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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
Element | Value | Uncertainty (1-sigma) | Units |
e | .1640914376692062 | 4.4576e-08 | |
a | 2.289313021430516 | 1.0052e-08 | au |
q | 1.913656356469148 | 1.0328e-07 | au |
i | 4.898927502606077 | 4.3192e-06 | deg |
node | 246.8888021220273 | 5.3267e-05 | deg |
peri | 150.5738542058263 | 5.4915e-05 | deg |
M | 198.1912290556148 | 1.6341e-05 | deg |
tp | 2459569.164022825275 (2021-Dec-20.66402283) | 5.9908e-05 | TDB |
period | 1265.191293539103 3.46 | 8.3333e-06 2.282e-08 | d yr |
n | .2845419517494282 | 1.8742e-09 | deg/d |
Q | 2.664969686391883 | 1.1702e-08 | au |
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| | Orbit Determination Parameters
Additional Information
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Orbital Elements at Epoch 2457423.5 (2016-Feb-05.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
Element | Value | Uncertainty (1-sigma) | Units |
e | .1631171392558421 | 4.4454e-08 | |
q | 1.917049163670127 | 1.0286e-07 | au |
tp | 2457038.477048878264 (2015-Jan-15.97704888) | 5.07e-05 | TDB |
node | 246.9565861004278 | 5.3333e-05 | deg |
peri | 150.6290199038167 | 5.5006e-05 | deg |
i | 4.894333123733931 | 4.3152e-06 | deg |
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| | Orbit Determination Parameters
Additional Information
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Orbit Covariance (6×6)
|
|
e |
q |
tp |
node |
peri |
i |
e |
1.976167896201449E-15 |
-4.55721696850224E-15 |
-7.809822236812575E-13 |
2.327129669264839E-14 |
-2.22954543670742E-13 |
-1.91550427839493E-15 |
q |
-4.55721696850224E-15 |
1.057950590295687E-14 |
1.984796092066172E-12 |
-5.238453564261691E-14 |
5.639776093439039E-13 |
4.35676869960875E-15 |
tp |
-7.809822236812575E-13 |
1.984796092066172E-12 |
2.570515811841494E-9 |
-3.649826223512254E-12 |
7.055620336050912E-10 |
1.875197575698861E-12 |
node |
2.327129669264839E-14 |
-5.238453564261691E-14 |
-3.649826223512254E-12 |
2.844405689653664E-9 |
-2.834620109548081E-9 |
-8.331349687043033E-11 |
peri |
-2.22954543670742E-13 |
5.639776093439039E-13 |
7.055620336050912E-10 |
-2.834620109548081E-9 |
3.025674960505956E-9 |
8.353359289250111E-11 |
i |
-1.91550427839493E-15 |
4.35676869960875E-15 |
1.875197575698861E-12 |
-8.331349687043033E-11 |
8.353359289250111E-11 |
1.862053182271553E-11 |
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Physical Parameter Table
Parameter |
Symbol |
Value |
Units |
Sigma |
Reference |
Notes |
absolute magnitude |
H |
15.94 |
|
n/a |
E2021B10 |
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|
90976 (1997 WH38) Discovered 1997-Nov-29 by LINEAR at Socorro |
Reference: 20041028/Numbers.arc | Last Updated: 2004-10-29 |
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