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102942 (1999 XX50)
Classification: Main-belt Asteroid          SPK-ID: 2102942
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 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1287481230932381 4.7484e-08  
a 2.341150383968372 9.4728e-09 au
q 2.03973166615343 1.1034e-07 au
i 8.339828028509649 3.3552e-06 deg
node 84.84471826169809 3.5762e-05 deg
peri 218.7828991285669 4.0303e-05 deg
M 61.82970941743157 1.8927e-05 deg
tp 2458975.782394351641
(2020-May-06.28239435)
6.8932e-05 TDB
period 1308.405599761752
3.58
7.9411e-06
2.174e-08
d
yr
n .2751440379539438 1.6699e-09 deg/d
Q 2.642569101783314 1.0692e-08 au
  Orbit Determination Parameters
   # obs. used (total)      530  
   data-arc span      8263 days (22.62 yr)  
   first obs. used      1998-05-24  
   last obs. used      2021-01-06  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .56989  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 15:44:22  

Additional Information
 Earth MOID = 1.02946 au 
 Jupiter MOID = 2.55434 au 
 T_jup = 3.539 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457598.5 (2016-Jul-29.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1284321414394298 4.7475e-08  
q 2.040731989095478 1.1038e-07 au
tp 2457668.201669756902
(2016-Oct-06.70166976)
7.0353e-05 TDB
node 84.85688947481002 3.5755e-05 deg
peri 219.136400132204 4.0293e-05 deg
i 8.340362526243366 3.355e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      530  
   data-arc span      8263 days (22.62 yr)  
   first obs. used      1998-05-24  
   last obs. used      2021-01-06  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .56989  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 15:44:22  

Additional Information
 Jupiter MOID = 2.55434 au 
 T_jup = 3.539 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.253853469452079E-15 -5.225595461877481E-15 1.693813777556998E-12 -9.074473521198037E-15 3.892541676339349E-13 -7.827164268316816E-15
q -5.225595461877481E-15 1.218313407966707E-14 -4.103897284775428E-12 2.236265363399331E-14 -9.538948891947076E-13 1.863548499591099E-14
tp 1.693813777556998E-12 -4.103897284775428E-12 4.949515930492556E-9 -1.079704565449662E-11 1.336446733914487E-9 -1.354625710093265E-11
node -9.074473521198037E-15 2.236265363399331E-14 -1.079704565449662E-11 1.278426573565438E-9 -1.267717346519327E-9 9.770070592008189E-12
peri 3.892541676339349E-13 -9.538948891947076E-13 1.336446733914487E-9 -1.267717346519327E-9 1.623531591543503E-9 -1.31321559437088E-11
i -7.827164268316816E-15 1.863548499591099E-14 -1.354625710093265E-11 9.770070592008189E-12 -1.31321559437088E-11 1.125596497192842E-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 16.36   n/a E2021B55  

102942 (1999 XX50)          Discovered 1999-Dec-07 by LINEAR at Socorro
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

Alternate Designations
 1999 XX50 = 2002 RM213 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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