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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.
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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
Element | Value | Uncertainty (1-sigma) | Units |
e | .05844868230309026 | 6.7487e-08 | |
a | 5.273747268451037 | 9.9194e-08 | au |
q | 4.965503689810552 | 3.4072e-07 | au |
i | 20.36390874588013 | 6.3789e-06 | deg |
node | 147.505675708248 | 1.3969e-05 | deg |
peri | 218.5640295513583 | 4.9421e-05 | deg |
M | 180.8601608203648 | 5.042e-05 | deg |
tp | 2460801.738379296404 (2025-May-06.23837930) | 0.00065127 | TDB |
period | 4423.615763951135 12.11 | 0.00012481 3.417e-07 | d yr |
n | .08138139006866435 | 2.2961e-09 | deg/d |
Q | 5.581990847091522 | 1.0499e-07 | au |
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| | Orbit Determination Parameters
Additional Information
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[ hide covariance matrix ]
Orbital Elements at Epoch 2456746.5 (2014-Mar-30.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
Element | Value | Uncertainty (1-sigma) | Units |
e | .05946319328660599 | 6.7396e-08 | |
q | 4.967615975251549 | 3.4051e-07 | au |
tp | 2456395.456499504758 (2013-Apr-12.95649950) | 0.00058323 | TDB |
node | 147.5027090908389 | 1.397e-05 | deg |
peri | 219.9880634157498 | 4.8666e-05 | deg |
i | 20.35617940433655 | 6.3764e-06 | deg |
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| | Orbit Determination Parameters
Additional Information
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Orbit Covariance (6×6)
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|
e |
q |
tp |
node |
peri |
i |
e |
4.542211463406504E-15 |
-2.212148354864041E-14 |
1.530430150987493E-12 |
-5.880038579223463E-15 |
-5.586504059746462E-14 |
-3.55585255264837E-15 |
q |
-2.212148354864041E-14 |
1.159480480928272E-13 |
1.280788183592842E-11 |
3.641714352372916E-14 |
1.947808460381803E-12 |
2.110539689820067E-14 |
tp |
1.530430150987493E-12 |
1.280788183592842E-11 |
3.401599461557494E-7 |
4.442669299000684E-12 |
2.719948743890247E-8 |
-2.832731517933391E-11 |
node |
-5.880038579223463E-15 |
3.641714352372916E-14 |
4.442669299000684E-12 |
1.951572837517935E-10 |
-1.820097554633289E-10 |
1.187964820952433E-11 |
peri |
-5.586504059746462E-14 |
1.947808460381803E-12 |
2.719948743890247E-8 |
-1.820097554633289E-10 |
2.36835738902349E-9 |
-1.323925312600164E-11 |
i |
-3.55585255264837E-15 |
2.110539689820067E-14 |
-2.832731517933391E-11 |
1.187964820952433E-11 |
-1.323925312600164E-11 |
4.065831821884295E-11 |
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Physical Parameter Table
Parameter |
Symbol |
Value |
Units |
Sigma |
Reference |
Notes |
absolute magnitude |
H |
10.2 |
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n/a |
MPO350865 |
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diameter |
diameter |
42.516 |
km |
0.955 |
urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2012ApJ...759...49G) |
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geometric albedo |
albedo |
0.089 |
|
0.008 |
urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (http://adsabs.harvard.edu/abs/2012ApJ...759...49G) |
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7815 Dolon (1987 QN) Discovered 1987-Aug-21 by Elst, E. W. at La Silla |
Reference: DISCOVERY.DB | Last Updated: 2003-08-29 |
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