HD 199942

HD 199942
Observation data
Epoch J2000      Equinox J2000
Constellation Equuleus
Right ascension 21h 00m 03.95s
Declination 07° 30′ 58.2″
Apparent magnitude (V) 5.98
Characteristics
Spectral type A6Vp[1]
B−V color index 0.28[2]
Variable type None
Astrometry
Radial velocity (Rv)-26.20 ± 999.00[2] km/s
Proper motion (μ) RA: 40.70 ± 1.50[2] mas/yr
Dec.: 12.40 ± 1.50[2] mas/yr
Parallax (π)13.19 ± 0.64[2] mas
Distance235.523465704[3] ly
(72.12[1] pc)
Absolute magnitude (MV)1.69
Details
Mass1.8[1] M☉
Radius1.6[1] R☉
Luminosity9[1] L☉
Temperature7800[1] K
Metallicity [Fe/H]n/a dex
Age2.2 Gyr
Other designations
5 G. Equulei, HIP103652, HR8038

HD 199942 (HR 8038) is an A-type main sequence star in the constellation of Equuleus. At 235.2 light years away, this star shines dimly at an apparent magnitude of 5.98.

Galactic Orbit

HD 199942 is a double star system, which is moving through the galaxy at a speed of 30.3km/s.[2] Its galactic orbit carry it somewhere between 25100-22000 light years from the galactic core, and it'll come at its closest to the Sun 2.1 million years from now, shining at an apparent magnitude of 4.49 at a distance of 124 light years.[2]

See also

References

  1. ↑ 1.0 1.1 1.2 1.3 1.4 1.5 "HIP 103652", Wolfram Alpha, retrieved 2012-08-20
  2. ↑ 2.0 2.1 2.2 2.3 2.4 2.5 2.6 "HR 8038, a white main-sequence star in Equuleus", Ashland Astronomy Studio, retrieved 2012-08-20
  3. ↑ "HIP: 103652", Astronomy Launchpad, retrieved 2012-08-27

External links