5477 Holmes

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5477 Holmes
Discovery 
Synodic rotation period
2.9932±0.0002 h[10][a]
2.9940±0.0002 h[11]
2.99401±0.00007 h[12]
2.99408±0.00007 h[13]
2.9943±0.0002 h[6]
0.2849[9]
0.310±0.038[7][8]
E (assumed)[3]
13.99±0.03 (R)[12]
14.0[2]
14.26±0.54[14]
14.4[8][13]
14.445[3][9]

5477 Holmes, provisional designation 1989 UH2, is a

rotation period of 2.99 hours.[3] It was named for American amateur astronomer Robert Holmes.[1] The discovery of its 1-kilometer-sized minor-planet moon was announced in November 2005.[5][6]

Orbit and classification

Holmes is a core member of the

semi-major axis of 1.92 AU). Its orbit has an eccentricity of 0.08 and an inclination of 23° with respect to the ecliptic.[2] The body's observation arc begins with its official discovery observation at Palomar in October 1989.[1]

Physical characteristics

Holmes is an assumed

spectral type for members of the Hungaria family.[15]
: 23 

Rotation period

Since 2005, several rotational

U=3).[3][11] The asteroid's short period is near that of a fast rotator
.

Diameter and albedo

According to the survey carried out by the

albedo of 0.31,[7][8] while the Collaborative Asteroid Lightcurve Link adopts Petr Pravec's revised WISE-data, that is, an albedo of 0.2849 and a diameter of 3.21 kilometers based on an absolute magnitude of 14.445.[3][9] Johnston's Archive derives a diameter of 2.95 and 3.15 kilometers for the primary only and for the combined system, respectively.[5]

Satellite

The photometric observations obtained by Brian Warner and collaborators during 2–12 November 2005,

occultation events indicated the presence of a satellite 37% the size of its primary, which translates into an estimated diameter of 1.09–1.19 kilometers depending on the underlying size estimate of the primary.[3][5]

Naming

This

M.P.C. 73983).[16]

Notes

  1. ^ a b Lightcurve plot of 5477 Holmes, Palmer Divide Observatory, Brian D. Warner (2012). Rotation period 2.9932±0.0002 hours with a brightness amplitude of 0.10±0.01 mag. The second plot for the orbital period of the satellite gives a period of 24.37±0.01 hours. Quality code is 3. Summary figures at the LCDB.

References

  1. ^ a b c d e f g h "5477 Holmes (1989 UH2)". Minor Planet Center. Retrieved 17 May 2018.
  2. ^ a b c d "JPL Small-Body Database Browser: 5477 Holmes (1989 UH2)" (2017-06-04 last obs.). Jet Propulsion Laboratory. Retrieved 17 May 2018.
  3. ^ a b c d e f g h i j k "LCDB Data for (5477) Holmes". Asteroid Lightcurve Database (LCDB). Retrieved 17 May 2018.
  4. ^ a b "Asteroid 5477 Holmes". Small Bodies Data Ferret. Retrieved 15 May 2018.
  5. ^ a b c d e Johnston, Wm. Robert (21 September 2014). "Asteroids with Satellites Database – (5477) Holmes". Johnston's Archive. Retrieved 17 May 2018.
  6. ^
    Bibcode:2005CBET..288....1W
    . Retrieved 17 May 2018.
  7. ^
    S2CID 118745497
    .
  8. ^
    S2CID 118700974. (catalog
    )
  9. ^
    doi:10.1016/j.icarus.2012.07.026
    .
  10. ^
    ISSN 1052-8091
    .
  11. ^
    doi:10.1016/j.icarus.2015.12.019
    .
  12. ^
    doi:10.1016/j.icarus.2011.11.026
    .
  13. ^
    ISSN 1052-8091
    .
  14. S2CID 53493339
    .
  15. S2CID 119280014
    .
  16. ^ "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 17 May 2018.

External links

Retrieved from "https://en.wikipedia.org/w/index.php?title=5477_Holmes&oldid=1191441332"