954 Li

954 Li
Discovery
Discovered by	K. Reinmuth
Discovery site	Heidelberg
Discovery date	4 August 1921
Designations
Alternative designations	1905 UN · 1920 GC · 1921 PC · 1943 PE · 1952 BE2
Orbital characteristics
	Epoch 31 July 2016 (JD 2457600.5)
	Uncertainty parameter 0
Observation arc	109.65 yr (40051 days)
Aphelion	3.6711 AU (549.19 Gm)
Perihelion	2.5915 AU (387.68 Gm)
Semi-major axis	3.1313 AU (468.44 Gm)
Eccentricity	0.17239
Orbital period (sidereal)	5.54 yr (2023.9 d)
Mean anomaly	34.454°
Mean motion	0° 10m 40.332s / day
Inclination	1.1694°
Longitude of ascending node	163.235°
Argument of perihelion	151.503°
Physical characteristics
Mean radius	26.03±0.41 km
Synodic rotation period	7.207±0.002 h
Geometric albedo	0.06 (geometric)
Spectral type	FCX
Absolute magnitude (H)	10.16 (JPL)

954 Li is a main belt asteroid and member of the Themis family. It was discovered by Karl Wilhelm Reinmuth on 4 August 1921 and was named after his wife Lina Alstede Reinmuth, who also had 955 Alstede named after her. Classified as an FCX-type asteroid under the Tholen classification scheme, Li's spectrum may indicate aqueous alteration.^: 468 The asteroid is estimated to be around 52 kilometres (32 mi) in size,^: 5 and observations of its lightcurve—variations in its observed brightness—indicate that it rotates once every 7.2 hours.^: 604

Notes

↑ Reported as a diameter of 52.06±0.81 km.^: 5

References

1 2 3 "(954) Li = 1905 UN = 1920 GC = 1921 PC = 1943 PE = 1952 BE2". Minor Planet Center. Retrieved 30 August 2025.
1 2 3 "954 Li (A921 PC)". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. Archived from the original on 17 March 2024. Retrieved 30 August 2025.
1 2 3 Fornasier, S.; Lantz, C.; Perna, D.; Campins, H.; Barucci, M. A.; Nevsorny, D. (May 2016). "Spectral variability on primitive asteroids of the Themis and Beagle families: Space weathering effects or parent body heterogeneity?". Icarus. 269: 1–14. arXiv:1601.05277. Bibcode:2016Icar..269....1F. doi:10.1016/j.icarus.2016.01.002.
1 2 Shevchenko, Vasilij G.; Chiorny, Vasilij G.; Gaftonyuk, Ninel M.; Krugly, Yury N.; Belskaya, Irina N.; Tereschenko, Igor A.; Velichko, Fiodor P. (August 2008). "Asteroid observations at low phase angles: III. Brightness behavior of dark asteroids". Icarus. 196 (2): 601–611. Bibcode:2008Icar..196..601S. doi:10.1016/j.icarus.2008.03.015.
1 2 3 Florczak, M.; Lazzaro, D.; Mothé-Diniz, T.; Angeli, C. A.; Betzler, A. S. (February 1999). "A spectroscopic study of the Themis family". Astronomy and Astrophysics Supplement. 134: 463–471. Bibcode:1999A&AS..134..463F. doi:10.1051/aas:1999150.

External links

954 Li at AstDyS-2, Asteroids—Dynamic Site
- Ephemeris · Observation prediction · Orbital info · Proper elements · Observational info
954 Li at the JPL Small-Body Database
- Close approach · Discovery · Ephemeris · Orbit viewer · Orbit parameters · Physical parameters

This article about a C-type asteroid native to the asteroid belt is a stub. You can help Wikipedia by adding missing information.

[4] Reported as a diameter of 52.06±0.81 km.^: 5

[MPC-object-1] 1 2 3 "(954) Li = 1905 UN = 1920 GC = 1921 PC = 1943 PE = 1952 BE2". Minor Planet Center. Retrieved 30 August 2025.

[jpldata-2] 1 2 3 "954 Li (A921 PC)". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. Archived from the original on 17 March 2024. Retrieved 30 August 2025.

[fornasier2016-3] 1 2 3 Fornasier, S.; Lantz, C.; Perna, D.; Campins, H.; Barucci, M. A.; Nevsorny, D. (May 2016). "Spectral variability on primitive asteroids of the Themis and Beagle families: Space weathering effects or parent body heterogeneity?". Icarus. 269: 1–14. arXiv:1601.05277. Bibcode:2016Icar..269....1F. doi:10.1016/j.icarus.2016.01.002.

[shevchenko2008-5] 1 2 Shevchenko, Vasilij G.; Chiorny, Vasilij G.; Gaftonyuk, Ninel M.; Krugly, Yury N.; Belskaya, Irina N.; Tereschenko, Igor A.; Velichko, Fiodor P. (August 2008). "Asteroid observations at low phase angles: III. Brightness behavior of dark asteroids". Icarus. 196 (2): 601–611. Bibcode:2008Icar..196..601S. doi:10.1016/j.icarus.2008.03.015.

[florczak1999-6] 1 2 3 Florczak, M.; Lazzaro, D.; Mothé-Diniz, T.; Angeli, C. A.; Betzler, A. S. (February 1999). "A spectroscopic study of the Themis family". Astronomy and Astrophysics Supplement. 134: 463–471. Bibcode:1999A&AS..134..463F. doi:10.1051/aas:1999150.