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JPL Small-Body Database Browser
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15686 (1981 EW33)
Classification: Main-belt Asteroid          SPK-ID: 2015686
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1145047297182454 4.8445e-08  
a 2.698893817481749 1.4243e-08 au
q 2.389857710372758 1.3485e-07 au
i 2.699979504880377 3.9984e-06 deg
node 251.9560221771409 0.00010443 deg
peri 106.0569817914859 0.00010565 deg
M 34.74796307202027 1.6501e-05 deg
tp 2458444.183804984931
(2018-Nov-21.68380498)
7.4059e-05 TDB
period 1619.485726078071
4.43
1.282e-05
3.51e-08
d
yr
n .2222927897437025 1.7597e-09 deg/d
Q 3.00792992459074 1.5874e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1044  
   data-arc span      15204 days (41.63 yr)  
   first obs. used      1977-04-24  
   last obs. used      2018-12-09  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54445  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-12 19:33:31  

Additional Information
 Earth MOID = 1.38679 au 
 Jupiter MOID = 2.43034 au 
 T_jup = 3.357 
[ 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 14.9   n/a MPO332965  

15686 (1981 EW33)          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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