183 Istria
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Istria (minor planet designation: 183 Istria) is a stony background asteroid from the central regions of the asteroid belt, approximately 33 kilometers (21 miles) in diameter. It was discovered on 8 February 1878, by Austrian astronomer Johann Palisa at the Austrian Naval Observatory in Pola, in what is now Croatia.[1] The S-type asteroid has a rotation period of 11.77 hours.[13] It was named for the Istrian Peninsula.[3]
Quick Facts Discovery, Discovered by ...
Discovery[1] | |
---|---|
Discovered by | J. Palisa |
Discovery site | Austrian Naval Obs. |
Discovery date | 8 February 1878 |
Designations | |
(183) Istria | |
Pronunciation | /ˈɪstriə/[2] |
Named after | Istrian Peninsula[3] (in the Adriatic Sea) |
A878 CD; 1948 CG | |
main-belt[1][4] · (middle) background[5][6] | |
Orbital characteristics[4] | |
Epoch 23 March 2018 (JD 2458200.5) | |
Uncertainty parameter 0 | |
Observation arc | 112.08 yr (40,937 d) |
Aphelion | 3.7699 AU |
Perihelion | 1.8117 AU |
2.7908 AU | |
Eccentricity | 0.3508 |
4.66 yr (1,703 d) | |
61.603° | |
0° 12m 41.04s / day | |
Inclination | 26.391° |
141.95° | |
264.12° | |
Physical characteristics | |
Mean diameter | 30.779±0.278 km[7] 32.927±0.168 km[8] 34.55±0.84 km[9] 35.43±2.8 km[10] |
11.6±0.5 h[11] 11.77 h[12] | |
0.1890±0.034[10] 0.201±0.012[9] 0.227±0.038[8] 0.2582±0.0384[7] | |
Tholen = S[4] SMASS = S[4][13] S[14][15] B–V = 0.842[4] U–B = 0.359[4] | |
9.56±0.45[15] 9.66[12] 9.68[4][13][7][9][10] | |
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