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226991 (2004 XL61)
Classification: Inner Main-belt Asteroid          SPK-ID: 2226991
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07845696964726272 5.8973e-08  
a 1.914633906332892 1.1918e-08 au
q 1.764417532058112 1.1103e-07 au
i 18.28086982989989 6.2317e-06 deg
node 270.9997978626268 1.7584e-05 deg
peri 50.29425649483014 4.1386e-05 deg
M 276.9318428538551 3.8323e-05 deg
tp 2458823.784779741900
(2019-Dec-06.28477974)
0.00010382 TDB
period 967.6694833335953
2.65
9.0353e-06
2.474e-08
d
yr
n .3720278526918196 3.4737e-09 deg/d
Q 2.064850280607672 1.2853e-08 au
  Orbit Determination Parameters
   # obs. used (total)      322  
   data-arc span      6025 days (16.50 yr)  
   first obs. used      2001-07-26  
   last obs. used      2018-01-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53189  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Feb-06 08:24:08  

Additional Information
 Earth MOID = .778535 au 
 Jupiter MOID = 3.12381 au 
 T_jup = 3.866 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457032.5 (2015-Jan-10.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07849907653443561 5.8999e-08  
q 1.764136816035506 1.1102e-07 au
tp 2456888.532769429310
(2014-Aug-19.03276943)
9.7986e-05 TDB
node 271.0371960676023 1.7584e-05 deg
peri 50.21769821493556 4.135e-05 deg
i 18.28177274023214 6.2322e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      322  
   data-arc span      6025 days (16.50 yr)  
   first obs. used      2001-07-26  
   last obs. used      2018-01-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53189  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Feb-06 08:24:08  

Additional Information
 Jupiter MOID = 3.12381 au 
 T_jup = 3.866 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.480880642594827E-15 -6.519181350191741E-15 5.817660278838927E-13 -4.665152319196241E-15 1.802576606304528E-13 1.750680346201368E-14
q -6.519181350191741E-15 1.232521697154252E-14 -8.637222628252247E-13 8.396204402189702E-15 -2.494413404074115E-13 -3.225796720823573E-14
tp 5.817660278838927E-13 -8.637222628252247E-13 9.601294004849264E-9 -4.925524921049525E-11 3.682304249100313E-9 -6.020260499519202E-12
node -4.665152319196241E-15 8.396204402189702E-15 -4.925524921049525E-11 3.091816986933167E-10 -3.12019383710693E-10 1.141799122113708E-11
peri 1.802576606304528E-13 -2.494413404074115E-13 3.682304249100313E-9 -3.12019383710693E-10 1.709787113617553E-9 -1.325064427658549E-11
i 1.750680346201368E-14 -3.225796720823573E-14 -6.020260499519202E-12 1.141799122113708E-11 -1.325064427658549E-11 3.884028029651397E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.7   n/a MPO437075  

226991 (2004 XL61)          Discovered 2004-Dec-14 by LINEAR at Socorro
Reference: 20091202/Numbers.arcLast Updated: 2009-12-04
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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