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JPL Small-Body Database Browser
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85145 (1981 ED33)
Classification: Main-belt Asteroid          SPK-ID: 2085145
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1300440109473216 5.0046e-08  
a 2.359470626680674 1.1863e-08 au
q 2.052635602674729 1.177e-07 au
i 6.273199511356842 5.0923e-06 deg
node 306.5340830238845 4.3311e-05 deg
peri 68.50097601276147 4.7252e-05 deg
M 341.1949523871698 1.7277e-05 deg
tp 2458669.650006641452
(2019-Jul-05.15000664)
6.355e-05 TDB
period 1323.793637934644
3.62
9.9839e-06
2.733e-08
d
yr
n .2719457094246688 2.051e-09 deg/d
Q 2.666305650686619 1.3406e-08 au
  Orbit Determination Parameters
   # obs. used (total)      905  
   data-arc span      14149 days (38.74 yr)  
   first obs. used      1981-02-02  
   last obs. used      2019-10-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5511  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 10:09:03  

Additional Information
 Earth MOID = 1.06193 au 
 Jupiter MOID = 2.83007 au 
 T_jup = 3.533 
[ 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 15.4   n/a MPO348038  

85145 (1981 ED33)          Discovered 1981-Mar-01 by Bus, S. J. at Siding Spring
Reference: 20040830/Numbers.arcLast Updated: 2004-09-06

[ show close-approach data ]
Alternate Designations
 1981 ED33 = 2001 TW40 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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