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78868 (2003 QE87)
Classification: Main-belt Asteroid          SPK-ID: 2078868
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05950007468731515 3.398e-08  
a 2.427039420861159 1.2714e-08 au
q 2.282630394050861 8.0685e-08 au
i 5.168459867531106 4.3531e-06 deg
node 339.353545932797 4.7987e-05 deg
peri 50.68083285075327 6.3621e-05 deg
M 109.3697485560264 4.2707e-05 deg
tp 2458580.926176662042
(2019-Apr-07.42617666)
0.00016313 TDB
period 1381.063579242747
3.78
1.0852e-05
2.971e-08
d
yr
n .2606686653755593 2.0483e-09 deg/d
Q 2.571448447671456 1.3471e-08 au
  Orbit Determination Parameters
   # obs. used (total)      593  
   data-arc span      8038 days (22.01 yr)  
   first obs. used      1998-03-20  
   last obs. used      2020-03-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52368  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 21:25:12  

Additional Information
 Earth MOID = 1.29049 au 
 Jupiter MOID = 2.66121 au 
 T_jup = 3.502 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457037.5 (2015-Jan-15.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05901563685892445 3.3851e-08  
q 2.28390771337944 8.0343e-08 au
tp 2457195.190499804575
(2015-Jun-21.69049980)
0.00016298 TDB
node 339.4269582839464 4.7912e-05 deg
peri 49.46179614505628 6.3891e-05 deg
i 5.173498964671865 4.3557e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      593  
   data-arc span      8038 days (22.01 yr)  
   first obs. used      1998-03-20  
   last obs. used      2020-03-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52368  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 21:25:12  

Additional Information
 Jupiter MOID = 2.66121 au 
 T_jup = 3.502 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.145903369610688E-15 -2.69087170046182E-15 4.06037207998754E-13 1.709042493075566E-15 9.648849270791956E-14 -7.742205075220274E-16
q -2.69087170046182E-15 6.454961213141692E-15 -6.840994160274267E-13 -3.956097182407128E-15 -1.617566922116086E-13 1.888219925287577E-15
tp 4.06037207998754E-13 -6.840994160274267E-13 2.656199527699447E-8 4.725288817393691E-11 6.907890392552724E-9 -5.23952792673291E-12
node 1.709042493075566E-15 -3.956097182407128E-15 4.725288817393691E-11 2.295581738335524E-9 -2.273467504684401E-9 -5.29011055012671E-11
peri 9.648849270791956E-14 -1.617566922116086E-13 6.907890392552724E-9 -2.273467504684401E-9 4.082030909907028E-9 5.13373169453589E-11
i -7.742205075220274E-16 1.888219925287577E-15 -5.23952792673291E-12 -5.29011055012671E-11 5.13373169453589E-11 1.897196544808026E-11

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 15.9   n/a MPO453211  

78868 (2003 QE87)          Discovered 2003-Aug-25 by LINEAR at Socorro
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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