141 Lumen

141 Lumen is a carbonaceous asteroid from the intermediate asteroid belt, approximately 130 kilometers in diameter. It is an identified Eunomian interloper.

141 Lumen

Orbital diagram
Discovery[1]
Discovered by	P. P. Henry
Discovery date	13 January 1875
Designations
MPC designation	(141) Lumen
Pronunciation	/ˈluːmən/,[2] /ˈluːmɛn/[3]
Named after	Lumen: Récits de l'infini
Minor planet category	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)
Semi-major axis	2.66488 AU (398.660 Gm)
Eccentricity	0.21477
Orbital period (sidereal)	4.35 yr (1589.0 d)
Mean anomaly	292.477°
Mean motion	0° 13m 35.623s / day
Inclination	11.8967°
Longitude of ascending node	318.504°
Argument of perihelion	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]
Mean density	1.4 g/cm3 (estimate)[6] 6.95 ± 4.93 g/cm3[5]
Synodic rotation period	19.87 h (0.828 d)[1] 0.820 d (19.67 h)[7]
Geometric albedo	0.0540±0.002[1] 0.054[4]
Spectral type	C
Absolute magnitude (H)	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]

References

1. "141 Lumen". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. Retrieved 12 May 2016.
2. "lumen". Merriam-Webster.com Dictionary. Merriam-Webster.
3. "lumen". Oxford English Dictionary (Online ed.). Oxford University Press. (Subscription or participating institution 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". Archived from the original on 25 July 2011. Retrieved 9 March 2008.

External links

• Lightcurve plot of (141) Lumen Archived 5 February 2023 at the Wayback Machine, Antelope Hills Observatory
• 141 Lumen at AstDyS-2, Asteroids—Dynamic Site
  • Ephemeris · Observation prediction · Orbital info · Proper elements · Observational info
• 141 Lumen at the JPL Small-Body Database
  • Close approach · Discovery · Ephemeris · Orbit viewer · Orbit parameters · Physical parameters