HD 185018

Last updated
HD 185018
Observation data
Epoch J2000       Equinox J2000
Constellation Aquila
Right ascension 19h 36m 52.45500s [1]
Declination +11° 16 23.5086 [1]
Apparent magnitude  (V)5.978 [2]
Characteristics
Spectral type G0Ib [3]
B−V color index +0.881±0.015 [4]
Astrometry
Radial velocity (Rv)+0.50±0.79 [1]  km/s
Proper motion (μ)RA: 7.929 [1]   mas/yr
Dec.: 2.719 [1]   mas/yr
Parallax (π)3.2148 ± 0.0705  mas [1]
Distance 1,010 ± 20  ly
(311 ± 7  pc)
Absolute magnitude  (MV)−1.81 [4]
Details
Mass 5.5 [3]   M
Radius 25.17+0.37
−0.72
[1]   R
Luminosity 395±11 [1]   L
Surface gravity (log g)2.06 [3]   cgs
Temperature 5,131+75
−38
[1]   K
Metallicity [Fe/H]−0.16 [5]   dex
Rotational velocity (v sin i)10 [3]  km/s
Other designations
BD+10°3984, GC  27120, HD  185018, HIP  96481, HR  7456, SAO  105045, PPM  136605, WDS J19369+1116A [6]
Database references
SIMBAD data

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

Related Research Articles

<span class="mw-page-title-main">Nu Aquilae</span> Star in the constellation Aquila

Nu Aquilae, Latinized from ν Aquilae, is the Bayer designation for a double star in the constellation of Aquila that lies close to the celestial equator. It has an apparent visual magnitude of 4.72 and so is visible to the naked eye. Based upon an annual parallax shift of only 0.8752 mas, it is believed to lie approximately 3,700 light-years from Earth. The variable star NU Aquilae has a similar-looking designation but is a separate and unrelated object.

22 Andromedae, abbreviated 22 And, is a single star in the constellation Andromeda. 22 Andromedae is the Flamsteed designation. It is visible to the naked eye with an apparent visual magnitude of 5.04. The distance to 22 And can be estimated from its annual parallax shift of just 2.2 mas, which shows it to be around 1,500 light years away. It is moving closer to the Earth with a heliocentric radial velocity of −8.2 km/s.

35 Aquarii, also known by its Flamsteed designation, is a single star located approximately 2,200 light years away from the Sun in the zodiac constellation of Aquarius. It is visible to the naked eye as a faint, blue-white star with an apparent visual magnitude of 5.80. This object is moving closer to Earth with a heliocentric radial velocity of −7 km/s, and is suspected to be a runaway star, potentially ejected from an open cluster due to a binary–binary interaction.

<span class="mw-page-title-main">19 Aurigae</span> Star in the constellation Auriga

19 Aurigae is a single star located approximately 3,800 light years away from the Sun in the northern constellation Auriga. It is visible to the naked eye as a faint, white-hued star with an apparent visual magnitude of 5.05. The star is moving closer to the Earth with a heliocentric radial velocity of 4.3 km/s.

<span class="mw-page-title-main">Nu Persei</span> Yellow-white hued star in the constellation Perseus

ν Persei, Latinized as Nu Persei, is a single star and a suspected variable in the northern constellation of Perseus. It has a yellow-white hue and is visible to the naked eye with an apparent visual magnitude of 3.80. This object is located approximately 560 light-years from the Sun based on parallax but is drifting closer with a radial velocity of −12 km/s.

<span class="mw-page-title-main">Beta Sagittae</span> Star in the constellation Sagitta

Beta Sagittae, Latinized from β Sagittae, is a single star in the northern constellation of Sagitta. It is a faint star but visible to the naked eye with an apparent visual magnitude of 4.38. Based upon an annual parallax shift of 7.7237 mas as seen from the Gaia satellite, it is located 420 light years from the Sun. The star is moving closer to the Sun with a radial velocity of −22 km/s.

<span class="mw-page-title-main">41 Cygni</span> Star in the constellation Cygnus

41 Cygni is a single star in the northern constellation of Cygnus, located near the southern border with Vulpecula. It is visible to the naked eye as a faint, yellow-white hued star with an apparent visual magnitude of 4.02. The star lies at a distance of around 770 light years from the Sun, based on parallax, and is drifting closer with a radial velocity of −18 km/s.

63 Cygni is a single star in the northern constellation of Cygnus, located around 1,030 light years away from Sun. It is visible to the naked eye as an orange-hued star with an apparent visual magnitude of 4.56. 63 Cyg is moving closer to the Earth with a heliocentric radial velocity of −26 km/s.

HD 189276 is a single star in the northern constellation Cygnus, positioned near the northern constellation border with Draco. It has an orange hue and is faintly visible to the naked eye with an apparent visual magnitude of 4.98. The star is located at a distance of approximately 820 light years from the Sun based on parallax, and it has an absolute magnitude of −2.25. It is drifting further away with a radial velocity of +4 km/s. The star has a high peculiar velocity of 38.5+1.8
−2.2
 km/s
and thus is a probable runaway star.

<span class="mw-page-title-main">45 Draconis</span> Star in the constellation Draco

45 Draconis is a single star located in the northern circumpolar constellation of Draco, around 3,500 light years from the Earth. 45 Draconis is the Flamsteed designation, while it has the Bayer designation of d Draconis. This object is visible to the naked eye as a faint, yellow-white hued star with an apparent visual magnitude of 4.78. Radial velocity measurements indicate it is moving closer to the Sun at the rate of −12.5 km/s.

