3749 Balam
| Discovery | |
|---|---|
| Discovered by | E. Bowell |
| Discovery site | Anderson Mesa Station |
| Discovery date | 24 January 1982 |
| Designations | |
| MPC designation | 3749 Balam |
|
Named after
|
David Balam (astronomer) |
|
1982 BG1 · 1954 XM 1962 ED · 1974 YO |
|
| main-belt · Flora | |
| Orbital characteristics | |
| Epoch 13 January 2016 (JD 2457400.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 22383 days (61.28 yr) |
| Aphelion | 2.4822 AU (371.33 Gm) |
| Perihelion | 1.9916 AU (297.94 Gm) |
| 2.2369 AU (334.64 Gm) | |
| Eccentricity | 0.10966 |
| 3.35 yr (1222.0 d) | |
| 77.251° | |
| 0° 17m 40.596s / day | |
| Inclination | 5.3806° |
| 295.72° | |
| 173.90° | |
| Known satellites | 2 satellites 5.2±1 km, 1.5 km |
| Earth MOID | 1.00818 AU (150.822 Gm) |
| Jupiter MOID | 2.61697 AU (391.493 Gm) |
| Jupiter Tisserand parameter | 3.624 |
| Physical characteristics | |
| Dimensions | 7.2 km 4.7±0.5 km 6.36 km (calculated) |
| Mass | (5.09±0.2)×1014 kg |
|
Mean density
|
2.61±0.45 g/cm³ |
| 2.80483 h (0.116868 d) 2.80490±0.00008 h 2.80478±0.00005 h 2.80494±0.00007 h |
|
| 0.16 0.3546±0.0671 0.277±0.096 0.15 (assumed) |
|
| S | |
| 13.3 | |
3749 Balam, provisionally known as 1982 BG1, is a trinary asteroid orbiting the inner regions of asteroid belt, about 7 kilometers in diameter. It was discovered by American astronomer Edward Bowell at Lowell's Anderson Mesa Station near Flagstaff, Arizona on 24 January 1982.
The asteroid is a member of the Flora family, a very large group of stony asteroids in the inner main-belt. It orbits the Sun at a distance of 2.0–2.5 AU once every 3 years and 4 months (1,222 days). Its orbit shows an eccentricity of 0.11 and is tilted by 5 degrees to the plane of the ecliptic. The S-type asteroid has an albedo of 0.16. The body's rotation around its axis has been measured several times by different light-curve observations with a concurring period of 2.8 hours.
It is named after the Canadian astronomer David Balam, principal observer at Victoria's Climenhaga Observatory in British Columbia.
On February 13, 2002, the discovery of a satellite with a diameter of approximately 1.5 kilometers, designated S/2002 (3749) 1, was announced by a team of researchers from SwRI, UA, JPL and OSUG, using the Gemini North Telescope on Mauna Kea in Hawaii. It orbits 289±13 km away in 61±10 days, with an orbital eccentricity of ~ 0.9.
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