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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 28 (heliocentric ecliptic J2000)
Element | Value | Uncertainty (1-sigma) | Units |
e | .09812522305613765 | 4.7048e-08 | |
a | 2.280238426844659 | 6.4449e-09 | au |
q | 2.05648952258935 | 1.0616e-07 | au |
i | 3.560614809038066 | 2.7974e-06 | deg |
node | 84.38633031807585 | 7.7071e-05 | deg |
peri | 98.90005697611373 | 7.8178e-05 | deg |
M | 192.3227639389176 | 1.4491e-05 | deg |
tp | 2459786.287935452546 (2022-Jul-25.78793545) | 5.1284e-05 | TDB |
period | 1257.676126567917 3.44 | 5.3321e-06 1.46e-08 | d yr |
n | .2862422148239443 | 1.2136e-09 | deg/d |
Q | 2.503987331099967 | 7.0774e-09 | au |
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| | Orbit Determination Parameters
Additional Information
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[ hide covariance matrix ]
Orbital Elements at Epoch 2457517.5 (2016-May-09.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
Element | Value | Uncertainty (1-sigma) | Units |
e | .09730528877040258 | 4.7083e-08 | |
q | 2.058721989841808 | 1.0616e-07 | au |
tp | 2457269.315414801248 (2015-Sep-03.81541480) | 4.9743e-05 | TDB |
node | 84.40424201542854 | 7.7031e-05 | deg |
peri | 98.71170707224766 | 7.8162e-05 | deg |
i | 3.561342702621575 | 2.7989e-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 |
2.216768830359486E-15 |
-4.990990877657314E-15 |
3.174582849119666E-13 |
-4.181097942319653E-14 |
1.199409487873255E-13 |
1.00520562609348E-15 |
q |
-4.990990877657314E-15 |
1.126931167364923E-14 |
-6.988007997588294E-13 |
9.470311204610542E-14 |
-2.654631311228919E-13 |
-2.237094371615147E-15 |
tp |
3.174582849119666E-13 |
-6.988007997588294E-13 |
2.474369536544917E-9 |
-2.885185476061594E-12 |
6.917390606024285E-10 |
-2.761400721944086E-13 |
node |
-4.181097942319653E-14 |
9.470311204610542E-14 |
-2.885185476061594E-12 |
5.933785441106922E-9 |
-5.922747095410233E-9 |
-5.905320643729642E-11 |
peri |
1.199409487873255E-13 |
-2.654631311228919E-13 |
6.917390606024285E-10 |
-5.922747095410233E-9 |
6.1093317629556E-9 |
5.885619222561265E-11 |
i |
1.00520562609348E-15 |
-2.237094371615147E-15 |
-2.761400721944086E-13 |
-5.905320643729642E-11 |
5.885619222561265E-11 |
7.833611150147971E-12 |
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Physical Parameter Table
Parameter |
Symbol |
Value |
Units |
Sigma |
Reference |
Notes |
absolute magnitude |
H |
15.01 |
|
n/a |
E2021B10 |
|
diameter |
diameter |
2.814 |
km |
0.838 |
urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M) |
|
rotation period |
rot_per |
10.644 |
h |
n/a |
LCDB (Rev. 2020-October); Warner et al., 2009 |
Result based on less than full coverage, so that the period may be wrong by 30 percent or so. Published Reference List: [Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.] |
geometric albedo |
albedo |
0.169 |
|
0.117 |
urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M) |
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|
18599 (1998 BK8) Discovered 1998-Jan-25 by Kobayashi, T. at Oizumi |
Reference: 20001111/Numbers.arc | Last Updated: 2004-04-19 |
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