Discovery | |
---|---|
Discovered by | Joel Hastings Metcalf |
Discovery site | Taunton, Massachusetts |
Discovery date | 11 December 1909 |
Designations | |
(691) Lehigh | |
Pronunciation | /ˈliːhaɪ/[1] |
1909 JG | |
Orbital characteristics[2] | |
Epoch 31 July 2016 (JD 2457600.5) | |
Uncertainty parameter 0 | |
Observation arc | 101.40 yr (37038 d) |
|{{{apsis}}}|helion}} | 3.3787 astronomical unit|AU (505.45 Gm) |
|{{{apsis}}}|helion}} | 2.6443 AU (395.58 Gm) |
3.0115 AU (450.51 Gm) | |
Eccentricity | 0.12194 |
Orbital period | 5.23 yr (1908.9 d) |
Mean anomaly | 189.349° |
Mean motion | 0° 11m 18.924s / day |
Inclination | 13.010° |
Longitude of ascending node | 87.997° |
304.466° | |
Physical characteristics | |
Mean radius | 43.84±0.85 km |
Rotation period | 12.891 h (0.5371 d) |
Geometric albedo | 0.0438±0.002 |
Absolute magnitude (H) | 9.2 |
691 Lehigh is a minor planet (the earlier term for an asteroid) orbiting the Sun, discovered in 1909.[3] It is named "Lehigh" after Lehigh University, where its orbit was calculated in the Masters Thesis of Joseph B. Reynolds, following the observations of amateur astronomer Joel Metcalf.
Original source: https://en.wikipedia.org/wiki/691 Lehigh.
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