Astronomy:K2-415
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Short description: Red Dwarf Star
| Observation data Equinox J2000.0]] (ICRS) | |
|---|---|
| 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[2] mas/yr Dec.: 192.574[2] mas/yr |
| Parallax (π) | 45.8625 ± 0.0196[2] mas |
| 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]
Planetary system
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⊕ |
References
- ↑ "Finding the constellation which contains given sky coordinates". 2 August 2008. http://djm.cc/constellation.html.
- ↑ 2.0 2.1 2.2 2.3 Vallenari, A. et al. (2022). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy & Astrophysics. doi:10.1051/0004-6361/202243940 Gaia DR3 record for this source at VizieR.
- ↑ 3.0 3.1 3.2 3.3 3.4 3.5 3.6 3.7 3.8 3.9 Hirano, Teruyuki et al. (March 2023). "An Earth-sized Planet around an M5 Dwarf Star at 22 pc". The Astronomical Journal 165 (3): 131. doi:10.3847/1538-3881/acb7e1. Bibcode: 2023AJ....165..131H.
- ↑ "G 41-26". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=G+41-26.
- ↑ Alaeva, Liliia (2023-02-06). "Earth's twin is found in the nearest planetary system" (in en-US). https://universemagazine.com/en/found-an-exoplanet-the-size-of-earth-at-a-distance-of-72-light-years/.
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