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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 37 (heliocentric ecliptic J2000)
| Element | Value | Uncertainty (1-sigma) | Units |
| e | .04870217624427505 | 3.1434e-08 | |
| a | 3.145578697434633 | 1.3846e-08 | au |
| q | 2.992382169321934 | 1.0598e-07 | au |
| i | 16.12287895661052 | 2.9023e-06 | deg |
| node | 317.097581144996 | 1.4672e-05 | deg |
| peri | 138.1826503451068 | 5.0189e-05 | deg |
| M | 277.5631736220257 | 4.6662e-05 | deg |
| tp | 2459467.125021300322
(2021-Sep-09.62502130) | 0.00026393 | TDB |
| period | 2037.742293691675
5.58 | 1.3455e-05
3.684e-08 | d
yr |
| n | .1766661079344857 | 1.1665e-09 | deg/d |
| Q | 3.298775225547331 | 1.4521e-08 | au |
|
| | Orbit Determination Parameters
Additional Information
|
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Orbital Elements at Epoch 2457904.5 (2017-May-31.0) TDB
Reference: JPL 37 (heliocentric ecliptic J2000)
| Element | Value | Uncertainty (1-sigma) | Units |
| e | .04617648114009815 | 3.1235e-08 | |
| q | 3.00464667250599 | 1.0463e-07 | au |
| tp | 2457421.905548474312
(2016-Feb-03.40554847) | 0.0002837 | TDB |
| node | 317.326195323756 | 1.4664e-05 | deg |
| peri | 137.1542298767448 | 5.3206e-05 | deg |
| i | 16.11355293330838 | 2.9072e-06 | deg |
|
| | Orbit Determination Parameters
Additional Information
|
Orbit Covariance (6×6)
|
| |
e |
q |
tp |
node |
peri |
i |
| e |
9.756168517866599E-16 |
-3.247863227074403E-15 |
-2.141243080139293E-13 |
-1.515457686745002E-15 |
5.653233914616616E-15 |
-3.100448195362245E-15 |
| q |
-3.247863227074403E-15 |
1.094745309586929E-14 |
2.062162716200045E-13 |
9.875423109100107E-15 |
-1.079363814232133E-13 |
1.068429430770631E-14 |
| tp |
-2.141243080139293E-13 |
2.062162716200045E-13 |
8.048757120722669E-8 |
3.985505274084927E-11 |
1.453857235674273E-8 |
4.945892219502429E-11 |
| node |
-1.515457686745002E-15 |
9.875423109100107E-15 |
3.985505274084927E-11 |
2.150293249454035E-10 |
-1.990205607799569E-10 |
1.75114661424291E-11 |
| peri |
5.653233914616616E-15 |
-1.079363814232133E-13 |
1.453857235674273E-8 |
-1.990205607799569E-10 |
2.830861404418811E-9 |
-8.006089238318621E-12 |
| i |
-3.100448195362245E-15 |
1.068429430770631E-14 |
4.945892219502429E-11 |
1.75114661424291E-11 |
-8.006089238318621E-12 |
8.451741956810053E-12 |
|
Physical Parameter Table
| Parameter |
Symbol |
Value |
Units |
Sigma |
Reference |
Notes |
| absolute magnitude |
H |
10.9 |
|
n/a |
MPO502170 |
|
| diameter |
diameter |
43.576 |
km |
0.166 |
urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M) |
|
| geometric albedo |
albedo |
0.045 |
|
0.005 |
urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M) |
|
|
| 1721 Wells (1953 TD3) Discovered 1953-Oct-03 by Goethe Link Observatory at Brooklyn |
| Discovered by the Indiana Asteroid Program, Goethe Link Observatory, University of Indiana. This program was conceived and directed by F. K. Edmondson; the plates were blinked and measured astrometrically by B. Potter and, following her retirement, by D. Owings; and the photometry was performed under the direction of T. Gehrels. During the years 1947-1967, in which the plates were exposed, a large number of people participated in various aspects of the program. |
| Reference: DISCOVERY.DB | Last Updated: 2003-08-29 |
|
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Alternate Designations
| 1953 TD3 = 1944 DA = 1958 QE = A905 CG |
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