803 Picka

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803 Picka
Friedrich Pick
(Czech physician)[2]
A915 FL · 1952 YH
1984 EC2 · A899 NE
A915 FD · 1915 WS
Perihelion
2.9929 AU
3.2031 AU
Eccentricity0.0656
5.73 yr (2,094 d)
338.93°
0° 10m 18.84s / day
Inclination8.6665°
250.95°
58.556°
Physical characteristics
Mean diameter
  • 46.50±2.2 km[7]
  • 57.41±0.95 km[8]
  • 69.165±8.353 km[9]
Synodic rotation period
5.0742±0.0006 h[10]
  • (218.0°, 34.0°) (λ1/β1)[5]
  • (53.0°, 41.0°) (λ2/β2)[5]
  • 0.035±0.102[9]
  • 0.079±0.003[8]
  • 0.1181±0.012[7]

803 Picka (

Friedrich Pick (1867–1921).[2]

Orbit and classification

Picka is a non-

Boyden Station (800) of the Harvard Observatory in Arequipa, Peru. The body's observation arc begins with its official discovery observation by Johann Palisa at Vienna Observatory on 21 March 1915.[1]

Naming

This

H 80).[2]

Physical characteristics

In the SDSS-based taxonomy, Picka is a dark D-type asteroid.[11] In the 1995 SMASS-I survey by Xu, it is classified as an uncommon T-type with some similarities to a D-type (TD).[5] The D-types asteroids are common in the outer main-belt and are very abundant among the Jupiter trojan population.

Rotation period

Lightcurve
based 3D-model of Picka

In April 2007, a rotational

U=2/3–).[10]

Lightcurve inversion also modeled the body's shape and

US Naval Observatory, the Uppsala Asteroid Photometric Catalogue, the Palomar Transient Factory and the Catalina Sky Survey gave a concurring sidereal period of 5.07478±0.00002 hours and two spin axes at (218.0°, 34.0°) and (53.0°, 41.0°) in ecliptic coordinates (λ, β). The body's very elongated shape had already been indicated by the relatively high brightness variation measured during the direct photometric observations.[5][14]

Diameter and albedo

According to the surveys carried out by the Infrared Astronomical Satellite

asteroid occultation of Picka gave a best-fit ellipse dimension of (57.0 km × 57.0 km), which is similar to that obtained by the Japanese Akari satellite. These timed observations are taken when the asteroid passes in front of a distant star. This observation still has received a low quality rating.[5]

References

  1. ^ a b c d e "803 Picka (A915 FL)". Minor Planet Center. Retrieved 26 March 2020.
  2. ^
    ISBN 978-3-540-00238-3
    .
  3. ^ a b c d "JPL Small-Body Database Browser: 803 Picka (A915 FL)" (2019-09-20 last obs.). Jet Propulsion Laboratory. Retrieved 26 March 2020.
  4. ^ a b "Asteroid 803 Picka – Proper Elements". AstDyS-2, Asteroids – Dynamic Site. Retrieved 26 March 2020.
  5. ^ a b c d e f g h "Asteroid 803 Picka". Small Bodies Data Ferret. Retrieved 26 March 2020.
  6. ^ a b Zappalà, V.; Bendjoya, Ph.; Cellino, A.; Farinella, P.; Froeschle, C. (1997). "Asteroid Dynamical Families". NASA Planetary Data System: EAR-A-5-DDR-FAMILY-V4.1. Retrieved 26 March 2020.} (PDS main page)
  7. ^
    Bibcode:2004PDSS...12.....T
    . Retrieved 26 March 2020.
  8. ^
    doi:10.1093/pasj/63.5.1117. (online, AcuA catalog p. 153
    )
  9. ^
    Bibcode:2016PDSS..247.....M
    . Retrieved 26 March 2020.
  10. ^ a b c Behrend, Raoul. "Asteroids and comets rotation curves – (803) Picka". Geneva Observatory. Retrieved 26 March 2020.
  11. ^
    doi:10.1051/0004-6361/200913322. Retrieved 26 March 2020. (PDS data set)
  12. ISSN 1052-8091. Archived from the original
    (PDF) on 20 February 2020. Retrieved 26 March 2020.
  13. ^ a b "LCDB Data for (803) Picka". Asteroid Lightcurve Database (LCDB). Retrieved 26 March 2020.
  14. ISSN 0004-6361
    .

External links
Retrieved from "https://en.wikipedia.org/w/index.php?title=803_Picka&oldid=1195667950"