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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 | .1221670446433527 | 3.7665e-08 | |
| a | 3.109031226149604 | 1.5373e-08 | au |
| q | 2.729210069547007 | 1.1952e-07 | au |
| i | 12.68770662786512 | 4.162e-06 | deg |
| node | 347.6985843474168 | 1.8074e-05 | deg |
| peri | 2.292122862157017 | 2.4573e-05 | deg |
| M | 269.1173007634723 | 1.833e-05 | deg |
| tp | 2459505.992561619840
(2021-Oct-18.49256162) | 0.00010351 | TDB |
| period | 2002.331837763043
5.48 | 1.4851e-05
4.066e-08 | d
yr |
| n | .1797903790024052 | 1.3335e-09 | deg/d |
| Q | 3.4888523827522 | 1.7251e-08 | au |
|
| | Orbit Determination Parameters
Additional Information
|
[ show covariance matrix ]
Physical Parameter Table
| Parameter |
Symbol |
Value |
Units |
Sigma |
Reference |
Notes |
| absolute magnitude |
H |
10.76 |
|
n/a |
E2021B10 |
|
| diameter |
diameter |
45.056 |
km |
0.291 |
urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M) |
|
| rotation period |
rot_per |
9.276 |
h |
n/a |
LCDB (Rev. 2020-October); Warner et al., 2009 |
Published Reference List:
[Behrend, R. (2005) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html] |
| geometric albedo |
albedo |
0.064 |
|
0.007 |
urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M) |
|
|
| 1524 Joensuu (1939 SB) Discovered 1939-Sep-18 by Vaisala, Y. at Turku |
| Reference: DISCOVERY.DB | Last Updated: 2003-08-29 |
|
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Alternate Designations
| 1939 SB = 1931 EL = 1933 QO = 1936 DG = 1958 DH1 |
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