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| Orbit Diagram
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| 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. |
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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).
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Orbital Elements at Epoch 2456400.5 (2013-Apr-18.0) TDB
Reference: MPO236445 (heliocentric ecliptic J2000)
| Element | Value | Uncertainty (1-sigma) | Units |
| e | 0.1325275 | n/a | |
| a | 2.3092794 | n/a | AU |
| q | 2.0032364 | n/a | AU |
| i | 6.46216 | n/a | deg |
| node | 45.87185 | n/a | deg |
| peri | 228.61712 | n/a | deg |
| M | 64.39304 | n/a | deg |
| tp | 2456171.2287608
(2012-Aug-31.72876080) | n/a | JED |
| period | 1281.7789953
3.51 | n/a
n/a | d
yr |
| n | 0.28085965 | n/a | deg/d |
| Q | 2.6153224 | n/a | AU |
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| | Orbit Determination Parameters
Additional Information
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Physical Parameter Table
| Parameter |
Symbol |
Value |
Units |
Sigma |
Reference |
Notes |
| absolute magnitude |
H |
15.1 |
mag |
n/a |
PDS3 (MPC 32205) |
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| 9135 Lacaille | Discovered 1960 Oct. 17 by C. J. van Houten and I. van Houten-Groeneveld on Palomar Schmidt plates taken by T. Gehrels. |
| Named in memory of Nicolas-Louis de Lacaille (1713-1762), French astronomer known as the "father of southern astronomy" for his naming of southern constellations and his countless astrometric observations of planets and stars. In 1750, the abbé Lacaille went to an expedition to the Cape for trigonometric determinations of the lunar and solar parallax, his observations being partly supported by simultaneous measurements by Lalande in Berlin. Lacaille's observations of the southern heavens resulted in a famous catalogue of 9766 stars, a work that was eventually published in 1847 by Baily. Lacaille is also known as a precise observer of comet 1P/Halley in 1759. |
| NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) |
| Reference: 19990402/MPCPages.arc | Last Updated: 2010-06-11 |
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