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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
| Element | Value | Uncertainty (1-sigma) | Units |
| e | .03766565585506313 | 3.2474e-08 | |
| a | 2.598953524614606 | 9.8609e-09 | au |
| q | 2.501062235573169 | 8.4436e-08 | au |
| i | 3.061545016621467 | 4.1685e-06 | deg |
| node | 181.7607251029432 | 5.9756e-05 | deg |
| peri | 55.21635814335529 | 8.1627e-05 | deg |
| M | 271.1611012678324 | 5.7503e-05 | deg |
| tp | 2459774.156411762048
(2022-Jul-13.65641176) | 0.00024489 | TDB |
| period | 1530.369130804062
4.19 | 8.7097e-06
2.385e-08 | d
yr |
| n | .2352373638187897 | 1.3388e-09 | deg/d |
| Q | 2.696844813656043 | 1.0232e-08 | au |
|
| | Orbit Determination Parameters
Additional Information
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[ show covariance matrix ]
Physical Parameter Table
| Parameter |
Symbol |
Value |
Units |
Sigma |
Reference |
Notes |
| absolute magnitude |
H |
14.84 |
|
n/a |
MPCxxxxx |
|
| diameter |
diameter |
2.804 |
km |
0.411 |
urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M) |
|
| geometric albedo |
albedo |
0.356 |
|
0.274 |
urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M) |
|
|
| 11769 Alfredjoy | Discovered 1973 Sept. 29 by C. J. van Houten and I. van Houten-Groeneveld on Palomar Schmidt plates taken by T. Gehrels. |
| Alfred H. Joy (1882-1973) was an astronomer at the Mount Wilson Observatory from 1915 to 1973 who measured spectroscopic parallaxes and radial velocities of stars and studied variable stars. He invented the T Tauri classification. |
| NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) |
| Reference: 20071124/MPCPages.arc | Last Updated: 2007-11-26 |
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