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JPL Small-Body Database Browser
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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 | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1358509829080397 3.3228e-08  
a 2.354774300340494 1.1254e-08 au
q 2.034875897112647 7.6293e-08 au
i 5.696228783973438 3.7604e-06 deg
node 233.9938960224582 3.4817e-05 deg
peri 105.9706182140885 3.7558e-05 deg
M 149.8460536954971 1.5694e-05 deg
tp 2458451.129712461584
(2018-Nov-28.62971246)		 5.544e-05 TDB
period 1319.843256704817
3.61		 9.462e-06
2.591e-08		 d
yr
n .2727596615516247 1.9554e-09 deg/d
Q 2.674672703568342 1.2783e-08 au
   Orbit Determination Parameters
   # obs. used (total)      1134  
   data-arc span      15696 days (42.97 yr)  
   first obs. used      1977-02-11  
   last obs. used      2020-02-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51821  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 21:25:13  

Additional Information
 Earth MOID = 1.03545 au 
 Jupiter MOID = 2.70622 au 
 T_jup = 3.536 
[ 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 15.1   n/a MPO449065  

15685 (1981 EU33)          Discovered 1981-Mar-01 by Bus, S. J. at Siding Spring
Reference: 20000726/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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