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100167 (1993 UN2)
Classification: Main-belt Asteroid          SPK-ID: 2100167
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 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1812855248272419 1.1799e-07  
a 2.567323296012805 1.5331e-08 au
q 2.101904744893919 3.0889e-07 au
i 3.443019380734325 7.8352e-06 deg
node 312.1383681268928 7.7826e-05 deg
peri 191.1940568908841 7.9012e-05 deg
M 135.5783589356375 1.4702e-05 deg
tp 2458634.642415459637
(2019-May-31.14241546)
5.808e-05 TDB
period 1502.516567052096
4.11
1.3458e-05
3.685e-08
d
yr
n .23959802367192 2.1461e-09 deg/d
Q 3.032741847131691 1.811e-08 au
  Orbit Determination Parameters
   # obs. used (total)      592  
   data-arc span      9267 days (25.37 yr)  
   first obs. used      1993-10-21  
   last obs. used      2019-03-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53874  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 20:07:41  

Additional Information
 Earth MOID = 1.11448 au 
 Jupiter MOID = 1.98928 au 
 T_jup = 3.406 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456250.5 (2012-Nov-19.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1819721309818579 1.1782e-07  
q 2.098277282231976 3.0974e-07 au
tp 2455633.823929776469
(2011-Mar-13.32392978)
4.652e-05 TDB
node 312.1782343963259 7.7861e-05 deg
peri 190.9891460052106 7.9012e-05 deg
i 3.443736582532493 7.8312e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      592  
   data-arc span      9267 days (25.37 yr)  
   first obs. used      1993-10-21  
   last obs. used      2019-03-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53874  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 20:07:41  

Additional Information
 Jupiter MOID = 1.98928 au 
 T_jup = 3.406 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.388080049632153E-14 -3.646739287719355E-14 1.130037627562976E-12 -3.133187333662004E-14 8.137073824352028E-13 -1.562089649810386E-15
q -3.646739287719355E-14 9.593653887492554E-14 -2.816287800352733E-12 8.143156865575275E-14 -2.0906333203742E-12 4.325083776202829E-15
tp 1.130037627562976E-12 -2.816287800352733E-12 2.16413601569836E-9 2.089247075783821E-13 6.085766546420541E-10 1.122361223270178E-12
node -3.133187333662004E-14 8.143156865575275E-14 2.089247075783821E-13 6.062281606290707E-9 -6.052190504248297E-9 2.905999846039059E-10
peri 8.137073824352028E-13 -2.0906333203742E-12 6.085766546420541E-10 -6.052190504248297E-9 6.242821484497739E-9 -2.898067957919665E-10
i -1.562089649810386E-15 4.325083776202829E-15 1.122361223270178E-12 2.905999846039059E-10 -2.898067957919665E-10 6.132841513717872E-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 16.1   n/a MPO417504  

100167 (1993 UN2)          Discovered 1993-Oct-21 by Spacewatch at Kitt Peak
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
Alternate Designations
 1993 UN2 = 1997 WC17 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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