HD 215152

HD 215152
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Aquarius
Right ascension 22h 43m 21.3028s[1]
Declination −06° 24′ 02.953″[1]
Apparent magnitude (V) 8.13[2]
Characteristics
Spectral type K3 V[3]
B−V color index 0.968[4]
Astrometry
Radial velocity (Rv)−13.88±0.13[1] km/s
Proper motion (μ) RA: −154.095[1] mas/yr
Dec.: −289.915[1] mas/yr
Parallax (π)46.3324 ± 0.0238 mas[1]
Distance70.39 ± 0.04 ly
(21.58 ± 0.01 pc)
Details
Mass0.756±0.016[5] M☉
Surface gravity (log g)4.26±0.15[5] cgs
Temperature4,803±52[5] K
Metallicity [Fe/H]−0.08±0.02[5] dex
Rotation36.5±1.6 d[6]
Rotational velocity (v sin i)3.35[4] km/s
Age5.207±4.069[5] Gyr
Other designations
BD−07° 5839, GJ 4291, HD 215152, HIP 112190, SAO 146275, 2MASS J22432131-0624025[7]
Database references
SIMBADdata

HD 215152 is a star in the zodiac constellation of Aquarius. It has an apparent visual magnitude of 8.13,[2] meaning it is too faint to be seen with the naked eye. Parallax measurements provide distance estimates of around 70 light years.[1] The star has a relatively high proper motion,[7] moving across the sky at an estimated 0.328 arc seconds per year along a position angle of 205°.[8]

A 2015 survey ruled out the existence of any additional stellar companions at projected distances from 6 to 145 astronomical units.[9]

This star has a stellar classification of K3 V,[3] which indicates that it is an ordinary K-type main sequence star. Based upon observation of regular variations in chromospheric activity, it has a rotation period of 36.5±1.6 days.[10] Stellar models give an estimated mass of around 76% of the Sun.[5] It has a slightly lower metallicity than the Sun,[5] and thus has a lower abundance of elements other than hydrogen and helium. The effective temperature of the stellar atmosphere is about 4,803 K, giving it the orange-hued glow of an ordinary K-type star.[11]

HD 215152 is a candidate for possessing a debris disk—a circumstellar disk of orbiting dust and debris. This finding was made through the detection of an infrared excess at a wavelength of 70 μm by the Spitzer Space Telescope. The detection has a 3σ level of certainty.[12]

  1. ^ a b c d e f g Cite error: The named reference GaiaDR3 was invoked but never defined (see the help page).
  2. ^ a b Cite error: The named reference Santos2013 was invoked but never defined (see the help page).
  3. ^ a b Cite error: The named reference GrayRO was invoked but never defined (see the help page).
  4. ^ a b Cite error: The named reference MartínezArnáiz2010 was invoked but never defined (see the help page).
  5. ^ a b c d e f g Cite error: The named reference aa_555_A150 was invoked but never defined (see the help page).
  6. ^ Cite error: The named reference Suárez_Mascareño_et_al_2015 was invoked but never defined (see the help page).
  7. ^ a b Cite error: The named reference SIMBAD was invoked but never defined (see the help page).
  8. ^ Cite error: The named reference aj107_6_2240 was invoked but never defined (see the help page).
  9. ^ Cite error: The named reference Mugrauer_Ginski_2015 was invoked but never defined (see the help page).
  10. ^ Cite error: The named reference mnras452_3_2745 was invoked but never defined (see the help page).
  11. ^ Cite error: The named reference csiro was invoked but never defined (see the help page).
  12. ^ Cite error: The named reference apjl710_1_L26 was invoked but never defined (see the help page).