7545 Smaklösa
| Discovery | |
|---|---|
| Discovered by | C.-I. Lagerkvist |
| Discovery site | Mount Stromlo Obs. |
| Discovery date | 28 July 1978 |
| Designations | |
| MPC designation | (7545) Smaklösa |
|
Named after
|
Smaklösa (Swedish band) |
| 1978 OB · 1995 OP | |
| main-belt · (inner) | |
| Orbital characteristics | |
| Epoch 16 February 2017 (JD 2457800.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 38.28 yr (13,980 days) |
| Aphelion | 2.7890 AU |
| Perihelion | 1.7345 AU |
| 2.2617 AU | |
| Eccentricity | 0.2331 |
| 3.40 yr (1,242 days) | |
| 116.46° | |
| 0° 17m 23.28s / day | |
| Inclination | 6.5197° |
| 114.89° | |
| 200.07° | |
| Earth MOID | 0.7226 AU |
| Physical characteristics | |
| Dimensions |
4.131±0.112 km 4.30 km (calculated) |
|
14.3002±0.0218 h 14.322±0.004 14.330±0.220 h |
|
| 0.20 (assumed) 0.237±0.025 |
|
| S | |
| 14.1 · 14.2 · 14.650±0.300 (R) · 14.666±0.005 (R) | |
7545 Smaklösa, provisional designation 1978 OB, is a stony asteroid from the inner regions of the asteroid belt, approximately 4 kilometers in diameter. It was discovered on 28 July 1978, by Swedish astronomer Claes-Ingvar Lagerkvist at Mount Stromlo Observatory in Canberra, Australia.
The S-type asteroid orbits the Sun at a distance of 1.7–2.8 AU once every 3 years and 5 months (1,242 days). Its orbit has an eccentricity of 0.23 and an inclination of 7° with respect to the ecliptic. As no precoveries were taken, the asteroid's observation arc begins with its discovery in 1978.
In August 2012, a rotational light-curve was obtained for this asteroid at the Oakley Southern Sky Observatory in Coonabarabran, Australia. The photometric observation showed a well-defined rotation period of 14.322±0.004 hours with a brightness variation of 0.75 in magnitude (U=3). Similar periods of 14.330±0.220 and 14.3002±0.0218 hours were derived at the U.S Palomar Transient Factory in 2014 (U=2/2).
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