Harman Patil (Editor)

702 Alauda

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Discovered by  Joseph Helffrich
Pronunciation  /əˈlɔːdə/ ə-LAW-də
Minor planet category  Main belt
Discovered  16 July 1910
Discoverer  Joseph Helffrich
Moon  S/2007 (702) 1
Discovery date  26 July 2007
Alternative names  1910 KQ
Observation arc  105.76 yr (38628 d)
Orbits  Sun
Asteroid group  Asteroid belt
702 Alauda httpsuploadwikimediaorgwikipediacommonsthu
Discovery site  Heidelberg-Königstuhl State Observatory
Similar  423 Diotima, 107 Camilla, 121 Hermione, 375 Ursula, Asteroid belt

702 Alauda is a large asteroid 7005195000000000000♠195±3 km in diameter. It was discovered in 1910 by Joseph Helffrich from the observatory at Heidelberg University. It is named after the lark (alauda). In 2007, a small moon, named Pichi üñëm, was discovered.

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Satellite

Alauda's satellite Pichi üñëm (provisionally known as S/2007 (702) 1) was discovered from observations using adaptive-optics imaging with the European Southern Observatory (ESO) 8-m Very Large Telescope (VLT) on Cerro Paranal, Chile. It is 5.5 km in diameter and has a projected separation from Alauda of 900 km. It was named Pichi üñëm, meaning "little bird" in the Mapuche language of Chile, the country from which the moon was discovered.

Orbital characteristics

Alauda has been identified as the largest member of a dynamical family. Other members of this family include: 581 Tauntonia, 1101 Clematis, 1838 Ursa, 3139 Shantou, 3325 TARDIS, 4368 Pillmore, 5360 Rozhdestvenskij, 5815 Shinsengumi, and many others. Alauda's moon may be a result of the collision that created the asteroid family.

Physical characteristics

The discovery of Alauda's moon enabled Alauda's mass to be determined. Rojo and Margot (2010) have estimated its mass to be 6.06×1018 kg with a density of 1.57 g/cm³.

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. It may have occulted an apparent magnitude 9.5 star in the constellation of Gemini on 2009-10-17 at 08:18 UT. This event should have been visible from Uruguay, Argentina, and Chile.

References

702 Alauda Wikipedia


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