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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
| Element | Value | Uncertainty (1-sigma) | Units |
| e | .1626022288682259 | 3.7264e-08 | |
| a | 3.162711039844495 | 1.7072e-08 | au |
| q | 2.648447175499636 | 1.1475e-07 | au |
| i | 2.14357862145457 | 3.9394e-06 | deg |
| node | 119.2482567675373 | 0.00011656 | deg |
| peri | 321.9562650594117 | 0.00011737 | deg |
| M | 205.4968604949642 | 1.4914e-05 | deg |
| tp | 2460082.203381978863
(2023-May-17.70338198) | 8.9535e-05 | TDB |
| period | 2054.412735749263
5.62 | 1.6634e-05
4.554e-08 | d
yr |
| n | .1752325585485162 | 1.4189e-09 | deg/d |
| Q | 3.676974904189354 | 1.9848e-08 | au |
|
| | Orbit Determination Parameters
Additional Information
|
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Physical Parameter Table
| Parameter |
Symbol |
Value |
Units |
Sigma |
Reference |
Notes |
| absolute magnitude |
H |
13.38 |
|
n/a |
E2021B10 |
|
| diameter |
diameter |
11.810 |
km |
0.211 |
urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M) |
|
| rotation period |
rot_per |
13.857 |
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:
[Erasmus, N.; Navarro-Meza, S.; McNeill, A.; Trilling, D.E.; et al. (2020) Ap. J. Suppl. Ser. 247, A13.] |
| geometric albedo |
albedo |
0.055 |
|
0.005 |
urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M) |
|
|
| 11521 Erikson | Discovered 1991 Apr. 10 by E. W. Elst at the European Southern Observatory. |
| Erik H. Erikson (1902-1994) was a German-American psychoanalyst who made important contributions to the field of psychosocial development. Through his friendship with Anna Freud, he became interested in child psychoanalysis. His views on personality development were published in Childhood and Society (1950). |
| NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character) |
| Reference: 20000523/MPCPages.arc | Last Updated: 2013-03-29 |
|
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Alternate Designations
| 1991 GE9 = 1988 RS1 = 1991 FD3 |
|
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