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103018 (1999 XW105)
Classification: Main-belt Asteroid          SPK-ID: 2103018
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 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1501365033977882 4.3557e-08  
a 2.312477871195322 7.8184e-09 au
q 1.965290529429296 1.0081e-07 au
i 3.14369700222994 4.5699e-06 deg
node 114.343326904145 8.5709e-05 deg
peri 318.126876435431 8.7099e-05 deg
M 11.53291702429211 1.5185e-05 deg
tp 2459159.351740329589
(2020-Nov-05.85174033)
5.4133e-05 TDB
period 1284.442908081821
3.52
6.5139e-06
1.783e-08
d
yr
n .2802771518569259 1.4214e-09 deg/d
Q 2.659665212961349 8.9922e-09 au
  Orbit Determination Parameters
   # obs. used (total)      921  
   data-arc span      7713 days (21.12 yr)  
   first obs. used      1999-12-08  
   last obs. used      2021-01-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48437  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 08:33:04  

Additional Information
 Earth MOID = .980919 au 
 Jupiter MOID = 2.59287 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 15.9   n/a MPO341293  

103018 (1999 XW105)          Discovered 1999-Dec-11 by Kobayashi, T. at Oizumi
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

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Alternate Designations
 1999 XW105 = 2002 RP50 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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