1125 China

Source: Wikipedia, the free encyclopedia.
For 1928 UF and 1986 QK1, the asteroid discovered in 1928, lost, and then rediscovered in 1986, see 3789 Zhongguo.

1125 China
Y. C. Chang[2]
Discovery sitePurple Mountain Obs.
Discovery date30 October 1957
Designations
(1125) China
Named after
China (country)[2]
1957 UN1 · 1959 EL
1971 KX · 1974 VM
A909 BE
Synodic rotation period
5.367±0.002 h[12]
5.45±0.02 h[13][a]
  • (132.0°, −46.0°) (λ1/β1)[5]
  • (305.0°, −49.0°) (λ2/β2)[5]
0.057 (assumed)[10]
0.057±0.004[9]
0.06±0.03[7]
0.063±0.009[11]
0.08±0.06[6]
0.0860±0.0223[8]
C (assumed)[10]
11.20[8][11] · 11.26±0.19[12] · 11.60[1][10][7] · 11.70[6]

1125 China (

lost asteroid at the time, but was eventually rediscovered and given the new designation 3789 Zhongguo. "Zhongguo" means "China" in Chinese (1928 UF).[2][14]

Orbit and classification

China is a non-

Heidelberg Observatory in January 1909, where the body's observation arc begins three week later in February 1909, or more than 48 years prior to its official discovery observation at Nanking, China.[3]

Naming

This

M.P.C. 13179).[2][15]

Accidentally usurped designation

Main article: 3789 Zhongguo

While studying in Chicago in 1928,

Zhongguo is the Chinese word for China.[14]

Physical characteristics

China is an assumed carbonaceous C-type asteroid.[10]

Rotation period and poles

In February 2009, a rotational

U=3-).[13][a]

Published in 2016, an additional lightcurve was modeled from photometric data obtained by a large international collaboration of astronomers. Modelling gave a concurring sidereal rotation period of 5.36863±0.00005 hours, as well as two spin axes of (132.0°, −46.0°) and (305.0°, −49.0°) in ecliptic coordinates.[16]

Diameter and albedo

According to the surveys carried out by the Japanese

albedo between 0.057 and 0.0860.[6][7][8][9][11]

The Collaborative Asteroid Lightcurve Link assumes a standard albedo for carbonaceous asteroids of 0.057 and calculates a diameter of 26.64 kilometers based on an absolute magnitude of 11.6.[10]

Notes

  1. ^ a b Stephens (2013): lightcurve plot of (1125) China, rotation period 5.45±0.02 hours. Summary figures at the LCDB

References

  1. ^ a b c d e "JPL Small-Body Database Browser: 1125 China (1957 UN1)" (2017-10-29 last obs.). Jet Propulsion Laboratory. Retrieved 23 January 2018.
  2. ^
    ISBN 978-3-540-00238-3
    .
  3. ^ a b c "1125 China (1957 UN1)". Minor Planet Center. Retrieved 23 January 2018.
  4. ^ a b "Asteroid 1125 China – Proper Elements". AstDyS-2, Asteroids – Dynamic Site. Retrieved 13 March 2020.
  5. ^ a b c d "Asteroid 1125 China". Small Bodies Data Ferret. Retrieved 13 March 2020.
  6. ^
    doi:10.3847/0004-6256/152/3/63
    .
  7. ^
    S2CID 9341381
    .
  8. ^
    S2CID 35447010
    .
  9. ^
    S2CID 118745497
    .
  10. ^ a b c d e f "LCDB Data for (1125) China". Asteroid Lightcurve Database (LCDB). Retrieved 23 January 2018.
  11. ^
    doi:10.1093/pasj/63.5.1117. (online, AcuA catalog p. 153
    )
  12. ^
    ISSN 1052-8091. Archived from the original
    (PDF) on 26 November 2021. Retrieved 13 March 2020.
  13. ^
    ISSN 1052-8091
    .
  14. ^
    ISBN 978-3-540-00238-3
    .
  15. ^ "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 23 January 2018.
  16. S2CID 119112278
    .

External links
Retrieved from "https://en.wikipedia.org/w/index.php?title=1125_China&oldid=1195680101"