1866 Sisyphus (1972 XA) |
Classification: Apollo [NEO] SPK-ID: 2001866 |
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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 726 (heliocentric ecliptic J2000)
Element | Value | Uncertainty (1-sigma) | Units |
e | .5381940394329541 | 1.7884e-08 | |
a | 1.893569059200255 | 1.9835e-09 | au |
q | .8744614782840114 | 3.3851e-08 | au |
i | 41.20017098141518 | 7.9814e-07 | deg |
node | 63.48153786985074 | 2.1974e-06 | deg |
peri | 293.0668807455652 | 2.5e-06 | deg |
M | 179.8305711747528 | 4.1628e-06 | deg |
tp | 2458725.075922210590 (2019-Aug-29.57592221) | 1.0538e-05 | TDB |
period | 951.7440048492521 2.61 | 1.4955e-06 4.094e-09 | d yr |
n | .3782529736628295 | 5.9434e-10 | deg/d |
Q | 2.9126766401165 | 3.0511e-09 | au |
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| | Orbit Determination Parameters
Additional Information
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Physical Parameter Table
Parameter |
Symbol |
Value |
Units |
Sigma |
Reference |
Notes |
absolute magnitude |
H |
12.44 |
|
n/a |
E2021B10 |
|
diameter |
diameter |
8.48 |
km |
n/a |
Delbo et al. (2003). Icarus, v. 166, pp. 116-130 |
|
rotation period |
rot_per |
2.400 |
h |
n/a |
LCDB (Rev. 2020-October); Warner et al., 2009 |
Published Reference List: [Schober, H.J.; Erikson, A.; Hahn, G.; Lagerkvist, C.-I. (1993) Astron. Astrophys. Suppl. Ser. 101, 499-505.] [Pravec, P.; Wolf, M.; Sarounova, L. (1998) http://www.asu.cas.cz/~ppravec/neo.htm] [Stephens, R.D.; French, L.M.; Warner, B.D.; Wasserman, L. (2011) Minor Planet Bull. 38, 212-213.] [Behrend, R. (2015) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html] [Warner, B.D. (2016) Minor Planet Bull. 43, 306-309.] [Warner, B.D. (2016) Minor Planet Bull. 43, 311-319.] [Aznar, A.M.; Predatu, M.; Vaduvescu, O.; Oey, J. (2018) arXiv:1801.09420. Romanian J. Phys. 62, 904 (2017).] [Behrend, R. (2019) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html] |
geometric albedo |
albedo |
0.15 |
|
n/a |
Delbo et al. (2003). Icarus, v. 166, pp. 116-130 |
|
SMASSII spectral type |
spec_B |
S |
|
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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1866 Sisyphus (1972 XA) Discovered 1972-Dec-05 by Wild, P. at Zimmerwald |
Reference: DISCOVERY.DB | Last Updated: 2003-08-29 |
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