HAT-P-4

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HAT-P-4
Observation data
Epoch J2000      Equinox J2000
Constellation Boötes
Right ascension 15h 19m 57.922s[1]
Declination +36° 13′ 46.73″[1]
Apparent magnitude (V) 11.0[2]
Characteristics
Spectral type F[2]
B−V color index 0.771
Astrometry
Proper motion (μ) RA: –21.9 ± 1.2[1] mas/yr
Dec.: –23.4 ± 0.7[1] mas/yr
Parallax (π) 0.2 mas
Distance 1010.6 ± 97.8 ly
(310 ± 30 pc)
Details
Mass ~ 1.26 M☉
Radius 1.59 ± 0.07 R☉
Luminosity 0.41 L☉
Surface gravity (log g) 4.14 ± 0.03[3] cgs
Temperature 5890 ± 67[3] K
Metallicity [Fe/H] 0.20 ± 0.08[3] dex
Rotational velocity (v sin i) 5.6 ± 0.9[3] km/s
Age ~4.2 Gyr
Other designations
BD+36°2593, SAO 64638, AG+36° 1339, GSC 02569-01599, PPM 78511, TYC 2569-1599-1
Database references
SIMBAD data
Extrasolar Planets
Encyclopaedia		 data
Data sources:
Hipparcos Catalogue,
CCDM (2002),
Bright Star Catalogue (5th rev. ed.)

HAT-P-4 is a F9-type main-sequence star in the constellation of Boötes.[2] It is also designated BD+36°2593.

Planetary System

This star is home to the transiting extrasolar planet HAT-P-4b.[4]

The HAT-P-4 planetary system[5][6]
Companion
(in order from star)		 Mass Semimajor axis
(AU)		 Orbital period
(days)		 Eccentricity Inclination Radius
b 0.68 ± 0.04 MJ 0.04465 ± 0.00042 3.0565254 ± 0.0000012 0 — —

See also

References

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External links

  • Image HAT-P-4
  • Lua error in package.lua at line 80: module 'strict' not found.

Coordinates: Sky map 15h 19m 58s, +36° 13′ 47″


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  1. ↑ 1.0 1.1 1.2 1.3 Lua error in package.lua at line 80: module 'strict' not found.Vizier catalog entry
  2. ↑ 2.0 2.1 2.2 Lua error in package.lua at line 80: module 'strict' not found.
  3. ↑ 3.0 3.1 3.2 3.3 Lua error in package.lua at line 80: module 'strict' not found.
  4. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  5. ↑ Lua error in package.lua at line 80: module 'strict' not found.
  6. ↑ Lua error in package.lua at line 80: module 'strict' not found.
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