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47217 (1999 UF18)
Classification: Main-belt Asteroid          SPK-ID: 2047217
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1025075615913618 4.5323e-08  
a 2.212690070943534 8.4205e-09 au
q 1.985872607213695 1.0144e-07 au
i 2.299992459937736 4.5788e-06 deg
node 138.155545804796 0.00011129 deg
peri 40.2802071977834 0.00011345 deg
M 300.1304908926748 2.4476e-05 deg
tp 2459200.432089053971
(2020-Dec-16.93208905)
8.2325e-05 TDB
period 1202.207152398766
3.29
6.8626e-06
1.879e-08
d
yr
n .2994492249373925 1.7094e-09 deg/d
Q 2.439507534673373 9.2837e-09 au
  Orbit Determination Parameters
   # obs. used (total)      779  
   data-arc span      7987 days (21.87 yr)  
   first obs. used      1998-05-22  
   last obs. used      2020-04-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58081  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 23:43:20  

Additional Information
 Earth MOID = .990128 au 
 Jupiter MOID = 2.51918 au 
 T_jup = 3.648 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456334.5 (2013-Feb-11.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1030700570613658 4.535e-08  
q 1.984279236284113 1.0155e-07 au
tp 2456796.546880913194
(2014-May-19.04688091)
7.5659e-05 TDB
node 138.2083106852315 0.0001114 deg
peri 40.41683120036489 0.00011353 deg
i 2.298957497684782 4.5774e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      779  
   data-arc span      7987 days (21.87 yr)  
   first obs. used      1998-05-22  
   last obs. used      2020-04-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58081  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 23:43:20  

Additional Information
 Jupiter MOID = 2.51918 au 
 T_jup = 3.648 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.056583647603003E-15 -4.592842969048635E-15 -4.505515045622633E-13 1.301436901444892E-14 -9.603237184530266E-14 3.715044044898224E-18
q -4.592842969048635E-15 1.031309835844358E-14 1.217127052749867E-12 -2.871107926379971E-14 2.691158363243441E-13 6.269905297382147E-17
tp -4.505515045622633E-13 1.217127052749867E-12 5.724355195559229E-9 -2.928398823959069E-12 1.672209692632578E-9 1.433106187112948E-12
node 1.301436901444892E-14 -2.871107926379971E-14 -2.928398823959069E-12 1.24104688306853E-8 -1.240004239677885E-8 5.209633845096895E-11
peri -9.603237184530266E-14 2.691158363243441E-13 1.672209692632578E-9 -1.240004239677885E-8 1.288939652232728E-8 -5.164397095596215E-11
i 3.715044044898224E-18 6.269905297382147E-17 1.433106187112948E-12 5.209633845096895E-11 -5.164397095596215E-11 2.095249306246497E-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 16.0   n/a MPO452815  

47217 (1999 UF18)          Discovered 1999-Oct-30 by Spacewatch at Kitt Peak
Reference: 20020921/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1999 UF18 = 1998 KS31 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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