1428 Mombasa

1428 Mombasa
Discovery [1]
Discovered by C. Jackson
Discovery site Johannesburg Obs.
Discovery date 5 July 1937
Designations
MPC designation 1428 Mombasa
Named after
 Mombasa
(city, port)[2]
1937 NO · 1933 WO
1949 FA · 1957 YZ
main-belt · (outer) [3]
Orbital characteristics [1]
Epoch 31 July 2016 (JD 2457600.5)
Uncertainty parameter 0
Observation arc 82.42 yr (30103 days)
Aphelion 3.2040 AU (479.31 Gm)
Perihelion 2.4166 AU (361.52 Gm)
2.8103 AU (420.41 Gm)
Eccentricity 0.14009
4.71 yr (1720.8 d)
222.01°
0° 12m 33.156s / day
Inclination 17.303°
115.73°
252.54°
Earth MOID 1.47446 AU (220.576 Gm)
Jupiter MOID 2.33552 AU (349.389 Gm)
Jupiter Tisserand parameter 3.241
Physical characteristics
Dimensions 56.63 km[4]
55.34±0.70 km[5]
127.203±29.18 km[6]
62.45±0.73 km[7]
56.83 km (derived)[3]
Mean radius
 28.315±1 km
16.67 h (0.695 d)[lower-alpha 1][1]
17.12±0.01 h[8]
17.6±0.2 h[9]
0.0240[4]
0.025±0.001[5]
0.0010±0.0099[6]
0.038±0.004[7]
0.0415 (derived)[3]
0.0240±0.002[1]
SMASS = Xc
C [3]
10.3

    1428 Mombasa, provisional designation 1937 NO, is a large asteroid from the outer region of the asteroid belt, about 57 kilometers in diameter. It was discovered by English-born South African astronomer Cyril Jackson at Union Observatory, Johannesburg on 5 July 1937.[10]

    The X-type asteroid orbits the Sun at a distance of 2.4–3.2 AU once every 4 years and 9 months (1,724 days). Its orbit shows an eccentricity of 0.14 and is tilted by 17 degrees to the plane of the ecliptic. It has a rotation period of about 17 hours[lower-alpha 1] and a very low albedo of between 0.01 and 0.04, according to the surveys carried out by IRAS, Akari, WISE and NEOWISE.[4][5][6][7]

    The minor planet was named after Mombasa, chief-port on the coast of Kenya and its second largest city.[2]

    References

    1. 1 2 Stephens (2012) web: rotation period 16.67±0.01 hours with a brightness amplitude of 0.16 mag. Notes: "A half-period of 8.38 h cannot be formally excluded". Summary figures at Collaborative Asteroid Lightcurve Link (CALL) for (1428) Mombasa
    1. 1 2 3 4 "JPL Small-Body Database Browser: 1428 Mombasa (1937 NO)" (2015-05-27 last obs.). Jet Propulsion Laboratory. Retrieved 27 April 2016.
    2. 1 2 Schmadel, Lutz D. (2003). Dictionary of Minor Planet Names – (1428) Mombasa. Springer Berlin Heidelberg. p. 115. ISBN 978-3-540-29925-7. Retrieved 19 November 2015.
    3. 1 2 3 4 "LCDB Data for (1428) Mombasa". Asteroid Lightcurve Database (LCDB). Retrieved 19 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 19 November 2015.
    5. 1 2 3 Usui, Fumihiko; Kuroda, Daisuke; Müller, Thomas G.; Hasegawa, Sunao; 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 19 November 2015.
    6. 1 2 3 Mainzer, A.; Grav, T.; Masiero, J.; Hand, E.; 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 19 November 2015.
    7. 1 2 3 Masiero, Joseph R.; Mainzer, A. K.; Grav, T.; Bauer, J. M.; et al. (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 19 November 2015.
    8. ↑ Hawkins, Scot; Ditteon, Richard (March 2008). "Asteroid Lightcurve Analysis at the Oakley Observatory - May 2007". The Minor Planet Bulletin. 35 (1): 1–4. Bibcode:2008MPBu...35....1H. ISSN 1052-8091. Retrieved 19 November 2015.
    9. ↑ Behrend, Raoul. "Asteroids and comets rotation curves – (1428) Mombasa". Geneva Observatory. Retrieved 19 November 2015.
    10. ↑ "1428 Mombasa (1937 NO)". Minor Planet Center. Retrieved 19 November 2015.

    External links


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