3402 Wisdom

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3402 Wisdom
Discovery [1]
Discovered by E. Bowell
Discovery site Anderson Mesa Stn.
Discovery date 5 August 1981
Designations
MPC designation (3402) Wisdom
Named after
 Jack Wisdom [2]
(American planetary scientist)
1981 PB
Mars-crosser [1][3][4]
Orbital characteristics [1]
Epoch 23 March 2018 (JD 2458200.5)
Uncertainty parameter 0
Observation arc 41.20 yr (15,047 d)
Aphelion 2.7283 AU
Perihelion 1.5352 AU
2.1317 AU
Eccentricity 0.2798
3.11 yr (1,137 d)
285.37°
0° 19m 0.12s / day
Inclination 4.8531°
357.87°
303.69°
Earth MOID 0.5266 AU (205 LD)
Physical characteristics
Mean diameter
 2.05±0.49 km[5]
2.50±0.50 km[6]
2.59 km (derived)[4]
4.9949±0.0001 h[7]
4.9951±0.0001 h[a]
0.20 (assumed)[4]
0.283±0.113[6]
0.32±0.16[5]
S (assumed)[4]
14.85±0.11 (R)[a]
15.00[1][6]
15.13±0.26[8]
15.34[4][9]
15.44[5]

3402 Wisdom, provisional designation 1981 PB, is a stony asteroid and Mars-crosser on an eccentric orbit from the inner regions of the asteroid belt, approximately 2.5 kilometers (1.6 miles) in diameter. It was discovered on 5 August 1981, by American astronomer Edward Bowell at Lowell's Anderson Mesa Station near Flagstaff, Arizona, in the United States.[3] The presumed bright S-type asteroid has a rotation period of 4.99 hours.[4] It was named after American planetary scientist Jack Wisdom.[2]

Orbit and classification[edit]

Wisdom is a Mars-crossing asteroid, a member of a dynamically unstable group, located between the main belt and the near-Earth populations, and crossing the orbit of Mars at 1.666 AU. It orbits the Sun at a distance of 1.5–2.7 AU once every 3 years and 1 month (1,137 days; semi-major axis of 2.13 AU). Its orbit has an eccentricity of 0.28 and an inclination of 5° with respect to the ecliptic.[1]

The body's observation arc begins with a precovery taken at Palomar Observatory in February 1977, more than 4 years prior to its official discovery observation at Anderson Mesa.[3]

Physical characteristics[edit]

Wisdom is an assumed stony S-type asteroid.[4]

Rotation period[edit]

In October 2006, two rotational lightcurves of Wisdom were obtained from photometric observations at Ondřejov, Skalnaté pleso and Carbuncle Hill observatories (912;I00). Lightcurve analysis gave a well-defined rotation period of 4.9949 and 4.9951 hours with a high brightness variation of 0.75 and 0.74 magnitude, respectively (U=3/3).[7][a] A high brightness amplitude typically indicate that the body has an elongated rather than spherical shape.

Diameter and albedo[edit]

According to the survey carried out by the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, Wisdom measures 2.05 and 2.50 kilometers in diameter and its surface has an albedo of 0.32 and 0.283, respectively.[5][6] The Collaborative Asteroid Lightcurve Link assumes a standard albedo for stony asteroids of 0.20 and derives a diameter of 2.59 kilometers based on an absolute magnitude of 15.34.[4]

With a mean-diameter of approximately 2.5 kilometers, Wisdom is one of the smaller mid-sized Mars-crossing asteroids. It is assumed that there are up to 10 thousand Mars-crossers larger than 1 kilometer.[10] The largest members of this dynamical group are 132 Aethra, 323 Brucia, 2204 Lyyli and 512 Taurinensis, which measure between 43 and 25 kilometers in diameter.

