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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 ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .102507558383949 4.5532e-08  
a 2.212690070729471 8.4406e-09 au
q 1.985872614118586 1.0185e-07 au
i 2.299992916870573 4.5982e-06 deg
node 138.1555546490252 0.0001117 deg
peri 40.28019805382358 0.00011385 deg
M 300.1304914488583 2.4491e-05 deg
tp 2459200.432087167602
(2020-Dec-16.93208717)
8.2376e-05 TDB
period 1202.207152224307
3.29
6.879e-06
1.883e-08
d
yr
n .299449224980847 1.7134e-09 deg/d
Q 2.439507527340357 9.3058e-09 au
  Orbit Determination Parameters
   # obs. used (total)      773  
   data-arc span      7881 days (21.58 yr)  
   first obs. used      1998-05-22  
   last obs. used      2019-12-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57774  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 08:43:42  

Additional Information
 Earth MOID = .990128 au 
 Jupiter MOID = 2.51918 au 
 T_jup = 3.648 
[ show covariance matrix ]

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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