1695 Walbeck

1695 Walbeck
Discovery [1]
Discovered by L. Oterma
Discovery site Turku Observatory
Discovery date 15 October 1941
Designations
MPC designation 1695 Walbeck
Named after
 Henrik Walbeck
(geodesist)[2]
1941 UO · 1964 QA
1964 RE
main-belt · (outer) [3]
Orbital characteristics [1]
Epoch 27 June 2015 (JD 2457200.5)
Uncertainty parameter 0
Observation arc 74.01 yr (27,033 days)
Aphelion 3.5940 AU
Perihelion 1.9697 AU
2.7819 AU
Eccentricity 0.2919
4.64 yr (1,695 days)
331.59°
Inclination 16.703°
218.46°
139.46°
Physical characteristics
Dimensions 19.62 km[4]
19.84±0.29 km[5]
18.953±0.258 km[6]
17.88±0.27 km[7]
5.1607 h[8]
5.3 h[9]
0.0504[4]
0.051±0.002[5]
0.0425±0.0058[6]
0.037±0.007[7]
0.0503 (derived)[3]
SMASS = Cg
C [3]
12.5

    1695 Walbeck, provisional designation 1941 UO, is an eccentric, carbonaceous asteroid from the outer region of the asteroid belt, about 19 kilometers in diameter. It was discovered by Finnish female astronomer Liisi Oterma at Turku Observatory on 15 October 1941.[10]

    The Cg-type asteroid orbits the Sun at a distance of 2.0–3.6 AU once every 4 years and 8 months (1,695 days). Its orbit shows a relatively high eccentricity of 0.29 and is significantly tilted by 17 degrees towards the plane of the ecliptic. It has a rotation period of 5.2 hours[8][9] and an albedo in the range of 0.03–0.06, according to the surveys carried out by IRAS, Akari, WISE and NEOWISE.[4][5][6][7]

    The minor planet was named in memory of Finnish scientist Henrik Johan Walbeck (1793–1822), astronomer and geodesist at the old Academia Aboensis who used the method of least squares to derive a good value for the Earth's flattening.[2]

    References

    1. 1 2 "JPL Small-Body Database Browser: 1695 Walbeck (1941 UO)" (2015-10-20 last obs.). Jet Propulsion Laboratory. Retrieved November 2015.
    2. 1 2 Schmadel, Lutz D. (2003). Dictionary of Minor Planet Names – (1695) Walbeck. Springer Berlin Heidelberg. p. 135. ISBN 978-3-540-29925-7. Retrieved November 2015.
    3. 1 2 3 "LCDB Data for (1695) Walbeck". Asteroid Lightcurve Database (LCDB). Retrieved November 2015.
    4. 1 2 3 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 November 2015.
    5. 1 2 3 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 November 2015.
    6. 1 2 3 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 November 2015.
    7. 1 2 3 Masiero, Joseph R.; Mainzer, A. K.; Grav, T.; Bauer, J. M.; Cutri, R. M.; Nugent, C.; Cabrera, M. S. (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. Retrieved November 2015.
    8. 1 2 Behrend, Raoul. "Asteroids and comets rotation curves – (1695) Walbeck". Geneva Observatory. Retrieved November 2015.
    9. 1 2 Székely, P.; Kiss, L. L.; Szabó, Gy. M.; Sárneczky, K.; Csák, B.; Váradi, M.; Mészáros, Sz. (August 2005). "CCD photometry of 23 minor planets". Planetary and Space Science 53 (9): 925–936. arXiv:astro-ph/0504462. Bibcode:2005P&SS...53..925S. doi:10.1016/j.pss.2005.04.006. Retrieved November 2015.
    10. ↑ "1695 Walbeck (1941 UO)". Minor Planet Center. Retrieved November 2015.

    External links


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