1994 Shane
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| Discovery[1] | |
|---|---|
| Discovered by | Indiana University (Indiana Asteroid Program) |
| Discovery site | Goethe Link Obs. |
| Discovery date | 4 October 1961 |
| Designations | |
| (1994) Shane | |
Named after | C. Donald Shane[2] (American astronomer) |
| 1961 TE · 1939 RN | |
| main-belt · (middle) [3] Adeona[4] | |
| Orbital characteristics[1] | |
| Epoch 4 September 2017 (JD 2458000.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 77.64 yr (28,358 days) |
| Aphelion | 3.2332 AU |
| Perihelion | 2.1282 AU |
| 2.6807 AU | |
| Eccentricity | 0.2061 |
| 4.39 yr (1,603 days) | |
| 298.87° | |
| 0° 13m 28.56s / day | |
| Inclination | 10.217° |
| 244.73° | |
| 89.669° | |
| Physical characteristics | |
| Dimensions | 17.91±0.93 km[5] 25.00 km (derived)[3] 25.15±0.6 km (IRAS:19)[6] |
| 8 h[7] 8.220±0.001 h[8] | |
| 0.0340 (derived)[3] 0.0640±0.003 (IRAS:19)[6] 0.129±0.014[5] | |
| S[3] | |
| 11.6[5][6] · 11.81±0.86[9] · 12.3[1][3] | |
1994 Shane, provisional designation 1961 TE, is a dark Adeonian asteroid from the central region of the asteroid belt, approximately 25 kilometers in diameter.
It was discovered on 4 October 1961, by astronomers of the Indiana Asteroid Program conducted at the Goethe Link Observatory near Brooklyn, Indiana, United States.[10] It was later named after American astronomer C. Donald Shane.[2]
Shane is a member of the Adeona family (505), a large family of carbonaceous asteroids.[4]
The asteroid orbits the Sun in the intermediate main belt at a distance of 2.1–3.2 AU once every 4 years and 5 months (1,603 days). Its orbit has an eccentricity of 0.21 and an inclination of 10° with respect to the ecliptic.[1] It was first identified as 1939 RN at Simeiz Observatory in 1939, extending Shane's observation arc by 22 years prior to its official discovery observation at Goethe.[10]
Lightcurve
In October 2009, a rotational lightcurve of Shane was obtained from photometric observations at the Via Capote Observatory (G69) in California. It gave a well-defined rotation period of 8.22 hours with a brightness variation of 0.26 magnitude (U=3),[8] superseding a previously obtained period of 8 hours from 1996 (U=n.a.).[7]
Diameter and albedo
According to observations made by the Infrared Astronomical Satellite IRAS, Shane has an albedo of 0.06,[6] while the survey carried out by the Japanese Akari satellite rendered a higher albedo of 0.13 with a corresponding diameter of 18 kilometers.[5] The Collaborative Asteroid Lightcurve Link derives an even lower albedo of 0.04, yet does not classify it as a carbonaceous but rather as a S-type asteroid, which typically have much higher albedos due to their stony surface composition.[3]
