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.[3]
![]() Modelled shape of Augusta from its lightcurve | |
Discovery [1] | |
---|---|
Discovered by | J. Palisa |
Discovery site | Vienna Obs. |
Discovery date | 31 March 1886 |
Designations | |
MPC designation | (254) Augusta |
Pronunciation | /ɒˈɡʌstə/[2] |
Named after | Auguste von Littrow [3] |
Alternative designations | 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) |
Aphelion | 2.4613 AU (368.21 Gm) |
Perihelion | 1.9281 AU (288.44 Gm) |
Semi-major axis | 2.1947 AU (328.32 Gm) |
Eccentricity | 0.12147 |
Orbital period (sidereal) | 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° |
Argument of perihelion | 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 |
Synodic rotation period | 5.8949 h (0.24562 d) |
Geometric albedo | 0.1695±0.036 |
Spectral type | B–V = 0.845 U–B = 0.505 Tholen = S |
Absolute magnitude (H) | 12.13 |
| |
---|---|
|
Small Solar System bodies | |||||||
---|---|---|---|---|---|---|---|
Minor planets |
| ||||||
Comets |
| ||||||
Other |
|
![]() | This article about an S-type asteroid native to the asteroid belt is a stub. You can help Wikipedia by expanding it. |