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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 | .09564545005589901 | 4.1866e-08 | |
| a | 2.59195496138372 | 9.4625e-09 | au |
| q | 2.344046262577554 | 1.087e-07 | au |
| i | 4.320926376056172 | 3.1219e-06 | deg |
| node | 295.4095215527559 | 6.0498e-05 | deg |
| peri | 57.52032461356646 | 6.3209e-05 | deg |
| M | 33.36830897912044 | 1.764e-05 | deg |
| tp | 2459059.223053193866
(2020-Jul-28.72305319) | 7.4804e-05 | TDB |
| period | 1524.191737796261
4.17 | 8.3466e-06
2.285e-08 | d
yr |
| n | .2361907567616807 | 1.2934e-09 | deg/d |
| Q | 2.839863660189886 | 1.0367e-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 |
14.65 |
|
n/a |
E2021B10 |
|
| diameter |
diameter |
3.394 |
km |
0.676 |
urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M) |
|
| geometric albedo |
albedo |
0.292 |
|
0.116 |
urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M) |
|
|
| 21330 Alanwhitman | Discovered 1997 Jan. 11 by Spacewatch at Kitt Peak. |
| Alan Douglas Whitman (b. 1946) is a Canadian amateur astronomer and former weather service officer. He is a skillful observer and has written and lectured widely. Name suggested by R. and P. Jedicke. |
| NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) |
| Reference: MPC batch dated 2016-06-20 | Last Updated: 2016-06-21 |
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