Astronomy:440 Theodora
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Short description: Main-belt asteroid
.png) A three-dimensional model of 440 Theodora based on its light curve | |
| Discovery | |
|---|---|
| Discovered by | E. F. Coddington |
| Discovery date | 13 October 1898 |
| Designations | |
| (440) Theodora | |
| Pronunciation | /θiːəˈdɔːrə/[1] |
| 1898 EC | |
| Minor planet category | Main belt |
| Orbital characteristics[2] | |
| Epoch 31 July 2016 (JD 2457600.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 117.50 yr (42917 d) |
| |{{{apsis}}}|helion}} | 2.44735 astronomical unit|AU (366.118 Gm) |
| |{{{apsis}}}|helion}} | 1.97352 AU (295.234 Gm) |
| 2.21043 AU (330.676 Gm) | |
| Eccentricity | 0.10718 |
| Orbital period | 3.29 yr (1200.4 d) |
| Mean anomaly | 224.670° |
| Mean motion | 0° 17m 59.669s / day |
| Inclination | 1.59566° |
| Longitude of ascending node | 292.133° |
| 179.039° | |
| Physical characteristics | |
| Dimensions | 13.6 km[2] |
| Rotation period | 4.828 h (0.2012 d) |
| Geometric albedo | 0.630[2] |
| Absolute magnitude (H) | 11.6[2] |
Theodora (minor planet designation: 440 Theodora) is a small Main belt asteroid.[2]
It was discovered by E. F. Coddington on October 13, 1898, at Mount Hamilton. It was his second asteroid discovery.
References
- ↑ Noah Webster (1884) A Practical Dictionary of the English Language
- ↑ 2.0 2.1 2.2 2.3 2.4 "440 Theodora (1898 EC)". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=440;cad=1.
External links
- 440 Theodora at AstDyS-2, Asteroids—Dynamic Site
- 440 Theodora at the JPL Small-Body Database
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