Rho1 Sagittarii
Observation data Epoch J2000 Equinox J2000 | |
---|---|
Constellation | Sagittarius |
Right ascension | 19h 21m 40.35942s[1] |
Declination | −17° 50′ 49.9168″[1] |
Apparent magnitude (V) | 3.93[2] |
Characteristics | |
Spectral type | A9IV[3] |
U−B color index | +0.14[2] |
B−V color index | +0.22[2] |
Variable type | δ Sct[4] |
Astrometry | |
Radial velocity (Rv) | +1.20[5] km/s |
Proper motion (μ) | RA: -25.87[1] mas/yr Dec.: +21.46[1] mas/yr |
Parallax (π) | 25.69 ± 0.19[1] mas |
Distance | 127.0 ± 0.9 ly (38.9 ± 0.3 pc) |
Absolute magnitude (MV) | 0.97[6] |
Details | |
Mass | 1.91[7] M☉ |
Radius | 3.1[7] R☉ |
Luminosity | 33.98[6] L☉ |
Surface gravity (log g) | 3.89[8] cgs |
Temperature | 7,804[8] K |
Metallicity [Fe/H] | -0.02[9] dex |
Rotational velocity (v sin i) | 68[10] km/s |
Other designations | |
Database references | |
SIMBAD | data |
Rho1 Sagittarii (ρ1 Sgr) is a class A9IV[3] (white subgiant) star in the constellation Sagittarius. Its apparent magnitude is 3.93[2] and it is approximately 127.0 light years away based on parallax.[1]
It is a low amplitude Delta Scuti variable, ranging from 3.94 to 3.90 magnitude with a period of 0.05 days.[4]
References
- 1 2 3 4 5 6 Van Leeuwen, F. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics. 474 (2): 653. Bibcode:2007A&A...474..653V. arXiv:0708.1752 . doi:10.1051/0004-6361:20078357. Vizier catalog entry
- 1 2 3 4 Ducati, J. R. (2002). "VizieR Online Data Catalog: Catalogue of Stellar Photometry in Johnson's 11-color system". CDS/ADC Collection of Electronic Catalogues. 2237. Bibcode:2002yCat.2237....0D.
- 1 2 Gray, R. O.; Corbally, C. J.; Garrison, R. F.; McFadden, M. T.; Bubar, E. J.; McGahee, C. E.; O'Donoghue, A. A.; Knox, E. R. (2006). "Contributions to the Nearby Stars (NStars) Project: Spectroscopy of Stars Earlier than M0 within 40 pc--The Southern Sample". The Astronomical Journal. 132: 161. Bibcode:2006AJ....132..161G. arXiv:astro-ph/0603770 . doi:10.1086/504637.
- 1 2 Samus, N. N.; Durlevich, O. V.; et al. (2009). "VizieR Online Data Catalog: General Catalogue of Variable Stars (Samus+ 2007-2013)". VizieR On-line Data Catalog: B/gcvs. Originally published in: 2009yCat....102025S. 1. Bibcode:2009yCat....1.2025S.
- ↑ Wilson, R. E. (1953). General Catalogue of Stellar Radial Velocities. Carnegie Institution for Science. Bibcode:1953GCRV..C......0W. LCCN 54001336.
- 1 2 Anderson, E.; Francis, Ch. (2012). "XHIP: An extended hipparcos compilation". Astronomy Letters. 38 (5): 331. Bibcode:2012AstL...38..331A. arXiv:1108.4971 . doi:10.1134/S1063773712050015. Vizier catalog entry
- 1 2 Allende Prieto, C.; Lambert, D. L. (1999). "Fundamental parameters of nearby stars from the comparison with evolutionary calculations: Masses, radii and effective temperatures". Astronomy and Astrophysics. 352: 555. Bibcode:1999A&A...352..555A. arXiv:astro-ph/9911002 . Vizier catalog entry
- 1 2 David, Trevor J.; Hillenbrand, Lynne A. (2015). "The Ages of Early-Type Stars: Strömgren Photometric Methods Calibrated, Validated, Tested, and Applied to Hosts and Prospective Hosts of Directly Imaged Exoplanets". The Astrophysical Journal. 804 (2): 146. Bibcode:2015ApJ...804..146D. arXiv:1501.03154 . doi:10.1088/0004-637X/804/2/146. Vizier catalog entry
- ↑ Gontcharov, G. A. (2012). "Dependence of kinematics on the age of stars in the solar neighborhood". Astronomy Letters. 38 (12): 771. Bibcode:2012AstL...38..771G. arXiv:1606.08814 . doi:10.1134/S1063773712120031. Vizier catalog entry
- ↑ Hoffleit, D.; Warren, W. H. (1995). "VizieR Online Data Catalog: Bright Star Catalogue, 5th Revised Ed. (Hoffleit+, 1991)". VizieR On-line Data Catalog: V/50. Originally published in: 1964BS....C......0H. 5050. Bibcode:1995yCat.5050....0H.
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