From Wikipedia, the free encyclopedia
702 Alauda , provisional designation 1910 KQ , is a carbonaceous
asteroid and
binary system from the outer
asteroid belt , approximately 190 kilometers in diameter.
[2] It is the
parent body of the
Alauda family . Discovered in 1910 by German astronomer
Joseph Helffrich at
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 ), 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
Alauda family , a
dynamical family of bright carbonaceous asteroids with more than a thousand known members.
[24] : 23 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.
[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
^
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 ]
^
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 .
^
a
b
"702 Alauda (1910 KQ)" . Minor Planet Center . Retrieved 6 November 2017 .
^
"Alauda" .
Merriam-Webster.com Dictionary .
^ 'Alaude' in Noah Webster (1884) A Practical Dictionary of the English Language
^
a
b Schmadel, Lutz D. (2007). "(702) Alauda". Dictionary of Minor Planet Names . Springer Berlin Heidelberg. p. 68.
doi :
10.1007/978-3-540-29925-7_703 .
ISBN
978-3-540-00238-3 .
^
a
b
"LCDB Data for (702) Alauda" . Asteroid Lightcurve Database (LCDB). Retrieved 6 November 2017 .
^
"Asteroid 702 Alauda – Nesvorny HCM Asteroid Families V3.0" . Small Bodies Data Ferret . Retrieved 24 October 2019 .
^ Johnston, Robert (21 September 2014).
"(702) Alauda" . johnstonsarchive.net. Retrieved 6 November 2017 .
^
a
b
c
d Margot, Jean-Luc; Rojo, P. (October 2007).
"Discovery of a Satellite to Asteroid Family Member (702) Alauda" . American Astronomical Society . 39 : 440.
Bibcode :
2007DPS....39.1608M . Retrieved 27 February 2018 .
^ Nugent, C. R.; Mainzer, A.; Masiero, J.; Bauer, J.; Cutri, R. M.; Grav, T.; et al. (December 2015).
"NEOWISE Reactivation Mission Year One: Preliminary Asteroid Diameters and Albedos" . The Astrophysical Journal . 814 (2): 13.
arXiv :
1509.02522 .
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2015ApJ...814..117N .
doi :
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S2CID
9341381 . Retrieved 6 November 2017 .
^ Nugent, C. R.; Mainzer, A.; Bauer, J.; Cutri, R. M.; Kramer, E. A.; Grav, T.; et al. (September 2016).
"NEOWISE Reactivation Mission Year Two: Asteroid Diameters and Albedos" . The Astronomical Journal . 152 (3): 12.
arXiv :
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Bibcode :
2016AJ....152...63N .
doi :
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S2CID
119289027 .
^ Marchis, F.; Kaasalainen, M.; Hom, E. F. Y.; Berthier, J.; Enriquez, J.; Hestroffer, D.; et al. (November 2006).
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Bibcode :
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doi :
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PMC
2600456 .
PMID
19081813 .
^ Usui, Fumihiko; Kuroda, Daisuke; Müller, Thomas G.; Hasegawa, Sunao; Ishiguro, Masateru; Ootsubo, Takafumi; et al. (October 2011).
"Asteroid Catalog Using Akari: AKARI/IRC Mid-Infrared Asteroid Survey" . Publications of the Astronomical Society of Japan . 63 (5): 1117–1138.
Bibcode :
2011PASJ...63.1117U .
doi :
10.1093/pasj/63.5.1117 . Retrieved 17 October 2019 . (
online ,
AcuA catalog p. 153 )
^ Masiero, Joseph R.; Mainzer, A. K.; Grav, T.; Bauer, J. M.; Cutri, R. M.; Nugent, C.; et al. (November 2012).
"Preliminary Analysis of WISE/NEOWISE 3-Band Cryogenic and Post-cryogenic Observations of Main Belt Asteroids" . The Astrophysical Journal Letters . 759 (1): 5.
arXiv :
1209.5794 .
Bibcode :
2012ApJ...759L...8M .
doi :
10.1088/2041-8205/759/1/L8 .
S2CID
46350317 . Retrieved 6 November 2017 .
^ Tedesco, E. F.; Noah, P. V.; Noah, M.; Price, S. D. (October 2004).
"IRAS Minor Planet Survey V6.0" . NASA Planetary Data System . 12 : IRAS-A-FPA-3-RDR-IMPS-V6.0.
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2004PDSS...12.....T . Retrieved 22 October 2019 .
^ Mainzer, A.; Grav, T.; Masiero, J.; Hand, E.; Bauer, J.; Tholen, D.; et al. (November 2011). "NEOWISE Studies of Spectrophotometrically Classified Asteroids: Preliminary Results". The Astrophysical Journal . 741 (2): 25.
arXiv :
1109.6407 .
Bibcode :
2011ApJ...741...90M .
doi :
10.1088/0004-637X/741/2/90 .
S2CID
118700974 .
^ Alí-Lagoa, V.; de León, J.; Licandro, J.; Delbó, M.; Campins, H.; Pinilla-Alonso, N.; et al. (June 2013).
"Physical properties of B-type asteroids from WISE data" . Astronomy and Astrophysics . 554 : 16.
arXiv :
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S2CID
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^
a
b
c
d Rojo, P.; Margot, J. L. (February 2011). "Mass and Density of the B-type Asteroid (702) Alauda". The Astrophysical Journal . 727 (2): 5.
arXiv :
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S2CID
59449907 .
^ Magnitudes generated with JPL Horizons for the year 1950 through 2100
^
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 .
^
"Asteroid and Dwarf Planet News" . Retrieved 6 October 2009 .
^
"New Names of Minor Planets" (PDF) . (2.19 MB)
^ Nesvorný, D.; Broz, M.; Carruba, V. (December 2014). "Identification and Dynamical Properties of Asteroid Families". Asteroids IV . pp. 297–321.
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1502.01628 .
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2015aste.book..297N .
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ISBN
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S2CID
119280014 .
^
"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 .
^ David Dunham.
"Observed asteroidal occultation list" . Retrieved 27 January 2011 .
External links