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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 44 (heliocentric ecliptic J2000)
Element | Value | Uncertainty (1-sigma) | Units |
e | .1251294775352659 | 3.0732e-08 | |
a | 3.124016984314956 | 1.3646e-08 | au |
q | 2.733110371256328 | 9.6025e-08 | au |
i | .9053588957219719 | 3.5261e-06 | deg |
node | 40.47811921784109 | 0.00021359 | deg |
peri | 189.5530037793792 | 0.00021407 | deg |
M | 203.3925191746893 | 1.5872e-05 | deg |
tp | 2459877.861371188079 (2022-Oct-25.36137119) | 9.1669e-05 | TDB |
period | 2016.826348033953 5.52 | 1.3214e-05 3.618e-08 | d yr |
n | .178498263051222 | 1.1695e-09 | deg/d |
Q | 3.514923597373583 | 1.5353e-08 | au |
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| | Orbit Determination Parameters
Additional Information
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Orbital Elements at Epoch 2456558.5 (2013-Sep-23.0) TDB
Reference: JPL 44 (heliocentric ecliptic J2000)
Element | Value | Uncertainty (1-sigma) | Units |
e | .1274052185334647 | 3.0406e-08 | |
q | 2.723141930936358 | 9.5024e-08 | au |
tp | 2455852.035273095209 (2011-Oct-17.53527310) | 8.1228e-05 | TDB |
node | 40.4108061833979 | 0.00021336 | deg |
peri | 190.5160059708882 | 0.00021383 | deg |
i | .9073565015417224 | 3.525e-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 |
9.245421042621867E-16 |
-2.86691778096235E-15 |
-2.423449547113436E-13 |
7.337661479351532E-16 |
-3.392556653853627E-14 |
-2.733420205285211E-18 |
q |
-2.86691778096235E-15 |
9.029572494383826E-15 |
9.575042385809689E-13 |
-3.663806622868573E-15 |
1.483087771296525E-13 |
3.069854942029825E-17 |
tp |
-2.423449547113436E-13 |
9.575042385809689E-13 |
6.597997807787096E-9 |
-1.743620460634779E-12 |
1.163536091222114E-9 |
1.098683188580394E-13 |
node |
7.337661479351532E-16 |
-3.663806622868573E-15 |
-1.743620460634779E-12 |
4.552302027134993E-8 |
-4.551745687061425E-8 |
-6.637393173334698E-11 |
peri |
-3.392556653853627E-14 |
1.483087771296525E-13 |
1.163536091222114E-9 |
-4.551745687061425E-8 |
4.572295846433474E-8 |
6.638644902881325E-11 |
i |
-2.733420205285211E-18 |
3.069854942029825E-17 |
1.098683188580394E-13 |
-6.637393173334698E-11 |
6.638644902881325E-11 |
1.242570498452493E-11 |
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Physical Parameter Table
Parameter |
Symbol |
Value |
Units |
Sigma |
Reference |
Notes |
absolute magnitude |
H |
11.1 |
|
n/a |
MPO358646 |
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diameter |
diameter |
30.365 |
km |
0.351 |
urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M) |
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rotation period |
rot_per |
23.88 |
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: [Behrend, R. (2011) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html] [Durech, J.; Hanus, J. (2018) Astron. Astrophys. 620, A91.] [Fauerbach, M. (2019) Minor Planet Bull. 46, 15-19.] |
geometric albedo |
albedo |
0.092 |
|
0.013 |
urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M) |
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1939 Loretta (1974 UC) Discovered 1974-Oct-17 by Kowal, C. at Palomar |
Reference: DISCOVERY.DB | Last Updated: 2003-08-29 |
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Alternate Designations
1974 UC = 1934 JE = 1934 LQ = 1939 EH = 1939 GP = 1950 DT = 1950 ES = 1951 MF = 1955 CA = 1969 TE5 = 1975 TZ5 = 1975 XW |
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