2829 Bobhope

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2829 Bobhope
Discovery [1]
Discovered by E. L. Johnson
Discovery site Johannesburg Obs.
Discovery date 9 August 1948
MPC designation 2829 Bobhope
Named after
Bob Hope
(American vaudevillian)[2]
1948 PK · 1942 JH
1952 DU2 · 1952 HR
1959 RV · 1972 YZ
main-belt · (outer)[3]
Meliboea family
Orbital characteristics[1]
Epoch 16 February 2017 (JD 2457800.5)
Uncertainty parameter 0
Observation arc 68.25 yr (24,930 days)
Aphelion 3.6736 AU
Perihelion 2.5040 AU
3.0888 AU
Eccentricity 0.1893
5.43 yr (1,983 days)
0° 10m 53.76s / day
Inclination 14.314°
Physical characteristics
Dimensions 38.00 km (derived)[3]
38.25±2.4 km[4]
40.89±0.87 km[5]
40.98±0.54 km[6]
41.361±0.224 km[7]
44.804±0.511 km[8]
5.013±0.003 h[9]
6.0888±0.0007 h[a]
0.0586 (derived)[3]
10.3[4][6][8] · 10.70[5] · 10.8[1][3] · 10.95±0.48[10]

2829 Bobhope, provisional designation 1948 PK, is a carbonaceous asteroid from the outer region of the asteroid belt, approximately 40 kilometers in diameter. It was discovered on 9 August 1948, by South African astronomer Ernest Leonard Johnson at Union Observatory in Johannesburg.[11]

The C-type asteroid is a member of the Meliboea family.[citation needed] It orbits the Sun at a distance of 2.5–3.7 AU once every 5 years and 5 months (1,983 days). Its orbit has an eccentricity of 0.19 and an inclination of 14° with respect to the ecliptic.[1] It was first observed as 1942 JH at the discovering observatory in May 1942, yet the astrometric data from this observation remained unused to extend its observation arc prior to the official discovery date.[11]

A rotational light-curve for this asteroid was obtained from photometric observations by astronomer Landy Carbo at Oakley Southern Sky Observatory (E09), Australia, and at the U.S. Oakley Observatory in September 2008. It gave it a rotation period of 5.013±0.003 hours with a brightness variation of 0.46±0.08 magnitude (U=2).[9] A previously published light-curve by Raoul Behrend gave a somewhat longer period of 6.0888±0.0007 hours with an amplitude of 0.50 (U=2).[a]

According to the surveys carried out by the Infrared Astronomical Satellite IRAS, the Japanese Akari satellite, and NASA's Wide-field Infrared Survey Explorer with its subsequent NEOWISE mission, the asteroid measures between 38.2 and 44.8 kilometers in diameter and its surface has an albedo between 0.055 and 0.092.[4][5][6][7][8] The Collaborative Asteroid Lightcurve Link derives an albedo of 0.0586 and a diameter of 38.0 kilometers, based on an absolute magnitude of 10.8.[3]

The minor planet was named for English-born, American comedian Bob Hope (1903–2003), star of innumerable feature film, theater, TV and radio productions, and known for the horror comedy Cat and the Canary (1939). He hosted the Academy Awards more than any other host, and received several Honorary and Special Oscars himself. He also received more than forty honorary doctorates.[2] Naming citation was published on 1 September 1993 (M.P.C. 22496).[12]


