| An editor has nominated this article for deletion. You are welcome to participate in the deletion discussion, which will decide whether or not to retain it.Feel free to improve the article, but do not remove this notice before the discussion is closed. For more information, see the guide to deletion. Find sources: "HD 138573" – news · newspapers · books · scholar · JSTOR%5B%5BWikipedia%3AArticles+for+deletion%2FHD+138573+%282nd+nomination%29%5D%5DAFD |
 | The topic of this article may not meet Misplaced Pages's notability guideline for astronomical objects. Please help to demonstrate the notability of the topic by citing reliable secondary sources that are independent of the topic and provide significant coverage of it beyond a mere trivial mention. If notability cannot be shown, the article is likely to be merged, redirected, or deleted. Find sources: "HD 138573" – news · newspapers · books · scholar · JSTOR (September 2017) (Learn how and when to remove this message) |
| Observation data Epoch J2000 Equinox J2000 | |
|---|---|
| Constellation | Serpens |
| Right ascension | 15 32 43.65 |
| Declination | +10° 58′ 05.9″ |
| Apparent magnitude (V) | 7.215 |
| Characteristics | |
| Spectral type | G5& IV-V |
| B−V color index | 0.656 |
| Astrometry | |
| Distance | 30.24 pc |
| Absolute magnitude (MV) | 4.82 |
| Details | |
| Surface gravity (log g) | 4.42±0.01 cgs |
| Temperature | 5,757±10 K |
| Metallicity | 0.00±0.01 |
| Age | 7.1+4.2 −4.5 Gyr |
| Other designations | |
| BD+11° 2816, HIP 76114, SAO 101603 | |
| Database references | |
| SIMBAD | data |
HD 138573 is a G-type main-sequence star in the constellation Serpens, class G5IV-V, roughly 100.8 light-years from Earth (30.912 parsecs). Though a G-type star like the Sun, a 2005 study found that it is not a solar twin as HD 138573 has a much lower mass, lower metallicity, and is much older age than the Sun at 5.6 billion years old. HD 138573 is otherwise close to the Sun's characteristics and could be classed as a Solar analog.
Mahdi et al. (2016) named the star the best solar twin candidate out of their dataset of around 2,800 candidates.
See also
Sun comparison
Chart compares the Sun to HD 138573.
| Identifier
|
J2000 Coordinates
|
Distance (ly)
|
Stellar Class
|
Temperature (K)
|
Metallicity (dex)
|
Age (Gyr)
|
Notes
| |
|---|---|---|---|---|---|---|---|---|
| Right ascension
|
Declination
| |||||||
| Sun
|
—
|
—
|
0.00
|
G2V
|
5,778
|
+0.00
|
4.6
|
|
| HD 138573
|
15 32 43.7 | +10° 58′ 06″
− |
101
− |
G5IV-V
− |
5,689
− |
−0.10
− |
5.6
− |
− |
References
- ^ "HD 138573". sky-map.org. 2004. Retrieved 2016-06-23.
- ^ "HD 138573". SIMBAD. Centre de données astronomiques de Strasbourg. Retrieved 2016-06-23.
- ^ Mahdi, D.; Soubiran, C.; Blanco-Cuaresma, S.; Chemin, L. (March 2016). "Solar twins in the ELODIE archive". Astronomy & Astrophysics. 587: A131. arXiv:1601.01599. Bibcode:2016A&A...587A.131M. doi:10.1051/0004-6361/201527472. S2CID 119205608.
- Datson, Juliet; Flynn, Chris; Portinari, Laura (2012). "New solar twins and the metallicity and temperature scales of the Geneva Copenhagen Survey". Monthly Notices of the Royal Astronomical Society. 426 (426): 484. arXiv:1207.4610. Bibcode:2012MNRAS.426..484D. doi:10.1111/j.1365-2966.2012.21730.x. S2CID 118378819.
- Williams, D.R. (2004). "Sun Fact Sheet". NASA. Retrieved 2009-06-23.
- HD 138573 at SIMBAD - Ids - Bibliography - Image.
| Constellation of Serpens | |||||||||||||
|---|---|---|---|---|---|---|---|---|---|---|---|---|---|
| Stars |
| ||||||||||||
| |||||||||||||
| Star clusters |
| ||||||||||||
| Nebulae |
| ||||||||||||
| Galaxies |
| ||||||||||||
| |||||||||||||
| |||||||||||||
 Category | |||||||||||||