Stellar HostProfile

omi UMa

G4 II-III • 54.91 pc

Records

literature rows

Planets

system count

References

distinct source labels

HD: HD 71369HIP: HIP 41704TIC: TIC 73416947

Approximate color

from effective temperature

Stellar source: Teng et al. 2023 • System source: TICv8

Temperature

5075 K

4766.2 to 5242

4 values • 4 distinct

Mass

2.72 Msun

2.72 to 3.09

2 values • 2 distinct

Radius

13.84 Rsun

13.84 to 20.56

3 values • 3 distinct

Luminosity

2.06 log(Lsun)

2.06 to 2.29

3 values • 3 distinct

Distance

54.91 pc

single adopted value

7 values • 1 distinct

Spectral Type

G4 II-III

Multiple classifications reported

G0 (1), G4 II-III (1), G5 III (1)

Planets

Stable across source rows

Sun

1.0 R☉ baseline

omi UMa

13.84 R☉

Discovery

2012

Period

1569.8 days

Radius

—

Mass

1160.4 M⊕

Eq. Temp

—

A Giant Star and Its Single Known Planet

omicron Ursae Majoris, or omi UMa, is a star 179 light-years away with a spectral type of G4 II-III. It has a mass of 2.72 solar masses, a radius of 13.8 solar radii, and a temperature of 5080 K. Its mass and radius estimates are larger than the Sun's, while its reported temperature is cooler.

One known planet, omi UMa b, orbits this host. It was discovered in 2012 using the radial velocity method, which detects the wobble a planet's gravity induces in its star's motion. The planet has a minimum mass of 1160 Earth masses, a lower bound on its true mass and roughly 3.65 times Jupiter's mass. Its minimum mass is larger than Earth's, and it completes one orbit every 1570 days.

Evidence Summary

Rows

Stellar refs

System refs

Distancestable

7 values • 1 distinct

Parallaxstable

7 values • 1 distinct

Temperaturedisputed

4 values • 4 distinct

Massdisputed

2 values • 2 distinct

Radiusdisputed

3 values • 3 distinct

Luminositydisputed

3 values • 3 distinct

Surface Gravitystable

1 values • 1 distinct

Metallicitystable

1 values • 1 distinct

Spectral Typedisputed

3 values • 3 distinct

ST TEFF	ST MASS	ST RAD	ST AGE	ST LUM	ST SPECTYPE	SY DIST	Stellar Ref	System Ref
5075	2.72	13.84	—	2.06	G4 II-III	54.91	Teng et al. 2023	TICv8
—	—	—	—	—	G0	54.91	Cannon & Pickering 1918	TICv8
—	—	—	—	—	—	54.91	Duncan et al. 1991	TICv8
—	—	—	—	—	G5 III	54.91	Garrison & Beattie 1998	TICv8
5242	3.09	14.10	—	2.14	—	54.91	Sato et al. 2012	TICv8
5135.3	—	—	—	—	—	54.91	TICv8	TICv8
4766.2	—	20.56	—	2.29	—	54.91	Gaia DR2	TICv8

omi UMa

Adopted host values from one source row

Radius against the Sun

Known planets

omi UMa b

A Giant Star and Its Single Known Planet

Underlying measurements and references