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173231 (1998 XX)
Classification: Main-belt Asteroid          SPK-ID: 2173231
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 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1629548603521771 6.2119e-08  
a 2.642714000313257 2.0944e-08 au
q 2.212070909441467 1.7218e-07 au
i 14.27454156516111 5.4341e-06 deg
node 63.72533275244854 2.4491e-05 deg
peri 330.8418537477688 2.982e-05 deg
M 17.00646985831073 1.8538e-05 deg
tp 2458926.371476821363
(2020-Mar-17.87147682)
8.0312e-05 TDB
period 1569.183291220689
4.30
1.8654e-05
5.107e-08
d
yr
n .2294187059052554 2.7272e-09 deg/d
Q 3.073357091185047 2.4357e-08 au
  Orbit Determination Parameters
   # obs. used (total)      311  
   data-arc span      7736 days (21.18 yr)  
   first obs. used      1998-11-18  
   last obs. used      2020-01-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58824  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 17:01:01  

Additional Information
 Earth MOID = 1.23078 au 
 Jupiter MOID = 2.35334 au 
 T_jup = 3.332 
[ 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 16.1   n/a MPO449897  

173231 (1998 XX)          Discovered 1998-Dec-07 by ODAS at Caussols
Reference: 20080122/Numbers.arcLast Updated: 2008-01-28

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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