34351 Decatur

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34351 Decatur
Discovery [1]
Discovered by L. Ball
Discovery site Emerald Lane Obs.
Discovery date 3 September 2000
MPC designation (34351) Decatur
Named after
Decatur (U.S. city)[2]
2000 RZ8 · 1996 YW3
1998 HF58
main-belt · (outer)
Orbital characteristics[1]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 0
Observation arc 25.00 yr (9,133 days)
Aphelion 3.1496 AU
Perihelion 2.7402 AU
2.9449 AU
Eccentricity 0.0695
5.05 yr (1,846 days)
0° 11m 42s / day
Inclination 1.2968°
Physical characteristics
Dimensions 3 km (generic at 0.25)[3]

34351 Decatur, provisional designation 2000 RZ8, is an asteroid from the outer region of the asteroid belt, approximately 3.5 kilometers in diameter. It was discovered on 3 September 2000, by American amateur astronomer Loren Ball at his Emerald Lane Observatory in Alabama, United States.[5] The asteroid was named after the city of Decatur, location of the discovering observatory.[2]

Classification and orbit[edit]

Decatur orbits the Sun in the outer main-belt at a distance of 2.7–3.1 AU once every 5 years and 1 month (1,846 days). Its orbit has an eccentricity of 0.07 and an inclination of 1° with respect to the ecliptic.[1]

The asteroid's observation arc begins 8 years prior to its official discovery observation, with a precovery taken by the Steward Observatory's Spacewatch survey at Kitt Peak in January 1992.[5]

Physical characteristics[edit]

According to the survey carried out by the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, Decatur measures 3.535 kilometers in diameter and its surface has an albedo of 0.224.[4] This is in line with a generic absolute magnitude-to-diameter conversion, that gives a diameter of 3 kilometers for an assumed albedo of 0.25 and an absolute magnitude of 14.7.[3]

Rotation period[edit]

As of 2017, Decatur's spectral type, rotation period and shape remain unknown.[1][6]


This minor planet was named after the city of Decatur in the U.S. state of Alabama, location of the discovering observatory and home of the discoverer. Decatur is located near NASA's Marshall Space Flight Center.[2] The official naming citation was published by the Minor Planet Center on 27 April 2002 (M.P.C. 45345).[7]


  1. ^ a b c d e "JPL Small-Body Database Browser: 34351 Decatur (2000 RZ8)" (2017-01-02 last obs.). Jet Propulsion Laboratory. Retrieved 27 June 2017. 
  2. ^ a b c Schmadel, Lutz D. (2007). Dictionary of Minor Planet Names – (34351) Decatur. Springer Berlin Heidelberg. p. 891. ISBN 978-3-540-00238-3. Retrieved 13 June 2016. 
  3. ^ a b "Absolute Magnitude (H)". NASA/JPL. Retrieved 13 June 2016. 
  4. ^ a b c Masiero, 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. Bibcode:2011ApJ...741...68M. arXiv:1109.4096Freely accessible. doi:10.1088/0004-637X/741/2/68. Retrieved 2 December 2016. 
  5. ^ a b "34351 Decatur (2000 RZ8)". Minor Planet Center. Retrieved 13 June 2016. 
  6. ^ "LCDB Data for (34351) Decatur". Asteroid Lightcurve Database (LCDB). Retrieved 27 June 2017. 
  7. ^ "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 13 June 2016. 

External links[edit]