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.[3]

254 Augusta
Modelled shape of Augusta from its lightcurve
Discovery [1]
Discovered byJ. Palisa
Discovery siteVienna Obs.
Discovery date31 March 1886
Designations
(254) Augusta
Pronunciation/ɒˈɡʌstə/[2]
Named after
Auguste von Littrow[3]
A886 FA
Augusta · main-belt
Orbital characteristics[1]
Epoch 31 July 2016 (JD 2457600.5)
Uncertainty parameter 0
Observation arc130.04 yr (47498 d)
Aphelion2.4613 AU (368.21 Gm)
Perihelion1.9281 AU (288.44 Gm)
2.1947 AU (328.32 Gm)
Eccentricity0.12147
3.25 yr (1187.5 d)
20.1 km/s[citation needed]
340.92°
0° 18m 11.34s / day
Inclination4.5131°
28.473°
233.14°
Earth MOID0.916708 AU (137.1376 Gm)
Jupiter MOID2.58938 AU (387.366 Gm)
TJupiter3.656
Physical characteristics
Dimensions12.11±1.1 km
5.8949 h (0.24562 d)
0.1695±0.036
B–V = 0.845
U–B = 0.505
Tholen = S
12.13

References

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  1. ^ a b c "JPL Small-Body Database Browser: 254 Augusta" (2015-03-28 last obs.). Jet Propulsion Laboratory. Retrieved 12 May 2016.
  2. ^ Noah Webster (1884) A Practical Dictionary of the English Language
  3. ^ a b 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.
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