1767 Lampland
Main-belt asteroid
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1767 Lampland, provisional designation 1962 RJ, is an Eoan asteroid from the outer regions of the asteroid belt, approximately 15 kilometers in diameter. It was discovered on 7 September 1962, by astronomers of the Indiana Asteroid Program at Goethe Link Observatory in Indiana, United States.[6] The asteroid was named after American astronomer Carl Lampland.[2]
_Lampland.png)
Shape model of Lampland from its lightcurve | |
| Discovery[1] | |
|---|---|
| Discovered by | Indiana University (Indiana Asteroid Program) |
| Discovery site | Goethe Link Obs. |
| Discovery date | 7 September 1962 |
| Designations | |
| (1767) Lampland | |
Named after | Carl Lampland[2] (American astronomer) |
| 1962 RJ · 1941 SP 1967 SC | |
| main-belt · (outer) Eos[3] | |
| Orbital characteristics[1] | |
| Epoch 4 September 2017 (JD 2458000.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 75.52 yr (27,585 days) |
| Aphelion | 3.3209 AU |
| Perihelion | 2.7160 AU |
| 3.0185 AU | |
| Eccentricity | 0.1002 |
| 5.24 yr (1,915 days) | |
| 201.21° | |
| 0° 11m 16.44s / day | |
| Inclination | 9.8418° |
| 192.22° | |
| 135.41° | |
| Physical characteristics | |
| Dimensions | 15.448±2.805 km[4] |
| 0.116±0.057[5] | |
| Tholen = XC[1] BâV = 0.750[1] UâB = 0.340[1] | |
| 12.20[1] | |
Orbit and classification
Lampland a member the Eos family (606), the largest asteroid family in the outer main belt consisting of nearly 10,000 asteroids.[3][7]:â23â It orbits the Sun at a distance of 2.7â3.3 AU once every 5 years and 3 months (1,915 days). Its orbit has an eccentricity of 0.10 and an inclination of 10° with respect to the ecliptic.[1]
The asteroid was first identified as 1941 SP at Uccle Observatory in September 1941. The body's observation arc begins with a precovery at Palomar Observatory in August 1951, more than 11 years prior to its official discovery observation at Goethe Link.[6]
Physical characteristics
In the Tholen classification, its spectral type is ambiguous, closest to the X-type asteroid and with some resemblance to the C-type asteroids,[1] while the overall spectral type of the Eos family is that of a K-type.[7]:â23â
Rotation period
As of 2017, no rotational lightcurve of Lampland has been obtained from photometric observations. The asteroid's rotation period, poles and shape remain unknown.[8]
Diameter and albedo
According to the survey carried out by the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, Lampland measures 15.448 kilometers in diameter and its surface has an albedo of 0.116.[4][5]
Naming
This minor planet was named after American astronomer Carl Lampland (1873â1951), a graduate of Indiana University, best known for his radiometric measurements of planetary temperatures.[2]
Lampland is also honored by a lunar and by a Martian crater. The name was proposed by Frank K. Edmondson, who initiated the Indiana Asteroid Program.[2] The official naming citation was published by the Minor Planet Center on 20 February 1971 (M.P.C. 3144).[9]