  1. ^ a b Behrend 2000 () web: rotation period 6.0888±0.0007 hours with a brightness amplitude of 0.50 mag (U=2). Summary figures at Collaborative Asteroid Lightcurve Link (CALL) for (2829) Bobhope, corresponding entry not found Behrend (Geneva Obs.)
  1. ^ a b c d "JPL Small-Body Database Browser: 2829 Bobhope (1948 PK)" (2016-11-10 last obs.). Jet Propulsion Laboratory. Retrieved 6 December 2016. 
  2. ^ a b Schmadel, Lutz D. (2007). Dictionary of Minor Planet Names – (2829) Bobhope. Springer Berlin Heidelberg. p. 232. ISBN 978-3-540-00238-3. Retrieved 27 October 2016. 
  3. ^ a b c d e f "LCDB Data for (2829) Bobhope". Asteroid Lightcurve Database (LCDB). Retrieved 27 October 2016. 
  4. ^ a b c d Tedesco, E. F.; Noah, P. V.; Noah, M.; Price, S. D. (October 2004). "IRAS Minor Planet Survey V6.0". NASA Planetary Data System. Bibcode:2004PDSS...12.....T. Retrieved 27 October 2016. 
  5. ^ a b c d Masiero, Joseph R.; Mainzer, A. K.; Grav, T.; Bauer, J. M.; Cutri, R. M.; Nugent, C.; et al. (November 2012). "Preliminary Analysis of WISE/NEOWISE 3-Band Cryogenic and Post-cryogenic Observations of Main Belt Asteroids". The Astrophysical Journal Letters. 759 (1): 5. arXiv:1209.5794Freely accessible. Bibcode:2012ApJ...759L...8M. doi:10.1088/2041-8205/759/1/L8. Retrieved 27 October 2016. 
  6. ^ a b c d Usui, Fumihiko; Kuroda, Daisuke; Müller, Thomas G.; Hasegawa, Sunao; Ishiguro, Masateru; Ootsubo, Takafumi; et al. (October 2011). "Asteroid Catalog Using Akari: AKARI/IRC Mid-Infrared Asteroid Survey" (PDF). Publications of the Astronomical Society of Japan. 63 (5): 1117–1138. Bibcode:2011PASJ...63.1117U. doi:10.1093/pasj/63.5.1117. Retrieved 27 October 2016. 
  7. ^ a b c Masiero, Joseph R.; Grav, T.; Mainzer, A. K.; Nugent, C. R.; Bauer, J. M.; Stevenson, R.; et al. (August 2014). "Main-belt Asteroids with WISE/NEOWISE: Near-infrared Albedos". The Astrophysical Journal. 791 (2): 11. arXiv:1406.6645Freely accessible. Bibcode:2014ApJ...791..121M. doi:10.1088/0004-637X/791/2/121. Retrieved 27 October 2016. 
  8. ^ a b c d Mainzer, A.; Grav, T.; Masiero, J.; Hand, E.; Bauer, J.; Tholen, D.; et al. (November 2011). "NEOWISE Studies of Spectrophotometrically Classified Asteroids: Preliminary Results" (PDF). The Astrophysical Journal. 741 (2): 25. arXiv:1109.6407Freely accessible. Bibcode:2011ApJ...741...90M. doi:10.1088/0004-637X/741/2/90. Retrieved 27 October 2016. 
  9. ^ a b Carbo, Landy; Kragh, Katherine; Krotz, Jonathan; Meiers, Andrew; Shaffer, Nelson; Torno, Steven; et al. (July 2009). "Asteroid Lightcurve Analysis at the Oakley Southern Sky Observatory and Oakley Observatory: 2008 September and October". The Minor Planet Bulletin. 36 (3): 91–94. Bibcode:2009MPBu...36...91C. ISSN 1052-8091. Retrieved 27 October 2016. 
  10. ^ Veres, Peter; Jedicke, Robert; Fitzsimmons, Alan; Denneau, Larry; Granvik, Mikael; Bolin, Bryce; et al. (November 2015). "Absolute magnitudes and slope parameters for 250,000 asteroids observed by Pan-STARRS PS1 - Preliminary results". Icarus. 261: 34–47. arXiv:1506.00762Freely accessible. Bibcode:2015Icar..261...34V. doi:10.1016/j.icarus.2015.08.007. Retrieved 27 October 2016. 
  11. ^ a b "2829 Bobhope (1948 PK)". Minor Planet Center. Retrieved 27 October 2016. 
  12. ^ "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 27 October 2016. 

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