Mu Persei

Mu Persei

Location of μ Persei (circled)

Observation data Epoch J2000.0      Equinox J2000.0
Constellation	Perseus
Right ascension	04^h 14^m 53.86^s
Declination	+48° 24' 33.7"
Apparent magnitude (V)	+4.12
Distance	723 ly (222 pc)
Spectral type	G0Ib
Other designations
μ Persei, μ Per, Mu Per, 51 Persei, BD+48 1063, CCDM J04149+4824A, FK5 1117, GC 5099, HD 26630, HIP 19812, HR 1303, PPM 46912, SAO 39404, WDS J04149+4825A.
Database references
SIMBAD	data

Mu Persei (Mu Per, μ Persei, μ Per) is multiple star system and in constellation of Perseus, with an apparent magnitude of +4.12. The primary component is a yellow G-type supergiant. It is approximately 723 light years from Earth. With the measured temperature as 5337 Kelvin and a radius of 53 times solar, this star has the luminosity same as 2030 times of Sun.^[1]

Mu Persei is moving through the Galaxy at a speed of 35.6 km/s relative to the Sun. Its projected Galactic orbit carries it between 23,900 and 32,400 light years from the center of the Galaxy.^[2]

Mu Persei came closest to the Sun 5.6 million years ago when it had brightened to magnitude 3.25 from a distance of 600 light years.^[2]

Naming

In Chinese, 天船 (Tiān Chuán), meaning Celestial Boat, refers to an asterism consisting of μ Persei, η Persei, γ Persei, α Persei, ψ Persei, δ Persei, 48 Persei and HD 27084. Consequently, μ Persei itself is known as 天船七 (Tiān Chuán qī, English: the Seventh Star of Celestial Boat.)^[3]

References

1. MU PER (Mu Persei)
2. Mu Persei (HIP 19812)
3. (Chinese) AEEA (Activities of Exhibition and Education in Astronomy) 天文教育資訊網 2006 年 7 月 11 日