LP 768-500 is a star in the constellation Keith , which is located at a distance of about 59 light years from the Sun.
| LP 768-500 | |||
|---|---|---|---|
| Star | |||
 Comparative sizes of LP 768-500 and Texas . | |||
| Research history | |||
| Discoverer | Willem Leuten | ||
| opening date | 1963 | ||
| Observational data ( Age J2000.0 ) | |||
| Type of | Single star | ||
| Right ascension | |||
| Declination | |||
| Distance | 59 St. years (18 pc ) | ||
| Visible magnitude ( V ) | 17.66 [1] | ||
| Constellation | Whale | ||
| Astrometry | |||
| Own movement (ΞΌ) | RA: -120 [1] Dec: -1106 [1] | ||
| Parallax (Ο) | 14.0 Β± 9.2 [1] mas | ||
| Specifications | |||
| Spectral class | DA6.9 [1] | ||
| physical characteristics | |||
| Temperature | |||
| |||
| Database Information | |||
| SIMBAD | data | ||
| Sources: [1] | |||
Physical Characteristics
LP 768-500 was discovered in 1963 by the Dutch - American astronomer Willem Leuten in the study of stars with large proper motion [4] . It is a white dwarf with a size of about 1400 kilometers, which is slightly larger than the state of Texas (whose length is 1226 km). Despite its proximity to the solar system , the star is very dim. Its apparent magnitude is 17.66, so it is not visible to the naked eye. Like all white dwarfs, the LP 768-500 has an extremely high density - about 18 thousand tons per cubic inch. [5] The substance of a star consists of an electron-nuclear plasma, and its electronic component is a degenerate electron gas.
See also
- List of stars constellation China
Notes
- β 1 2 3 4 5 6 SIMBAD (English) . - LP 768-500 in the SIMBAD database . Date of treatment February 25, 2018.
- β 1 2 3 4 Gaia Data Release 2 - 2018.
- β A. Gianninas , P. Bergeron A spectroscopic survey and analysis of bright, hydrogen-rich white dwarfs // Astrophys. J. / E. Vishniac - IOP Publishing , 2011 .-- Vol. 743, Iss. 2. - P. 138. - ISSN 0004-637X ; 1538-4357 - doi: 10.1088 / 0004-637X / 743/2/138
- β Antal, M. Proper motion of the star LP 768-500 in Cetus . Bulletin of the Astronomical Institute of Czechoslovakia, vol. 17, p. 294 (1966). Date of treatment February 25, 2018.
- β Burnham, R, Jr. Burnham's Celestial Handbook. - New York: Dover Publications, 1978. - S. 1462.
Links
- Vorontsov-Velyaminov B.A. Chapter 7. Stars are distant Suns. // Essays on the universe. - M .: Science. The main edition of the physical and mathematical literature, 1980. - 672 p.
- LP 768-500 - Smallest Known Star? . Poyntsource.com. Date of treatment February 25, 2018.