52 Europa

Source: Wikipedia, the free encyclopedia.
For the moon of Jupiter, see Europa (moon). For other uses, see Europa (disambiguation).

52 Europa
Synodic rotation period
5.63 h[2]
0.057±0.007 geometric (0.679±0.017 BV, 0.338±0.028 UB)[2]
Temperature~173 K
max: 258K (−15 °C)[6]
C/CF[2]
6.48[2]

Europa (

Europa, one of Zeus's conquests in Greek mythology, a name it shares with Jupiter's moon Europa
.

Physical characteristics

lightcurve
modeling

Europa is approximately the sixth largest asteroid by volume. Most likely it has a density of around 1.5 g/cm3, typical of C-type asteroids.[4] In 2007, James Baer and Steven R. Chesley estimated Europa to have a mass of (1.9±0.4)×1019 kg.[7] A more recent estimate by Baer suggests it has a mass of 3.27×1019 kg.[8]

Europa is a very dark carbonaceous C-type, and is the second largest of this group. Spectroscopic studies have found evidence of olivines and pyroxenes on the surface,[9] and there is some indication that there may be compositional differences between different regions[10] It orbits close to the Hygiea asteroid family, but is not a member.

prograde rotator, but the exact direction in which its pole points remains ambiguous. The most detailed analysis indicates that it points either towards about ecliptic coordinates (β, λ) = (70°, 55°) or (40°, 255°) with a 10° uncertainty.[12] This gives an axial tilt
of about 14° or 54°, respectively.

In 1988 a search for satellites or dust orbiting this asteroid was performed using the UH88 telescope at the Mauna Kea Observatories, but the effort came up empty.[13]

Observations

It has been found that the reputed

cataclysmic variable star CV Aquarii, discovered in 1934, was actually a misidentification of 52 Europa.[14]

Animation of 52 Europa's orbit 2000–2020
   Sun   Earth ·    Mars ·   Jupiter ·    52 Europa

Notes

  1. ^ (11.39 ± 0.79) × 10−12 M☉

References

  1. ^ Noah Webster (1884) A Practical Dictionary of the English Language
  2. ^ a b c d e JPL data Retrieved 2021-09-29
  3. ^ a b c d P. Vernazza et al. (2021) VLT/SPHERE imaging survey of the largest main-belt asteroids: Final results and synthesis. Astronomy & Astrophysics 54, A56
  4. ^
    S2CID 119286695
    .
  5. ^ James Baer, Steven Chesley & Robert Matson (2011) "Astrometric masses of 26 asteroids and observations on asteroid porosity." The Astronomical Journal, Volume 141, Number 5
  6. Bibcode:2000A&A...358.1133D
    . Retrieved 23 February 2024.
  7. doi:10.1007/s10569-007-9103-8
    .
  8. ^ Baer, James (2008). "Recent Asteroid Mass Determinations". Personal Website. Archived from the original on 2 July 2013. Retrieved 29 November 2008.
  9. Bibcode:2000A&A...358.1133D. Archived from the original
    (PDF) on 14 May 2005. Retrieved 29 April 2006.
  10. Bibcode:1991PhDT.......105S
    – via NASA ADS.
  11. doi:10.1016/0019-1035(83)90041-6
    .
  12. doi:10.1051/0004-6361:20031706
    .
  13. Bibcode:1988LPI....19..405G
    .
  14. ^ "CV Aquarii identified with (52) Europa" (PDF). Archived from the original (PDF) on 14 February 2006. Retrieved 29 April 2006.

Bibliography

External links

Retrieved from "https://en.wikipedia.org/w/index.php?title=52_Europa&oldid=1209744210"