3045 Alois
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| Discovery[1] | |
|---|---|
| Discovered by | J. Wagner |
| Discovery site | Anderson Mesa Stn. |
| Discovery date | 8 January 1984 |
| Designations | |
| (3045) Alois | |
Named after | Alois T. Stuczynski (discoverer's grandfather)[2] |
| 1984 AW · 1954 QD 1965 QD · 1971 SB3 1982 SY3 | |
| main-belt · (outer)[3] | |
| Orbital characteristics[1] | |
| Epoch 4 September 2017 (JD 2458000.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 66.15 yr (24,160 days) |
| Aphelion | 3.4822 AU |
| Perihelion | 2.7782 AU |
| 3.1302 AU | |
| Eccentricity | 0.1124 |
| 5.54 yr (2,023 days) | |
| 120.77° | |
| 0° 10m 40.8s / day | |
| Inclination | 3.3434° |
| 36.206° | |
| 330.87° | |
| Physical characteristics | |
| Dimensions | 23.51±1.58 km[4] 26.64 km (calculated)[3] 27.49±0.20 km[5] |
| 3.7533±0.0058 h[6] | |
| 0.057 (assumed)[3] 0.059±0.009[5] 0.095±0.015[4] | |
| X[7] · C[3] | |
| 11.40[4] · 11.412±0.001 (R)[6] · 11.50[5] · 11.6[1][3] · 11.91±0.17[7] | |
3045 Alois, provisional designation 1984 AW, is a carbonaceous asteroid from the outer region of the asteroid belt, approximately 26 kilometers in diameter. The asteroid was discovered on 8 January 1984, by American astronomer Joe Wagner at Lowell's Anderson Mesa Station in Flagstaff, Arizona, United States.[8] It was named after the discoverer's grandfather Alois Stuczynski.[2]
Alois orbits the Sun in the outer main-belt at a distance of 2.8–3.5 AU once every 5 years and 6 months (2,023 days). Its orbit has an eccentricity of 0.11 and an inclination of 3° with respect to the ecliptic.[1] A first precovery was taken at Palomar Observatory in 1951, extending the body's observation arc by 33 years prior to its official discovery observation at Anderson Mesa.[8]
Physical characteristics
The C-type body is also classified as an X-type asteroid by Pan-STARRS' large-scale survey.[7]
Rotation period
In November 2010, a rotational lightcurve of Alois was obtained from photometric observations made at the Palomar Transient Factory, California. It gave a rotation period of 3.7533±0.0058 hours with a brightness amplitude of 0.18 in magnitude (U=2).[6]
Diameter and albedo
According to the space-based surveys by the Japanese Akari satellite and NASA's Wide-field Infrared Survey Explorer, Alois measures 23.5 and 27.5 kilometers in diameter, respectively, and has a corresponding albedo of 0.095 and 0.059.[4][5] The Collaborative Asteroid Lightcurve Link assumes a standard albedo for carbonaceous asteroids of 0.057 and calculates a diameter of 26.6 kilometers.[3]
