Discovery[1] | |
---|---|
Discovered by | P. Wild |
Discovery site | Zimmerwald Obs. |
Discovery date | 23 September 1965 |
Designations | |
(1768) Appenzella | |
Named after | Appenzell (canton)[2] |
1965 SA · 1934 PM 1942 TH | |
main-belt · Nysa[3] | |
Orbital characteristics[1] | |
Epoch 4 September 2017 (JD 2458000.5) | |
Uncertainty parameter 0 | |
Observation arc | 74.56 yr (27,232 days) |
Aphelion | 2.8899 AU |
Perihelion | 2.0141 AU |
2.4520 AU | |
Eccentricity | 0.1786 |
3.84 yr (1,402 days) | |
175.69° | |
0° 15m 24.12s / day | |
Inclination | 3.2582° |
12.423° | |
19.718° | |
Physical characteristics | |
Dimensions | 19.0±1.9 km[4] 19.30±0.17 km[5] 20.221±0.129 km[6][7] 20.86±2.3 km (IRAS:2)[8] 21±2 km[9] |
5.18335±0.00001 h[10] 5.1839±0.0001 h[11] | |
0.03±0.01[9] 0.032±0.007[6][7] 0.0338±0.009 (IRAS:2)[8] 0.039±0.008[5] 0.04±0.01[4] | |
F (Tholen)[1] C (SMASS)[1] B–V = 0.615[1] U–B = 0.230[1] | |
12.70[1][3][4][5][6][9] | |
1768 Appenzella (prov. designation: 1965 SA) is a rare-type Nysian asteroid from the inner regions of the asteroid belt, approximately 20 kilometers in diameter. It was discovered on 23 September 1965, by Swiss astronomer Paul Wild at Zimmerwald Observatory near Bern, Switzerland.[12] It was later named after the Swiss canton of Appenzell.[2]
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