41 Daphne

Not to be confused with Daphnis (moon).

41 Daphne
Discovery[1]
Discovered byH. Goldschmidt
Discovery dateMay 22, 1856
Designations
(41) Daphne
Pronunciation/ˈdæfni/[2]
Named after
Daphnē
1949 TG
Main belt
AdjectivesDaphnean /ˈdæfniən/[3]
Orbital characteristics[1]
Epoch 31 December 2006 (JD 2454100.5)
Aphelion3.517 AU (526.144 Gm)
Perihelion2.014 AU (301.220 Gm)
2.765 AU (413.682 Gm)
Eccentricity0.272
4.60 a (1,679.618 d)
247.500°
Inclination15.765°
178.159°
46.239°
Known satellitesPeneius /pɛˈniːəs/
(S/2008 (41) 1)
Physical characteristics
Dimensionsc/a = 0.65±0.08[4]
213×160 km[5]
239x183x153 km[6]
187±13 km[4]
205.5±1.9[1]
189 km[7]
Mass(6.1±0.9)×1018 kg[4]
≈ 6.8×1018 kg[8]
Mean density
1.78±0.45 g/cm3[4]
≈ 1.95 g/cm³[6]
5.9 hr[1]
0.052 (calculated)[4] 0.083[1]
C [1]
7.12[1]

41 Daphne is a large asteroid from the asteroid belt.[1] It is a dark-surfaced body 174 km in diameter is probably composed of primitive carbonaceous chondrites. The spectra of the asteroid displays evidence of aqueous alteration.[9] It was discovered by H. Goldschmidt on May 22, 1856, and named after Daphne, the nymph in Greek mythology who was turned into a laurel tree. Incorrect orbital calculations initially resulted in 56 Melete being mistaken for a second sighting of Daphne. Daphne was not sighted again until August 31, 1862.[10]

The orbit of 41 Daphne places it in a 9:22 mean motion resonance with the planet Mars. The computed Lyapunov time for this asteroid is 14,000 years, indicating that it occupies a chaotic orbit that will change randomly over time because of gravitational perturbations of the planets.[11]

In 1999, Daphne occulted three stars, and on July 2, 1999, produced eleven chords indicating an ellipsoid of 213×160 km.[5] Daphnean lightcurves also suggest that the asteroid is irregular in shape. Daphne was observed by Arecibo radar in April 2008.[12][13] Based upon radar data, the near surface solid density of the asteroid is 2.4+0.7
−0.5 g cm−3.[14]

  1. ^ a b c d e f g h Cite error: The named reference jpldata was invoked but never defined (see the help page).
  2. ^ "Daphne". Lexico UK English Dictionary. Oxford University Press. Archived from the original on 31 October 2020.
  3. ^ "Daphne". Oxford English Dictionary (Online ed.). Oxford University Press. (Subscription or participating institution membership required.)
  4. ^ a b c d e P. Vernazza et al. (2021) VLT/SPHERE imaging survey of the largest main-belt asteroids: Final results and synthesis. Astronomy & Astrophysics 54, A56
  5. ^ a b Cite error: The named reference euraster was invoked but never defined (see the help page).
  6. ^ a b Cite error: The named reference Conrad2008 was invoked but never defined (see the help page).
  7. ^ Cite error: The named reference Matter2011 was invoked but never defined (see the help page).
  8. ^ Cite error: The named reference mass was invoked but never defined (see the help page).
  9. ^ Cite error: The named reference Fornasier1999 was invoked but never defined (see the help page).
  10. ^ Appletons' annual cyclopaedia and register of important events of the year: 1862. New York: D. Appleton & Company. 1863. p. 173.
  11. ^ Cite error: The named reference Sidlichovsky was invoked but never defined (see the help page).
  12. ^ Cite error: The named reference Arecibo was invoked but never defined (see the help page).
  13. ^ Cite error: The named reference detected was invoked but never defined (see the help page).
  14. ^ Cite error: The named reference Magri2001 was invoked but never defined (see the help page).