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LP 993-115

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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
Distance36.4 ± 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
Distance38.8 ± 1.0 ly
(11.9 ± 0.3 pc)
Absolute magnitude (MV)12.40[2]
Position (relative to LP 993-115)[2]
ComponentLP 993-116
Epoch of observationJ2000
Angular distance44.8
Position angle60.9°
Position (relative to LP 993-116A)[2]
ComponentLP 993-116B
Epoch of observationJ2000
Angular distance0.257
Position angle214.6°
Other designations
CD–44° 836, WDS J02452-4344AB
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
SIMBADLP 993-115/6
LP 993-115
LP 993-116
ARICNSLP 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 | edit source]

  1. 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. 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.
  3. "LP 993-116". SIMBAD. Centre de données astronomiques de Strasbourg.


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