624 Hektor

624 Hektor
624 Hektor and its moon Skamandrios
Discovery [1]
Discovered byA. Kopff
Discovery siteHeidelberg Obs.
Discovery date10 February 1907
Designations
(624) Hektor
Pronunciation/ˈhɛktər/[2]
Named after
Hector (Greek mythology)[3]
1907 XM; 1948 VD
Jupiter trojan [1][4] · Hektor [5]
Greeks Greeks[6]
AdjectivesHektorean or Hektorian
(both /hɛkˈtɔːriən/)[2]
Orbital characteristics [4]
Epoch 23 March 2018 (JD 2458200.5)
Uncertainty parameter 0
Observation arc111.28 yr (40,646 d)
Aphelion5.3824 AU
Perihelion5.1319 AU
5.2571 AU
Eccentricity0.0238
12.05 yr (4,403 d)
136.09°
0° 4m 54.48s / day
Inclination18.166°
342.79°
185.22°
Known satellites1
Jupiter MOID0.2752 AU
TJupiter2.8990
Physical characteristics
Dimensions403 km × 201 km (derived)[7]
370 km × 195 km × 195 km[8]
250±26 km[7]
(if bilobe: 256±12 km)[7]
225 km[4]
147±2 km[9]
227±15 km[10]
231±4 km[11]
Mass(7.9±1.4)×1018 kg[7]
(9.95±0.12)×1018 kg[10]
Mean density
1.0±0.3 g/cm3[7]
1.63±0.32 g/cm3[10]
2.43±0.35 g/cm3[12]
6.9205 hours (0.28835 d)[7]
0.025[4]
0.034±0.001[11]
0.107±0.011[9]
D (Tholen)[4]
13.79 to 15.26 [citation needed]
7.20[9] · 7.3[4] · 7.49[11]
0.078" to 0.048" [citation needed]

624 Hektor /ˈhɛktər/ is the largest Jupiter trojan and the namesake of the Hektor family, with a highly elongated shape equivalent in volume to a sphere of approximately 225 to 250 kilometers diameter. It was discovered on 10 February 1907, by astronomer August Kopff at Heidelberg Observatory in southwest Germany, and named after the Trojan prince Hector, from Greek mythology.[1][3] It has one small 12-kilometer sized satellite, Skamandrios, discovered in 2006.[7]

  1. ^ a b c Cite error: The named reference MPC-object was invoked but never defined (see the help page).
  2. ^ a b "Hector". Oxford English Dictionary (Online ed.). Oxford University Press. (Subscription or participating institution membership required.)
  3. ^ a b Cite error: The named reference springer was invoked but never defined (see the help page).
  4. ^ a b c d e f Cite error: The named reference jpldata was invoked but never defined (see the help page).
  5. ^ Cite error: The named reference Ferret was invoked but never defined (see the help page).
  6. ^ Cite error: The named reference MPC-Jupiter-Trojans was invoked but never defined (see the help page).
  7. ^ a b c d e f g Cite error: The named reference Marchis-2014 was invoked but never defined (see the help page).
  8. ^ Cite error: The named reference Storrs-1999 was invoked but never defined (see the help page).
  9. ^ a b c Cite error: The named reference Grav-2012 was invoked but never defined (see the help page).
  10. ^ a b c Cite error: The named reference Carry-2012 was invoked but never defined (see the help page).
  11. ^ a b c Cite error: The named reference AKARI was invoked but never defined (see the help page).
  12. ^ Cite error: The named reference Descamps-2015 was invoked but never defined (see the help page).