(3430) Bradfield

Asteroid (3430) Bradfield
Properties of the orbit ( animation ) Epoch: May 31, 2020 ( JD 2,459,000.5)
Orbit type	Main belt
Asteroid family	Agnia family
Major semi-axis	2.758 AU
eccentricity	0.099
Perihelion - aphelion	2.486 AU - 3.03 AU
Inclination of the orbit plane	4.4 °
Length of the ascending node	43.2 °
Argument of the periapsis	278.5 °
Time of passage of the perihelion	July 3, 2021
Sidereal period	4.58 a
Mean orbital velocity	17.9 km / s
Physical Properties
Medium diameter	(8.5 ± 0.3) km
Albedo	0.27
Absolute brightness	12.5 mag
Spectral class (according to SMASSII)	Sq
history
Explorer	CS Shoemaker
Date of discovery	October 9, 1980
Another name	1980 TF ₄ , 1974 HY ₁ , 1976 YS ₇
Source: Unless otherwise stated, the data comes from JPL Small-Body Database Browser . The affiliation to an asteroid family is automatically determined from the AstDyS-2 database . Please also note the note on asteroid items.

(3430) Bradfield is a main belt asteroid discovered by Carolyn Shoemaker at the Palomar Observatory on October 9, 1980 at a magnitude of 16.5 mag. Subsequently, the asteroid could already be detected on recordings that were made in April 1974 at the Cerro El Roble observatory and in 1976 and 1980 at various other observatories.

The asteroid was named on April 14, 1987 after the Australian amateur astronomer William Ashley Bradfield . Bradfield discovered a total of 18 comets between 1972 and 2004 .

Web links