2678 Aavasaksa

Last updated

2678 Aavasaksa
Discovery  [1]
Discovered by Y. Väisälä
Discovery site Turku Obs.
Discovery date24 February 1938
Designations
(2678) Aavasaksa
Named after
 Aavasaksa
(hill in Finnish Lapland) [2]
1938 DF1 ·1952 KM
1955 DH ·1977 SX1
1979 FP2 ·A916 WA
main-belt  · Flora   [3]
Orbital characteristics   [1]
Epoch 4 September 2017 (JD 2458000.5)
Uncertainty parameter 0
Observation arc 79.20 yr (28,927 days)
Aphelion 2.4553 AU
Perihelion 2.0636 AU
2.2594 AU
Eccentricity 0.0867
3.40 yr (1,240 days)
204.08°
0° 17m 24.72s / day
Inclination 3.4446°
54.033°
45.844°
Physical characteristics
Dimensions8.19 km (calculated) [3]
8.371±0.096 km [4] [5]
24 h [6]
0.24 (assumed) [3]
0.276±0.037 [4] [5]
S   [3]
12.4 [4]  ·12.6 [1] [3]

    2678 Aavasaksa, provisional designation 1938 DF1, is a stony Flora asteroid from the inner regions of the asteroid belt, approximately 8 kilometers in diameter.

    Contents

    The asteroid was discovered on 24 February 1938, by Finnish astronomer Yrjö Väisälä at Turku Observatory in Southwest Finland. [7] It was named for the Aavasaksa hill in Finland. [2]

    Orbit and classification

    The S-type asteroid is a member of the Flora family, one of the largest groups of stony asteroids in the main-belt. It orbits the Sun in the inner main-belt at a distance of 2.1–2.5  AU once every 3 years and 5 months (1,240 days). Its orbit has an eccentricity of 0.09 and an inclination of 3° with respect to the ecliptic. [1]

    Aavasaksa was first identified as A916 WA at Bergedorf Observatory in 1916. Its observation arc begins at Mount Wilson Observatory in 1935, or 3 years prior to its official discovery observation at Turku. [7]

    Physical characteristics

    In January 2009, a provisional and fragmentary photometric lightcurve of Aavasaksa was obtained at the Via Capote Observatory in California. Lightcurve analysis gave it a longer than average rotation period of 24 hours with a brightness amplitude of 0.4 in magnitude ( U=1 ). [6]

    According to the survey carried out by the NEOWISE mission of NASA's space-based Wide-field Infrared Survey Explorer, Aavasaksa measures 8.4 kilometers in diameter and its surface has an albedo of 0.28, [4] while the Collaborative Asteroid Lightcurve Link assumes an albedo of 0.24, derived from 8 Flora, the Flora family's largest member and namesake, and calculates a diameter of 8.2 kilometers. [3]

    Naming

    This minor planet is named after Aavasaksa, a sharp-edged hill in Finnish Lapland, just south of the Arctic Circle. The hill is located in the Tornio River Valley, after which the minor planet 1471 Tornio is named, and is often considered the southernmost point in Finland, where the natural phenomenon of the midnight sun is visible each June. [2] The official naming citation was published by the Minor Planet Center on 26 May 1983 (M.P.C. 7947). [8]

    Related Research Articles

    <span class="mw-page-title-main">1500 Jyväskylä</span>

    1500 Jyväskylä, provisional designation 1938 UH, is a stony Florian asteroid from the inner regions of the asteroid belt, approximately 7 kilometers in diameter. It was discovered on 16 October 1938, by Finnish astronomer Yrjö Väisälä at the Turku Observatory in Southwest Finland. It was named for the Finnish town Jyväskylä.

    1763 Williams, provisional designation 1953 TN2, is a stony Florian asteroid from the inner regions of the asteroid belt, approximately 7 kilometers in diameter. It was discovered on 13 October 1953, by astronomers of the Indiana Asteroid Program at Goethe Link Observatory in Indiana, United States. The asteroid was named after Kenneth P. Williams, professor of mathematics at Indiana University.

