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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 58 (heliocentric ecliptic J2000)
| Element | Value | Uncertainty (1-sigma) | Units |
| e | .2317969425647172 | 4.5021e-08 | |
| a | 2.228082491402371 | 6.311e-09 | au |
| q | 1.711619782113324 | 1.0086e-07 | au |
| i | 5.712518099501626 | 3.3029e-06 | deg |
| node | 275.1241980879041 | 4.7889e-05 | deg |
| peri | 91.17357952471296 | 4.8273e-05 | deg |
| M | 36.63379320543402 | 6.9516e-06 | deg |
| tp | 2458876.883992024680
(2020-Jan-28.38399202) | 2.3272e-05 | TDB |
| period | 1214.773545877694
3.33 | 5.1613e-06
1.413e-08 | d
yr |
| n | .296351530885449 | 1.2591e-09 | deg/d |
| Q | 2.744545200691418 | 7.7739e-09 | au |
|
| | Orbit Determination Parameters
Additional Information
|
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Orbital Elements at Epoch 2456336.5 (2013-Feb-13.0) TDB
Reference: JPL 58 (heliocentric ecliptic J2000)
| Element | Value | Uncertainty (1-sigma) | Units |
| e | .2318542628125395 | 4.5059e-08 | |
| q | 1.711491021326896 | 1.0095e-07 | au |
| tp | 2456447.554361401186
(2013-Jun-04.05436140) | 2.1972e-05 | TDB |
| node | 275.2059342985089 | 4.7903e-05 | deg |
| peri | 91.15545388530705 | 4.8284e-05 | deg |
| i | 5.711470014981537 | 3.3025e-06 | deg |
|
| | Orbit Determination Parameters
Additional Information
|
Orbit Covariance (6×6)
|
| |
e |
q |
tp |
node |
peri |
i |
| e |
2.030281221347774E-15 |
-4.543517849413082E-15 |
-1.015176801294943E-14 |
2.246286303182258E-14 |
-2.880074451584757E-14 |
-6.439300509684874E-15 |
| q |
-4.543517849413082E-15 |
1.019138145527526E-14 |
1.032582149827249E-14 |
-4.996759249699843E-14 |
5.952448046077074E-14 |
1.446098184419924E-14 |
| tp |
-1.015176801294943E-14 |
1.032582149827249E-14 |
4.827638815213084E-10 |
4.560873427480222E-12 |
1.571970237659273E-10 |
8.186074210813295E-14 |
| node |
2.246286303182258E-14 |
-4.996759249699843E-14 |
4.560873427480222E-12 |
2.294692007878834E-9 |
-2.281915386173933E-9 |
2.544072336518861E-12 |
| peri |
-2.880074451584757E-14 |
5.952448046077074E-14 |
1.571970237659273E-10 |
-2.281915386173933E-9 |
2.331332873607832E-9 |
-2.477013384461118E-12 |
| i |
-6.439300509684874E-15 |
1.446098184419924E-14 |
8.186074210813295E-14 |
2.544072336518861E-12 |
-2.477013384461118E-12 |
1.090627443806619E-11 |
|
Physical Parameter Table
| Parameter |
Symbol |
Value |
Units |
Sigma |
Reference |
Notes |
| absolute magnitude |
H |
13.6 |
|
n/a |
MPO279543 |
|
| rotation period |
rot_per |
2.44967 |
h |
n/a |
LCDB (Rev. 2019-August); Warner et al., 2009 |
Published Reference List:
[Pray, D.; Pravec, P.; Pikler, M.; Husarik, M.; et al. (2006) CBET 617.]
[Pravec, P.; Scheirich, P.; Vokrouhlicky, D.; Harris, A.W.; et al. (2012) Icarus 218, 125-143. See also supplemental on-line material.] |
| SMASSII spectral type |
spec_B |
Sa |
|
n/a |
EAR-A-5-DDR-TAXONOMY-V4.0 |
based on a high-resolution spectrum by Xu et al. (1995) or Bus and Binzel (2002) |
|
| 2754 Efimov (1966 PD) Discovered 1966-Aug-13 by Smirnova, T. at Nauchnyj |
| Reference: DISCOVERY.DB | Last Updated: 2003-08-29 |
|
[ show close-approach data ]
Alternate Designations
| 1966 PD = 1933 WF = 1966 RB = 1973 YR1 |
|
|
