3037 Alku

3037 Alku
Discovery [1]
Discovered by Y. Väisälä
Discovery site Turku Obs.
Discovery date 17 January 1944
Designations
MPC designation 3037 Alku
Named after
 Alku (a boat's name)[2]
1944 BA · 1979 BH
main-belt · (middle) [3]
Orbital characteristics [1]
Epoch 31 July 2016 (JD 2457600.5)
Uncertainty parameter 0
Observation arc 72.24 yr (26,385 days)    
Aphelion 3.1796 AU
Perihelion 2.1663 AU
2.6729 AU
Eccentricity 0.1895
4.37 yr (1,596 days)
238.8916°
0° 13m 31.8s / day
Inclination 19.0244°
107.8079°
330.3749°
Earth MOID 1.1976 AU (179.16 Gm)
Jupiter MOID 2.08871 AU (312.467 Gm)
Jupiter Tisserand parameter 3.277
Physical characteristics
Dimensions 18.91±0.8 km (IRAS:8)[4]
26.44±0.61 km[5]
29.289±0.302 km[6]
18.84 km (derived)[3]
11.844±0.002 h[7]
0.1131±0.011 (IRAS:8)[4]
0.061±0.003[5]
0.0343±0.0090[6]
0.0949 (derived)[3]
SMASS = C [1]
C [3]
11.8[1][3]
11.6[4][5][6]

    3037 Alku, provisional designation 1944 BA, is a carbonaceous asteroid from the middle region of the asteroid belt, approximately 20 kilometers in diameter. It was discovered on 17 January 1944, by Finnish astronomer Yrjö Väisälä at Turku Observatory in Southwest Finland.[8]

    The C-type asteroid orbits the Sun at a distance of 2.2–3.2 AU once every 4 years and 4 months (1,596 days). Its orbit has an eccentricity of 0.19 and an inclination of 19° with respect to the plane of the ecliptic.[1] No precoveries were taken before its discovery.[8]

    A rotational light-curve for this asteroid was obtained from photometric measurements taken by American astronomer Brian Warner at the Palmer Divide Observatory, Colorado, in January 2005. The light-curve gave a well-defined rotation period of 11.844±0.002 hours with a brightness variation of 0.95 in magnitude (U=3).[7]

    According to the space-based surveys carried out by the Infrared Astronomical Satellite (IRAS), the Japanese Akari satellite, and the NEOWISE mission of NASA's Wide-field Infrared Survey Explorer, the asteroid measures between 18.9 and 29.3 kilometers in diameter and it has an albedo in the range of 0.03 to 0.11.[4][5][6] The Collaborative Asteroid Lightcurve Link agrees with the results obtained by IRAS, and derives an albedo of 0.09 with a diameter of 18.8 kilometers, based on an absolute magnitude of 11.8.[3]

    The minor planet was named after the sailing boat Alku ("the beginning" in Finnish). Built by his father, the discoverer used to sail it in his childhood, and it became the origin of his enduring passion for sailing.[2] Naming citation was published on 27 June 1991 (M.P.C. 18450).[9]

    References

    1. 1 2 3 4 5 "JPL Small-Body Database Browser: 3037 Alku (1944 BA)" (2016-04-13 last obs.). Jet Propulsion Laboratory. Retrieved 13 May 2016.
    2. 1 2 Schmadel, Lutz D. (2007). Dictionary of Minor Planet Names – (3037) Alku. Springer Berlin Heidelberg. p. 250. ISBN 978-3-540-00238-3. Retrieved 13 May 2016.
    3. 1 2 3 4 5 6 "LCDB Data for (3037) Alku". Asteroid Lightcurve Database (LCDB). Retrieved 13 May 2016.
    4. 1 2 3 4 Tedesco, E. F.; Noah, P. V.; Noah, M.; Price, S. D. (October 2004). "IRAS Minor Planet Survey V6.0". NASA Planetary Data System. Bibcode:2004PDSS...12.....T. Retrieved 13 May 2016.
    5. 1 2 3 4 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 13 May 2016.
    6. 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:1109.6407Freely accessible. Bibcode:2011ApJ...741...90M. doi:10.1088/0004-637X/741/2/90. Retrieved 13 May 2016.
    7. 1 2 Warner, Brian D. (September 2005). "Asteroid lightcurve analysis at the Palmer Divide Observatory - winter 2004-2005". The Minor Planet Bulletin. 32 (3): 54–58. Bibcode:2005MPBu...32...54W. ISSN 1052-8091. Retrieved 20 December 2015.
    8. 1 2 "3037 Alku (1944 BA)". Minor Planet Center. Retrieved 13 May 2016.
    9. ↑ "MPC/MPO/MPS Archive". Minor Planet Center. Retrieved 13 May 2016.

    External links

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