Eta Leonis

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Eta Leonis
Observation data
Epoch J2000
Constellation
(pronunciation)
Leo
Right ascension 10h 07m 20.0s
Declination +16° 45′ 46″
Apparent magnitude (V) 3.52
Characteristics
Spectral type A0 Ib
U-B color index -0.21
B-V color index -0.03
Variable type Eclipsing binary
Astrometry
Radial velocity (Rv) 3 km/s
Proper motion (μ) RA: −1.94 mas/yr
Dec.: −0.53 mas/yr
Parallax (π) 1.53 ± 0.77 mas
Distance approx. 2000 ly
(approx. 700 pc)
Absolute magnitude (MV) −5.60
Details
Mass ? M
Radius 44 R
Luminosity 16,400 L
Temperature ~9,900 K
Metallicity ?
Rotation 20 km/s
Age ? years
Other designations
Al Jabhah, 30 Leo, HR 3975, BD +17°2171, HD 87737, SAO 98955, FK5 379, HIP 49583.

Eta Leonis (η Leo / η Leonis) is a white fourth-magnitude star in the constellation Leo. It has the Arabic traditional name of Al Jabhah, meaning "Front" or "Forehead".