplanetary companion. With an apparent visual magnitude of 8.81, it is too faint to be seen with the naked eye. The system is located at a distance of 239 light years from the Sun based on parallax measurements, but is drifting closer with a radial velocity of −33 km/s.
Gliese 179 is a small red dwarf star with an exoplanetary companion in the equatorial constellation of Orion. It is much too faint to be visible to the naked eye with an apparent visual magnitude of 11.94. The system is located at a distance of 40.5 light-years from the Sun based on parallax measurements, but is drifting closer with a radial velocity of –9 km/s. It is a high proper motion star, traversing the celestial sphere at an angular rate of 0.370″·yr−1.
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K2-28 is a metal rich M4-type main sequence star. One confirmed transiting exoplanet is known to orbit this star. There is another star 5.2 arcseconds to the north–east of K2-28 however this star has a different proper motion and is therefore physically unrelated and probably a background star.
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Wolf 1069 is a red dwarf star located 31.2 light-years away from the Solar System in the constellation of Cygnus. The star has 17% the mass and 18% the radius of the Sun, a temperature of 3,158 K, and a slow rotation period of 150–170 days. It hosts one known exoplanet called Wolf 1069 b which could possibly sustain life.
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K2-21, also known as EPIC 206011691, is a red dwarf star located 273 light-years away in the constellation Aquarius. It hosts two known exoplanets, discovered in 2015 by the transit method as part of Kepler's K2 mission. Both planets have significantly lower densities than Earth, indicating that they are not rocky planets and are better described as mini-Neptunes. The inner planet, K2-21b, is less dense than the outer planet, K2-21c.