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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 47 (heliocentric ecliptic J2000)
Element | Value | Uncertainty (1-sigma) | Units |
e | .07406998342601762 | 3.9223e-08 | |
a | 3.373861222947598 | 1.4104e-08 | au |
q | 3.123959378082186 | 1.3697e-07 | au |
i | 4.669317649093768 | 4.3615e-06 | deg |
node | 205.9600225530754 | 4.8255e-05 | deg |
peri | 175.3661151248143 | 5.5226e-05 | deg |
M | 32.68466086501201 | 2.621e-05 | deg |
tp | 2458794.991054235926 (2019-Nov-07.49105424) | 0.00016479 | TDB |
period | 2263.545605708376 6.20 | 1.4194e-05 3.886e-08 | d yr |
n | .1590425212074922 | 9.9731e-10 | deg/d |
Q | 3.623763067813011 | 1.5149e-08 | au |
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| | Orbit Determination Parameters
Additional Information
|
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Orbital Elements at Epoch 2455921.5 (2011-Dec-26.0) TDB
Reference: JPL 47 (heliocentric ecliptic J2000)
Element | Value | Uncertainty (1-sigma) | Units |
e | .06879848672564895 | 3.7863e-08 | |
q | 3.143050379039622 | 1.3072e-07 | au |
tp | 2456490.351499725553 (2013-Jul-16.85149973) | 0.00018511 | TDB |
node | 206.4290689842244 | 4.8769e-05 | deg |
peri | 169.0210901051251 | 5.7125e-05 | deg |
i | 4.636308381133675 | 4.3436e-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 |
1.433612039084997E-15 |
-4.926372018642254E-15 |
3.605292415267039E-13 |
4.141761296572906E-15 |
5.755749342562224E-14 |
7.394870062693759E-17 |
q |
-4.926372018642254E-15 |
1.70871020795348E-14 |
-1.171174071758176E-12 |
-5.228400523511323E-15 |
-2.042636016863594E-13 |
8.424663617323468E-16 |
tp |
3.605292415267039E-13 |
-1.171174071758176E-12 |
3.426651301759338E-8 |
2.892523448717698E-12 |
5.522974847116873E-9 |
3.199666043767473E-12 |
node |
4.141761296572906E-15 |
-5.228400523511323E-15 |
2.892523448717698E-12 |
2.378440240044619E-9 |
-2.370673809241774E-9 |
1.541174480764419E-12 |
peri |
5.755749342562224E-14 |
-2.042636016863594E-13 |
5.522974847116873E-9 |
-2.370673809241774E-9 |
3.263285851848175E-9 |
-1.166807762694351E-12 |
i |
7.394870062693759E-17 |
8.424663617323468E-16 |
3.199666043767473E-12 |
1.541174480764419E-12 |
-1.166807762694351E-12 |
1.886717362153236E-11 |
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Physical Parameter Table
Parameter |
Symbol |
Value |
Units |
Sigma |
Reference |
Notes |
absolute magnitude |
H |
8.1 |
|
n/a |
MPO502154 |
IRAS observations used: 6 |
diameter |
diameter |
145.366 |
km |
3.219 |
urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M) |
|
rotation period |
rot_per |
47.009 |
h |
n/a |
LCDB (Rev. 2020-October); Warner et al., 2009 |
Published Reference List: [Pilcher, F.; Benishek, V.; Brinsfield, J.W. (2008) Minor Planet Bull. 35, 104-105.] |
geometric albedo |
albedo |
0.056 |
|
0.012 |
urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M) |
|
B-V |
BV |
0.745 |
|
0.013 |
EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 |
#obs=5; phase (min.=1.40, mean=7.89, max.=17.63) deg. |
U-B |
UB |
0.384 |
|
0.027 |
EAR-A-5-DDR-UBV-MEAN-VALUES-V1.2 |
#obs=5; phase (min.=1.68, mean=11.14, max.=17.66) deg. |
Tholen spectral type |
spec_T |
C |
|
n/a |
EAR-A-5-DDR-TAXONOMY-V4.0 |
used 7 color indices; used ground-based radiometric albedo |
SMASSII spectral type |
spec_B |
Ch |
|
n/a |
EAR-A-5-DDR-TAXONOMY-V4.0 |
based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002) |
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168 Sibylla (A876 SA) Discovered 1876-Sep-28 by Watson, J. C. at Ann Arbor |
Reference: DISCOVERY.DB | Last Updated: 2003-08-29 |
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Alternate Designations
A876 SA = 1949 MO = A911 HF |
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