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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 38 (heliocentric ecliptic J2000)
| Element | Value | Uncertainty (1-sigma) | Units |
| e | .3838129853909738 | 1.9215e-08 | |
| a | 2.604196373895035 | 1.031e-08 | au |
| q | 1.604671989086033 | 4.7391e-08 | au |
| i | 27.79965726744479 | 3.1453e-07 | deg |
| node | 219.3452911641295 | 1.8358e-06 | deg |
| peri | 110.2727314956401 | 2.9601e-06 | deg |
| M | 222.6899045882028 | 7.8779e-06 | deg |
| tp | 2459785.975855419230
(2022-Jul-25.47585542) | 3.65e-05 | TDB |
| period | 1535.002268542697
4.20 | 9.1158e-06
2.496e-08 | d
yr |
| n | .2345273406936249 | 1.3928e-09 | deg/d |
| Q | 3.603720758704037 | 1.4267e-08 | au |
|
| | Orbit Determination Parameters
Additional Information
|
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Orbital Elements at Epoch 2457197.5 (2015-Jun-24.0) TDB
Reference: JPL 38 (heliocentric ecliptic J2000)
| Element | Value | Uncertainty (1-sigma) | Units |
| e | .3853738133374804 | 1.9381e-08 | |
| q | 1.600138707996785 | 4.79e-08 | au |
| tp | 2456714.349515360478
(2014-Feb-25.84951536) | 2.3104e-05 | TDB |
| node | 219.522908441283 | 1.8434e-06 | deg |
| peri | 110.0107482931529 | 2.9506e-06 | deg |
| i | 27.75263307491044 | 3.1538e-07 | deg |
|
| | Orbit Determination Parameters
Additional Information
|
Orbit Covariance (6×6)
|
| |
e |
q |
tp |
node |
peri |
i |
| e |
3.756087746855991E-16 |
-9.22085409785359E-16 |
3.683502961194996E-13 |
8.171416583209311E-15 |
3.278441084166344E-14 |
2.479502208093715E-16 |
| q |
-9.22085409785359E-16 |
2.294413952950786E-15 |
-8.796738804150313E-13 |
-1.918498690791469E-14 |
-7.591749754407514E-14 |
-7.135016660234936E-16 |
| tp |
3.683502961194996E-13 |
-8.796738804150313E-13 |
5.337891439038719E-10 |
1.088643491748202E-11 |
5.379644038706444E-11 |
-8.419719817949673E-13 |
| node |
8.171416583209311E-15 |
-1.918498690791469E-14 |
1.088643491748202E-11 |
3.398025637767793E-12 |
-1.897644452674235E-12 |
-1.545863886120273E-13 |
| peri |
3.278441084166344E-14 |
-7.591749754407514E-14 |
5.379644038706444E-11 |
-1.897644452674235E-12 |
8.706021022855451E-12 |
-5.440526858510624E-14 |
| i |
2.479502208093715E-16 |
-7.135016660234936E-16 |
-8.419719817949673E-13 |
-1.545863886120273E-13 |
-5.440526858510624E-14 |
9.946493758646338E-14 |
|
Physical Parameter Table
| Parameter |
Symbol |
Value |
Units |
Sigma |
Reference |
Notes |
| absolute magnitude |
H |
12.11 |
|
n/a |
E2021B10 |
|
| rotation period |
rot_per |
6.864 |
h |
n/a |
LCDB (Rev. 2020-October); Warner et al., 2009 |
Published Reference List:
[Sheridan, E.E. (2002) Minor Planet Bull. 29, 32-33.]
[Stephens, R.D. (2002) Minor Planet Bull. 29, 34.]
[Behrend, R. (2009) Observatoire de Geneve web site, http://obswww.unige.ch/~behrend/page_cou.html]
[Durech, J.; Hanus, J. (2018) Astron. Astrophys. 620, A91.]
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.] |
| SMASSII spectral type |
spec_B |
S |
|
n/a |
Binzel et al. (2004) Icarus 170, 259-294 |
|
|
| 4451 Grieve (1988 JJ) Discovered 1988-May-09 by Shoemaker, C. S. at Palomar |
| Reference: DISCOVERY.DB | Last Updated: 2003-08-29 |
|
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Alternate Designations
| 1988 JJ = 1971 GF = 1980 VE1 |
|
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