HD 107914 is a binary star in the constellation Centaurus at ≈78.3 pc from the Sun. Its first component is a white A-type giant. This relatively nearby star has notoriously small proper motions making from it a potential Nemesis candidate to penetrate into the Oort cloud.[5] Preliminary measurements from the H-alpha line give the radial velocity in the range from -13 to +3 km/s (a private communication from M. Muterspaugh and M. Williamson, Tennessee State University). Such values of the radial velocity are too small for the collision course with the solar system. For example, if , then the distance from the Sun to HD 107914 at its closest approach will be ≈1.6 pc in linear approximation.
| Observation data Epoch J2000 Equinox | |
|---|---|
| Constellation | Centaurus |
| CCDM J12242-3855A | |
| Right ascension | 12h 24m 13.0s[1] |
| Declination | –38° 54′ 50″[1] |
| Apparent magnitude (V) | 7.0[1] |
| CCDM J12242-3855B | |
| Right ascension | 12h 24m 13.2s[1] |
| Declination | –38° 54′ 47″[1] |
| Apparent magnitude (V) | 12.8[1] |
| Characteristics | |
| Spectral type | A7/8III[2] |
| B−V color index | 0.272[3] |
| Astrometry | |
| Proper motion (μ) | RA: 0.55 [0.4] [4] mas/yr Dec.: -0.02 [0.3] [4] mas/yr |
| Parallax (π) | 12.77 ± 0.46 mas |
| Distance | 255 ± 9 ly (78 ± 3 pc) |
| Other designations | |
References
- ^ a b c d e f "CCDM J12242-3855. Vizier detailed page". Vizier. Centre de Données astronomiques de Strasbourg. Retrieved 2010-04-13.
- ^ "CCDM J12242-3855AB. Double or multiple star". SIMBAD. Centre de Données astronomiques de Strasbourg. Retrieved 2010-04-13.
- ^ "HIP 60503. Vizier detailed page". Vizier. Centre de Données astronomiques de Strasbourg. Retrieved 2010-04-13.
- ^ a b "HIP 60503. Vizier detailed page". Vizier. Centre de Données astronomiques de Strasbourg. Retrieved 2010-04-13.
- ^ Potemine, Igor Yu. (2010-04-13). "Giant Nemesis candidate HD 107914 / HIP 60503 for the perforation of Oort cloud". Cornell University Library. Retrieved 2010-04-13.