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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 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1302826821829159 4.5669e-08  
a 2.359949319184432 1.122e-08 au
q 2.052488792065338 1.0577e-07 au
i 6.273480949056815 4.4744e-06 deg
node 306.5294054259327 3.936e-05 deg
peri 68.51960303658653 4.3517e-05 deg
M 89.92855697804417 1.6129e-05 deg
tp 2458669.713661093438
(2019-Jul-05.21366109)
5.9484e-05 TDB
period 1324.196517858462
3.63
9.4435e-06
2.585e-08
d
yr
n .2718629713527754 1.9388e-09 deg/d
Q 2.667409846303526 1.2682e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1014  
   data-arc span      14307 days (39.17 yr)  
   first obs. used      1981-02-02  
   last obs. used      2020-04-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52629  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 21:01:57  

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

[ 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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