HD 185018

HD 185018 is supergiant[3] star in the equatorial constellation of Aquila.

HD 185018

Observation data Epoch J2000      Equinox J2000
Constellation	Aquila
Right ascension	19^h 36^m 52.45249^s[1]
Declination	+11° 16′ 23.5331″[1]
Apparent magnitude (V)	5.978[2]
Characteristics
Spectral type	G0Ib[3]
B−V color index	+0.881[2]
Astrometry
Radial velocity (Rv)	+0.50[4] km/s
Proper motion (μ)	RA: 9.19[1] mas/yr Dec.: 2.32[1] mas/yr
Parallax (π)	2.69 ± 0.42[1] mas
Distance	approx. 1,200 ly (approx. 370 pc)
Details
Mass	5.5[3] M☉
Luminosity	586[5] L☉
Surface gravity (log g)	2.06[3] cgs
Temperature	5,550[3] K
Rotational velocity (v sin i)	10[3] km/s
Other designations
BD+10° 3984, HD 185018, HIP 96481, HR 7456, SAO 105045.
Database references
SIMBAD	data

References

1. van Leeuwen, F. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics. 474 (2): 653–664. arXiv:0708.1752. Bibcode:2007A&A...474..653V. doi:10.1051/0004-6361:20078357.
2. Haggkvist, L.; Oja, T. (1970), Results of BV photometry 1969-70 (Uppsala refractor) (Private Communication), Bibcode:1970Priv.........0H Private Communication.
3. Lyubimkov, Leonid S.; et al. (November 2012), "Lithium abundance in atmospheres of F- and G-type supergiants and bright giants", Monthly Notices of the Royal Astronomical Society, 427 (1): 11–26, arXiv:1212.6057, Bibcode:2012MNRAS.427...11L, doi:10.1111/j.1365-2966.2012.21617.x
4. Gontcharov, G. A. (November 2006). "Pulkovo Compilation of Radial Velocities for 35 495 Hipparcos stars in a common system". Astronomy Letters. 32 (11): 759–771. arXiv:1606.08053. Bibcode:2006AstL...32..759G. doi:10.1134/S1063773706110065.
5. McDonald, I.; et al. (2012), "Fundamental Parameters and Infrared Excesses of Hipparcos Stars", Monthly Notices of the Royal Astronomical Society, 427 (1): 343–57, arXiv:1208.2037, Bibcode:2012MNRAS.427..343M, doi:10.1111/j.1365-2966.2012.21873.x

External links

• HR 7456
• Image HD 185018