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103157 (1999 XU223)
Classification: Main-belt Asteroid          SPK-ID: 2103157
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1406547997275915 5.2564e-08  
a 2.640485129489123 1.4424e-08 au
q 2.269088222417147 1.4569e-07 au
i 8.531188092252696 4.8377e-06 deg
node 282.1461797722953 3.4824e-05 deg
peri 165.0654932739285 4.1033e-05 deg
M 332.8901784422303 1.9413e-05 deg
tp 2459318.517979215667
(2021-Apr-14.01797922)
8.4565e-05 TDB
period 1567.19853087574
4.29
1.2841e-05
3.516e-08
d
yr
n .2297092505560444 1.8822e-09 deg/d
Q 3.011882036561099 1.6452e-08 au
  Orbit Determination Parameters
   # obs. used (total)      654  
   data-arc span      7757 days (21.24 yr)  
   first obs. used      1999-11-16  
   last obs. used      2021-02-10  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50864  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 15:45:23  

Additional Information
 Earth MOID = 1.28641 au 
 Jupiter MOID = 2.18854 au 
 T_jup = 3.366 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457437.5 (2016-Feb-19.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1392111044147107 5.1951e-08  
q 2.274226585152208 1.4374e-07 au
tp 2457745.429146737159
(2016-Dec-22.92914674)
8.6846e-05 TDB
node 282.2692272442346 3.4938e-05 deg
peri 163.9486419357012 4.1362e-05 deg
i 8.513456817161606 4.83e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      654  
   data-arc span      7757 days (21.24 yr)  
   first obs. used      1999-11-16  
   last obs. used      2021-02-10  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50864  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 15:45:23  

Additional Information
 Jupiter MOID = 2.18854 au 
 T_jup = 3.366 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.698934230439964E-15 -7.447036694835633E-15 2.373696289649838E-13 -3.957881348977011E-15 1.758824903218823E-13 -5.104461000707237E-15
q -7.447036694835633E-15 2.066111339484217E-14 -7.026827568173272E-13 1.313056154812257E-14 -5.061307319636702E-13 1.430574933246393E-14
tp 2.373696289649838E-13 -7.026827568173272E-13 7.542213881310409E-9 1.947900370807457E-11 1.939279779419884E-9 9.83654492020123E-12
node -3.957881348977011E-15 1.313056154812257E-14 1.947900370807457E-11 1.220687783591026E-9 -1.202444080026714E-9 -1.789379379725198E-11
peri 1.758824903218823E-13 -5.061307319636702E-13 1.939279779419884E-9 -1.202444080026714E-9 1.710776987727303E-9 1.998127558622997E-11
i -5.104461000707237E-15 1.430574933246393E-14 9.83654492020123E-12 -1.789379379725198E-11 1.998127558622997E-11 2.332888464777134E-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 15.46   n/a E2021B55  

103157 (1999 XU223)          Discovered 1999-Dec-13 by Spacewatch at Kitt Peak
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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