15 Andromedae

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15 Andromedae
Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Andromeda
Right ascension 23h 34m 37.54s[1]
Declination +40° 14′ 11.2″[1]
Apparent magnitude (V) 5.59
Spectral type A1 III[2]
U−B color index 0.08
B−V color index 0.1
Variable type Delta Scuti variable[citation needed]
Radial velocity (Rv)13 km/s
Proper motion (μ) RA: -17.74 ± 0.17[1] mas/yr
Dec.: -46.69 ± 0.15[1] mas/yr
Parallax (π)12.45 ± 0.26[1] mas
Distance262 ± 5 ly
(80 ± 2 pc)
Absolute magnitude (MV)+1.16±0.16[3]
Mass2.7[2] M
Luminosity27[2] L
Surface gravity (log g)3.90±0.03[3] cgs
Temperature9,225[2] K
Rotational velocity (v sin i)105[3] km/s
Age130[2] Myr
Other designations
V340 And, BD +39° 5114, FK5 1616, HD 221756, HIP 116354, HR 8947, SAO 73346.
Database references

15 Andromedae (abbreviated 15 And) is a star in the constellation Andromeda. 15 Andromedae is the Flamsteed designation. Its apparent magnitude is 5.55. Its estimated distance from the Earth is 233.47 light years.

This system has an excess emission of infrared radiation that suggests the presence of an orbiting disk of dust at a distance of around 50 AU from the host star.[2]


  1. ^ a b c d e van Leeuwen, F. (2007). "Validation of the new Hipparcos reduction". Astronomy and Astrophysics. 474 (2): 653–664. arXiv:0708.1752Freely accessible. Bibcode:2007A&A...474..653V. doi:10.1051/0004-6361:20078357. Archived from the original on 2016-04-02. Vizier catalog entry
  2. ^ a b c d e f Wyatt, M. C.; et al. (July 2007), "Steady State Evolution of Debris Disks around A Stars", The Astrophysical Journal, 663 (1): 365–382, arXiv:astro-ph/0703608Freely accessible, Bibcode:2007ApJ...663..365W, doi:10.1086/518404 
  3. ^ a b c Paunzen, E.; et al. (November 2002), "The status of Galactic field λ Bootis stars in the post-Hipparcos era", Monthly Notices of the Royal Astronomical Society, 336 (3): 1030–1042, arXiv:astro-ph/0207488Freely accessible, Bibcode:2002MNRAS.336.1030P, doi:10.1046/j.1365-8711.2002.05865.x. 

External links[edit]

Coordinates: Sky map 23h 34m 37.5s, 40° 14′ 11″