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103208 (1999 XN254)
Classification: Main-belt Asteroid          SPK-ID: 2103208
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 .196095610784381 5.2938e-08  
a 2.369362072270778 1.0767e-08 au
q 1.904740569539494 1.2525e-07 au
i 2.925805501846875 3.9046e-06 deg
node 286.9132932374662 0.00012643 deg
peri 299.2910188419565 0.0001272 deg
M 173.4144144404012 1.5633e-05 deg
tp 2458558.805572093616
(2019-Mar-16.30557209)
5.6163e-05 TDB
period 1332.126829201336
3.65
9.0804e-06
2.486e-08
d
yr
n .2702445383641395 1.8421e-09 deg/d
Q 2.833983575002063 1.2878e-08 au
  Orbit Determination Parameters
   # obs. used (total)      529  
   data-arc span      7696 days (21.07 yr)  
   first obs. used      1999-12-12  
   last obs. used      2021-01-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57519  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 08:33:41  

Additional Information
 Earth MOID = .896085 au 
 Jupiter MOID = 2.16295 au 
 T_jup = 3.518 
[ 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 16.2   n/a MPC19471  

103208 (1999 XN254)          Discovered 1999-Dec-12 by Spacewatch at Kitt Peak
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
Alternate Designations
 1999 XN254 = 2001 OE109 = 2001 QV35 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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