HD 107914
| Observation data Epoch J2000.0 Equinox J2000.0 | |
|---|---|
| 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 | |
HD 107914 is a binary star in the constellation Centaurus at ≈78.3 pc from the Sun classified as a white A7/8-giant.[2] 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 (measured by M. Muterspaugh and M. Williamson at a robotic spectroscopic telescope in Arizona, cf.[6]). Such values of the radial velocity are too small for the collision course with the solar system. For example, if km/s, then the distance from the Sun to HD 107914 at its closest approach will be ≈1.6 pc in linear approximation.
References
- ^ a b c d e f "CCDM J12242-3855. Vizier detailed page". Vizier. Centre de Données astronomiques de Strasbourg. Retrieved 2010-04-13.
- ^ a b "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 "Detailed description of I/311". Hipparcos. 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". arXiv:1003.5308 [astro-ph.SR].
- ^ Eaton, J. A. (2007). "The Tennessee State University Automatic Spectroscopic Telescope: Data Processing and Velocity Variation of Cool Giants". PASP. 119: 886–897. Bibcode:2007PASP..119..886E. doi:10.1086/521231.
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