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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1302826835083898 4.5715e-08  
a 2.359949318987971 1.1227e-08 au
q 2.052488788766421 1.059e-07 au
i 6.273481066213598 4.4783e-06 deg
node 306.5294062866877 3.9433e-05 deg
peri 68.51960212348133 4.3584e-05 deg
M 89.92855714641802 1.6132e-05 deg
tp 2458669.713660515410
(2019-Jul-05.21366052)
5.9494e-05 TDB
period 1324.196517693108
3.63
9.4492e-06
2.587e-08
d
yr
n .2718629713867233 1.94e-09 deg/d
Q 2.667409849209522 1.2689e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1010  
   data-arc span      14243 days (39.00 yr)  
   first obs. used      1981-02-02  
   last obs. used      2020-02-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52666  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 20:27:07  

Additional Information
 Earth MOID = 1.06261 au 
 Jupiter MOID = 2.83267 au 
 T_jup = 3.532 
[ 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

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