145 G. Canis Majoris is a single K giant or supergiant star in the southern constellation of Canis Major. This star is Gould's 145th of Canis Major in his Uranometria Argentina. Kostjuk erroneously lists it as simply "145 CMa". SIMBAD follows this error in its object query result as "* 145 CMa – Star".

<span class="mw-page-title-main">F Hydrae</span> Star in the constellation Hydra

F Hydrae, also known as HD 74395, is a star in the constellation Hydra with an apparent magnitude is 4.64. It was catalogued as 31 Monocerotis, but this name is now rarely used since the star is now within the boundaries of Hydra. It is a low mass yellow supergiant around a thousand times brighter than the sun and five times as massive.

1 Lupi is a solitary giant star in the southern constellation of Lupus. It has the Bayer designation i Lupi; 1 Lupi is the Flamsteed designation. The apparent visual magnitude is 4.90, which indicates it is faintly visible to the naked eye. Based on parallax measurements, this star is approximately 1,800 light-years from the Sun. It is moving closer to the Earth with a heliocentric radial velocity of −23 km/s.

<span class="mw-page-title-main">9 Pegasi</span> Star in the constellation Pegasus

9 Pegasi is a supergiant star in the constellation Pegasus. Its apparent magnitude is 4.35.

<span class="mw-page-title-main">20 Puppis</span> Star in the constellation Puppis

20 Puppis is a solitary star in the southern constellation of Puppis. It is visible to the naked eye as a faint, yellow-hued star with an apparent visual magnitude of 4.99. The star lies approximately 990 light years away from the Sun based on parallax. It is receding from the Earth with a heliocentric radial velocity of +16.8 km/s.

HR 4180 is a double star with components HD 92449 and HD 92463 in the southern constellation of Vela. They are probably members of a binary star system. HR 4180 can be viewed with the naked eye, having an apparent visual magnitude of 4.29. Based upon the annual parallax shift of the two stars it is located approximately 780 light years from the Sun. The system is moving further from the Earth with a heliocentric radial velocity of +20 km/s.

HD 85622 is a binary star system in the southern constellation of Vela. It is visible to the naked eye with an apparent visual magnitude of 4.58. The distance to HD 85622 can be estimated from its annual parallax shift of 4.3 mas, yielding a value of 750 light years. It is moving further from the Earth with a heliocentric radial velocity of +8 km/s.

<span class="mw-page-title-main">35 Cygni</span> Binary star in the constellation Cygnus

35 Cygni is a spectroscopic binary star in the constellation Cygnus. Its apparent magnitude is 5.18. Located around 1,000 parsecs (3,300 ly) distant, its primary is a yellow supergiant of spectral type F6Ib, a massive star that has used up its core hydrogen and is now fusing heavier elements.

<span class="mw-page-title-main">HD 25291</span> Star in the constellation Camelopardalis

HD 25291, also known as HR 1242, is a solitary, yellowish-white hued star located in the northern circumpolar constellation Camelopardalis. It has an apparent magnitude of 5.12, making it one of the brighter members of this generally faint constellation. The object is relatively far at a distant of approximately 2,100 light years but is drifting closer with a heliocentric radial velocity of −20.3 km/s.

<span class="mw-page-title-main">HD 40091</span> Star in the constellation Columba

HD 40091, also known as HR 2082, is a solitary star located in the southern constellation Columba, the dove. It has an apparent magnitude of 5.54, making it faintly visible to the naked eye under ideal conditions. Based on parallax measurements from the Gaia spacecraft, the object is estimated to be 501 light years distant. However, it is rapidly receding with a high heliocentric radial velocity of 114 km/s.

References

  1. 1 2 3 4 5 6 7 8 9 Brown, A. G. A.; et al. (Gaia collaboration) (August 2018). "Gaia Data Release 2: Summary of the contents and survey properties". Astronomy & Astrophysics . 616. A1. arXiv: 1804.09365 . Bibcode: 2018A&A...616A...1G . doi: 10.1051/0004-6361/201833051 . Gaia DR2 record for this source at VizieR.
  2. Haggkvist, L.; Oja, T. (1970), "Results of BV photometry 1969-70 (Uppsala refractor)", Private Communication (Private Communication), Bibcode:1970Priv.........0H Private Communication.
  3. 1 2 3 4 5 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 , S2CID   119191810
  4. 1 2 Anderson, E.; Francis, Ch. (2012), "XHIP: An extended hipparcos compilation", Astronomy Letters, 38 (5): 331, arXiv: 1108.4971 , Bibcode:2012AstL...38..331A, doi:10.1134/S1063773712050015, S2CID   119257644.
  5. Lyubimkov, L. S.; et al. (October 2019), "Oxygen abundance and the N/C versus N/O relation for AFG supergiants and bright giants", Monthly Notices of the Royal Astronomical Society, 489 (2): 1533–1542, arXiv: 1907.04634 , Bibcode:2019MNRAS.489.1533L, doi: 10.1093/mnras/stz2285
  6. "HD 185018". SIMBAD . Centre de données astronomiques de Strasbourg . Retrieved 2021-10-14.