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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.
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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 41 (heliocentric ecliptic J2000)
| Element | Value | Uncertainty (1-sigma) | Units |
| e | .1251294787821887 | 3.1255e-08 | |
| a | 3.124016984254482 | 1.389e-08 | au |
| q | 2.733110367308014 | 9.729e-08 | au |
| i | .9053589541220893 | 3.6047e-06 | deg |
| node | 40.4781159370014 | 0.00021761 | deg |
| peri | 189.5530058594905 | 0.00021809 | deg |
| M | 203.3925204063853 | 1.5932e-05 | deg |
| tp | 2459877.861364262280
(2022-Oct-25.36136426) | 9.1962e-05 | TDB |
| period | 2016.826347975392
5.52 | 1.3451e-05
3.683e-08 | d
yr |
| n | .178498263056405 | 1.1905e-09 | deg/d |
| Q | 3.514923601200951 | 1.5628e-08 | au |
|
| | Orbit Determination Parameters
Additional Information
|
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Orbital Elements at Epoch 2456438.5 (2013-May-26.0) TDB
Reference: JPL 41 (heliocentric ecliptic J2000)
| Element | Value | Uncertainty (1-sigma) | Units |
| e | .1273871320369228 | 3.0908e-08 | |
| q | 2.72344084288753 | 9.6236e-08 | au |
| tp | 2455852.216924477253
(2011-Oct-17.71692448) | 8.1869e-05 | TDB |
| node | 40.41096428445015 | 0.00021735 | deg |
| peri | 190.5592213746441 | 0.00021782 | deg |
| i | .9073531220056905 | 3.6038e-06 | deg |
|
| | Orbit Determination Parameters
Additional Information
|
Orbit Covariance (6×6)
|
| |
e |
q |
tp |
node |
peri |
i |
| e |
9.553210921667811E-16 |
-2.951218944853423E-15 |
-2.90981050616368E-13 |
5.04868347274071E-16 |
-4.39241066223566E-14 |
7.302444435801794E-19 |
| q |
-2.951218944853423E-15 |
9.261390045177716E-15 |
1.092108439627305E-12 |
-3.184764583153322E-15 |
1.759568120895301E-13 |
2.132815763642167E-17 |
| tp |
-2.90981050616368E-13 |
1.092108439627305E-12 |
6.702584233715734E-9 |
-2.392920305788225E-12 |
1.184649537202302E-9 |
1.232958833983691E-13 |
| node |
5.04868347274071E-16 |
-3.184764583153322E-15 |
-2.392920305788225E-12 |
4.724025732204908E-8 |
-4.723459657602398E-8 |
-9.701684486464602E-11 |
| peri |
-4.39241066223566E-14 |
1.759568120895301E-13 |
1.184649537202302E-9 |
-4.723459657602398E-8 |
4.744405045234776E-8 |
9.70278399155276E-11 |
| i |
7.302444435801794E-19 |
2.132815763642167E-17 |
1.232958833983691E-13 |
-9.701684486464602E-11 |
9.70278399155276E-11 |
1.298747663842388E-11 |
|
Physical Parameter Table
| Parameter |
Symbol |
Value |
Units |
Sigma |
Reference |
Notes |
| absolute magnitude |
H |
11.1 |
|
n/a |
MPO358646 |
|
| diameter |
diameter |
30.365 |
km |
0.351 |
urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M) |
|
| rotation period |
rot_per |
23.88 |
h |
n/a |
LCDB (Rev. 2019-August); 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) |
|
|
| 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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