    1047 Geisha, provisional designation 1924 TE, is a stony Florian asteroid from the inner regions of the asteroid belt, approximately 11 kilometers in diameter. It was discovered on 17 November 1924, by German astronomer Karl Reinmuth at the Heidelberg-Königstuhl State Observatory in southwest Germany. The asteroid was named after the British musical The Geisha.

    (9928) 1981 WE9, provisional designation 1981 WE9, is a stony Florian asteroid from the inner regions of the asteroid belt, approximately 3 kilometers in diameter. It was discovered on 16 November 1981, by astronomers at Perth Observatory in Bickley, Australia.

    3067 Akhmatova, provisional designation 1982 TE2, is a stony Flora asteroid from the inner regions of the asteroid belt, approximately 6 kilometers in diameter.

    6460 Bassano, provisional designation 1992 UK6, is a stony Flora asteroid from the inner regions of the asteroid belt, approximately 4.5 kilometers in diameter. The asteroid was discovered on 26 October 1992, by Italian amateur astronomers Ulisse Quadri and Luca Strabla at the Bassano Bresciano Observatory in northern Italy. It was named for the Italian village of Bassano Bresciano.

    1707 Chantal, provisional designation 1932 RL, is a stony background asteroid from the Florian region in the inner asteroid belt, approximately 7.5 kilometers in diameter. It was discovered on 8 September 1932, by astronomer Eugène Delporte at the Royal Observatory of Belgium in Uccle. The S-type asteroid has a rotation period of at least 10 hours. It was named for Chantal, the niece of Belgian astronomer Georges Roland.

    1991 Darwin, provisional designation 1967 JL, is a stony Florian asteroid from the inner regions of the asteroid belt, approximately 5 kilometers in diameter.

    1710 Gothard, provisional designation 1941 UF, is a stony asteroid from the inner regions of the asteroid belt, approximately 9 kilometers in diameter. It was discovered on 20 October 1941, by Hungarian astronomer György Kulin at the Konkoly Observatory in Budapest, Hungary. It was later named after Hungarian amateur astronomer Jenő Gothard.

    1479 Inkeri, provisional designation 1938 DE, is an asteroid from the central regions of the asteroid belt. It is an exceptionally slow rotator, suspected tumbler and measures approximately 19 kilometers in diameter. It was discovered on 16 February 1938, by Finnish astronomer Yrjö Väisälä at the Iso-Heikkilä Observatory in Turku, Finland. "Inkeri" is the name of two of the discoverer's younger relatives as well as the local name of the former Finnish province of Ingria.

    2028 Janequeo, provisional designation 1968 OB1, is a stony Florian asteroid from the inner regions of the asteroid belt, approximately 3 kilometers in diameter. It was discovered on July 18, 1968, by Chilean astronomers Carlos Torres and S. Cofre at the Cerro El Roble Station of Chile's National Astronomical Observatory. The asteroid named after the indigenous heroine Janequeo (Yanequén).

    2004 Lexell, provisional designation 1973 SV2, is a stony Florian asteroid from the inner regions of the asteroid belt, approximately 7.5 kilometers in diameter. The asteroid was discovered on 22 September 1973, by Soviet astronomer Nikolai Chernykh at the Crimean Astrophysical Observatory in Nauchnij, on the Crimean peninsula, and later named for Swedish-Russian astronomer and mathematician Anders Johan Lexell.

    1376 Michelle, provisional designation 1935 UH, is a stony Florian asteroid from the inner regions of the asteroid belt, approximately 8 kilometers in diameter. It was discovered on 29 October 1935, by French astronomer Guy Reiss at the North African Algiers Observatory in Algeria. It is named for the discoverer's daughter, Michelle Reiss.

    2648 Owa, provisional designation 1980 VJ, is a background asteroid from the Flora region of the inner asteroid belt, approximately 6 kilometers in diameter. It was discovered on 8 November 1980, by American astronomer Edward Bowell at the Anderson Mesa Station near Flagstaff, Arizona, in the United States. The presumably S-type asteroid has a rotation period of 3.56 hours. It was named for the word "rock" in the Native American Hopi language.

