754 Malabar

754 Malabar
Discovery
Discovered byAugust Kopff
Discovery siteHeidelberg
Discovery date22 August 1906
Designations
(754) Malabar
Pronunciation/mæləˈbɑːr/[1]
Named after
Mount Malabar, West Java[2]
1906 UT
Orbital characteristics[3]
Epoch 31 July 2016 (JD 2457600.5)
Uncertainty parameter 0
Observation arc114.41 yr (41,787 d)
Aphelion3.1294 AU (468.15 Gm)
Perihelion2.8436 AU (425.40 Gm)
2.9865 AU (446.77 Gm)
Eccentricity0.047851
5.16 yr (1,885.1 d)
326.44°
0° 11m 27.492s / day
Inclination24.565°
180.049°
302.528°
Earth MOID1.89316 AU (283.213 Gm)
Jupiter MOID1.90731 AU (285.330 Gm)
TJupiter3.119
Physical characteristics
43.81±2.8 km
11.740 h (0.4892 d)
0.0485±0.007
Ch[4]
9.19

754 Malabar is a minor planet orbiting the Sun. It was discovered in 1906 by German astronomer August Kopff from Heidelberg, and was named in honor of a Dutch-German solar eclipse expedition to Christmas Island in 1922. Malabar is the name of a city and mountain in Indonesia.[5] This object is orbiting at a distance of 2.99 AU from the Sun with a period of 5.16 years and an eccentricity (ovalness) of 0.048. Its orbital plane is inclined at an angle of 24.6° to the plane of the ecliptic.[3]

Photometric measurements of this asteroid made in 2003 resulted in a light curve showing a rotation period of 11.740±0.005 h and a brightness variation of 0.45±0.03 in magnitude.[5] This is a Ch-class asteroid in the Bus asteroid taxonomy, showing a broad absorption band in its carbonaceous spectrum near a wavelength of 0.7 μm. This feature is interpreted as due to iron-bearing phyllosilicates on the surface. 754 Malabar spans a girth of 102.8 km.[4] Between 2002 and 2022, 754 Malabar has been observed to occult sixteen stars.

References

  1. ^ Noah Webster (1884) A Practical Dictionary of the English Language
  2. ^ (in Indonesian) http://langitselatan.com/2011/01/12/nama-nama-indonesia-pun-tertera-di-angkasa/
  3. ^ a b "754 Malabar (1906 UT)". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. Retrieved 5 May 2016.
  4. ^ a b Rivkin, Andrew S.; et al. (December 2015), "The Ch-class Asteroids: Connecting a Visible Taxonomic Class to a 3 μm Band Shape", The Astronomical Journal, 150 (6): 14, arXiv:1511.01196, Bibcode:2015AJ....150..198R, doi:10.1088/0004-6256/150/6/198, 198.
  5. ^ a b Stephens, Robert D. (December 2003), "Photometry of 628 Christine, 754 Malabar, 815 Coppelia, and 1025 Riema", Bulletin of the Minor Planets Section of the Association of Lunar and Planetary Observers, 30 (4): 69–70, Bibcode:2003MPBu...30...69S.


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