G 9-38

G 9-38, also known as EI Cancri and GJ 1116, is a binary star system consisting of two M-type stars.[10] At 17.04 light-years from the Sun, the system is relatively nearby.[11]

GJ 1116

Observation data Epoch J2000      Equinox J2000
Constellation	Cancer
Right ascension	08^h 58^m 15.194^s[1]
Declination	+19° 45′ 47.08″[1]
Apparent magnitude (V)	13.720[2]
Characteristics
Spectral type	M5.5 V[3]
Astrometry
Radial velocity (Rv)	13 ± 5[4] km/s
Proper motion (μ)	RA: −862.0[2] mas/yr Dec.: −54.0[2] mas/yr
Parallax (π)	191.3 ± 2.5[5] mas
Distance	17.0 ± 0.2 ly (5.23 ± 0.07 pc)
Other designations
EI Cnc, GJ 1116, WDS J08582+1945AB, G 9-38, G 47-14, G 41-11, LP 426-40, LTT 12343, PLX 2144.03, GSC 01397-01138, 2MASS J08581519+1945470
A: LHS 2076[6], NLTT 20638[7]
B: LHS 2077[8], NLTT 20637[9]
Database references
SIMBAD	The system
	A
	B

References

1. Cutri, R. M.; et al. (2003). "2MASS All-Sky Catalog of Point Sources". VizieR On-line Data Catalog. Bibcode:2003yCat.2246....0C.
2. Zacharias, N. (2012). "The fourth US Naval Observatory CCD Astrograph Catalog (UCAC4)". VizieR On-line Data Catalog. Bibcode:2012yCat.1322....0Z.
3. Henry, Todd J.; Walkowicz, Lucianne M.; Barto, Todd C.; Golimowski, David A. (2002). "The Solar Neighborhood. VI. New Southern Nearby Stars Identified by Optical Spectroscopy". The Astronomical Journal. 123 (4): 2002–2009. arXiv:astro-ph/0112496. Bibcode:2002AJ....123.2002H. doi:10.1086/339315.
4. "GJ 1116". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 30 January 2018.
5. Gliese, W.; Jahreiß, H. (1991). "GJ 1116". Preliminary Version of the Third Catalogue of Nearby Stars. Retrieved 2014-11-23.
6. Luyten, Willem Jacob (1979). "LHS 2076". LHS Catalogue, 2nd Edition.
7. Luyten, Willem Jacob (1979). "NLTT 20638". NLTT Catalogue.
8. Luyten, Willem Jacob (1979). "LHS 2077". LHS Catalogue, 2nd Edition.
9. Luyten, Willem Jacob (1979). "NLTT 20637". NLTT Catalogue.
10. Vizier query: Name=G* 1116, Centre de Données astronomiques de Strasbourg , accessed 30 December 2012.
11. Nearby Stars Catalog (NSC), Planetary Habitability Laboratory, University of Puerto Rico at Arecibo accessed 31 December 2012.

• Dittmann, Jason A.; Irwin, Jonathan M.; Charbonneau, David; Berta-Thompson, Zachory K. (2014). "Trigonometric Parallaxes for 1507 Nearby Mid-to-late M Dwarfs". The Astrophysical Journal. 784 (2): 156. arXiv:1312.3241. Bibcode:2014ApJ...784..156D. doi:10.1088/0004-637X/784/2/156. Table with parallaxes.