969 Leocadia

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969 Leocadia
Discovery 
Perihelion
1.9537 AU
2.4615 AU
Eccentricity0.2063
3.86 yr (1,411 d)
199.53°
0° 15m 18.72s / day
Inclination2.2928°
287.76°
91.332°
Physical characteristics
Mean diameter
  • 17.321±0.218 km[7]
  • 19.37±0.22 km[8]
  • 19.51±0.7 km[9]
Synodic rotation period
6.87±0.01 h[10][11]
  • 0.019±0.005[7]
  • 0.0435±0.003[9]
  • 0.045±0.001[8]
12.8[1][4]

969 Leocadia (

rotation period of 6.9 hours and is likely regular in shape.[10] Any reference of the asteroid's name to a person is unknown.[3]

Orbit and classification

Leocadia is a non-

Uccle Observatory in February 1933, more than a decade after its official discovery observation Simeiz Observatory on 5 November 1921.[1]

Naming

This minor planet is named after a Feminine Russian first name. Any reference of this name to a person or occurrence is unknown.[3]

Unknown meaning

Among the many thousands of

Karl Reinmuth.[12]

Physical characteristics

In the

Tholen classification (FXU:), Leocadia is an uncommon and dark F-type asteroid, somewhat similar to that of an X-type, though with an unusual (U) and noisy (:) spectra.[4]

Rotation period

In December 2006, a rotational

U=2), which is indicative of a rather spherical, non-irregular shape.[10][11]

Diameter and albedo

According to the surveys carried out by the

mean diameter as low as 13.58±3.09 km.[11] The Collaborative Asteroid Lightcurve Link adopts the result from IRAS, that is, an albedo of 0.0435 and a diameter of 19.51 kilometers based on an absolute magnitude of 9.22.[11]

An

asteroid occultation on 19 August 2013, gave a best-fit ellipse dimension of 19.0 × 19.0 kilometers.[6] These timed observations are taken when the asteroid passes in front of a distant star. However the measurements for Leocadia were of poor quality.[6]

References

  1. ^ a b c d e "969 Leocadia (A921 VC)". Minor Planet Center. Retrieved 11 February 2020.
  2. ^ Noah Webster (1884) A Practical Dictionary of the English Language
  3. ^
    ISBN 978-3-540-00238-3
    .
  4. ^ a b c d e f g h "JPL Small-Body Database Browser: 969 Leocadia (A921 VC)" (2020-01-07 last obs.). Jet Propulsion Laboratory. Retrieved 11 February 2020.
  5. ^ a b "Asteroid 969 Leocadia – Proper Elements". AstDyS-2, Asteroids – Dynamic Site. Retrieved 11 February 2020.
  6. ^ a b c d "Asteroid 969 Leocadia". Small Bodies Data Ferret. Retrieved 11 February 2020.
  7. ^
    doi:10.1088/2041-8205/759/1/L8
    .
  8. ^
    doi:10.1093/pasj/63.5.1117. (online, AcuA catalog p. 153
    )
  9. ^
    Bibcode:2004PDSS...12.....T
    . Retrieved 11 February 2020.
  10. ^ a b c Behrend, Raoul. "Asteroids and comets rotation curves – (969) Leocadia". Geneva Observatory. Retrieved 11 February 2020.
  11. ^ a b c d "LCDB Data for (969) Leocadia". Asteroid Lightcurve Database (LCDB). Retrieved 11 February 2020.
  12. ISBN 978-3-540-00238-3
    .

External links
Retrieved from "https://en.wikipedia.org/w/index.php?title=969_Leocadia&oldid=1229660109"