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JPL Small-Body Database Browser
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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1757884327564633 6.26e-08  
a 2.425512856330406 1.2753e-08 au
q 1.999135752685431 1.5117e-07 au
i 6.78736860685934 8.1771e-06 deg
node 209.7790899835389 4.3497e-05 deg
peri 22.89165936637002 4.8123e-05 deg
M 352.2247802125568 1.8111e-05 deg
tp 2458630.299842715715
(2019-May-26.79984272)
6.9416e-05 TDB
period 1379.760787596358
3.78
1.0882e-05
2.979e-08
d
yr
n .2609147927932824 2.0579e-09 deg/d
Q 2.851889959975381 1.4995e-08 au
  Orbit Determination Parameters
   # obs. used (total)      284  
   data-arc span      13977 days (38.27 yr)  
   first obs. used      1981-02-02  
   last obs. used      2019-05-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .61719  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 05:55:11  

Additional Information
 Earth MOID = .990654 au 
 Jupiter MOID = 2.14219 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 16.6   n/a MPO432395  

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

[ hide close-approach data ]
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 12 CATAB v2.0e-lin.ifort 2019-May-30 05:55:14 2019-May-30 05:55
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 12 CATAB v2.0e-lin.ifort 2019-May-30 05:55:14 2019-May-30 05:55
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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