141 Lumen

Lumen (minor planet designation: 141 Lumen) is a carbonaceous asteroid from the intermediate asteroid belt, approximately 130 kilometers in diameter. It is an identified Eunomian interloper.

141 Lumen
Discovery [1]
Discovered byP. P. Henry
Discovery date13 January 1875
Designations
(141) Lumen
Pronunciation/ˈluːmən/,[2] /ˈluːmɛn/[3]
main-belt · (middle)
Eunomian interloper
Orbital characteristics [1]
Epoch 31 July 2016 (JD 2457600.5)
Uncertainty parameter 0
Observation arc138.63 yr (50635 d)
Aphelion3.23723 AU (484.283 Gm)
Perihelion2.09253 AU (313.038 Gm)
2.66488 AU (398.660 Gm)
Eccentricity0.21477
4.35 yr (1589.0 d)
292.477°
0° 13m 35.623s / day
Inclination11.8967°
318.504°
58.1076°
Physical characteristics
Dimensions131.03±2.9 km [1]
130 km [4]
131.35 ± 5.21 km [5]
Mass(8.25 ± 5.77) × 1018 kg [5]
Mean density
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

    Description

    It was discovered on January 13, 1875, by the brothers Paul Henry and Prosper Henry, but Paul is the one who was given the credit for this discovery. It is named for Lumen: Récits de l'infini, a book by the astronomer Camille Flammarion.[8]

    Richard Binzel and Schelte 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 the Minor Planet Center.[10]

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    References
    1. "141 Lumen". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. Retrieved 12 May 2016.
    2. "lumen". Merriam-Webster Dictionary.
    3. "lumen". Oxford English Dictionary (3rd ed.). Oxford University Press. September 2005. (Subscription or UK public library membership required.)
    4. Supplemental IRAS Minor Planet Survey Archived June 23, 2006, at Archive.today
    5. Carry, B. (December 2012). "Density of asteroids". Planetary and Space Science. 73 (1): 98–118. arXiv:1203.4336. Bibcode:2012P&SS...73...98C. doi:10.1016/j.pss.2012.03.009. See Table 1.
    6. See Georgij A. Krasinsky et al. Hidden Mass in the Asteroid Belt, Icarus, Vol. 158, p. 98 (2002), for density estimates
    7. PDS lightcurve derived data
    8. Schmadel Lutz D. Dictionary of Minor Planet Names (fifth edition), Springer, 2003. ISBN 3-540-00238-3.
    9. Bus, S., Binzel, R. P. Small Main-belt Asteroid Spectroscopic Survey, Phase II. EAR-A-I0028-4-SBN0001/SMASSII-V1.0. NASA Planetary Data System, 2003.
    10. Lightcurve Results

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