702 Alauda

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702 Alauda
SMASSII)[2]
11.42 to 13.57[20]
7.25[2]

702 Alauda

Heidelberg Observatory, it was named after the lark (alauda).[3][6] Its small moon, named Pichi üñëm, was discovered in 2007.[10][21]

Satellite

Alauda's satellite Pichi üñëm provisionally known as S/2007 (702) 1, was discovered on 26 July 2007 from observations using adaptive-optics imaging with the European Southern Observatory (ESO) 8-m Very Large Telescope (VLT) on Cerro Paranal, Chile.[10] It is about 3.5 km in diameter (assuming it has the same albedo as the primary) and orbits Alauda in a nearly circular orbit at a distance of 1226.5±24 km. Pichi üñëm takes 4.91 days to complete one orbit.[19][21][22] It was named Pichi üñëm (Mapuche pronunciation: [ˈpɪtʃi ɨˈɲɘm], approximately /ˈpɪtʃi ɪˈnjʌm/), meaning "little bird" in the Mapuche language of Chile, the country from which the moon was discovered.[23]

Orbital characteristics

Alauda has been identified as the largest member of the

5815 Shinsengumi, and many others.[25] Alauda's moon may be a result of the collision that created the asteroid family.[10]

Physical characteristics

The discovery and tracking of Alauda's moon enabled Alauda's mass to be determined. The discoverers of the moon, Patricio Rojo and Jean-Luc Margot, estimated Alauda's mass to be (6.057±0.36)×1018 kg and its density to be 1.57±0.5 g/cm3.[19]

Occultations

Alauda has been observed to

occult stars on several occasions, providing important information on its size and shape. It produced occultations on 2001-07-12 and 2004-04-21.[26] It may have occulted an apparent magnitude 9.5 star in the constellation of Gemini on 2009-10-17 at 08:18 UT.[1] This event should have been visible from Uruguay, Argentina, and Chile.[1]

References

  1. ^ a b c Steve Preston. "(702) Alauda / TYC 1920-00620-1 event on 2009 Oct 17, 08:18 UT". Asteroid Occultation Updates. Retrieved 5 October 2009.[permanent dead link]
  2. ^ a b c d e f g "JPL Small-Body Database Browser: 702 Alauda (1910 KQ)" (2017-06-05 last obs.). Jet Propulsion Laboratory. Retrieved 6 November 2017.
  3. ^ a b "702 Alauda (1910 KQ)". Minor Planet Center. Retrieved 6 November 2017.
  4. ^ "Alauda". Merriam-Webster.com Dictionary.
  5. ^ 'Alaude' in Noah Webster (1884) A Practical Dictionary of the English Language
  6. ^
    ISBN 978-3-540-00238-3
    .
  7. ^ a b "LCDB Data for (702) Alauda". Asteroid Lightcurve Database (LCDB). Retrieved 6 November 2017.
  8. ^ "Asteroid 702 Alauda – Nesvorny HCM Asteroid Families V3.0". Small Bodies Data Ferret. Retrieved 24 October 2019.
  9. ^ Johnston, Robert (21 September 2014). "(702) Alauda". johnstonsarchive.net. Retrieved 6 November 2017.
  10. ^
    Bibcode:2007DPS....39.1608M
    . Retrieved 27 February 2018.
  11. S2CID 9341381
    . Retrieved 6 November 2017.
  12. S2CID 119289027
    .
  13. PMID 19081813
    .
  14. doi:10.1093/pasj/63.5.1117. Retrieved 17 October 2019. (online, AcuA catalog p. 153
    )
  15. S2CID 46350317
    . Retrieved 6 November 2017.
  16. Bibcode:2004PDSS...12.....T
    . Retrieved 22 October 2019.
  17. S2CID 118700974
    .
  18. S2CID 119214002
    . Retrieved 6 November 2017.
  19. ^
    S2CID 59449907
    .
  20. ^ Magnitudes generated with JPL Horizons for the year 1950 through 2100
  21. ^ a b P. Rojo and J.L. Margot (2 August 2007). "Electronic Telegram No. 1016: S/2007 (702) 1". IAU Central Bureau for Astronomical Telegrams. Retrieved 5 July 2011.
  22. ^ "Asteroid and Dwarf Planet News". Retrieved 6 October 2009.
  23. ^ "New Names of Minor Planets" (PDF). (2.19 MB)
  24. S2CID 119280014
    .
  25. ^ "Opposition dates and magnitudes for 702 family members (2004–2008)". Italian organization of minor planet observers. Archived from the original on 7 February 2012. Retrieved 5 October 2009.
  26. ^ David Dunham. "Observed asteroidal occultation list". Retrieved 27 January 2011.

External links

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