928 Hildrun

928 Hildrun
Modelled shape of Hildrun from its lightcurve
Discovery [1]
Discovered byK. Reinmuth
Discovery siteHeidelberg Obs.
Discovery date23 February 1920
Designations
(928) Hildrun
Named after
Name picked from the almanac
Lahrer Hinkender Bote [2]
A920 DC · 1920 GP
1959 EE1
main-belt [1][3] · (outer)
background [4][5]
Orbital characteristics [3]
Epoch 31 May 2020 (JD 2459000.5)
Uncertainty parameter 0
Observation arc99.79 yr (36,447 d)
Aphelion3.5999 AU
Perihelion2.6698 AU
3.1349 AU
Eccentricity0.1484
5.55 yr (2,027 d)
9.2453°
0° 10m 39.36s / day
Inclination17.653°
129.83°
21.894°
Physical characteristics
  • 62.817±0.293 km[6]
  • 64.04±1.09 km[7]
  • 66.49±1.7 km[8]
14.13±0.03 h[9][a]
  • (247.0°, −29.0°) (λ1/β1)[5]
  • (86.0°, −63.0°) (λ2/β2)[5]
  • 0.0365±0.002[8]
    0.040±0.001[7]
  • 0.043±0.007[6]
X (S3OS2)[10]
10.0[1][3]

928 Hildrun (prov. designation: A920 DC or 1920 GP), is a dark background asteroid, approximately 64 kilometers (40 miles) in diameter, located in the outer region of the asteroid belt. It was discovered on 23 February 1920, by astronomer Karl Reinmuth at the Heidelberg-Königstuhl State Observatory in southwest Germany.[1] The X-type asteroid has a rotation period of 14.1 hours.[a] It was named "Hildrun", a common German female name unrelated to the discoverer's contemporaries, that was taken from the almanac Lahrer Hinkender Bote.[2]

  1. ^ a b c d Cite error: The named reference MPC-object was invoked but never defined (see the help page).
  2. ^ a b Cite error: The named reference springer was invoked but never defined (see the help page).
  3. ^ a b c Cite error: The named reference jpldata was invoked but never defined (see the help page).
  4. ^ Cite error: The named reference AstDys-object was invoked but never defined (see the help page).
  5. ^ a b c Cite error: The named reference Ferret was invoked but never defined (see the help page).
  6. ^ a b Cite error: The named reference Masiero-2014 was invoked but never defined (see the help page).
  7. ^ a b Cite error: The named reference AKARI was invoked but never defined (see the help page).
  8. ^ a b Cite error: The named reference SIMPS was invoked but never defined (see the help page).
  9. ^ Cite error: The named reference Warner-2004d was invoked but never defined (see the help page).
  10. ^ Cite error: The named reference Lazzaro-2004 was invoked but never defined (see the help page).


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