Nu1 Sagittarii
| Observation data Epoch J2000.0 Equinox J2000.0 (ICRS) | |
|---|---|
| Constellation | Sagittarius |
| Right ascension | 18h 54m 10.17695s |
| Declination | −22° 44′ 41.4247″ |
| Apparent magnitude (V) | +4.86 |
| Characteristics | |
| Spectral type | G2/K1 Ib/II + B9.2p |
| U−B color index | +1.34 |
| B−V color index | +1.43 |
| Astrometry | |
| Radial velocity (Rv) | −11.57 km/s |
| Proper motion (μ) | RA: +4.291 mas/yr Dec.: −7.786 mas/yr |
| Parallax (π) | 2.3170±0.2139 mas |
| Distance | 1,400 ± 100 ly (430 ± 40 pc) |
| Absolute magnitude (MV) | −3.91 |
| Details | |
| Radius | 101 R☉ |
| Luminosity | 3,464 L☉ |
| Temperature | 4,401 K |
| Other designations | |
| Ainalrami, ν1 Sgr, 32 Sgr, BD−22°4907, HD 174974, HIP 92761, HR 7116, SAO 187426, WDS J18542-2245 | |
| Database references | |
| SIMBAD | data |
Nu1 Sagittarii (ν1 Sagittarii, abbreviated Nu1 Sgr, ν1 Sgr) is a triple star system about 1,100 light-years from Earth. Its three components are designated Nu1 Sagittarii A (officially named Ainalrami /ɛnəlˈreɪmi/, the traditional name for the system), B and C. A and B themselves form a spectroscopic binary. The system is 0.11 degree north of the ecliptic.