1817 Katanga

1817 Katanga
Discovery [1]
Discovered by C. Jackson
Discovery site Johannesburg (UO)
Discovery date 20 June 1939
Designations
MPC designation 1817 Katanga
Named after
 Katanga Province
(Congo, Dem. Rep.)[2]
1939 MB · 1928 KD
1950 NK · 1971 BG
main-belt · Phocaea [3]
Orbital characteristics [1]
Epoch 13 January 2016 (JD 2457400.5)
Uncertainty parameter 0
Observation arc 76.75 yr (28033 days)
Aphelion 2.8250 AU (422.61 Gm)
Perihelion 1.9170 AU (286.78 Gm)
2.3710 AU (354.70 Gm)
Eccentricity 0.19149
3.65 yr (1333.5 d)
11.315°
0° 16m 11.856s / day
Inclination 25.710°
88.736°
140.18°
Earth MOID 0.942834 AU (141.0460 Gm)
Jupiter MOID 2.32488 AU (347.797 Gm)
Jupiter Tisserand parameter 3.388
Physical characteristics
Dimensions 15.90 km[4]
9.76±1.21 km[5]
15.89±1.56 km[6]
16.35 km (derived)[3]
Mean radius
 7.95 ± 0.5 km
8.481 h (0.3534 d)[1][7]
6.35±0.02 h[8]
7.2165±0.0003 h[9]
0.1331[4]
0.353±0.089[5]
0.342±0.151[6]
0.2632 (derived)[3]
0.1331 ± 0.018[1]
S [3]
11.0

    1817 Katanga, provisional designation 1939 MB, is a stony asteroid in from the inner regions of the asteroid belt. It was discovered by English-born South African astronomer Cyril Jackson at Johannesburg Union Observatory, South Africa on 20 June 1939.[10] It belongs to the small group of asteroids of the Phocaea family and measures about 16 kilometers in diameter, although observations from the Akari satellite gave a much lower size.[3][4][5][6]

    The S-type asteroid orbits the Sun at a distance of 1.9–2.8 AU once every 3 years and 8 months (1,334 days). Its eccentric orbit is inclined by 26 degrees to the ecliptic plane.[1] Katanga has a rotation period between 6.3 and 8.5 hours, depending on different measurements[7][8][9] and a relatively high geometric albedo of 0.34,[5][6] despite seemingly inaccurate data from older observations made by the Infrared Astronomical Satellite, IRAS.[4]

    The asteroid was named after the Katanga Province, a rich mining region in the Democratic Republic of the Congo, Africa.[2]

    References

    1. 1 2 3 4 5 "JPL Small-Body Database Browser: 1817 Katanga (1939 MB)" (2015-06-09 last obs.). Jet Propulsion Laboratory. Retrieved 20 April 2016.
    2. 1 2 Schmadel, Lutz D. (2003). Dictionary of Minor Planet Names – (1817) Katanga. Springer Berlin Heidelberg. p. 145. ISBN 978-3-540-29925-7. Retrieved 22 August 2016.
    3. 1 2 3 4 5 "LCDB Data for (1817) Katanga". Asteroid Lightcurve Database (LCDB). Retrieved 22 August 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 22 August 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 22 August 2016.
    6. 1 2 3 4 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:1209.5794Freely accessible. Bibcode:2012ApJ...759L...8M. doi:10.1088/2041-8205/759/1/L8. Retrieved 22 August 2016.
    7. 1 2 Warner, Brian D. (October 2008). "Asteroid Lightcurve Analysis at the Palmer Divide Observatory: February-May 2008". The Minor Planet Bulletin. 35 (4): 163–166. Bibcode:2008MPBu...35..163W. ISSN 1052-8091. Retrieved 22 August 2016.
    8. 1 2 Malcolm, G. (June 2002). "Rotational Periods and Lightcurves of 445 Edna, 1817 Katanga and 1847 Stobbe". The Minor Planet Bulletin. 29. Bibcode:2002MPBu...29...28M. Retrieved 22 August 2016.
    9. 1 2 Sposetti, Stefano. "Asteroids and comets rotation curves (1817) Katanga". Geneva Observatory. Retrieved 22 August 2016.
    10. ↑ "1817 Katanga (1939 MB)". Minor Planet Center. Retrieved 22 August 2016.

    External links


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