#01 of an ongoing series

Gem from 51 Pegasi b 🪐

51 Pegasi b is the first convincing exoplanet discovered around a Sun-like star.

Apastro / 0.0534 AU (7,990,000 km)
Periastron / 0.0520 AU (7,780,000 km)
Semi-major axis / 0.0527 ± 0.0030 AU (7,880,000 ± 450,000 km)
Eccentricity / 0.013 ± 0.012
Orbital period / 4.230785 ± 0.000036 d
101.5388 h
Average orbital speed / 136 km/s
Star / 51 Pegas

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