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JPL Small-Body Database Browser
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20448 (1999 JM96)
Classification: Main-belt Asteroid          SPK-ID: 2020448
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 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2196081180485382 4.4685e-08  
a 2.52552044247214 1.392e-08 au
q 1.970895651007722 1.1371e-07 au
i 14.68767388727063 5.7998e-06 deg
node 91.92386998176649 2.4052e-05 deg
peri 250.3328353200371 3.0354e-05 deg
M 2.751162179302957 2.1573e-05 deg
tp 2458989.296893850494
(2020-May-19.79689385)
8.7809e-05 TDB
period 1465.968907308893
4.01
1.212e-05
3.318e-08
d
yr
n .2455713748123478 2.0303e-09 deg/d
Q 3.080145233936558 1.6977e-08 au
  Orbit Determination Parameters
   # obs. used (total)      878  
   data-arc span      8721 days (23.88 yr)  
   first obs. used      1995-06-25  
   last obs. used      2019-05-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57255  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 02:52:32  

Additional Information
 Earth MOID = 1.01536 au 
 Jupiter MOID = 2.42542 au 
 T_jup = 3.375 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456611.5 (2013-Nov-15.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2196946768283806 4.5188e-08  
q 1.971325156986297 1.1554e-07 au
tp 2456059.191616293929
(2012-May-11.69161629)
8.1788e-05 TDB
node 91.95418558712443 2.4053e-05 deg
peri 250.7454066337448 3.0358e-05 deg
i 14.68683490752828 5.8028e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      878  
   data-arc span      8721 days (23.88 yr)  
   first obs. used      1995-06-25  
   last obs. used      2019-05-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57255  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 02:52:32  

Additional Information
 Jupiter MOID = 2.42542 au 
 T_jup = 3.375 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.041925902525974E-15 -5.198457080548347E-15 2.125530790666096E-12 -2.197183715496524E-15 5.232477631999641E-13 3.340418493963708E-15
q -5.198457080548347E-15 1.33491401449223E-14 -5.296487893209804E-12 5.677781703871281E-15 -1.2995177682767E-12 -8.207639033612138E-15
tp 2.125530790666096E-12 -5.296487893209804E-12 6.689229835181497E-9 2.013279330410655E-11 1.567933897470477E-9 -2.703335102952724E-13
node -2.197183715496524E-15 5.677781703871281E-15 2.013279330410655E-11 5.785301180647569E-10 -5.548318124608978E-10 -7.925553518649311E-11
peri 5.232477631999641E-13 -1.2995177682767E-12 1.567933897470477E-9 -5.548318124608978E-10 9.216194651186991E-10 7.684315566101309E-11
i 3.340418493963708E-15 -8.207639033612138E-15 -2.703335102952724E-13 -7.925553518649311E-11 7.684315566101309E-11 3.367248283842314E-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 14.9   n/a MPO337431  

20448 (1999 JM96)          Discovered 1999-May-12 by LINEAR at Socorro
Reference: 20010109/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 JM96 = 1996 XH24 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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