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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 31 (heliocentric ecliptic J2000)
Element | Value | Uncertainty (1-sigma) | Units |
e | .185624888379366 | 3.6415e-08 | |
a | 2.419883824007266 | 9.497e-09 | au |
q | 1.970693159284884 | 9.0289e-08 | au |
i | 3.358789532430289 | 4.379e-06 | deg |
node | 46.87302902543566 | 6.8861e-05 | deg |
peri | 291.0595971854804 | 6.9876e-05 | deg |
M | 51.55486972062316 | 1.2261e-05 | deg |
tp | 2458803.594705184297 (2019-Nov-16.09470518) | 4.6594e-05 | TDB |
period | 1374.960435702488 3.76 | 8.0942e-06 2.216e-08 | d yr |
n | .2618257156003698 | 1.5413e-09 | deg/d |
Q | 2.869074488729648 | 1.126e-08 | 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 |
14.3 |
|
n/a |
MPO344359 |
|
diameter |
diameter |
8.439 |
km |
0.149 |
urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M) |
|
geometric albedo |
albedo |
0.052 |
|
0.003 |
urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M) |
|
|
7150 McKellar | Discovered 1929 Oct. 11 by C. W. Tombaugh at the Lowell Observatory. |
In 1941, Andrew McKellar (1910-1960) measured the temperature of interstellar space as about 2.7 Kelvin, based of the rotational spectrum of the cyanogen molecule. This radiation temperature arises from the cosmic primeval fireball and is one of the most fundamental and revealing cosmic parameters. |
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) |
Reference: 20100330/MPCPages.arc | Last Updated: 2010-04-05 |
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