| Discovery[1] | |
|---|---|
| Discovered by | C.-I. Lagerkvist |
| Discovery site | Mount Stromlo Obs. |
| Discovery date | 28 July 1978 |
| Designations | |
| (7545) Smaklösa | |
Named after | Smaklösa (Swedish band)[2] |
| 1978 OB · 1995 OP | |
| main-belt · (inner)[3] background | |
| Orbital characteristics[1] | |
| Epoch 4 September 2017 (JD 2458000.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 38.61 yr (14,104 days) |
| Aphelion | 2.7888AU |
| Perihelion | 1.7342 AU |
| 2.2615 AU | |
| Eccentricity | 0.2332 |
| 3.40yr (1,242 days) | |
| 174.45° | |
| 0° 17m 23.28s / day | |
| Inclination | 6.5200° |
| 114.89° | |
| 200.04° | |
| Physical characteristics | |
| Dimensions | 4.131±0.112 km[4][5] 4.30 km(calculated)[3] |
| 14.3002±0.0218h[6] 14.322±0.004[7] 14.330±0.220 h[8] | |
| 0.20(assumed)[3] 0.237±0.025[4][5] | |
| S[3] | |
| 14.1[4] · 14.2[1][3] · 14.650±0.300(R)[8] · 14.666±0.005(R)[6] | |
7545 Smaklösa, provisional designation1978 OB, is a stony backgroundasteroid from the inner regions of theasteroid belt, approximately 4 kilometers in diameter. It was discovered on 28 July 1978, by Swedish astronomerClaes-Ingvar Lagerkvist atMount Stromlo Observatory in Canberra, Australia.[9] The asteroid was named for the Swedish bandSmaklösa.[2]
Smaklösa orbits the Sun in theinner main-belt at a distance of 1.7–2.8 AU once every 3 years and 5 months (1,242 days). Its orbit has aneccentricity of 0.23 and aninclination of 7° with respect to theecliptic.[1] As noprecoveries were taken, the asteroid'sobservation arc begins with its discovery in 1978.[9]
In August 2012, a rotationallightcurve ofSmaklösa was obtained at the Oakley Southern Sky Observatory in Coonabarabran, Australia. Thephotometric observation showed a well-definedrotation period of14.322±0.004 hours with a brightness variation of 0.75 inmagnitude (U=3).[7] Similar periods of14.330±0.220 and14.3002±0.0218 hours were derived at the U.SPalomar Transient Factory in 2014 (U=2/2).[6][8]
According to the survey carried out by theNEOWISE mission of NASA'sWide-field Infrared Survey Explorer,Smaklösa measures 4.1 kilometers in diameter and its surface has analbedo of 0.24,[4][5] while theCollaborative Asteroid Lightcurve Link assumes a standard albedo forstony asteroids of 0.20 and calculates a diameter of 4.3 kilometers.[3]
Thisminor planet was named after theGotlandic music groupSmaklösa. (Literally "Flavourless", but also "Tasteless" or "Tacky". The latter meaning is intended here as indicated by the name of their own record label "Tasteless Records").[10]
The Swedish band gave a number of concerts on the island of Gotland. They are known for their cleverly phrased lyrics mixed with the local humor of the island. The discoverer of this minor planet has named it after the band, grateful for having attended their concerts in 1998, which are unforgettable to him.[2] The official naming citation was published by theMinor Planet Center on 8 December 1998 (M.P.C. 33387).[11]
