14871 Pyramus

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14871 Pyramus
Discovery
0.06)[6]
9.180±0.302[7]
0.069±0.020[7]
13.9[3]

14871 Pyramus, provisional designation 1990 TH7, is a dark Zhongguo

Pyramus from classical mythology.[2]

Orbit and classification

Pyramus is a non-

Griqua group, the orbits of the Zhongguos are stable over half a billion years.[4][5][8]

It orbits the Sun in the

semi-major axis of 3.3 AU). Its orbit has an eccentricity of 0.22 and an inclination of 1° with respect to the ecliptic.[3] The first precovery was taken at Palomar Observatory in 1954, extending the asteroid's observation arc by 36 years prior to its discovery.[1]

Physical characteristics

Diameter and albedo

According to the survey carried out by NASA's

albedo of 0.069.[7] This is in line with a generic absolute magnitude-to-diameter conversion that gives a diameter of 4 to 9 kilometers for an albedo between 0.05 and 0.25.[6]

Lightcurves

As of 2018, no rotational lightcurve has been obtained of Pyramus. The asteroid's

rotation period, pole and shape remain unknown.[3][9]

Naming

This

M.P.C. 47301).[10]

References

  1. ^ a b c d "14871 Pyramus (1990 TH7)". Minor Planet Center. Retrieved 6 April 2016.
  2. ^ .
  3. ^ a b c d e "JPL Small-Body Database Browser: 14871 Pyramus (1990 TH7)" (2017-03-27 last obs.). Jet Propulsion Laboratory. Retrieved 26 June 2017.
  4. ^ a b "Asteroid 14871 Pyramus – Proper Elements". AstDyS-2, Asteroids – Dynamic Site. Retrieved 29 October 2019.
  5. ^ . Retrieved 6 April 2016.
  6. ^ a b "Absolute Magnitude (H)". NASA/JPL. Archived from the original on 2 March 2001. Retrieved 6 April 2016.
  7. ^ . Retrieved 3 December 2016.
  8. . Retrieved 6 April 2016.
  9. ^ "LCDB Data for (14871) Pyramus". Asteroid Lightcurve Database (LCDB). Retrieved 26 June 2017.
  10. ^ "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 20 May 2016.

External links