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103155 (1999 XN222)
Classification: Main-belt Asteroid          SPK-ID: 2103155
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09241540056564031 5.1611e-08  
a 2.51855283471888 1.5054e-08 au
q 2.285799765652606 1.2845e-07 au
i 3.465175072474672 6.063e-06 deg
node 332.1678077319179 7.0864e-05 deg
peri 123.0103098677311 7.6024e-05 deg
M 86.7491292669929 2.925e-05 deg
tp 2458848.706630755675
(2019-Dec-31.20663076)		 0.0001179 TDB
period 1459.906445149117
4.00		 1.3089e-05
3.584e-08		 d
yr
n .2465911436970395 2.2109e-09 deg/d
Q 2.751305903785155 1.6445e-08 au
   Orbit Determination Parameters
   # obs. used (total)      550  
   data-arc span      8196 days (22.44 yr)  
   first obs. used      1998-08-17  
   last obs. used      2021-01-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54256  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 19:33:28  

Additional Information
 Earth MOID = 1.30458 au 
 Jupiter MOID = 2.37169 au 
 T_jup = 3.449 
[ 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 15.48   n/a E2021B55  

103155 (1999 XN222)          Discovered 1999-Dec-15 by LINEAR at Socorro
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

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Alternate Designations
 1999 XN222 = 2002 PK127 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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