Pi Andromeda is a spectrally binary [5] star in the constellation Andromeda . Visible to the naked eye, the apparent magnitude is 4.4 [6] . It is located 600 light-years from Earth.
| Pi Andromeda | |||
|---|---|---|---|
| Double star | |||
| Observational data ( Age J2000 ) | |||
| Type of | spectrally double | ||
| Right ascension | |||
| Declination | |||
| Distance | |||
| Visible magnitude ( V ) | |||
| Constellation | Andromeda | ||
| Astrometry | |||
| Radial velocity ( R v ) | 8.20 km / s | ||
| Own movement (μ) | RA: Dec: | ||
| Parallax (π) | 5.45 ± 0.31 mas | ||
| Characteristics | |||
| Spectral class | B5 | ||
| physical characteristics | |||
| Temperature | |||
| Metallicity | |||
| |||
| Database Information | |||
| SIMBAD | |||
The object is characterized as a blue and white ( class B ) dwarf of the main sequence . The orbital period of the system is 143.6 days, and the eccentricity is 0.56.
Notes
- ↑ 1 2 3 4 5 6 7 Collaboration G. Gaia DR2 - 2018 .-- T. 1345. - P. 0.
- ↑ 1 2 Leeuwen F. v. Validation of the new Hipparcos reduction // Astron. Astrophys. - EDP Sciences , 2007. - Vol. 474, Iss. 2. - P. 653–664. - ISSN 0004-6361 ; 0365-0138 ; 1432-0746 ; 1286-4846 - doi: 10.1051 / 0004-6361: 20078357 - arXiv: 0708.1752
- ↑ Ducati J. R. Catalog of Stellar Photometry in Johnson's 11-color system - 2002. - T. 2237. - S. –1.
- ↑ 1 2 Ph. Prugniel, I. Vauglin, M. Koleva The atmospheric parameters and spectral interpolator for the MILES stars // Astron. Astrophys. - EDP Sciences , 2011. - Vol. 531. - P. 165–165. - ISSN 0004-6361 ; 0365-0138 ; 1432-0746 ; 1286-4846 - doi: 10.1051 / 0004-6361 / 201116769 - arXiv: 1104.4952
- ↑ Eggleton, PP; Tokovinin, AA A catalog of multiplicity among bright stellar systems (Eng.) // Monthly Notices of the Royal Astronomical Society : journal. - Oxford University Press , 2008 .-- September ( vol. 389 , no. 2 ). - P. 869-879 . - DOI : 10.1111 / j.1365-2966.2008.13596.x . - . - arXiv : 0806.2878 .
- ↑ Johnson, HL; Iriarte, B .; Mitchell, RI & Wisniewskj, WZ (1966), "UBVRIJKL photometry of the bright stars", Communications of the Lunar and Planetary Laboratory T. 4 (99)