11409 Horkheimer

11409 Horkheimer
Discovery[1]
Discovered byLONEOS
Discovery siteAnderson Mesa Stn.
Discovery date19 March 1999
Designations
(11409) Horkheimer
Named after
Jack Horkheimer[1]
(American science communicator)
1999 FD9 · 1988 HY
1990 RH15
main-belt[1][2] · (outer)
Themis[3]
Orbital characteristics[2]
Epoch 23 March 2018 (JD 2458200.5)
Uncertainty parameter 0
Observation arc29.11 yr (10,632 d)
Aphelion3.5587 AU
Perihelion2.8167 AU
3.1877 AU
Eccentricity0.1164
5.69 yr (2,079 d)
109.84°
0° 10m 23.52s / day
Inclination2.2984°
115.92°
74.973°
Physical characteristics
15.355±0.100 km[4]
0.053±0.005[4]
C (Themis family)
12.8[1][2]

11409 Horkheimer, provisional designation 1999 FD9, is a Themistian asteroid from the outer regions of the asteroid belt, approximately 15 kilometers (9.3 miles) in diameter. It was discovered on 19 March 1999, by astronomers of the Lowell Observatory Near-Earth Object Search at Anderson Mesa Station near Flagstaff, Arizona. The likely C-type asteroid was named for American science communicator Jack Horkheimer.[1]

  1. ^ a b c d e Cite error: The named reference MPC-object was invoked but never defined (see the help page).
  2. ^ a b c Cite error: The named reference jpldata was invoked but never defined (see the help page).
  3. ^ Cite error: The named reference Ferret was invoked but never defined (see the help page).
  4. ^ a b Cite error: The named reference Masiero-2011 was invoked but never defined (see the help page).