2260 Neoptolemus

2260 Neoptolemus
Discovery [1]
Discovered byPurple Mountain Obs.
Discovery sitePurple Mountain Obs.
Discovery date26 November 1975
Designations
(2260) Neoptolemus
Pronunciation/niːɒpˈtɒlɪməs/[2]
Named after
Neoptolemus [1]
(Greek mythology)
1975 WM1 · 1951 XK
Jupiter trojan [1][3][4]
Greek [5][6] · background [6]
AdjectivesNeoptolemian
Orbital characteristics [3]
Epoch 23 March 2018 (JD 2458200.5)
Uncertainty parameter 0
Observation arc66.46 yr (24,276 d)
Aphelion5.4219 AU
Perihelion4.9699 AU
5.1959 AU
Eccentricity0.0435
11.84 yr (4,326 d)
242.76°
0° 4m 59.52s / day
Inclination17.779°
86.573°
320.49°
Jupiter MOID0.095 AU
TJupiter2.9030
Physical characteristics
71.65±3.4 km[7]
76.435±0.786 km[8]
81.28±3.75 km[9]
8.180±0.008 h[10]
8.180±0.022 h[10]
8.18±0.05 h[11][a]
8.199±0.005 h[12][a]
8.5 h (poor)[13]
12 h (poor)[14]
0.051±0.005[9]
0.057±0.008[8]
0.0650±0.007[7]
DTU: (Tholen)[3][4]
D (Pan-STARRS)[15]
D (SDSS-MOC)[16][17]
V–I = 0.950±0.024[4]
9.31[1][3][4][7][8][9]
9.32±0.25[15]

2260 Neoptolemus /niːɒpˈtɒlɪməs/ is a large Jupiter trojan from the Greek camp, approximately 76 kilometers (47 miles) in diameter. It was discovered on 26 November 1975, by astronomers at the Purple Mountain Observatory in Nanking, China.[1] The dark D-type asteroid is one of the 50 largest Jupiter trojans and has a rotation period of 8.18 hours.[4] It was named after Neoptolemus from Greek mythology.[1]

  1. ^ a b c d e f Cite error: The named reference MPC-object was invoked but never defined (see the help page).
  2. ^ Noah Webster (1884) A Practical Dictionary of the English Language
  3. ^ a b c d Cite error: The named reference jpldata was invoked but never defined (see the help page).
  4. ^ a b c d e Cite error: The named reference lcdb was invoked but never defined (see the help page).
  5. ^ Cite error: The named reference MPC-Jupiter-Trojans was invoked but never defined (see the help page).
  6. ^ a b Cite error: The named reference AstDys-object was invoked but never defined (see the help page).
  7. ^ a b c Cite error: The named reference SIMPS was invoked but never defined (see the help page).
  8. ^ a b c Cite error: The named reference Grav-2012 was invoked but never defined (see the help page).
  9. ^ a b c Cite error: The named reference AKARI was invoked but never defined (see the help page).
  10. ^ a b Cite error: The named reference Mottola-2011 was invoked but never defined (see the help page).
  11. ^ Cite error: The named reference Stephens-2016b was invoked but never defined (see the help page).
  12. ^ Cite error: The named reference Stephens-2016k was invoked but never defined (see the help page).
  13. ^ Cite error: The named reference Angeli-1999 was invoked but never defined (see the help page).
  14. ^ Cite error: The named reference Binzel-1992a was invoked but never defined (see the help page).
  15. ^ a b Cite error: The named reference Veres-2015 was invoked but never defined (see the help page).
  16. ^ Cite error: The named reference Ferret was invoked but never defined (see the help page).
  17. ^ Cite error: The named reference SDSS-Taxonomy was invoked but never defined (see the help page).


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