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103185 (1999 XD242)
Classification: Main-belt Asteroid          SPK-ID: 2103185
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 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1893354198795756 4.8783e-08  
a 2.339648243494364 1.0813e-08 au
q 1.896669960941847 1.1382e-07 au
i 4.562349423657462 5.0155e-06 deg
node 321.5250340749511 6.206e-05 deg
peri 193.8583397666629 6.3534e-05 deg
M 246.6738069556851 1.6976e-05 deg
tp 2459611.983170836040
(2022-Feb-01.48317084)
6.3733e-05 TDB
period 1307.146543280141
3.58
9.0615e-06
2.481e-08
d
yr
n .2754090594132005 1.9092e-09 deg/d
Q 2.782626526046881 1.286e-08 au
  Orbit Determination Parameters
   # obs. used (total)      651  
   data-arc span      7694 days (21.07 yr)  
   first obs. used      1999-12-13  
   last obs. used      2021-01-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53307  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 08:33:36  

Additional Information
 Earth MOID = .906851 au 
 Jupiter MOID = 2.2144 au 
 T_jup = 3.537 
[ 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 15.8   n/a MPO273091  

103185 (1999 XD242)          Discovered 1999-Dec-13 by CSS at Catalina
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
Alternate Designations
 1999 XD242 = 2002 RB159 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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