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101731 (1999 EN10)
Classification: Main-belt Asteroid          SPK-ID: 2101731
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1110333034722585 1.8727e-07  
a 2.549111484491204 1.5165e-08 au
q 2.266075215449073 4.8743e-07 au
i 1.888791815260698 7.1687e-06 deg
node 322.1128094816472 0.00010727 deg
peri 192.0699242021124 0.00011165 deg
M 90.77958737434651 2.1608e-05 deg
tp 2458625.641489751684
(2019-May-22.14148975)
8.9174e-05 TDB
period 1486.557359342318
4.07
1.3266e-05
3.632e-08
d
yr
n .2421702719626447 2.1611e-09 deg/d
Q 2.832147753533335 1.6849e-08 au
  Orbit Determination Parameters
   # obs. used (total)      786  
   data-arc span      21375 days (58.52 yr)  
   first obs. used      1960-09-24  
   last obs. used      2019-04-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57079  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 01:25:37  

Additional Information
 Earth MOID = 1.27618 au 
 Jupiter MOID = 2.15753 au 
 T_jup = 3.432 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456422.5 (2013-May-10.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1117977605945262 1.8687e-07  
q 2.263140581174262 4.881e-07 au
tp 2457140.269083559782
(2015-Apr-27.76908356)
8.8741e-05 TDB
node 322.1574423598179 0.00010725 deg
peri 192.179639190169 0.0001114 deg
i 1.889837257111876 7.1687e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      786  
   data-arc span      21375 days (58.52 yr)  
   first obs. used      1960-09-24  
   last obs. used      2019-04-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57079  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 01:25:37  

Additional Information
 Jupiter MOID = 2.15753 au 
 T_jup = 3.432 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.491977055034138E-14 -9.119355527555785E-14 5.645135081189855E-12 -1.242345490662088E-13 3.645256586186984E-12 -1.375278601040311E-14
q -9.119355527555785E-14 2.382376854471612E-13 -1.461769507486784E-11 3.240818450592671E-13 -9.496771273650818E-12 3.596874734304174E-14
tp 5.645135081189855E-12 -1.461769507486784E-11 7.874976438194195E-9 -1.297598356875807E-11 2.509302307715137E-9 -5.002295513021726E-13
node -1.242345490662088E-13 3.240818450592671E-13 -1.297598356875807E-11 1.150157223180592E-8 -1.150531974113516E-8 -3.930543912827484E-12
peri 3.645256586186984E-12 -9.496771273650818E-12 2.509302307715137E-9 -1.150531974113516E-8 1.240987499226857E-8 3.028644867307421E-12
i -1.375278601040311E-14 3.596874734304174E-14 -5.002295513021726E-13 -3.930543912827484E-12 3.028644867307421E-12 5.138997729478645E-11

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.9   n/a MPO273086  

101731 (1999 EN10)          Discovered 1999-Mar-14 by Spacewatch at Kitt Peak
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

Alternate Designations
 1999 EN10 = 2001 UN59 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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