54 Alexandra

54 Alexandra
A three-dimensional model of 54 Alexandra based on its light curve
Discovery[1]
Discovered byH. Goldschmidt
Discovery date10 September 1858
Designations
(54) Alexandra
Pronunciation/ˌælɪɡˈzændrə, -ˈzɑːn-/ AL-ig-ZA(H)N-drə[2]
Named after
Alexander von Humboldt
(German explorer)
Main belt
AdjectivesAlexandrian
Orbital characteristics
Epoch December 31, 2006 (JD 2454100.5)
Aphelion485.483 Gm (3.245 AU)
Perihelion326.043 Gm (2.179 AU)
405.763 Gm (2.712 AU)
Eccentricity0.196
1,631.620 d (4.47 a)
103.809°
Inclination11.804°
313.446°
345.594°
Physical characteristics
Dimensions160 × 135 km (± 1 km)
154.137 km[1]
Mass(6.16±3.50)×1018 kg[3]
Mean density
3.50±2.11 g/cm3[3]
18.14 h[4]
155°±4°[5]
17°±3°[5]
0.056[1][6]
Tholen = C [1]
SMASS = C [1]
7.66[1]

54 Alexandra is a carbonaceous asteroid from the intermediate asteroid belt, approximately 155 kilometers in diameter. It was discovered by German-French astronomer Hermann Goldschmidt on 10 September 1858, and named after the German explorer Alexander von Humboldt; it was the first asteroid to be named after a male.[7]

  1. ^ a b c d e f Cite error: The named reference jpldata was invoked but never defined (see the help page).
  2. ^ "Alexandra". Lexico UK English Dictionary. Oxford University Press. Archived from the original on 22 March 2020.
    "Alexandra". Dictionary.com Unabridged (Online). n.d.
  3. ^ a b Cite error: The named reference Carry2012 was invoked but never defined (see the help page).
  4. ^ Cite error: The named reference Belskaya1993 was invoked but never defined (see the help page).
  5. ^ a b Cite error: The named reference Hanus2017 was invoked but never defined (see the help page).
  6. ^ "Asteroid Data Sets". Archived from the original on 17 December 2009. Retrieved 12 January 2007.
  7. ^ Cite error: The named reference Schmadel2003 was invoked but never defined (see the help page).