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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1360092206056312 3.3207e-08  
a 2.354462981427909 1.1261e-08 au
q 2.034234306379088 7.6203e-08 au
i 5.696400503752423 3.7499e-06 deg
node 233.9853482482275 3.478e-05 deg
peri 106.0051901123576 3.751e-05 deg
M 204.3682316947788 1.5895e-05 deg
tp 2459770.968906218850
(2022-Jul-10.46890622)
6.0708e-05 TDB
period 1319.581525514905
3.61
9.4669e-06
2.592e-08
d
yr
n .2728137618170478 1.9572e-09 deg/d
Q 2.67469165647673 1.2792e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1151  
   data-arc span      15724 days (43.05 yr)  
   first obs. used      1977-02-11  
   last obs. used      2020-03-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51486  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 02:32:02  

Additional Information
 Earth MOID = 1.033 au 
 Jupiter MOID = 2.70612 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 15.12   n/a E2021B10  

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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