904 Rockefellia

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904 Rockefellia
Discovery 
Perihelion
2.7366 AU
2.9967 AU
Eccentricity0.0868
5.19 yr (1,895 d)
178.00°
0° 11m 24s / day
Inclination15.147°
198.08°
251.78°
Physical characteristics
Mean diameter
  • 49.146±0.763 km[6]
  • 58.75±1.7 km[7]
  • 61.36±0.77 km[8]
Synodic rotation period
6.826±0.004 h[9]
  • 0.051±0.002[8]
  • 0.055±0.009[6]
  • 0.0561±0.003[7]
10.4[1][3]

904 Rockefellia (

rotation period of 6.8 hours and is rather spherical in shape. It was named after American philanthropist and oil industrialist John D. Rockefeller (1839–1937).[2]

Orbit and classification

Rockefellia is a non-

Heidelberg Observatory as well. The body's observation arc begins at Heidelberg on 6 December 1918, or five weeks after its official discovery observation.[1]

Naming

This

H 87).[2]

Physical characteristics

In the Tholen- and SMASS-like taxonomy of the

Small Solar System Objects Spectroscopic Survey (S3OS2), Rockefellia is a Caa and Ch type, respectively, both indicating that it is a hydrated, carbonaceous C-type asteroid.[5][10]

Rotation period

In December 2017, a rotational

U=1/2/1).[11][12][13]

Diameter and albedo

According to the survey carried out by the

mean diameter measurements published by the WISE team include (48.96±16.97 km), (52.127±3.976 km), (54.859±14.983 km) and (55.321±19.554 km) with corresponding albedos of (0.05±0.05), (0.071±0.010) and (0.04±0.03) and (0.042±0.033).[5][11]

On 13 May 2005, an

asteroid occultation gave a best-fit ellipse dimension of 59.0 × 59.0 kilometers.[5] These timed observations are taken when the asteroid passes in front of a distant star. However the quality of the measurement is rated poorly. A second, lower rated observation on 23 February 2013, measured an ellipse of 61.0 × 61.0 kilometers.[5]

References

  1. ^ a b c d e "904 Rockefellia (A918 UC)". Minor Planet Center. Retrieved 24 February 2020.
  2. ^
    ISBN 978-3-540-00238-3
    .
  3. ^ a b c d "JPL Small-Body Database Browser: 904 Rockefellia (A918 UC)" (2020-01-28 last obs.). Jet Propulsion Laboratory. Retrieved 24 February 2020.
  4. ^ a b "Asteroid 904 Rockefellia – Proper Elements". AstDyS-2, Asteroids – Dynamic Site. Retrieved 24 February 2020.
  5. ^ a b c d e f "Asteroid 904 Rockefellia". Small Bodies Data Ferret. Retrieved 24 February 2020.
  6. ^
    doi:10.1088/2041-8205/759/1/L8
    .
  7. ^
    Bibcode:2004PDSS...12.....T
    . Retrieved 24 February 2020.
  8. ^
    doi:10.1093/pasj/63.5.1117. (online, AcuA catalog p. 153
    )
  9. ^
    ISSN 1052-8091. Archived from the original
    (PDF) on 12 February 2020. Retrieved 24 February 2020.
  10. ^
    doi:10.1016/j.icarus.2004.06.006
    . Retrieved 24 February 2020.
  11. ^ a b c "LCDB Data for (904) Rockefellia". Asteroid Lightcurve Database (LCDB). Retrieved 24 February 2020.
  12. ^ Behrend, Raoul. "Asteroids and comets rotation curves – (904) Rockefellia". Geneva Observatory. Retrieved 24 February 2020.
  13. ISSN 1052-8091. Archived from the original
    (PDF) on 24 February 2020. Retrieved 24 February 2020.

External links
Retrieved from "https://en.wikipedia.org/w/index.php?title=904_Rockefellia&oldid=1229659494"