1928 Summa
| Discovery [1] | |
|---|---|
| Discovered by | Y. Väisälä |
| Discovery site | Turku Observatory |
| Discovery date | 21 September 1938 |
| Designations | |
| MPC designation | 1928 Summa |
Named after | Finnish village (Battle of Summa)[2] |
| 1938 SO · 1969 PA | |
| main-belt | |
| Orbital characteristics [1] | |
| Epoch 13 January 2016 (JD 2457400.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 77.47 yr (28295 days) |
| Aphelion | 2.9793 AU (445.70 Gm) |
| Perihelion | 1.9736 AU (295.25 Gm) |
| 2.4764 AU (370.46 Gm) | |
| Eccentricity | 0.20305 |
| 3.90 yr (1423.4 d) | |
| 306.21° | |
| 0° 15m 10.476s / day | |
| Inclination | 4.5755° |
| 180.42° | |
| 157.88° | |
| Earth MOID | 0.96366 AU (144.161 Gm) |
| Jupiter MOID | 2.41129 AU (360.724 Gm) |
| Jupiter Tisserand parameter | 3.448 |
| Physical characteristics | |
| 6.8549 h (0.28562 d) | |
| B–V = 1.010 | |
| 12.68 | |
|
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1928 Summa, provisional designation 1938 SO, is a main-belt asteroid discovered on September 21, 1938 by Y. Väisälä at Turku Observatory.[1] Its light curve was measured by Richard Binzel and shows a period of 6.8549±0.0006 h and amplitude of 0.18±0.01 mag.[3]
The asteroid is named after the village on the Karelian Isthmus, where the Battle of Summa took place during the Finnish Winter War (1939–1940).[2]
References
- 1 2 3 "JPL Small-Body Database Browser: 1928 Summa (1938 SO)" (2015-05-16 last obs.). Jet Propulsion Laboratory. Retrieved 18 April 2016.
- 1 2 Schmadel, Lutz D. (2003). Dictionary of Minor Planet Names – (1928) Summa. Springer Berlin Heidelberg. p. 155. ISBN 978-3-540-29925-7. Retrieved October 2015.
- ↑ "Asteroid light curve 01928 (Summa)". Hills Observatory. Retrieved October 2015.
- Binzel, R.P. (1987) Icarus 72, 135-208.
External links
- "1928 Summa (1938 SO)". JPL Small-Body Database. Jet Propulsion Laboratory. SPK-ID: 2001928.
- Minor Planet Bulletin, 2013, pp.12–13
- 1928 Summa at the JPL Small-Body Database
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