LP 993-115
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Eridanus |
| Right ascension | 02h 45m 10.7263s[1] |
| Declination | −43° 44′ 31.642″[1] |
| Apparent magnitude (V) | +12.34[1] |
| Characteristics | |
| LP 993-115 | |
| Spectral type | M3.5Ve[2] |
| LP 993-116 | |
| Spectral type | M4.0Ve |
| Astrometry | |
| LP 993-115 | |
| Parallax (π) | 89.62 ± 1.73[2] mas |
| Distance | 36.4 ± 0.7 ly (11.2 ± 0.2 pc) |
| Absolute magnitude (MV) | 12.09[2] |
| LP 993-116 | |
| Parallax (π) | 84.12 ± 2.08[2] mas |
| Distance | 38.8 ± 1.0 ly (11.9 ± 0.3 pc) |
| Absolute magnitude (MV) | 12.40[2] |
| Position (relative to LP 993-115)[2] | |
| Component | LP 993-116 |
| Epoch of observation | J2000 |
| Angular distance | 44.8″ |
| Position angle | 60.9° |
| Position (relative to LP 993-116A)[2] | |
| Component | LP 993-116B |
| Epoch of observation | J2000 |
| Angular distance | 0.257″ |
| Position angle | 214.6° |
| Other designations | |
| LP 993-115: CD–44° 836A, LTT 1339, CCDM J02452-4344A | |
| LP 993-116: CD–44° 836B, L 369-44, LTT 1341, CCDM J02452-4344B[3] | |
| Database references | |
| SIMBAD | LP 993-115/6 |
| LP 993-115 | |
| LP 993-116 | |
| ARICNS | LP 993-115 |
| LP 993-116 | |
LP 993-115 is a star system in the constellation Eridanus. It is located about 35 light-year away, and does not belong to any moving group.[2]
The primary component of the system, LP 993-115, is a red dwarf star with a spectral type of M3.5Ve, indicating emission lines in its spectrum. The secondary component of the system, LP 993-116, is a pair of red dwarfs orbiting each other, making this a triple star system. X-ray activity has been detected from LP 993-116. Confusingly, the secondary component is sometimes also referred to as LP 993-115BC.[2]
References[edit]
- ↑ 1.0 1.1 1.2 Zacharias, N. (2012). "The fourth US Naval Observatory CCD Astrograph Catalog (UCAC4)". VizieR On-line Data Catalog. Bibcode:2012yCat.1322....0Z.
- ↑ 2.0 2.1 2.2 2.3 2.4 2.5 2.6 2.7 2.8 Riedel, Adric R.; Finch, Charlie T.; Henry, Todd J.; Subasavage, John P.; Jao, Wei-Chun; Malo, Lison; Rodriguez, David R.; White, Russel J.; Gies, Douglas R.; Dieterich, Sergio B.; Winters, Jennifer G.; Davison, Cassy L.; Nelan, Edmund P.; Blunt, Sarah C.; Cruz, Kelle L.; Rice, Emily L.; Ianna, Philip A. (1 April 2014). "The Solar Neighborhood. XXXIII. Parallax Results from the CTIOPI 0.9 m Program: Trigonometric Parallaxes of Nearby Low-mass Active and Young Systems" (PDF). The Astronomical Journal. 147 (4): 85. arXiv:1401.0722. Bibcode:2014AJ....147...85R. doi:10.1088/0004-6256/147/4/85. Retrieved 20 January 2017.
- ↑ "LP 993-116". SIMBAD. Centre de données astronomiques de Strasbourg.
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