    <span class="mw-page-title-main">1518 Rovaniemi</span>

    1518 Rovaniemi, provisional designation 1938 UA, is a stony Florian asteroid from the inner regions of the asteroid belt, approximately 8 kilometers in diameter. Discovered by Yrjö Väisälä at the Turku Observatory in 1938, the asteroid was later named after the Finnish city of Rovaniemi.

    1405 Sibelius, provisional designation 1936 RE, is a stony Florian asteroid from the inner regions of the asteroid belt, approximately 8 kilometers in diameter. It was discovered on 12 September 1936, by Finnish astronomer Yrjö Väisälä at Turku Observatory in Southwest Finland. The asteroid was named after composer Jean Sibelius.

    1530 Rantaseppä, provisional designation 1938 SG, is a stony Florian asteroid from the inner regions of the asteroid belt, approximately 5 kilometers in diameter. Discovered by Yrjö Väisälä at Turku Observatory in 1938, it was later named after Finnish astronomer Hilkka Rantaseppä-Helenius.

    <span class="mw-page-title-main">1446 Sillanpää</span>

    1446 Sillanpää, provisional designation 1938 BA, is a stony Florian asteroid from the inner regions of the asteroid belt, approximately 8.2 kilometers in diameter. It was discovered on 26 January 1938, by Finnish astronomer Yrjö Väisälä at Turku Observatory in Southwest Finland. It was later named after writer Frans Eemil Sillanpää.

    1481 Tübingia, provisional designation 1938 DR, is a dark asteroid from the outer region of the asteroid belt, approximately 34 kilometers in diameter. It was discovered on 7 February 1938, by German astronomer Karl Reinmuth at Heidelberg Observatory in southern Germany, and named for the German city of Tübingen.

    23327 Luchernandez, provisional designation 2001 BE31, is a Florian asteroid from the inner regions of the asteroid belt, approximately 2 kilometers in diameter. It was discovered on 20 January 2001, by astronomers of the LINEAR program at the Lincoln Laboratory's Experimental Test Site near Socorro, New Mexico, United States. The asteroid was named for ISEF awardee Lucero Hernandez.

    References

    1. 1 2 3 4 "JPL Small-Body Database Browser: 2678 Aavasaksa (1938 DF1)" (2017-05-05 last obs.). Jet Propulsion Laboratory . Retrieved 14 June 2017.
    2. 1 2 3 Schmadel, Lutz D. (2007). "(2678) Aavasaksa". Dictionary of Minor Planet Names – (2678) Aavasaksa. Springer Berlin Heidelberg. p. 219. doi:10.1007/978-3-540-29925-7_2679. ISBN   978-3-540-00238-3.
    3. 1 2 3 4 5 6 "LCDB Data for (2678) Aavasaksa". Asteroid Lightcurve Database (LCDB). Retrieved 26 April 2016.
    4. 1 2 3 4 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 . Retrieved 14 January 2016.
    5. 1 2 Masiero, Joseph R.; Mainzer, A. K.; Grav, T.; Bauer, J. M.; Cutri, R. M.; Dailey, J.; et al. (November 2011). "Main Belt Asteroids with WISE/NEOWISE. I. Preliminary Albedos and Diameters". The Astrophysical Journal. 741 (2): 20. arXiv: 1109.4096 . Bibcode:2011ApJ...741...68M. doi:10.1088/0004-637X/741/2/68 . Retrieved 6 December 2016.
    6. 1 2 Brinsfield, James W. (July 2009). "Asteroid Lightcurve Analysis at the Via Capote Observatory: 2009 1st Quarter". The Minor Planet Bulletin. 36 (3): 127–128. Bibcode:2009MPBu...36..127B. ISSN   1052-8091 . Retrieved 14 January 2016.
    7. 1 2 "2678 Aavasaksa (1938 DF1)". Minor Planet Center. Retrieved 26 April 2016.
    8. ↑ "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 26 April 2016.
    This page is based on this Wikipedia article
    Text is available under the CC BY-SA 4.0 license; additional terms may apply.
    Images, videos and audio are available under their respective licenses.