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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 32 (heliocentric ecliptic J2000)
| Element | Value | Uncertainty (1-sigma) | Units |
| e | .3836635993431726 | 3.7901e-08 | |
| a | 2.604523566565199 | 1.1559e-08 | au |
| q | 1.605262680442678 | 9.5362e-08 | au |
| i | 27.79664851689441 | 5.4786e-06 | deg |
| node | 219.3571245494254 | 8.9162e-06 | deg |
| peri | 110.2485381770713 | 1.2238e-05 | deg |
| M | 175.8119096173348 | 1.177e-05 | deg |
| tp | 2458250.715161285424
(2018-May-12.21516129) | 4.6499e-05 | TDB |
| period | 1535.291565427792
4.20 | 1.0221e-05
2.798e-08 | d
yr |
| n | .234483148417278 | 1.561e-09 | deg/d |
| Q | 3.603784452687721 | 1.5994e-08 | au |
|
| | Orbit Determination Parameters
Additional Information
|
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Orbital Elements at Epoch 2457040.5 (2015-Jan-18.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
| Element | Value | Uncertainty (1-sigma) | Units |
| e | .3855230680201955 | 3.813e-08 | |
| q | 1.599560014201427 | 9.6024e-08 | au |
| tp | 2456714.393465433277
(2014-Feb-25.89346543) | 3.9096e-05 | TDB |
| node | 219.5357745508367 | 8.9354e-06 | deg |
| peri | 109.9822648579612 | 1.2156e-05 | deg |
| i | 27.75535348958282 | 5.4785e-06 | deg |
|
| | Orbit Determination Parameters
Additional Information
|
Orbit Covariance (6×6)
|
| |
e |
q |
tp |
node |
peri |
i |
| e |
1.453906923558944E-15 |
-3.653825056746192E-15 |
6.518557707051282E-13 |
1.442410565667773E-15 |
1.138437315976277E-13 |
-2.006239207309221E-16 |
| q |
-3.653825056746192E-15 |
9.220535275766394E-15 |
-1.529748112405049E-12 |
-2.294143949267316E-15 |
-2.632380915997862E-13 |
8.382284090606871E-16 |
| tp |
6.518557707051282E-13 |
-1.529748112405049E-12 |
1.528507908773344E-9 |
3.400577111858747E-12 |
3.36004543813499E-10 |
1.304226800533771E-12 |
| node |
1.442410565667773E-15 |
-2.294143949267316E-15 |
3.400577111858747E-12 |
7.984078884618698E-11 |
-6.953813605111385E-11 |
5.731148946968862E-12 |
| peri |
1.138437315976277E-13 |
-2.632380915997862E-13 |
3.36004543813499E-10 |
-6.953813605111385E-11 |
1.47765924829775E-10 |
-5.146622057450117E-12 |
| i |
-2.006239207309221E-16 |
8.382284090606871E-16 |
1.304226800533771E-12 |
5.731148946968862E-12 |
-5.146622057450117E-12 |
3.001379639604904E-11 |
|
Physical Parameter Table
| Parameter |
Symbol |
Value |
Units |
Sigma |
Reference |
Notes |
| absolute magnitude |
H |
12.1 |
|
n/a |
MPO502196 |
|
| rotation period |
rot_per |
6.864 |
h |
n/a |
LCDB (Rev. 2019-August); 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.] |
| 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 |
|
|
