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85146 (1981 EF33)
Classification: Main-belt Asteroid          SPK-ID: 2085146
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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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 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1759358638040191 6.0482e-08  
a 2.42487910296224 1.1707e-08 au
q 1.998255903362264 1.4523e-07 au
i 6.786617397737317 7.086e-06 deg
node 209.74891103542 3.6254e-05 deg
peri 22.72867569866667 4.1136e-05 deg
M 96.75533917909424 1.5474e-05 deg
tp 2458629.814155212532
(2019-May-26.31415521)
5.9657e-05 TDB
period 1379.220053959795
3.78
9.9882e-06
2.735e-08
d
yr
n .261017086407949 1.8903e-09 deg/d
Q 2.851502302562217 1.3767e-08 au
  Orbit Determination Parameters
   # obs. used (total)      346  
   data-arc span      14055 days (38.48 yr)  
   first obs. used      1981-02-02  
   last obs. used      2019-07-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59753  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 15:33:46  

Additional Information
 Earth MOID = .989783 au 
 Jupiter MOID = 2.14176 au 
 T_jup = 3.480 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.7   n/a MPO474738  

85146 (1981 EF33)          Discovered 1981-Mar-01 by Bus, S. J. at Siding Spring
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06

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Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1927-Nov-30 01:00 < 00:01 Juno 0.0461220795740137 0.0461065789839171 0.0461375892924609 8.9058601397861 8.90586011016772 2425214.541915702 0.916604484497492 1287.03954984154 83.4511877161312 -53.2453354154397 66307.0615132509 T 14 CATAB v2.0f-lin.ifort 2020-May-20 15:33:48 2020-May-20 15:34
1984-Aug-20 10:48 < 00:01 Juno 0.0218901942375801 0.0218879800711944 0.0218924090739805 8.77592410769237 8.77592404436324 2445932.949908880 0.305333736640993 312.240574499622 83.5470543487678 -76.1187154847288 38125.4658558692 T 14 CATAB v2.0f-lin.ifort 2020-May-20 15:33:48 2020-May-20 15:34
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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