3430 Bradfield

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Bradfield
Discovery
Discovered by Carolyn S. Shoemaker
Discovery site Palomar
Discovery date 9 October 1980
Designations
MPC designation (3430) Bradfield
Named after
William A. Bradfield
1980 TF4
Orbital characteristics[1]
Epoch 13 January 2016 (JD 2457400.5)
Uncertainty parameter 0
Observation arc 15054 days (41.22 yr)
Aphelion 3.0270506 AU (452.84032 Gm)
Perihelion 2.4895218 AU (372.42716 Gm)
2.758286 AU (412.6337 Gm)
Eccentricity 0.0974389
4.58 yr (1673.2 d)
289.9693°
0° 12m 54.546s / day
Inclination 4.428355°
43.22891°
278.68740°
Earth MOID 1.47993 AU (221.394 Gm)
Jupiter MOID 2.23241 AU (333.964 Gm)
Jupiter Tisserand parameter 3.331
Physical characteristics
12.4

3430 Bradfield (1980 TF4) is a main-belt asteroid discovered on October 9, 1980, by Carolyn S. Shoemaker at Palomar.

Named in honor of William A. Bradfield, rocket engineer of Dernancourt, South Australia. Discoverer of eighteen comets, Bradfield was chiefly responsible for the greatly increased rate of discovery of bright comets from the southern hemisphere during the 1970s and 1980s.

With an absolute magnitude of 12.4, asteroid Bradfield is assumed to be 9–20 km in diameter.[2]

References[edit]

  1. ^ "3430 Bradfield (1980 TF4)". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. Retrieved 14 April 2016. 
  2. ^ "Absolute Magnitude (H)". NASA/JPL. Retrieved 2014-06-16. 

External links[edit]