3749 Balam
| Discovery [1] | |
|---|---|
| Discovered by | E. Bowell |
| Discovery site | Anderson Mesa Station |
| Discovery date | 24 January 1982 |
| Designations | |
| MPC designation | 3749 Balam |
|
Named after
|
David Balam (astronomer)[2] |
| 1982 BG1 · 1954 XM 1962 ED · 1974 YO |
|
| main-belt · Flora [3] | |
| Orbital characteristics [1] | |
| Epoch 27 June 2015 (JD 2457200.5) | |
| Uncertainty parameter 0 | |
| Observation arc | 60.31 yr (22,028 days) |
| Aphelion | 2.4821 AU |
| Perihelion | 1.9920 AU |
| 2.2370 AU | |
| Eccentricity | 0.1095 |
| 3.35 yr (1222.1 days) | |
| 18.230° | |
| Inclination | 5.3817° |
| 295.74° | |
| 174.01° | |
| Known satellites | 2 satellites 5.2±1 km, 1.5 km |
| Physical characteristics | |
| Dimensions | 7.2 km[4] 4.7±0.5 km[5] 6.36 km (calculated)[3] |
| Mass | (5.09±0.2)×1014 kg[4][6] |
|
Mean density
|
2.61±0.45 g/cm³[4][6] |
| 2.80483 h[7] 2.80490±0.00008 h[8] 2.80478±0.00005 h[lower-alpha 1] 2.80494±0.00007 h[9] |
|
| 0.16[10] 0.3546±0.0671[11] 0.277±0.096[5] 0.15 (assumed)[3] |
|
| S [3][10] | |
| 13.3 | |
| <templatestyles src="Reflist/styles.css" />
Cite error: Invalid <references />, or <references group="..." /> |
|
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.[12]
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.[10] 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.[7][8][9][lower-alpha 1]
It is named after the Canadian astronomer David Balam, principal observer at Victoria's Climenhaga Observatory in British Columbia.[2]
Satellite system
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.[13] It orbits 289±13 km away in 61±10 days, with an orbital eccentricity of ~ 0.9.[6]
Being such as small primary body in the inner main belt with a separation of over 100 primary radii, S/2002 (3749) 1 is the most loosely bound binary known.[14] Balam has a Hill sphere with a radius of about 1,500 kilometers.[6]
In March 2008, Franck Marchis discovered a larger (~3 km) inner companion, making this a triple system.[15][16][17]
References
<templatestyles src="Reflist/styles.css" />
Cite error: Invalid <references> tag; parameter "group" is allowed only.
<references />, or <references group="..." /><templatestyles src="Reflist/styles.css" />
Cite error: Invalid <references> tag; parameter "group" is allowed only.
<references />, or <references group="..." />External links
- Orbital simulation from JPL (Java) / Ephemeris
- IAUC 7827
- Franck Marchis entry for 3749 Balam
- Orbits of Binary Asteroids with Adaptive Optics (VLT images)
- ↑ 1.0 1.1 Lua error in package.lua at line 80: module 'strict' not found.
- ↑ 2.0 2.1 Lua error in package.lua at line 80: module 'strict' not found.
- ↑ 3.0 3.1 3.2 3.3 Lua error in package.lua at line 80: module 'strict' not found.
- ↑ 4.0 4.1 4.2 Lua error in package.lua at line 80: module 'strict' not found.
- ↑ 5.0 5.1 Lua error in package.lua at line 80: module 'strict' not found.
- ↑ 6.0 6.1 6.2 6.3 Lua error in package.lua at line 80: module 'strict' not found.
- ↑ 7.0 7.1 Lua error in package.lua at line 80: module 'strict' not found.
- ↑ 8.0 8.1 Lua error in package.lua at line 80: module 'strict' not found.
- ↑ 9.0 9.1 Lua error in package.lua at line 80: module 'strict' not found.
- ↑ 10.0 10.1 10.2 Lua error in package.lua at line 80: module 'strict' not found.
- ↑ Lua error in package.lua at line 80: module 'strict' not found.
- ↑ Lua error in package.lua at line 80: module 'strict' not found.
- ↑ Lua error in package.lua at line 80: module 'strict' not found.
- ↑ Lua error in package.lua at line 80: module 'strict' not found.
- ↑ Lua error in package.lua at line 80: module 'strict' not found.
- ↑ Lua error in package.lua at line 80: module 'strict' not found.
- ↑ Lua error in package.lua at line 80: module 'strict' not found.
Cite error: <ref> tags exist for a group named "lower-alpha", but no corresponding <references group="lower-alpha"/> tag was found, or a closing </ref> is missing
