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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 41 (heliocentric ecliptic J2000)
Element | Value | Uncertainty (1-sigma) | Units |
e | .2466159524146008 | 1.8216e-08 | |
a | 2.273025585694858 | 6.4662e-09 | au |
q | 1.712461216015965 | 4.189e-08 | au |
i | 2.408680094027174 | 6.6869e-07 | deg |
node | 114.1052890018527 | 2.5745e-05 | deg |
peri | 235.1081339208747 | 2.6378e-05 | deg |
M | 294.7834504607812 | 3.5186e-06 | deg |
tp | 2459427.256753248610 (2021-Jul-31.75675325) | 1.3118e-05 | TDB |
period | 1251.713433879369 3.43 | 5.3412e-06 1.462e-08 | d yr |
n | .2876057652303619 | 1.2273e-09 | deg/d |
Q | 2.833589955373752 | 8.0609e-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 |
13.47 |
|
n/a |
E2021B10 |
|
diameter |
diameter |
5.324 |
km |
0.086 |
urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M) |
|
rotation period |
rot_per |
5.054 |
h |
n/a |
LCDB (Rev. 2020-October); Warner et al., 2009 |
Published Reference List: [Pravec, P.; Wolf, M.; Sarounova, L. (2014) http://www.asu.cas.cz/~ppravec/neo.htm] [Clark, M. (2015) Minor Planet Bull. 42, 15-20.] [Klinglesmith, D.A.; Dehart, A.; Hanowell, J.; Henderickx, S. (2015) Minor Planet Bull. 42, 101-104.] |
geometric albedo |
albedo |
0.278 |
|
0.014 |
urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M) |
|
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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4909 Couteau (1949 SA1) Discovered 1949-Sep-28 by Laugier, M. at Nice |
Reference: DISCOVERY.DB | Last Updated: 2003-08-29 |
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Alternate Designations
1949 SA1 = 1949 SD = 1949 TJ = 1949 UG1 = 1959 NK = 1966 QO = 1973 SW3 = 1990 RA |
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