HD 148427

HD 148427
Timir
Observation data; Epoch J2000.0 Equinox J2000.0
Constellation	Ophiuchus
Right ascension	16h 28m 28.151s
Declination	–13° 23′ 58.69″
Apparent magnitude (V)	6.903
Characteristics
Spectral type	K0IV
Apparent magnitude (B)	7.839
Apparent magnitude (J)	5.299
Apparent magnitude (H)	4.875
Apparent magnitude (K)	4.682
B−V color index	0.936
Astrometry
Proper motion (μ)	RA: –37.74 ± 0.76 mas/yr ; Dec.: 2.81 ± 0.51 mas/yr
Parallax (π)	16.94 ± 0.60 mas
Distance	193 ± 7 ly ; (59 ± 2 pc)
Absolute magnitude (MV)	3.039
Orbit
Primary	HD 148427
Companion	HD 148427 b
Period (P)	331.5 ± 3.0 d; (0.9076 yr)
Semi-major axis (a)	0.93 ± 0.01 AU
Eccentricity (e)	0.16 ± 0.08
Inclination (i)	0.5120+0.1635; −0.1082°
Details
HD 148427
Mass	1.45 ± 0.06 M☉
Radius	3.22 ± 0.2 R☉
Luminosity	6.06 L☉
Surface gravity (log g)	3.75 cgs
Temperature	5052 ± 44 K
Metallicity [Fe/H]	0.154 ± 0.04 dex
Age	2.5 Gyr
HD 148427 b
Mass	136.5+37.2; −33.7 MJup
Other designations
	BD–13°4437, HIP 80687, PPM 231736, SAO 159932
	HD 148427: Timir
	HD 148427 b: Tondra
Database references
SIMBAD	data
Exoplanet Archive	data

HD 148427, formally named Timir,^[2] is a 7th-magnitude K-type subgiant star approximately 193 light years away in the constellation Ophiuchus. Its mass is 45% greater than the Sun, and it is three times the size and six times more luminous, although its age is 2½ billion years.

^ ^a ^b ^c ^d ^e Cite error: The named reference van Leeuwen2007 was invoked but never defined (see the help page).
^ "Naming of exoplanets". IAU. International Astronomical Union. Retrieved 26 January 2022.

[van_Leeuwen2007-1] Cite error: The named reference van Leeuwen2007 was invoked but never defined (see the help page).

[Star_names-2] "Naming of exoplanets". IAU. International Astronomical Union. Retrieved 26 January 2022.

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[2]