HD 107914
HD 107914
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| 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[4] mas/yr Dec.: –0.02[4] mas/yr |
| Parallax (π) | 12.77 ± 0.46 mas |
| Distance | 255 ± 9 ly (78 ± 3 pc) |
| Other designations | |
CCDM J12242-3855AB, CD−38° 7710, HIP 60503, HD 107914, SAO 203431 | |
| Database references | |
| SIMBAD | data |
HD 107914 is a binary star in the constellation Centaurus, with an estimated distance of 255.5 light-years (78.3 pc)[5] from the Solar System. The primary has a stellar classification of A7-8 III, making it a giant star.
Measurement of the proper motion of this system show that it has a low transverse velocity relative to the Sun. For this reason, it has been compared to the hypothetical "Nemesis" star since it may pass through the Oort cloud in the future.[5] The star is too far away to be a companion to the Sun. However, preliminary measurements of the H-alpha line in the star's spectrum show a radial velocity in the range from –13 to +3 km/s. (This result was obtained by M. Muterspaugh and M. Williamson at a robotic spectroscopic telescope in Arizona.[6]) Such values for the radial velocity are too small to produce a likely collision course with the Solar System. For example, if Vr = –10 km/s, then the distance from the Sun to HD 107914 at closest approach will be about 5.2 ly (1.6 pc).
References[edit]
^ abcdef "CCDM J12242-3855. Vizier detailed page". Vizier. Centre de Données astronomiques de Strasbourg. Retrieved 2010-04-13..mw-parser-output cite.citation{font-style:inherit}.mw-parser-output q{quotes:"""""""'""'"}.mw-parser-output code.cs1-code{color:inherit;background:inherit;border:inherit;padding:inherit}.mw-parser-output .cs1-lock-free a{background:url("//upload.wikimedia.org/wikipedia/commons/thumb/6/65/Lock-green.svg/9px-Lock-green.svg.png")no-repeat;background-position:right .1em center}.mw-parser-output .cs1-lock-limited a,.mw-parser-output .cs1-lock-registration a{background:url("//upload.wikimedia.org/wikipedia/commons/thumb/d/d6/Lock-gray-alt-2.svg/9px-Lock-gray-alt-2.svg.png")no-repeat;background-position:right .1em center}.mw-parser-output .cs1-lock-subscription a{background:url("//upload.wikimedia.org/wikipedia/commons/thumb/a/aa/Lock-red-alt-2.svg/9px-Lock-red-alt-2.svg.png")no-repeat;background-position:right .1em center}.mw-parser-output .cs1-subscription,.mw-parser-output .cs1-registration{color:#555}.mw-parser-output .cs1-subscription span,.mw-parser-output .cs1-registration span{border-bottom:1px dotted;cursor:help}.mw-parser-output .cs1-hidden-error{display:none;font-size:100%}.mw-parser-output .cs1-visible-error{font-size:100%}.mw-parser-output .cs1-subscription,.mw-parser-output .cs1-registration,.mw-parser-output .cs1-format{font-size:95%}.mw-parser-output .cs1-kern-left,.mw-parser-output .cs1-kern-wl-left{padding-left:0.2em}.mw-parser-output .cs1-kern-right,.mw-parser-output .cs1-kern-wl-right{padding-right:0.2em}
^ "CCDM J12242-3855AB". 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.
^ ab "Detailed description of I/311". Hipparcos. Centre de Données astronomiques de Strasbourg. Retrieved 2010-04-13.
^ ab 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.; Williamson M. H. (2007). "The Tennessee State University Automatic Spectroscopic Telescope: Data Processing and Velocity Variation of Cool Giants". Publications of the Astronomical Society of the Pacific. 119: 886–897. Bibcode:2007PASP..119..886E. doi:10.1086/521231.
Categories:
- Double stars
- Centaurus (constellation)
- A-type giants
- Durchmusterung objects
- Henry Draper Catalogue objects
- Hipparcos objects
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