41 Daphne

Source: Wikipedia, the free encyclopedia.
Not to be confused with Daphnis (moon).

41 Daphne
Synodic rotation period
5.9 hr[1]
0.052 (calculated)[4] 0.083[1]
C [1]
7.12[1]

Daphne (

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

gravitational perturbations of the planets.[11]

In 1999, Daphne

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]

Satellite

Peneius
Daphne and Peneius as seen by the W.M. Keck II telescope in 2008
Designations
(41) Daphne I Peneius
Pronunciation/pɛˈniːəs/
S/2008 (41) 1
AdjectivesPeneian /pɛˈniːən/
Orbital characteristics
Inclination°

41 Daphne has at least one satellite, named Peneius (provisionally S/2008 (41) 1).[15][16] It was identified on March 28, 2008, and has a projected separation of 443 km, an orbital period of approximately 1.1 days,[6] and an estimated diameter of less than 2 km. If these preliminary observations hold up, this binary system has the most extreme size ratio known.[17] In Greek myth, Pēneios is the god of the river of that name, and father of Daphne.

References

  1. ^
    NASA Jet Propulsion Laboratory
    , retrieved 7 April 2013.
  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 "1999 European Asteroidal Occultation Results". euraster.net (a website for Asteroidal Occultation Observers in Europe). 9 February 2009. Retrieved 1 December 2008. (1999-Jul-02 Chords)
  6. ^
    Bibcode:2008DPS....40.2812C. Archived from the original
    (PDF) on 18 September 2009.
  7. doi:10.1016/j.icarus.2011.07.012
    .
  8. ^ Using the volume of an ellipsoid of 239x183x153km * a density of 1.95 g/cm³ yields a mass (m=d*v) of 6.8E+18 kg
  9. doi:10.1051/aas:1999161
    .
  10. ^ Appletons' annual cyclopaedia and register of important events of the year: 1862. New York: D. Appleton & Company. 1863. p. 173.
  11. Bibcode:1999esra.conf..297S
    .
  12. ^ Mike Nolan (18 January 2012). "Scheduled Arecibo Radar Asteroid Observations". Planetary Radar at Arecibo Observatory. Retrieved 23 January 2012.
  13. ^ "Radar-Detected Asteroids and Comets". NASA/JPL Asteroid Radar Research. Retrieved 23 January 2012.
  14. doi:10.1111/j.1945-5100.2001.tb01857.x
    .
  15. IAU Minor Planet Center
    . 6 March 2019. Retrieved 7 March 2019.
  16. ^ "IAUC 8930: COMET P/2006 B7 (ODAS); S/2008 (41) 1; 196P; STEREO SPACECRAFT". IAU Central Bureau for Astronomical Telegrams. 31 March 2008. Retrieved 31 March 2008.
  17. ^ "Discovery of an Extreme Mass-Ratio Satellite of (41) Daphne in a Close Orbit" (PDF). Lunar and Planetary Institute. 2008. Retrieved 13 October 2011.

External links

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