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4608 Wodehouse

From Wikipedia, the free encyclopedia
Main belt asteroid

4608 Wodehouse
Discovery[1]
Discovered byH. Debehogne
Discovery siteLa Silla Obs.
Discovery date19 January 1988
Designations
(4608) Wodehouse
Pronunciation/ˈwʊdhs/
Named after
P. G. Wodehouse[2]
(English author)
1988 BW3 · 1954 SG
1978 GO4 · 1983 TD
main-belt · (inner)[3]
background[4] · Cerestrojan[5]
Orbital characteristics[1]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 0
Observation arc65.14 yr (23,794 days)
Aphelion2.8779AU
Perihelion1.8460 AU
2.3619 AU
Eccentricity0.2184
3.63yr (1,326 days)
103.56°
0° 16m 17.4s / day
Inclination7.4477°
203.17°
202.65°
Physical characteristics
Dimensions7.629±0.069 km[6]
7.912±0.161 km[7]
8.18 km(calculated)[3]
13.944±0.002h[a]
13.95±0.01 h[8]
0.1958±0.0233[7]
0.20(assumed)[3]
0.210±0.018[6]
L[9] · C(SDSS-MFB)[3]
12.8[1][3] · 12.9[7] · 13.24±0.20[9]

4608 Wodehouse, provisional designation1988 BW3, is a backgroundasteroid and suspectedtrojan ofCeres from the inner regions of theasteroid belt, approximately 8 kilometers in diameter. It was discovered on 19 January 1988, by Belgian astronomerHenri Debehogne at ESO'sLa Silla Observatory in northern Chile. The asteroid was named after English writerP. G. Wodehouse.[2]

Orbit and classification

[edit]

Wodehouse is a non-family asteroid from the main belt'sbackground population.[4] It orbits the Sun in theinner main-belt at a distance of 1.8–2.9 AU once every 3 years and 8 months (1,326 days). Its orbit has aneccentricity of 0.22 and aninclination of 7° with respect to theecliptic.[1] The body'sobservation arc begins with aprecovery taken atPalomar Observatory in January 1952, or 36 years prior to its official discovery observation at La Silla.[2]

Trojan of Ceres

[edit]

Long-term numerical integrations suggest, thatWodehouse is atrojan ofCeres, staying a 1:1orbital resonance with the onlydwarf planet of the asteroid belt. Other suspected co-orbitals are the asteroids855 Newcombia,1372 Haremari and8877 Rentaro.[5]

Physical characteristics

[edit]

Wodehouse is classified as a rareL-type asteroid byPan-STARRS photometric survey.[9] It has also been characterized as a common, carbonaceousC-type asteroid bySDSS-MFB (Masi Foglia Bus).[3]

Rotation period

[edit]

In December 2005, two rotationallightcurves ofWodehouse was obtained from photometric observations byDonald Pray andPetr Pravec in collaboration with several other observers. Lightcurve analysis gave arotation period of 13.944 and 13.95 hours with a brightness amplitude of 0.08 and 0.10magnitude, respectively (U=3/2).[8][a] A low brightness variation typically indicates, that the body has a spherical rather than elongated shape.

Diameter and albedo

[edit]

According to the survey carried out by theNEOWISE mission of NASA'sWide-field Infrared Survey Explorer,Wodehouse measures between 7.629 and 7.912 kilometers in diameter and its surface has analbedo between 0.1958 and 0.210.[6][7]

TheCollaborative Asteroid Lightcurve Link assumes a standard albedo for stony asteroids of 0.20 and calculates a diameter of 8.18 kilometers based on anabsolute magnitude of 12.8.[3]

Naming

[edit]

Thisminor planet was named after English writer and humoristP. G. Wodehouse (Sir Pelham Grenville Wodehouse; 1881–1975). He created several fictional characters who became familiar to the public over the years, including the jolly gentleman of leisureBertie Wooster and his sagacious valet,Jeeves. The body's name was suggested by Belgian astronomerJean Meeus.[2]

The official naming citation was published by theMinor Planet Center on 13 April 2006 (M.P.C. 56611).[10]

Notes

[edit]
  1. ^abPravec (2005) web: rotation period13.944±0.002 hours with a brightness amplitude of0.08 mag. Quality Code of 3. Summary figures for (4608) Wodehouse atLCDB andOndrejov Asteroid Photometry Project,seedata sheet.

References

[edit]
  1. ^abcd"JPL Small-Body Database Browser: 4608 Wodehouse (1988 BW3)" (2017-03-24 last obs.). Jet Propulsion Laboratory. Retrieved31 October 2017.
  2. ^abcd"4608 Wodehouse (1988 BW3)".Minor Planet Center. Retrieved31 October 2017.
  3. ^abcdefg"LCDB Data for (4608) Wodehouse". Asteroid Lightcurve Database (LCDB). Retrieved31 October 2017.
  4. ^ab"Asteroid 4608 Wodehouse – Proper Elements". AstDyS-2, Asteroids – Dynamic Site. Retrieved29 October 2019.
  5. ^abChristou, A. A. (April 2000). "Co-orbital objects in the main asteroid belt".Astronomy and Astrophysics.356:L71–L74.Bibcode:2000A&A...356L..71C.
  6. ^abcMasiero, Joseph R.; Mainzer, A. K.; Grav, T.; Bauer, J. M.; Cutri, R. M.; Dailey, J.; et al. (November 2011). "Main Belt Asteroids with WISE/NEOWISE. I. Preliminary Albedos and Diameters".The Astrophysical Journal.741 (2): 20.arXiv:1109.4096.Bibcode:2011ApJ...741...68M.doi:10.1088/0004-637X/741/2/68.S2CID 118745497.
  7. ^abcdMainzer, A.; Grav, T.; Masiero, J.; Hand, E.; Bauer, J.; Tholen, D.; et al. (November 2011). "NEOWISE Studies of Spectrophotometrically Classified Asteroids: Preliminary Results".The Astrophysical Journal.741 (2): 25.arXiv:1109.6407.Bibcode:2011ApJ...741...90M.doi:10.1088/0004-637X/741/2/90.S2CID 118700974.
  8. ^abPray, Donald P.; Galad, Adrian; Gajdos, Stefan; Vilagi, Jozef; Cooney, Walt; Gross, John; et al. (December 2006). "Lightcurve analysis of asteroids 53, 698, 1016, 1523, 1950, 4608, 5080 6170, 7760, 8213, 11271, 14257, 15350 and 17509".The Minor Planet Bulletin.33 (4):92–95.Bibcode:2006MPBu...33...92P.ISSN 1052-8091.
  9. ^abcVeres, 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:1506.00762.Bibcode:2015Icar..261...34V.doi:10.1016/j.icarus.2015.08.007.S2CID 53493339.
  10. ^"MPC/MPO/MPS Archive".Minor Planet Center. Retrieved31 October 2017.

External links

[edit]
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