Fomalhaut

Debris ring around Fomalhaut showing location of planet Fomalhaut b—imaged by
Hubble Space Telescope's coronagraph.
NASA photo.
Observation data
Epoch J2000      Equinox J2000
Constellation Piscis Austrinus
Pronunciation /ˈfoʊməl.hɔːt/, /ˈfoʊməlɔːt/, /foʊməlˈhɔːt/
Right ascension 22
Declination −29° 37′ 20.050″
Apparent magnitude (V) 1.16
Characteristics
Spectral type A3 V
U−B color index 0.08
B−V color index 0.09
Astrometry
Radial velocity (Rv) +6.5 km/s
Proper motion (μ) RA: +328.95 mas/yr
Parallax (π) 129.81 ± 0.47mas
Distance 25.13 ± 0.09 ly
(7.70 ± 0.03 pc)
Absolute magnitude (MV) 1.73
Details
Mass 2.1 ± 0.2M
Radius 1.832R
Luminosity 17.66L
Surface gravity (log g) 4.21
Temperature 8,751K
Metallicity [Fe/H] −0.03dex
Rotational velocity (v sin i) 93 km/s
Age (2 ± 1) × 10 years
Other designations
α Piscis Austrini, Alp PsA, Alf PsA, 24 PsA, Gl 881, HR 8728, CD -30°19370, HD 216956, GCTP 5565.00, LTT 9292, SAO 191524, FK5 867, HIP 113368.
Database references
SIMBAD data
Exoplanet Archive data
ARICNS data
Extrasolar Planets
Encyclopaedia
data

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This article uses material from the Wikipedia article
Fomalhaut, which is released under the Creative Commons Attribution-Share-Alike License 3.0