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15681 (1981 ES17)
Classification: Main-belt Asteroid          SPK-ID: 2015681
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 37 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09734757833451099 3.0945e-08  
a 2.735761379999798 1.0246e-08 au
q 2.469441634755738 8.3548e-08 au
i 2.039286079771416 3.1552e-06 deg
node 257.1589955145647 9.2311e-05 deg
peri 87.01268093000749 9.3773e-05 deg
M 159.5056544930339 1.6434e-05 deg
tp 2458664.199499067299
(2019-Jun-29.69949907)
7.4826e-05 TDB
period 1652.782662618935
4.53
9.2846e-06
2.542e-08
d
yr
n .2178144822922804 1.2236e-09 deg/d
Q 3.002081125243859 1.1243e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1919  
   data-arc span      14666 days (40.15 yr)  
   first obs. used      1981-02-09  
   last obs. used      2021-04-06  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .47462  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 17:30:09  

Additional Information
 Earth MOID = 1.46192 au 
 Jupiter MOID = 2.34816 au 
 T_jup = 3.344 
[ 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 14.49   n/a E2021B10  

15681 (1981 ES17)          Discovered 1981-Mar-02 by Bus, S. J. at Siding Spring
Reference: 20000726/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1981 ES17 = 1990 EU9 = 2000 KH31 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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