HD 173416

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HD 173416
Observation data
Epoch J2000      Equinox J2000
Constellation Lyra
Right ascension 18h 43m 36.110s[1]
Declination +36° 33′ 23.78″[1]
Apparent magnitude (V) 6.057
Characteristics
Spectral type G8[1]
Apparent magnitude (B) ~7.092[1]
Apparent magnitude (J) 4.580 ±0.264[1]
Apparent magnitude (H) 3.929 ±0.232[1]
Apparent magnitude (K) 3.814 ±0.354[1]
B−V color index 1.04[2]
Astrometry
Radial velocity (Rv) -60.9 ± 2[1] km/s
Proper motion (μ) RA: 21.54 ±0.64[1] mas/yr
Dec.: 57.61 ±0.45[1] mas/yr
Parallax (π) 7.41[1] ± 0.53[1] mas
Distance 440 ±31.3 ly
(135 ±9.6 pc)
Absolute magnitude (MV) 0.406[2]
Details
Mass 2 ±0.3[2] M
Radius 13.5 ±0.9[2] R
Luminosity 78 ±10[2] L
Surface gravity (log g) 2.48 ±0.10[2] cgs
Temperature 4683 ±100[2] K
Metallicity −0.22 ±0.09[2]
Other designations
HIP 91852, GEN# +1.00173416, IRAS 18418+3630, TYC 2649-1153-1,

AG+36 1680, GSC 02649-01153, 2MASS J18433610+3633237, UBV M 23190, BD+36 3246, HD 173416, PPM 81707, GC 25640, HIC 91852, SAO 67292,

GCRV 11177, HR 7043, SKY# 34387[1]
Database references
SIMBAD data
Exoplanet Archive data
Extrasolar Planets
Encyclopaedia
data

HD 173416 is an intermediate-mass giant star in the constellation Lyra. It is a 6th magnitude star, relatively bright for its distance of about 440 light years from Earth.[1]

Planetary system[edit]

In January 2009, a planet of the star was discovered. This object was detected using the radial velocity method by search programs conducted from the Xinglong Station in China and the Okayama Astrophysical Observatory (OAO) in Japan.[2]

The HD 173416 planetary system
Companion
(in order from star)
Mass Semimajor axis
(AU)
Orbital period
(days)
Eccentricity Inclination Radius
b ≥2.7[2] MJ 1.16[2] 324[2] 0.21[2]

See also[edit]

References[edit]

  1. ^ a b c d e f g h i j k l m n "SIMBAD query result: HIP 91852 -- Star". Centre de Données astronomiques de Strasbourg. Retrieved 2009-06-09. 
  2. ^ a b c d e f g h i j k l m Liu et al. (10 January 2009). "A Planetary Companion Orbiting to the Intermediate-Mass G Giant HD 173416" (abstract). Research in Astronomy and Astrophysics 9 (1): 4. Bibcode:2009RAA.....9....1L. doi:10.1088/1674-4527/9/1/001. Full text (pdf)

External links[edit]

Coordinates: Sky map 18h 43m 36.110s, +36° 33′ 23.78″