Tau Persei

Tau Persei
Diagram showing star positions and boundaries of the Perseus constellation and its surroundings


Location of Ï„ Persei (circled)

Observation data
Epoch J2000.0      Equinox J2000.0
Constellation Perseus
Right ascension 02h 54m 15.46s
Declination +52° 45' 45.0"
Apparent magnitude (V) +3.93
Distance248 ly
(76 pc)
Spectral typeG4III...
Other designations
Ï„ Persei, Ï„ Per, Tau Per, 18 Per, BD+44°631, CCDM J03095+4451A, GC 3462, HD 17878, HIP 13531, HR 854, IDS 02472+5221 A, PPM 28080, SAO 23685, WDS J02543+5246A

Tau Persei (Tau Per, Ï„ Persei, Ï„ Per) is multiple star system in constellation of Perseus, with an apparent magnitude of +3.93. The primary component is a yellow G-type giant. It is approximately 248 light years from Earth.

Tau Persei is moving through the Galaxy at a speed of 2.8 km/s relative to the Sun. Its projected Galactic orbit carries it between 24,100 and 34,200 light years from the center of the Galaxy.[1]

Naming

In Chinese, 大陵 (Dà Líng), meaning Mausoleum, refers to an asterism consisting of τ Persei, 9 Persei, ι Persei, κ Persei, β Persei, ρ Persei, 16 Persei and 12 Persei. Consequently, τ Persei itself is known as 大陵二 (Dà Líng èr, English: the Second Star of Mausoleum.).[2]

References

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