[ hide orbit diagram ]
| Orbit Diagram
|
| Note:
Make sure you have Java enabled on your browser to see the applet.
This applet is provided as a 3D orbit visualization tool.
The applet was implemented using 2-body methods,
and hence should not be used for determining accurate long-term trajectories
(over several years or decades) or planetary encounter circumstances.
For accurate long-term ephemerides, please instead use our Horizons system. |
|
|
|
Additional Notes: the orbits shown in the applet are color coded. The planets are white lines, and the asteroid/comet is a blue line. The bright white line indicates the portion of the orbit that is above the ecliptic plane, and the darker portion is below the ecliptic plane. Likewise for the asteroid/comet orbit, the light blue indicates the portion above the ecliptic plane, and the dark blue the portion below the ecliptic plane.
Orbit Viewer applet originally written and kindly provided by
Osamu Ajiki (AstroArts),
and further modified by
Ron Baalke (JPL).
|
|
|
Orbital Elements at Epoch 2456400.5 (2013-Apr-18.0) TDB
Reference: JPL 1 (heliocentric ecliptic J2000)
| Element | Value | Uncertainty (1-sigma) | Units |
| e | .1223622607297982 | 8.3216e-08 | |
| a | 3.089237306438814 | 3.2534e-08 | AU |
| q | 2.711231245692128 | 2.5907e-07 | AU |
| i | 11.00822661815642 | 9.8792e-06 | deg |
| node | 162.6542274073425 | 3.1719e-05 | deg |
| peri | 220.764921058893 | 4.5375e-05 | deg |
| M | 210.1912305984635 | 3.4055e-05 | deg |
| tp | 2457225.796624665605
(2015-Jul-22.29662467) | 0.00019236 | JED |
| period | 1983.240274027446
5.43 | 3.1329e-05
8.577e-08 | d
yr |
| n | .1815211221325863 | 2.8675e-09 | deg/d |
| Q | 3.467243367185499 | 3.6515e-08 | AU |
|
| | Orbit Determination Parameters
Additional Information
|
[ show covariance matrix ]
Physical Parameter Table
| Parameter |
Symbol |
Value |
Units |
Sigma |
Reference |
Notes |
| absolute magnitude |
H |
11.00 |
mag |
n/a |
IRAS-A-FPA-3-RDR-IMPS-V6.0 |
IRAS observations used: 4 |
| diameter |
diameter |
26.02 |
km |
1.5 |
IRAS-A-FPA-3-RDR-IMPS-V6.0 |
IRAS observations used: 4 |
| geometric albedo |
albedo |
0.1039 |
|
0.013 |
IRAS-A-FPA-3-RDR-IMPS-V6.0 |
IRAS observations used: 4 |
|
| 4843 Mégantic | Discovered 1990 Feb. 28 by H. Debehogne at the European Southern Observatory. |
| Named for Mont Mégantic, the largest observatory in Québec. Founded in 1978, its mission is to promote research in astrophysics, to train students and to promote astronomy in the local culture. The observatory is jointly operated by the Université de Montréal and the Université Laval. Name proposed by the discoverer, following a suggestion by P. Bastien and Y. Dutil. |
| NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) |
| Reference: 19980808/MPCPages.arc | Last Updated: 2009-11-17 |
|
Alternate Designations
| 1990 DR4 = 1982 RT1 = 1990 EO10 = A908 BH |
|
|
|
