14 Sagittae

14 Sagittae
Observation data
Epoch J2000      Equinox J2000
Constellation Aquila
Right ascension 20h 03m 30.01519s[1]
Declination +16° 01′ 52.5065″[1]
Apparent magnitude (V) 5.89[2]
Characteristics
Spectral type B9p HgMn[3]
U−B color index –0.44[2]
B−V color index –0.06[2]
Astrometry
Radial velocity (Rv)–21.7[4] km/s
Proper motion (μ) RA: +5.28[5] mas/yr
Dec.: –8.99[5] mas/yr
Parallax (π)4.9142 ± 0.0849 mas[1]
Distance660 ± 10 ly
(203 ± 4 pc)
Absolute magnitude (MV)−0.72[6]
Orbit[7]
Period (P)61.541 d
Eccentricity (e)0.49
Periastron epoch (T)2440799.01 JD
Argument of periastron (ω)
(secondary)		345°
Semi-amplitude (K1)
(primary)		4.2 km/s
Details
14 Sge A
Luminosity291.53[6] L☉
Surface gravity (log g)3.60[3] cgs
Temperature13,200[3] K
Rotational velocity (v sin i)7.0±0.5[8] km/s
Other designations
14 Sge, BD+15° 4033, GC 27812, HD 190229, HIP 98754, HR 7664, SAO 105615[9]
Database references
SIMBADdata

14 Sagittae is a binary star[7] system in the equatorial constellation of Aquila.[10] 14 Sagittae is the Flamsteed designation. It appears as a sixth magnitude star, near the lower limit of visibility to the naked eye, having an apparent visual magnitude of 5.89.[2] The system is located 660 light years away, as determined from its annual parallax shift of 4.91 mas.[1] It is moving closer to the Earth with a heliocentric radial velocity of –22 km/s.[4]

This is a single-lined spectroscopic binary with an orbital period of 61.5 days and an eccentricity of 0.49.[7] The visible component is a chemically peculiar mercury-manganese star[11] with a stellar classification of B9p HgMn.[3] It is narrow-lined with a projected rotational velocity of 7 km/s.[8] The star is radiating 292[6] times the Sun's luminosity from its photosphere at an effective temperature of 13,200 K.[3]

  1. ^ a b c d Cite error: The named reference GaiaDR2 was invoked but never defined (see the help page).
  2. ^ a b c d Cite error: The named reference Fernie1983 was invoked but never defined (see the help page).
  3. ^ a b c d e Cite error: The named reference Smith1993 was invoked but never defined (see the help page).
  4. ^ a b Cite error: The named reference gcsrv was invoked but never defined (see the help page).
  5. ^ a b Cite error: The named reference vanLeeuwen2007 was invoked but never defined (see the help page).
  6. ^ a b c Cite error: The named reference Anderson2012 was invoked but never defined (see the help page).
  7. ^ a b c Cite error: The named reference Pourbaix2004 was invoked but never defined (see the help page).
  8. ^ a b Cite error: The named reference Adelman2017 was invoked but never defined (see the help page).
  9. ^ Cite error: The named reference SIMBAD was invoked but never defined (see the help page).
  10. ^ Cite error: The named reference Hoffleit was invoked but never defined (see the help page).
  11. ^ Cite error: The named reference Adelman1988 was invoked but never defined (see the help page).