Alpha Cephei
Sign in to saveAlso known as Alderamin, 1RXS J211837.1+623513, α Cephei, α Cep, GJ 826, HIP 105199, HIC 105199, ROT 3108
star in the constellation of Cepheus
Key facts
- Constellation
- Cepheus
- Right ascension
- 21 18 34.7723
- Declination
- +62 ° 35 ′ 08.069 ″
- Evolutionary stage
- Subgiant
- Spectral type
- A8Vn or A7IV-V
- U b color index
- +0.12
- B v color index
- +0.21
- Variable type
- δ Sct + γ Dor
via Wikipedia infobox
~4 min read
Encyclopedic overview
Alpha Cephei is a second magnitude star in the northern constellation of Cepheus. It has the official name Alderamin, pronounced /ælˈdɛrəmɪn/; Alpha Cephei is its Bayer designation, which is Latinized from α Cephei and abbreviated Alpha Cep or α Cep. The star is relatively close to Earth at 49 light years (ly) and drifting closer with a heliocentric radial velocity of about −16 km/s.
Nomenclature
Excerpted from Wikipedia’s “Alpha Cephei” article, available under the CC BY-SA 4.0 licence.