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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
| Element | Value | Uncertainty (1-sigma) | Units |
| e | .1140294266526596 | 2.149e-07 | |
| a | 2.527496515352933 | 9.753e-09 | au |
| q | 2.239287536840644 | 5.4592e-07 | au |
| i | 5.412934134571175 | 4.4202e-06 | deg |
| node | 341.2912812701798 | 3.5487e-05 | deg |
| peri | 193.7324189065575 | 4.2357e-05 | deg |
| M | 307.5322113445998 | 3.9631e-05 | deg |
| tp | 2459414.406772439555
(2021-Jul-18.90677244) | 0.00016205 | TDB |
| period | 1467.689796953428
4.02 | 8.4952e-06
2.326e-08 | d
yr |
| n | .2452834384672249 | 1.4197e-09 | deg/d |
| Q | 2.815705493865223 | 1.0865e-08 | au |
|
| | Orbit Determination Parameters
Additional Information
|
[ show covariance matrix ]
Physical Parameter Table
| Parameter |
Symbol |
Value |
Units |
Sigma |
Reference |
Notes |
| absolute magnitude |
H |
14.58 |
|
n/a |
E2021B10 |
|
| diameter |
diameter |
4.068 |
km |
0.483 |
urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M) |
|
| geometric albedo |
albedo |
0.185 |
|
0.019 |
urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M) |
|
|
| 70536 (1999 TW121) Discovered 1999-Oct-04 by LINEAR at Socorro |
| Reference: 20031109/Numbers.arc | Last Updated: 2004-04-19 |
|
Alternate Designations
| 1999 TW121 = 1977 DR5 = 1993 DY2 |
|
|
