Astronomy:254 Augusta
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Short description: Main-belt asteroid
_Augusta.png) Modelled shape of Augusta from its lightcurve | |
| Discovery [1] | |
|---|---|
| Discovered by | J. Palisa |
| Discovery site | Vienna Obs. |
| Discovery date | 31 March 1886 |
| Designations | |
| (254) Augusta | |
| Pronunciation | /ɒˈɡʌstə/[3] |
| Named after | Auguste von Littrow [2] |
| A886 FA | |
| Minor planet category | Augusta · main-belt |
| Orbital characteristics [1] | |
| Epoch 31 July 2016 (JD 2457600.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 130.04 yr (47498 d) |
| |{{{apsis}}}|helion}} | 2.4613 astronomical unit|AU (368.21 Gm) |
| |{{{apsis}}}|helion}} | 1.9281 AU (288.44 Gm) |
| 2.1947 AU (328.32 Gm) | |
| Eccentricity | 0.12147 |
| Orbital period | 3.25 yr (1187.5 d) |
| Average Orbital speed | 20.1 km/s[citation needed] |
| Mean anomaly | 340.92° |
| Mean motion | 0° 18m 11.34s / day |
| Inclination | 4.5131° |
| Longitude of ascending node | 28.473° |
| 233.14° | |
| Earth MOID | 0.916708 AU (137.1376 Gm) |
| Jupiter MOID | 2.58938 AU (387.366 Gm) |
| TJupiter | 3.656 |
| Physical characteristics | |
| Dimensions | 12.11±1.1 km |
| Rotation period | 5.8949 h (0.24562 d) |
| Geometric albedo | 0.1695±0.036 |
| B–V = 0.845 U–B = 0.505 Tholen = S | |
| Absolute magnitude (H) | 12.13 |
Augusta (minor planet designation: 254 Augusta) is a main-belt asteroid, discovered on 31 March 1886 by astronomer Johann Palisa at Vienna Observatory, Austria. The stony S-type asteroid measures about 12 kilometers in diameter.[1] It is the first-numbered member of the Augusta family, after which the small Asteroid family and subgroup of the main-belt has been named. Augusta was named after the German–Austrian writer Auguste von Littrow (1819–1890), widow of astronomer Carl Ludwig von Littrow, who was a former director of the Vienna Observatory.[2]
References
- ↑ 1.0 1.1 1.2 "JPL Small-Body Database Browser: 254 Augusta". Jet Propulsion Laboratory. https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2000254. Retrieved 12 May 2016.
- ↑ 2.0 2.1 Schmadel, Lutz D. (2003). Dictionary of Minor Planet Names – (254) Augusta. Springer Berlin Heidelberg. p. 37. doi:10.1007/978-3-540-29925-7_255. ISBN 978-3-540-29925-7.
- ↑ Noah Webster (1884) A Practical Dictionary of the English Language
External links
- "254 Augusta". JPL Small-Body Database. Jet Propulsion Laboratory. http://ssd.jpl.nasa.gov/sbdb.cgi?sstr=2000254.
- The Asteroid Orbital Elements Database
- Minor Planet Discovery Circumstances
- Asteroid Lightcurve Data File
- 254 Augusta at AstDyS-2, Asteroids—Dynamic Site
- 254 Augusta at the JPL Small-Body Database
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