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15685 (1981 EU33)
Classification: Main-belt Asteroid          SPK-ID: 2015685
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1361574752731962 3.0355e-08  
a 2.354082720709606 9.7855e-09 au
q 2.033556760873529 7.1281e-08 au
i 5.696965275018358 3.6746e-06 deg
node 233.9812174544593 3.2377e-05 deg
peri 106.0543315629607 3.5191e-05 deg
M 257.8043676591754 1.6043e-05 deg
tp 2459771.007777008410
(2022-Jul-10.50777701)
6.0298e-05 TDB
period 1319.261857232713
3.61
8.2259e-06
2.252e-08
d
yr
n .2728798668940046 1.7015e-09 deg/d
Q 2.674608680545683 1.1118e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1308  
   data-arc span      16193 days (44.33 yr)  
   first obs. used      1977-02-11  
   last obs. used      2021-06-13  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50808  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 17:30:09  

Additional Information
 Earth MOID = 1.03336 au 
 Jupiter MOID = 2.70578 au 
 T_jup = 3.536 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.13   n/a MPCxxxxx  

15685 (1981 EU33)          Discovered 1981-Mar-01 by Bus, S. J. at Siding Spring
Reference: 20000726/Numbers.arcLast Updated: 2004-04-19
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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