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173232 (1998 XC9)
Classification: Amor [NEO]          SPK-ID: 2173232
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 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .5330895632195928 2.2564e-07  
a 2.750135727505665 8.9192e-08 au
q 1.284067073735073 6.5797e-07 au
i 9.582680805282605 1.8348e-05 deg
node 317.3537484789895 6.3727e-05 deg
peri 124.4428336926236 9.2536e-05 deg
M 253.8369600498218 5.9551e-05 deg
tp 2459491.747625523550
(2021-Oct-04.24762552)
0.00028208 TDB
period 1665.825934067756
4.56
8.1039e-05
2.219e-07
d
yr
n .2161090139357606 1.0513e-08 deg/d
Q 4.216204381276256 1.3674e-07 au
  Orbit Determination Parameters
   # obs. used (total)      159  
   data-arc span      6509 days (17.82 yr)  
   first obs. used      1998-12-12  
   last obs. used      2016-10-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58917  
   source      ORB  
   producer      Otto Matic  
   solution date      2017-Apr-06 09:25:57  

Additional Information
 Earth MOID = .334924 au 
 Jupiter MOID = 1.23305 au 
 T_jup = 3.105 
[ 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 18.1   n/a MPO133285  

173232 (1998 XC9)          Discovered 1998-Dec-12 by LINEAR at Socorro
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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