 Orbital diagram | |
| Discovery[1] | |
|---|---|
| Discovered by | P. P. Henry |
| Discovery date | 13 January 1875 |
| Designations | |
| (141) Lumen | |
| Pronunciation | /ˈluːmən/,[2]/ˈluːmɛn/[3] |
Named after | Lumen: Récits de l'infini |
| main-belt · (middle) Eunomian interloper | |
| Orbital characteristics[1] | |
| Epoch 31 July 2016 (JD 2457600.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 138.63 yr (50635 d) |
| Aphelion | 3.23723 AU (484.283 Gm) |
| Perihelion | 2.09253 AU (313.038 Gm) |
| 2.66488 AU (398.660 Gm) | |
| Eccentricity | 0.21477 |
| 4.35yr (1589.0d) | |
| 292.477° | |
| 0° 13m 35.623s / day | |
| Inclination | 11.8967° |
| 318.504° | |
| 58.1076° | |
| Physical characteristics | |
| Dimensions | 131.03±2.9 km[1] 130 km[4] 131.35 ± 5.21 km[5] |
| Mass | (8.25 ± 5.77) × 1018 kg[5] |
Meandensity | 1.4 g/cm3(estimate)[6] 6.95 ± 4.93 g/cm3[5] |
| 19.87 h (0.828 d)[1] 0.820 d (19.67 h)[7] | |
| 0.0540±0.002[1] 0.054[4] | |
| C | |
| 8.4 | |
141 Lumen is a carbonaceousasteroid from the intermediateasteroid belt, approximately 130 kilometers in diameter. It is an identifiedEunomian interloper.
It was discovered on January 13, 1875, by the brothersPaul Henry and Prosper Henry, but Paul is the one who was given the credit for this discovery. It is named forLumen: Récits de l'infini, a book by the astronomerCamille Flammarion.[8]
Richard Binzel andSchelte Bus further added to the knowledge about this asteroid in a light-curve survey published in 2003. This project was known as Small Main-belt Asteroid Spectroscopic Survey, Phase II or SMASSII, which built on a previous survey of the main-belt asteroids. The visible-wavelength (0.435–0.925 micrometre) spectra data was gathered between August 1993 and March 1999.[9]
Lightcurve data has also been recorded by observers at the Antelope Hill Observatory, which has been designated as an official observatory by theMinor Planet Center.[10]
