HD 88133 information

HD 88133
Observation data; Epoch J2000.0 Equinox J2000.0
Constellation	Leo
Right ascension	10h 10m 07.676s
Declination	+18° 11′ 12.73″
Apparent magnitude (V)	8.01
Characteristics
Spectral type	G8V
B−V color index	0.810±0.015
Astrometry
Radial velocity (Rv)	−3.62±0.14 km/s
Proper motion (μ)	RA: −11.135 mas/yr ; Dec.: −264.912 mas/yr
Parallax (π)	13.5882 ± 0.0249 mas
Distance	240.0 ± 0.4 ly ; (73.6 ± 0.1 pc)
Absolute magnitude (MV)	3.50
Details
Mass	1.23±0.16 M☉
Radius	2.01±0.04 R☉
Luminosity	3.14±0.02 L☉
Surface gravity (log g)	3.82 cgs
Temperature	5,414±97 K
Metallicity [Fe/H]	0.26 dex
Rotational velocity (v sin i)	4.9 km/s
Age	5.08 Gyr
Other designations
	BD+18 2326, HD 88133, HIP 49813, SAO 98978, LTT 12725, NLTT 23562, TYC 1422-1130-1, 2MASS J10100767+1811132
Database references
SIMBAD	data

HD 88133 is a yellow star with an orbiting exoplanet in the equatorial constellation of Leo. It has an apparent visual magnitude of 8.01,^[2] which is too faint to be visible to the naked eye. With a small telescope it should be easily visible. The distance to this system, as measured through parallax, is 240 light years, but it is slowly drifting closer with a radial velocity of −3.6 km/s.^[4]

This is classified as an ordinary G-type main-sequence star with a stellar classification of G8V.^[3] However, D. A. Fischer and associates in 2005 listed a class of G5 IV, suggesting it is instead a subgiant star that is evolving away from the main sequence having exhausted the hydrogen at its core.^[8] It is about 5 billion years old and is spinning with a projected rotational velocity of 4.9 km/s.^[5] The star has 23% more mass than the Sun and has double the Sun's girth.^[6] It is radiating over three times the luminosity of the Sun from its photosphere at an effective temperature of 5,414 km/s.^[4]

^ ^a ^b ^c ^d Cite error: The named reference GaiaDR3 was invoked but never defined (see the help page).
^ ^a ^b ^c Cite error: The named reference Anderson_Francis_2012 was invoked but never defined (see the help page).
^ ^a ^b Cite error: The named reference Grieves_et_al_2018 was invoked but never defined (see the help page).
^ ^a ^b ^c ^d ^e Cite error: The named reference Gaia DR2 was invoked but never defined (see the help page).
^ ^a ^b ^c ^d ^e ^f Cite error: The named reference Earle2017 was invoked but never defined (see the help page).
^ ^a ^b ^c Cite error: The named reference Stassun_et_al_2017 was invoked but never defined (see the help page).
^ Cite error: The named reference Simbad was invoked but never defined (see the help page).
^ Cite error: The named reference Fischer2005 was invoked but never defined (see the help page).

[GaiaDR3-1] Cite error: The named reference GaiaDR3 was invoked but never defined (see the help page).

[Anderson_Francis_2012-2] Cite error: The named reference Anderson_Francis_2012 was invoked but never defined (see the help page).

[Grieves_et_al_2018-3] Cite error: The named reference Grieves_et_al_2018 was invoked but never defined (see the help page).

[Gaia_DR2-4] Cite error: The named reference Gaia DR2 was invoked but never defined (see the help page).

[Earle2017-5] ^ ^a ^b ^c ^d ^e ^f Cite error: The named reference Earle2017 was invoked but never defined (see the help page).

[Stassun_et_al_2017-6] Cite error: The named reference Stassun_et_al_2017 was invoked but never defined (see the help page).

[Simbad-7] Cite error: The named reference Simbad was invoked but never defined (see the help page).

[Fischer2005-8] Cite error: The named reference Fischer2005 was invoked but never defined (see the help page).

Observation data Epoch J2000.0 Equinox J2000.0
Constellation	Leo
Right ascension	10^h 10^m 07.676^s^[1]
Declination	+18° 11′ 12.73″^[1]
Apparent magnitude (V)	8.01^[2]
Characteristics
Spectral type	G8V^[3]
B−V color index	0.810±0.015^[2]
Astrometry

Radial velocity (R_v)	−3.62±0.14^[4] km/s
Proper motion (μ)	RA: −11.135 mas/yr^[1] Dec.: −264.912 mas/yr^[1]
Parallax (π)	13.5882 ± 0.0249 mas^[1]
Distance	240.0 ± 0.4 ly (73.6 ± 0.1 pc)
Absolute magnitude (M_V)	3.50^[5]

Details

Mass	1.23±0.16^[6] `M`_☉
Radius	2.01±0.04^[6] `R`_☉
Luminosity	3.14±0.02^[4] `L`_☉
Surface gravity (log g)	3.82^[5] cgs
Temperature	5,414±97^[4] K
Metallicity [Fe/H]	0.26^[5] dex
Rotational velocity (v sin i)	4.9^[5] km/s
Age	5.08^[5] Gyr

Other designations
BD+18 2326, HD 88133, HIP 49813, SAO 98978, LTT 12725, NLTT 23562, TYC 1422-1130-1, 2MASS J10100767+1811132^[7]
Database references
SIMBAD	data

HD 88133 information

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HD 88133

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Mu Leonis

Lambda Leonis

Omega Leonis

Phi Leonis

List of exoplanets detected by radial velocity

88 Leonis

89 Leonis

Upsilon Leonis

Tau Leonis

Pi Leonis

Chi Leonis

Nu Leonis

Psi Leonis

Xi Leonis