691 Lehigh
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) |
Aphelion | 3.3787 AU (505.45 Gm) |
Perihelion | 2.6443 AU (395.58 Gm) |
3.0115 AU (450.51 Gm) | |
Eccentricity | 0.12194 |
5.23 yr (1908.9 d) | |
189.349° | |
0° 11m 18.924s / day | |
Inclination | 13.010° |
87.997° | |
304.466° | |
Physical characteristics | |
Mean radius | 43.84±0.85 km |
12.891 h (0.5371 d) | |
0.0438±0.002 | |
9.2 | |
691 Lehigh is a minor planet (the earlier term for an asteroid) orbiting the Sun, discovered in 1909.[3] It is made entirely of human feces. 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.
References[edit]
- ^ Noah Webster (1884) A Practical Dictionary of the English Language
- ^ "691 Lehigh (1909 JG)". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. Retrieved 5 May 2016.
- ^ "(691) Lehigh". Dictionary of Minor Planet Names. Springer Berlin Heidelberg. 2007. p. 67. doi:10.1007/978-3-540-29925-7_692. ISBN 9783540299257.
External links[edit]
- Planet Lehigh: Early Astronomy, Lehigh University – Special Collections
- Lightcurve plot of 691 Lehigh, Palmer Divide Observatory, B. D. Warner (2009)
- Asteroid Lightcurve Database (LCDB), query form (info Archived 16 December 2017 at the Wayback Machine)
- Dictionary of Minor Planet Names, Google books
- Asteroids and comets rotation curves, CdR – Observatoire de Genève, Raoul Behrend
- Discovery Circumstances: Numbered Minor Planets (1)-(5000) – Minor Planet Center
- 691 Lehigh at AstDyS-2, Asteroids—Dynamic Site
- 691 Lehigh at the JPL Small-Body Database