C/2004 F4 (Bradfield)

C/2004 F4 (Bradfield)
The comet in the dawn sky
Discovery[1]
Discovered byWilliam A. Bradfield
Discovery date23 March 2004
Orbital characteristics[2]
Epoch2004-Jun-01.0
Observation arc155 days
Aphelion475 AU
Perihelion0.168 AU
Semi-major axis238 AU
Eccentricity0.99929
Orbital period3,660 years
Inclination63.16°
222.78°
Argument of
periapsis		332.79°
Last perihelion17 April 2004
Earth MOID0.32 AU
Jupiter MOID0.56 AU
Comet total
magnitude (M1)		11.3

C/2004 F4 (Bradfield) is a non-periodic comet discovered by amateur astronomer William A. Bradfield on 23 March 2004.[1] The comet brightened to an apparent magnitude of about 3.3.[3]

  1. ^ a b "IAUC 8319: C/2004 F4". www.cbat.eps.harvard.edu. 12 April 2004. Retrieved 28 August 2023.
  2. ^ "Small-Body Database Lookup: C/2004 F4 (Bradfield)". ssd.jpl.nasa.gov.
  3. ^ "Brightest comets seen since 1935". www.icq.eps.harvard.edu. Retrieved 26 August 2023.