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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 16 (heliocentric ecliptic J2000)
| Element | Value | Uncertainty (1-sigma) | Units |
| e | .1591960392485235 | 5.781e-08 | |
| a | 2.43322204980208 | 1.7548e-08 | au |
| q | 2.045862736861416 | 1.3784e-07 | au |
| i | 6.926946793322355 | 6.4199e-06 | deg |
| node | 287.3888757637038 | 5.0571e-05 | deg |
| peri | 238.6657682605247 | 5.4764e-05 | deg |
| M | 33.62198134690588 | 2.5511e-05 | deg |
| tp | 2459071.023233777208
(2020-Aug-09.52323378) | 9.7414e-05 | TDB |
| period | 1386.344110993173
3.80 | 1.4998e-05
4.106e-08 | d
yr |
| n | .2596757883885676 | 2.8092e-09 | deg/d |
| Q | 2.820581362742745 | 2.0342e-08 | au |
|
| | Orbit Determination Parameters
Additional Information
|
[ hide covariance matrix ]
Orbital Elements at Epoch 2456806.5 (2014-May-29.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
| Element | Value | Uncertainty (1-sigma) | Units |
| e | .1593413166563099 | 5.7907e-08 | |
| q | 2.04609959089303 | 1.3815e-07 | au |
| tp | 2456298.484717131934
(2013-Jan-05.98471713) | 8.3482e-05 | TDB |
| node | 287.4508309633518 | 5.0564e-05 | deg |
| peri | 238.8067724139018 | 5.4734e-05 | deg |
| i | 6.926978340168858 | 6.4199e-06 | deg |
|
| | Orbit Determination Parameters
Additional Information
|
Orbit Covariance (6×6)
|
| |
e |
q |
tp |
node |
peri |
i |
| e |
3.353271389253851E-15 |
-7.95721450264642E-15 |
2.339963282159076E-13 |
-2.833098733571578E-14 |
1.627274757659128E-13 |
9.870250518782834E-16 |
| q |
-7.95721450264642E-15 |
1.908507307691748E-14 |
-1.792266606669228E-13 |
6.960955877076581E-14 |
-2.835741048600215E-13 |
-2.34828404727754E-15 |
| tp |
2.339963282159076E-13 |
-1.792266606669228E-13 |
6.969311478852956E-9 |
1.371383557896382E-11 |
1.780394425932737E-9 |
-2.401119683523158E-12 |
| node |
-2.833098733571578E-14 |
6.960955877076581E-14 |
1.371383557896382E-11 |
2.556740977463403E-9 |
-2.533962361987517E-9 |
1.905646693251357E-12 |
| peri |
1.627274757659128E-13 |
-2.835741048600215E-13 |
1.780394425932737E-9 |
-2.533962361987517E-9 |
2.995780860803419E-9 |
-2.485516858078314E-12 |
| i |
9.870250518782834E-16 |
-2.34828404727754E-15 |
-2.401119683523158E-12 |
1.905646693251357E-12 |
-2.485516858078314E-12 |
4.121559303619151E-11 |
|
Physical Parameter Table
| Parameter |
Symbol |
Value |
Units |
Sigma |
Reference |
Notes |
| absolute magnitude |
H |
16.01 |
|
n/a |
E2021B55 |
|
| diameter |
diameter |
2.958 |
km |
0.654 |
urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M) |
|
| geometric albedo |
albedo |
0.088 |
|
0.015 |
urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M) |
|
|
| 117329 Spencer | Discovered 2004 Dec. 9 at the Jarnac Observatory. |
| Henry Spencer (b. 1955) is a Canadian computer scientist and small-satellite engineer. He has been a pioneer of open-source software, including C News and the "regex" pattern-matching library. He is also the keeper of the oldest surviving Usenet archives and the software architect for the MOST astronomy satellite. |
| NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) |
| Reference: 20060809/MPCPages.arc | Last Updated: 2007-08-08 |
|
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