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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05965950109574559 3.3921e-08  
a 2.426636009759021 1.2518e-08 au
q 2.281864116075827 8.0628e-08 au
i 5.168810278185433 4.263e-06 deg
node 339.3539654529524 4.7097e-05 deg
peri 50.59254190182661 6.2268e-05 deg
M 161.5930432114661 4.2005e-05 deg
tp 2458580.737145891658
(2019-Apr-07.23714589)
0.00015986 TDB
period 1380.719262691451
3.78
1.0684e-05
2.925e-08
d
yr
n .2607336695645486 2.0175e-09 deg/d
Q 2.571407903442215 1.3265e-08 au
  Orbit Determination Parameters
   # obs. used (total)      600  
   data-arc span      8375 days (22.93 yr)  
   first obs. used      1998-03-20  
   last obs. used      2021-02-22  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52287  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 13:39:01  

Additional Information
 Earth MOID = 1.28838 au 
 Jupiter MOID = 2.6612 au 
 T_jup = 3.502 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457139.5 (2015-Apr-27.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05892847373953861 3.3787e-08  
q 2.283911213796503 8.0281e-08 au
tp 2457195.253897583992
(2015-Jun-21.75389758)
0.00015993 TDB
node 339.4271550478295 4.7026e-05 deg
peri 49.47882046963311 6.2646e-05 deg
i 5.173573024662394 4.2653e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      600  
   data-arc span      8375 days (22.93 yr)  
   first obs. used      1998-03-20  
   last obs. used      2021-02-22  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52287  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 13:39:01  

Additional Information
 Jupiter MOID = 2.6612 au 
 T_jup = 3.502 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.141563256606098E-15 -2.684459332374168E-15 4.761022702914355E-13 1.826548240966384E-15 1.158674144176304E-13 -7.803841958890463E-16
q -2.684459332374168E-15 6.445067049554214E-15 -7.841879483787128E-13 -4.091099333175412E-15 -1.895065100586297E-13 1.893619722230393E-15
tp 4.761022702914355E-13 -7.841879483787128E-13 2.557792702940743E-8 4.267988941896767E-11 6.638056664796993E-9 -4.836479947578788E-12
node 1.826548240966384E-15 -4.091099333175412E-15 4.267988941896767E-11 2.211432012822472E-9 -2.190886880339868E-9 -4.481127362837335E-11
peri 1.158674144176304E-13 -1.895065100586297E-13 6.638056664796993E-9 -2.190886880339868E-9 3.924494870705437E-9 4.338811505277299E-11
i -7.803841958890463E-16 1.893619722230393E-15 -4.836479947578788E-12 -4.481127362837335E-11 4.338811505277299E-11 1.819305543218361E-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 15.97   n/a E2021B10  

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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