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103021 (1999 XM109)
Classification: Main-belt Asteroid          SPK-ID: 2103021
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08491318239357359 2.9109e-08  
a 2.443838246081018 1.1306e-08 au
q 2.23632416335115 6.9269e-08 au
i 4.019069118929229 3.5063e-06 deg
node 108.675817905978 8.7446e-05 deg
peri 347.9319119696289 9.8952e-05 deg
M 97.35620714030733 4.5739e-05 deg
tp 2458623.129229986907
(2019-May-19.62922999)
0.000177 TDB
period 1395.426970659659
3.82
9.6833e-06
2.651e-08
d
yr
n .2579855539339458 1.7902e-09 deg/d
Q 2.651352328810887 1.2266e-08 au
  Orbit Determination Parameters
   # obs. used (total)      656  
   data-arc span      11506 days (31.50 yr)  
   first obs. used      1989-01-10  
   last obs. used      2020-07-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5763  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 19:51:10  

Additional Information
 Earth MOID = 1.25334 au 
 Jupiter MOID = 2.45925 au 
 T_jup = 3.492 
[ 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 16.08   n/a E2021B55  

103021 (1999 XM109)          Discovered 1999-Dec-04 by CSS at Catalina
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
Alternate Designations
 1999 XM109 = 1989 AC10 = 2001 FH194 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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