Naming[edit]

This minor planet was named after Jack Wisdom (born 1953), a dynamicist and professor of planetary sciences at MIT. Wisdom pioneered in the study of the dynamics and long-term stability of the Solar System, and demonstrated the dynamical mechanism for the clearing of asteroid in the Kirkwood gaps of the asteroid belt.[2] The official naming citation was published by the Minor Planet Center on 2 February 1988 (M.P.C. 12803).[11]

Notes[edit]

  1. ^ a b c Pravec October (2006) web: lightcurve plot of (3402) Wisdom, with a rotation period 4.9951±0.0001 hours with a brightness amplitude of 0.74±0.02 mag. Quality Code of 3. Observation in the R-band. Absolute magnitude of 14.85±0.11. Summary figures at LCDB and Ondrejov Asteroid Photometry Project (see data sheet)

References[edit]

  1. ^ a b c d e "JPL Small-Body Database Browser: 3402 Wisdom (1981 PB)" (2018-04-24 last obs.). Jet Propulsion Laboratory. Retrieved 14 May 2018. 
  2. ^ a b c Schmadel, Lutz D. (2007). Dictionary of Minor Planet Names – (3402) Wisdom. Springer Berlin Heidelberg. pp. 283–284. ISBN 978-3-540-00238-3. Retrieved 26 October 2017. 
  3. ^ a b c "3402 Wisdom (1981 PB)". Minor Planet Center. Retrieved 26 October 2017. 
  4. ^ a b c d e f g h "LCDB Data for (3402) Wisdom". Asteroid Lightcurve Database (LCDB). Retrieved 26 October 2017. 
  5. ^ a b c d Nugent, C. R.; Mainzer, A.; Bauer, J.; Cutri, R. M.; Kramer, E. A.; Grav, T.; et al. (September 2016). "NEOWISE Reactivation Mission Year Two: Asteroid Diameters and Albedos" (PDF). The Astronomical Journal. 152 (3): 12. arXiv:1606.08923 Freely accessible. Bibcode:2016AJ....152...63N. doi:10.3847/0004-6256/152/3/63. Retrieved 14 May 2018. 
  6. ^ a b c d Alí-Lagoa, V.; Delbo', M. (July 2017). "Sizes and albedos of Mars-crossing asteroids from WISE/NEOWISE data" (PDF). Astronomy and Astrophysics. 603: 8. arXiv:1705.10263 Freely accessible. Bibcode:2017A&A...603A..55A. doi:10.1051/0004-6361/201629917. Retrieved 14 May 2018. 
  7. ^ a b Pray, Donald P.; Kusnirak, Peter; Galad, Adrian; Vilagi, Jozef; Kornos, Leos; Gajdos, Stefan; et al. (June 2007). "Lightcurve Analysis of Asteroids 2006 BQ6, 2942, 2943 3402, 3533, 6497, 6815, 7033, 12336, and 14211". The Minor Planet Bulletin. 34 (2): 44–46. Bibcode:2007MPBu...34...44P. ISSN 1052-8091. Retrieved 26 October 2017. 
  8. ^ 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:1506.00762 Freely accessible. Bibcode:2015Icar..261...34V. doi:10.1016/j.icarus.2015.08.007. Retrieved 26 October 2017. 
  9. ^ Pravec, Petr; Harris, Alan W.; Kusnirák, Peter; Galád, Adrián; Hornoch, Kamil (September 2012). "Absolute magnitudes of asteroids and a revision of asteroid albedo estimates from WISE thermal observations". Icarus. 221 (1): 365–387. Bibcode:2012Icar..221..365P. doi:10.1016/j.icarus.2012.07.026. Retrieved 26 October 2017. 
  10. ^ Steel, D. I. (August 1985). "Collisions in the solar systems. II - Asteroid impacts upon Mars". Monthly Notices of the Royal Astronomical Society: 369–381. Bibcode:1985MNRAS.215..369S. doi:10.1093/mnras/215.3.369. ISSN 0035-8711. Retrieved 26 October 2017. 
  11. ^ "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 26 October 2017. 

External links[edit]

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