Astronomy:HD 138573
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Short description: Star in the constellation of Serpens
| Observation data Equinox J2000.0]] (ICRS) | |
|---|---|
| Constellation | Serpens |
| Right ascension | 15h 32m 43.653s[1] |
| Declination | +10° 58′ 05.88″[1] |
| Apparent magnitude (V) | 7.22[2] |
| Characteristics | |
| Evolutionary stage | Main sequence[1] |
| Spectral type | G5 IV-V[3] |
| B−V color index | 0.656[4] |
| Astrometry | |
| Radial velocity (Rv) | −35.67±0.12[1] km/s |
| Proper motion (μ) | RA: −5.880[1] mas/yr Dec.: 158.609[1] mas/yr |
| Parallax (π) | 33.1373 ± 0.0240[1] mas |
| Distance | 98.43 ± 0.07 ly (30.18 ± 0.02 pc) |
| Absolute magnitude (MV) | 4.82[4] |
| Details | |
| Mass | 0.98±0.01[5] M☉ |
| Radius | 1.038±0.021[1] R☉ |
| Luminosity | 0.994±0.005[1] L☉ |
| Surface gravity (log g) | 4.41±0.01[5] cgs |
| Temperature | 5,740±3[5] K |
| Metallicity [Fe/H] | −0.024±0.003[5] dex |
| Rotational velocity (v sin i) | 1.30[6] km/s |
| Age | 6.50+0.29 −0.42[5] Gyr |
| Other designations | |
| Database references | |
| SIMBAD | data |
HD 138573 is a G-type main-sequence star in the constellation Serpens, class G5IV-V, roughly 98.4 light-years (30.2 parsecs) from Earth.[7] This is a solar twin, with nearly the same characteristics of the Sun.[4] It is more active than the Sun.[8]
Mahdi et al. (2016) named the star the best solar twin candidate out of their dataset of around 2,800 candidates.[4]
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 | [9] |
| HD 138573 | 15h 32m 43.7s | +10° 58′ 06″ | 98 | G5IV-V | 5,740 | −0.024 | 6.5 | [7][5][1] |
See also
References
- ↑ 1.0 1.1 1.2 1.3 1.4 1.5 1.6 1.7 1.8 Vallenari, A. et al. (2022). "Gaia Data Release 3. Summary of the content and survey properties". Astronomy & Astrophysics. doi:10.1051/0004-6361/202243940 Gaia DR3 record for this source at VizieR.
- ↑ Anderson, E.; Francis, Ch. (2012). "XHIP: An extended hipparcos compilation". Astronomy Letters 38 (5): 331. doi:10.1134/S1063773712050015. Bibcode: 2012AstL...38..331A.
- ↑ Harlan, E. A. (September 1969). "MK classifications for F- and G-type stars. I". Astronomical Journal 74: 916. doi:10.1086/110881. Bibcode: 1969AJ.....74..916H.
- ↑ 4.0 4.1 4.2 4.3 Mahdi, D.; Soubiran, C.; Blanco-Cuaresma, S.; Chemin, L. (March 2016). "Solar twins in the ELODIE archive". Astronomy & Astrophysics 587: A131. doi:10.1051/0004-6361/201527472. Bibcode: 2016A&A...587A.131M.
- ↑ 5.0 5.1 5.2 5.3 5.4 5.5 Martos, Giulia; Meléndez, Jorge; Rathsam, Anne; Carvalho-Silva, Gabriela (2023-04-21). "Metallicity and age effects on lithium depletion in solar analogues". Monthly Notices of the Royal Astronomical Society 522 (3): 3217–3226. doi:10.1093/mnras/stad1177. ISSN 0035-8711. Bibcode: 2023MNRAS.522.3217M.
- ↑ Llorente de Andrés, F. et al. (October 2021). "The evolution of lithium in FGK dwarf stars. The lithium-rotation connection and the Li desert". Astronomy and Astrophysics 654: A137. doi:10.1051/0004-6361/202141339. ISSN 0004-6361. Bibcode: 2021A&A...654A.137L.
- ↑ 7.0 7.1 7.2 "HD 138573". SIMBAD. Centre de données astronomiques de Strasbourg. http://simbad.u-strasbg.fr/simbad/sim-basic?Ident=HD+138573.
- ↑ Porto de Mello, G. F.; da Silva, R.; da Silva, L.; de Nader, R. V. (March 2014). "A photometric and spectroscopic survey of solar twin stars within 50 parsecs of the Sun. I. Atmospheric parameters and color similarity to the Sun". Astronomy & Astrophysics 563: id. A52. doi:10.1051/0004-6361/201322277. Bibcode: 2014A&A...563A..52P.
- ↑ Williams, D.R. (2004). "Sun Fact Sheet". NASA. http://nssdc.gsfc.nasa.gov/planetary/factsheet/sunfact.html. Retrieved 2009-06-23.
Coordinates: 
15h 32m 43.65s, +10° 58′ 05.8″
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