HD 377 is a star located in the constellation Pisces about 257 light-years from us.
| HD 377 | |||
|---|---|---|---|
| Star | |||
| Observational data ( Age J2000.0 ) | |||
| Type of | Single star | ||
| Right ascension | |||
| Declination | |||
| Distance | 257.6 St. years (79 pc ) [1] | ||
| Visible magnitude ( V ) | 7.581 [1] | ||
| Constellation | Fish | ||
| Astrometry | |||
| Radial velocity ( R v ) | -3.9 [2] km / s | ||
| Own movement (μ) | RA: 88.02 [2] Dec: -1.31 [2] | ||
| Parallax (π) | 25.59 ± 0.69 [2] mas | ||
| Absolute magnitude (V) | 4,58 [1] | ||
| Characteristics | |||
| Spectral class | G2V [2] | ||
| Color Index ( B - V ) | 0.391 [1] | ||
| physical characteristics | |||
| Weight | 0.99 [1] M ☉ | ||
| Age | 8.2 billion [1] years | ||
| Temperature | |||
| Metallicity | [Fe / H] = - 0.02 [1] | ||
| |||
| Database Information | |||
| SIMBAD | data | ||
| Sources: [2] | |||
Features
HD 377 is a 7.581 magnitude star not visible to the naked eye. For the first time in astronomical literature, it is mentioned in the catalog of Henry Draper , published at the beginning of the 20th century . This is a yellow dwarf that has a mass equal to 0.99 mass of the Sun. [1] The age of the star is estimated at approximately 8.2 billion years. No planets have yet been detected in this system.
Notes
- ↑ 1 2 3 4 5 6 7 8 B. Nordström et al. The Geneva-Copenhagen survey of the Solar Neighborhood . A&A, Volume 418, Number 3 (May 2004). Date of treatment December 9, 2011. Archived on September 5, 2012.
- ↑ 1 2 3 4 5 6 SIMBAD (English) . - HD 377 in the SIMBAD database . Date of treatment December 9, 2011.
- ↑ 1 2 3 4 Gaia Data Release 2 - 2018.
- ↑ Aguilera-Gómez C., Ramírez I., Chanamé J. Lithium abundance patterns of late-F stars: an in-depth analysis of the lithium desert // Astron. Astrophys. - EDP Sciences , 2018 .-- Vol. 614. - P. A55. - ISSN 0004-6361 ; 0365-0138 ; 1432-0746 ; 1286-4846 - doi: 10.1051 / 0004-6361 / 201732209
See also
- List of Pisces Stars