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120982 (1998 XE6)
Classification: Main-belt Asteroid          SPK-ID: 2120982
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 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .156944000763387 2.9661e-08  
a 2.318754926361775 7.6981e-09 au
q 1.954840251428745 6.9995e-08 au
i 4.029396530724033 3.4664e-06 deg
node 89.44676846439494 6.0702e-05 deg
peri 356.6599653661799 6.2661e-05 deg
M 14.2903060026223 1.5272e-05 deg
tp 2458949.305921606275
(2020-Apr-09.80592161)
5.4652e-05 TDB
period 1289.676247545658
3.53
6.4224e-06
1.758e-08
d
yr
n .2791398234131276 1.3901e-09 deg/d
Q 2.682669601294804 8.9062e-09 au
  Orbit Determination Parameters
   # obs. used (total)      560  
   data-arc span      7707 days (21.10 yr)  
   first obs. used      1998-11-21  
   last obs. used      2019-12-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .61327  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 17:53:22  

Additional Information
 Earth MOID = .971138 au 
 Jupiter MOID = 2.51779 au 
 T_jup = 3.559 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457171.5 (2015-May-29.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1558270958155027 2.9551e-08  
q 1.957760198684259 6.967e-08 au
tp 2457658.509217705105
(2016-Sep-27.00921771)
5.4348e-05 TDB
node 89.48826255795073 6.0766e-05 deg
peri 356.3986786001082 6.2772e-05 deg
i 4.027388455054089 3.4635e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      560  
   data-arc span      7707 days (21.10 yr)  
   first obs. used      1998-11-21  
   last obs. used      2019-12-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .61327  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 17:53:22  

Additional Information
 Jupiter MOID = 2.51779 au 
 T_jup = 3.559 
Orbit Covariance (6×6)
  e q tp node peri i
e 8.732799138665762E-16 -2.050011695339712E-15 1.934339842214842E-14 1.545904316111386E-15 2.463683415751177E-14 -1.137231228934677E-15
q -2.050011695339712E-15 4.853939551749272E-15 -2.778612132528715E-15 -3.055047426568571E-15 -5.074254919372386E-14 2.801486993904544E-15
tp 1.934339842214842E-14 -2.778612132528715E-15 2.953664329673748E-9 4.380714241374023E-11 8.732365373400568E-10 1.482142911755262E-12
node 1.545904316111386E-15 -3.055047426568571E-15 4.380714241374023E-11 3.692503418338253E-9 -3.669654505935488E-9 -9.380460985253357E-12
peri 2.463683415751177E-14 -5.074254919372386E-14 8.732365373400568E-10 -3.669654505935488E-9 3.940312742555614E-9 9.763568389814018E-12
i -1.137231228934677E-15 2.801486993904544E-15 1.482142911755262E-12 -9.380460985253357E-12 9.763568389814018E-12 1.199588358172818E-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 16.8   n/a MPO417630  

120982 (1998 XE6)          Discovered 1998-Dec-08 by Spacewatch at Kitt Peak
Reference: 20060314/Numbers.arcLast Updated: 2006-03-23

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