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Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Ara |
Right ascension | 16h 40m 50.48446s [1] |
Declination | −60° 26′ 47.2030″ [1] |
Apparent magnitude (V) | 6.18 [2] |
Characteristics | |
Spectral type | F6V [3] |
Apparent magnitude (B) | 6.660 |
Apparent magnitude (V) | 6.223 |
Apparent magnitude (J) | 5.217 |
Apparent magnitude (H) | 4.969 |
Apparent magnitude (K) | 4.886 |
B−V color index | +0.17 [2] |
Astrometry | |
Radial velocity (Rv) | 3.9±0.2 [4] km/s |
Proper motion (μ) | RA: +59.02 [1] mas/yr Dec.: –74.20 [1] mas/yr |
Parallax (π) | 31.92 ± 0.53 mas [1] |
Distance | 102 ± 2 ly (31.3 ± 0.5 pc) |
Details | |
HD 149837 A | |
Mass | 1.25 [5] M☉ |
Luminosity | 2.8 [6] L☉ |
Surface gravity (log g) | 4.16 [3] cgs |
Temperature | 6,354 [3] K |
Metallicity [Fe/H] | −0.08 [3] dex |
Age | 2.7 [7] Gyr |
HD 149837 B | |
Mass | 0.79 [5] M☉ |
Other designations | |
Database references | |
SIMBAD | data |
HD 149837 is a binary star in the southern constellation of Ara.
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Pi1 Ursae Minoris is a common proper motion binary star system in the northern circumpolar constellation of Ursa Minor. The pair have apparent visual magnitudes of +6.58 and +7.31, with a combined magnitude of 6.1. They are located about 71 light years from the Sun. The two have an angular separation of 31.4 arc seconds, which corresponds to a physical separation of about 680 AU, and orbit each other with a period of about 13,100 years.
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HD 200375 is a binary star system in the equatorial constellation of Aquarius. Their orbit does not yet have a unique solution available.
HD 208177 is a double star system in the equatorial constellation of Aquarius. They are faintly visible to the naked eye with an apparent magnitude of 6.20. The pair have an angular separation of 19.113″. The primary component is an evolved subgiant star with a stellar classification of F5IV. It has an estimated 163% of the Sun's mass and is about 1.7 billion years old
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HD 188405 is a binary star in the equatorial constellation of Aquila. The pair have an orbital period of roughly 425 years and an angular separation of 1.085″.
HD 153370 is binary star in the southern constellation of Ara.
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HD 130917 is a single star in the northern constellation of Boötes. It is an A-type main sequence star with a stellar classification of A4V. At an apparent magnitude of 5.80, it is visible to the naked eye.
HD 131473 is a binary star system in the northern constellation of Boötes. The primary is an F-type subgiant with a stellar classification of F4IV, while its companion is a G-type subgiant with a stellar classification of G1IV.
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