954 Li

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954 Li
Discovery [1]
Discovered by K. Reinmuth
Discovery site Heidelberg
Discovery date4 August 1921
Designations
(954) Li
1905 UN ·1920 GC ·1921 PC ·1943 PE ·1952 BE2 [1]
Orbital characteristics [2]
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)
3.1313 AU (468.44 Gm)
Eccentricity 0.17239
5.54 yr (2023.9 d)
34.454°
0° 10m 40.332s / day
Inclination 1.1694°
163.235°
151.503°
Physical characteristics
26.03±0.41 km [3] : 5  [a]
7.207±0.002 h [4] : 604 
0.06 (geometric) [2]
FCX [5] : 468 
10.16 (JPL) [2]

    954 Li is a main belt asteroid and member of the Themis family. [5] 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. [1] Classified as an FCX-type asteroid under the Tholen classification scheme, Li's spectrum may indicate aqueous alteration. [5] : 468  The asteroid is estimated to be around 52 kilometres (32 mi) in size, [3] : 5  and observations of its lightcurve—variations in its observed brightness—indicate that it rotates once every 7.2 hours. [4] : 604 

    Contents

    Notes

    1. ↑ Reported as a diameter of 52.06±0.81 km. [3] : 5 

    References

    1. 1 2 3 "(954) Li = 1905 UN = 1920 GC = 1921 PC = 1943 PE = 1952 BE2". Minor Planet Center . Retrieved 30 August 2025.
    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.
    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.
    4. 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.
    5. 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.


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