astro.wikisort.org - Asteroid

8441 Lapponica, provisional designation 4008 T-3, is a background asteroid from the Florian region of the inner asteroid belt, approximately 4.5 kilometers (3 miles) in diameter. It was discovered on 16 October 1977, by Ingrid and Cornelis van Houten at Leiden, and Tom Gehrels at Palomar Observatory in California.[1] The L-type asteroid has a rotation period of 3.27 hours.[5] It was named for the Bar-tailed godwit, a shorebird also known by its Latin name Limosa lapponica.[2]

8441 Lapponica

orbit
Discovery [1]
Discovered by	C. J. van Houten I. van Houten-G. T. Gehrels
Discovery site	Palomar Obs.
Discovery date	16 October 1977
Designations
MPC designation	(8441) Lapponica
Pronunciation	/ləˈpɒnɪkə/
Named after	Bar-tailed godwit [2] (A shorebird)
Alternative designations	4008 T-3 · 1953 EC1 1989 LP
Minor planet category	main-belt [1][3] · (inner) background [4] · Flora [5]
Orbital characteristics [3]
Epoch 23 March 2018 (JD 2458200.5)
Uncertainty parameter 0
Observation arc	65.13 yr (23,788 d)
Aphelion	2.4945 AU
Perihelion	1.8857 AU
Semi-major axis	2.1901 AU
Eccentricity	0.1390
Orbital period (sidereal)	3.24 yr (1,184 d)
Mean anomaly	9.5854°
Mean motion	0° 18m 14.76s / day
Inclination	4.9910°
Longitude of ascending node	97.923°
Argument of perihelion	86.900°
Physical characteristics
Mean diameter	4.50 km (calculated)[5]
Synodic rotation period	3.27±0.01 h[6] 3.275±0.001 h[7]
Geometric albedo	0.24 (assumed)[5]
Spectral type	L (Pan-STARRS)[8] L (SDSS-MOC)[9] S (assumed)[5]
Absolute magnitude (H)	13.9[1][3][5] 13.99±0.23[8]

Orbit and classification

Lapponica is a non-family asteroid of the main belt's background population when applying the hierarchical clustering method to its proper orbital elements.[4] Based on osculating Keplerian orbital elements, the asteroid has also been classified as a member of the Flora family (402), a giant asteroid family and the largest family of stony asteroids in the main-belt.[5]

The asteroid orbits the Sun in the inner main-belt at a distance of 1.9–2.5 AU once every 3 years and 3 months (1,184 days; semi-major axis of 2.19 AU). Its orbit has an eccentricity of 0.14 and an inclination of 5° with respect to the ecliptic.[3] The body's observation arc begins with its first observation as 1953 EC₁ at Goethe Link Observatory in March 1953, more than 24 years prior to its official discovery observation.[1]

Palomar–Leiden Trojan survey

The survey designation "T-3" stands for the third Palomar–Leiden Trojan survey, named after the fruitful collaboration of the Palomar and Leiden Observatory in the 1960s and 1970s. Gehrels used Palomar's Samuel Oschin telescope (also known as the 48-inch Schmidt Telescope), and shipped the photographic plates to Ingrid and Cornelis van Houten at Leiden Observatory where astrometry was carried out. The trio are credited with the discovery of several thousand asteroid discoveries.[10]

Physical characteristics

Lapponica has been characterized as an L-type asteroid in the SDSS-based taxonomy and by Pan-STARRS' survey.[8][9] It is also an assumed S-type asteroid.[5]

Rotation period

In 2008, two rotational lightcurves of Lapponica were obtained from photometric observations by French amateur astronomer Pierre Antonini and by Maurice Clark at the Montgomery College Observatory in Maryland. Analysis of the best-rated lightcurve gave a rotation period of 3.27 hours with a consolidated brightness amplitude between 0.29 and 0.50 magnitude (U=3-/2+).[5][6][7]

Diameter and albedo

The Collaborative Asteroid Lightcurve Link assumes an albedo of 0.24 – derived from 8 Flora, the parent body of the Flora family – and calculates a diameter of 4.50 kilometers based on an absolute magnitude of 13.9.[5]

Naming

This minor planet was named for the bar-tailed godwit (Limosa lapponica) a migratory bird of the family Scolopacidae.[2] The official naming citation was published by the Minor Planet Center on 2 February 1999 (M.P.C. 33791) and revised on 2 April 1999 (M.P.C. 34089).[11]

References

External links

• Asteroid Lightcurve Database (LCDB), query form (info Archived 16 December 2017 at the Wayback Machine)
• Dictionary of Minor Planet Names, Google books
• Asteroids and comets rotation curves, CdR – Observatoire de Genève, Raoul Behrend
• Discovery Circumstances: Numbered Minor Planets (5001)-(10000) – Minor Planet Center
• 8441 Lapponica at AstDyS-2, Asteroids—Dynamic Site
  • Ephemeris · Observation prediction · Orbital info · Proper elements · Observational info
• 8441 Lapponica at the JPL Small-Body Database
  • Close approach · Discovery · Ephemeris · Orbit diagram · Orbital elements · Physical parameters

На других языках

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[de] (8441) Lapponica

(8441) Lapponica ist ein Asteroid des inneren Hauptgürtels, der am 16. Oktober 1977 von dem niederländischen Astronomenehepaar Cornelis Johannes van Houten und Ingrid van Houten-Groeneveld entdeckt wurde. Die Entdeckung geschah im Rahmen der 3. Trojaner-Durchmusterung, bei der von Tom Gehrels mit dem 120-cm-Oschin-Schmidt-Teleskop des Palomar-Observatoriums aufgenommene Feldplatten an der Universität Leiden durchmustert wurden, 17 Jahre nach Beginn des Palomar-Leiden-Surveys. Unbestätigte Sichtungen des Asteroiden hatte es schon am 10. März 1953 am Goethe-Link-Observatorium in Indiana gegeben.[1]

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- [en] 8441 Lapponica

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[ru] (8441) Лаппоника

(8441) Лаппоника (4008 T-3) — астероид из группы главного пояса[2], открытый Корнелисом Йоханнесом ван Хаутеном, Ингрид ван Хаутен-Груневельд и Томом Герельсом в Паломарской обсерватории в Калифорнии 16 октября 1877 года[1]. Астероид назван в честь малого веретенника (лат. Limosa lapponica), вида птиц из семейства бекасовых[4].

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