Astronomy:754 Malabar
| Discovery | |
|---|---|
| Discovered by | August Kopff |
| Discovery site | Heidelberg |
| Discovery date | 22 August 1906 |
| Designations | |
| (754) Malabar | |
| Pronunciation | /mæləˈbɑːr/[2] |
| Named after | Mount Malabar, West Java[1] |
| 1906 UT | |
| Orbital characteristics[3] | |
| Epoch 31 July 2016 (JD 2457600.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 114.41 yr (41,787 d) |
| |{{{apsis}}}|helion}} | 3.1294 astronomical unit|AU (468.15 Gm) |
| |{{{apsis}}}|helion}} | 2.8436 AU (425.40 Gm) |
| 2.9865 AU (446.77 Gm) | |
| Eccentricity | 0.047851 |
| Orbital period | 5.16 yr (1,885.1 d) |
| Mean anomaly | 326.44° |
| Mean motion | 0° 11m 27.492s / day |
| Inclination | 24.565° |
| Longitude of ascending node | 180.049° |
| 302.528° | |
| Earth MOID | 1.89316 AU (283.213 Gm) |
| Jupiter MOID | 1.90731 AU (285.330 Gm) |
| TJupiter | 3.119 |
| Physical characteristics | |
| Mean radius | 43.81±2.8 km |
| Rotation period | 11.740 h (0.4892 d) |
| Geometric albedo | 0.0485±0.007 |
| Ch[4] | |
| Absolute magnitude (H) | 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 astronomical unit|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
- ↑ (in Indonesian) http://langitselatan.com/2011/01/12/nama-nama-indonesia-pun-tertera-di-angkasa/
- ↑ Noah Webster (1884) A Practical Dictionary of the English Language
- ↑ 3.0 3.1 "754 Malabar (1906 UT)". JPL Small-Body Database. NASA/Jet Propulsion Laboratory. https://ssd.jpl.nasa.gov/sbdb.cgi?sstr=754.
- ↑ 4.0 4.1 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, doi:10.1088/0004-6256/150/6/198, 198, Bibcode: 2015AJ....150..198R.
- ↑ 5.0 5.1 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.
External links
- 754 Malabar at AstDyS-2, Asteroids—Dynamic Site
- 754 Malabar at the JPL Small-Body Database
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