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103177 (1999 XU234)
Classification: Main-belt Asteroid          SPK-ID: 2103177
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 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1466837193393239 4.4306e-08  
a 2.584422196989136 1.3166e-08 au
q 2.205329536791663 1.164e-07 au
i 6.770481639690312 4.822e-06 deg
node 204.4935764418663 3.8081e-05 deg
peri 192.4816870610495 4.207e-05 deg
M 44.47445495745076 2.0453e-05 deg
tp 2459013.021377366812
(2020-Jun-12.52137737)
8.5413e-05 TDB
period 1517.552136670781
4.15
1.1597e-05
3.175e-08
d
yr
n .2372241396528037 1.8128e-09 deg/d
Q 2.96351485718661 1.5098e-08 au
  Orbit Determination Parameters
   # obs. used (total)      746  
   data-arc span      8690 days (23.79 yr)  
   first obs. used      1997-04-03  
   last obs. used      2021-01-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54016  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 08:33:34  

Additional Information
 Earth MOID = 1.21168 au 
 Jupiter MOID = 2.45783 au 
 T_jup = 3.398 
[ 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 15.6   n/a MPO439703  

103177 (1999 XU234)          Discovered 1999-Dec-03 by LONEOS at Anderson Mesa
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

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