141 Lumen

141 Lumen
	Orbital diagram
Discovery
Discovered by	P. P. Henry
Discovery date	13 January 1875
Designations
Pronunciation	/ˈluːmən/, /ˈluːmɛn/
Named after	Lumen: Récits de l'infini
Minor planet category	main-belt · (middle); Eunomian interloper
Orbital characteristics
	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	131.35 ± 5.21 km; (composite estimate); 131.03±2.9 km; 130 km
Mass	(2.01±0.28)×1018 kg
Mean density	2.33 g/cm3
Synodic rotation period	19.87 h (0.828 d); 0.820 d (19.67 h)
Geometric albedo	0.0540±0.002; 0.054
Spectral type	C
Absolute magnitude (H)	8.4

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

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.

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.

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.

Notes

↑ Calculated from its standard gravitational parameter GM = 0.134±0.019 km³/s².
↑ Assuming a diameter of 118 km.

References

1 2 3 4 5 "141 Lumen". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. Retrieved 12 May 2016.
↑ "lumen". Merriam-Webster.com Dictionary. Merriam-Webster. OCLC 1032680871.
↑ "lumen". Oxford English Dictionary (online ed.). Oxford University Press. (Subscription or participating institution membership required.)
↑ 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.
1 2 "Supplemental IRAS Minor Planet Survey". Archived from the original on 23 June 2006. Retrieved 12 May 2006.
1 2 Fuentes-Muñoz, Oscar; Farnocchia, Davide; Giorgini, Jon D.; Park, Ryan S. (1 December 2025). "Asteroid Mass Estimation by Mutual Perturbations During Close Encounters After Gaia Focused Product Release". The Astronomical Journal. 170 (6): 353. Bibcode:2025AJ....170..353F. doi:10.3847/1538-3881/ae0cc9. ISSN 0004-6256. S2CID 283347135.
↑ PDS lightcurve derived data
↑ Schmadel Lutz D. Dictionary of Minor Planet Names (fifth edition), Springer, 2003. ISBN 3-540-00238-3.
↑ 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.
↑ "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

[7] Calculated from its standard gravitational parameter GM = 0.134±0.019 km³/s².

[8] Assuming a diameter of 118 km.

[jpldata-1] 1 2 3 4 5 "141 Lumen". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. Retrieved 12 May 2016.

[2] "lumen". Merriam-Webster.com Dictionary. Merriam-Webster. OCLC 1032680871.

[3] "lumen". Oxford English Dictionary (online ed.). Oxford University Press. (Subscription or participating institution membership required.)

[Carry-2012-4] 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.

[IRAS-5] 1 2 "Supplemental IRAS Minor Planet Survey". Archived from the original on 23 June 2006. Retrieved 12 May 2006.

[Fuentes-Muñoz2025-6] 1 2 Fuentes-Muñoz, Oscar; Farnocchia, Davide; Giorgini, Jon D.; Park, Ryan S. (1 December 2025). "Asteroid Mass Estimation by Mutual Perturbations During Close Encounters After Gaia Focused Product Release". The Astronomical Journal. 170 (6): 353. Bibcode:2025AJ....170..353F. doi:10.3847/1538-3881/ae0cc9. ISSN 0004-6256. S2CID 283347135.

[9] PDS lightcurve derived data

[10] Schmadel Lutz D. Dictionary of Minor Planet Names (fifth edition), Springer, 2003. ISBN 3-540-00238-3.

[11] 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.

[12] "Lightcurve Results". Archived from the original on 25 July 2011. Retrieved 9 March 2008.