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47428 (1999 XK172)
Classification: Main-belt Asteroid          SPK-ID: 2047428
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1935946341109279 4.6823e-08  
a 2.297578315771606 7.3316e-09 au
q 1.8527794823886 1.075e-07 au
i 3.596465141312558 4.9031e-06 deg
node 352.289297004935 5.6478e-05 deg
peri 32.85958163369386 5.7708e-05 deg
M 7.287288257159491 1.0214e-05 deg
tp 2458974.750585363089
(2020-May-05.25058536)
3.6063e-05 TDB
period 1272.049209825177
3.48
6.0887e-06
1.667e-08
d
yr
n .2830079192057958 1.3546e-09 deg/d
Q 2.742377149154612 8.751e-09 au
  Orbit Determination Parameters
   # obs. used (total)      955  
   data-arc span      9164 days (25.09 yr)  
   first obs. used      1995-09-26  
   last obs. used      2020-10-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53683  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 23:42:18  

Additional Information
 Earth MOID = .857713 au 
 Jupiter MOID = 2.71934 au 
 T_jup = 3.566 
[ show covariance matrix ]

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 15.5   n/a MPO449302  

47428 (1999 XK172)          Discovered 1999-Dec-10 by LINEAR at Socorro
Reference: 20020921/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 XK172 = 1995 SY45 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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