15 Sagittae
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| Observation data Epoch J2000.0 Equinox J2000.0 |
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|---|---|
| Constellation | Sagitta |
| Right ascension | 20h 04m 06.22s |
| Declination | +17° 04' 12.6" |
| Apparent magnitude (V) | 5.8 |
| Distance | 57.7 ly (17.69 pc) |
| Spectral type | G1V |
| Other designations | |
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HR 7672, Gl 779, Hip 98819, HD 190406, BD+16 4121, SAO 105635, LHS 3515, LTT 15872, LFT 1517, Wolf 866.
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15 Sagittae (15 Sge) is a 6th magnitude star in the constellation Sagitta. In 2002, a brown dwarf, 15 Sge b, was discovered around 15 Sge.
[edit] 15 Sagittae B
| Orbital elements | ||
|---|---|---|
| Semi-major axis a: | 14 AU | |
| Eccentricity e: | 0 | |
| Orbital period P: | n/a d | |
| Inclination i: | n/a° | |
| Angular distance θ: | ? mas | |
| Longitude of periastron ω: |
n/a° | |
| Time of periastron τ: | n/a JD | |
| Semi-amplitude K: | ? m/s | |
| Physical characteristics | ||
| Mass: | 65 MJ | |
| Radius: | n/a RJ | |
| Density: | n/a kg/m3 | |
| Gravity: | ? g | |
| Temperature: | n/a K | |
| Discovery | ||
| Discovery date: | 2002 | |
| Discovery site: | ||
| Detection method(s): | ||
| Discoverer(s): | Michael, Liu et al. | |
| Other catalogue | ||
15 Sagittae B is a probably a substellar L dwarf of spectral class L6±1.5 orbiting primary 15 Sagittae A. Imaged by the Keck, 15 Sge B is the first brown dwarf candidate orbiting a sun-like star detected directly.
[edit] External links
- 15 Sagittae (15 Sagitta) (Extrasolar Visions)
- 15 Sagittae b (15 Sagitta b) (Extrasolar Visions)
- 15 Sagittae (SolStation)
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