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246687 (2009 AD)
Classification: Main-belt Asteroid          SPK-ID: 2246687
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1811020846041535 4.4644e-08  
a 2.456923660004397 1.2131e-08 au
q 2.011969663464334 1.1119e-07 au
i .4783497860107724 5.0751e-06 deg
node 293.7681719647898 0.00071629 deg
peri 108.0986678755703 0.00071661 deg
M 37.08862288327659 1.9678e-05 deg
tp 2458855.581400603090
(2020-Jan-07.08140060)
7.7005e-05 TDB
period 1406.6495794971
3.85
1.0418e-05
2.852e-08
d
yr
n .2559272794356543 1.8954e-09 deg/d
Q 2.90187765654446 1.4328e-08 au
  Orbit Determination Parameters
   # obs. used (total)      387  
   data-arc span      9396 days (25.72 yr)  
   first obs. used      1994-03-10  
   last obs. used      2019-11-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .61765  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 16:37:15  

Additional Information
 Earth MOID = 1.02051 au 
 Jupiter MOID = 2.50218 au 
 T_jup = 3.469 
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Orbital Elements at Epoch 2457380.5 (2015-Dec-24.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1809906877375685 4.5349e-08  
q 2.012269922076659 1.1304e-07 au
tp 2457445.331997402798
(2016-Feb-26.83199740)
7.8723e-05 TDB
node 294.4126133621924 0.00071638 deg
peri 106.7291483833261 0.00071669 deg
i .4770128847040677 5.1028e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      387  
   data-arc span      9396 days (25.72 yr)  
   first obs. used      1994-03-10  
   last obs. used      2019-11-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .61765  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 16:37:15  

Additional Information
 Jupiter MOID = 2.50218 au 
 T_jup = 3.469 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.056550092056901E-15 -5.107170096896564E-15 -1.986527206164891E-12 -4.137827587393698E-14 -5.111290060673384E-13 -8.890221593855478E-16
q -5.107170096896564E-15 1.277804708024337E-14 4.727358329942192E-12 1.099092278271173E-13 1.200790360865997E-12 2.282351795537839E-15
tp -1.986527206164891E-12 4.727358329942192E-12 6.197324597336588E-9 9.897264492024264E-11 1.709552020077508E-9 1.788287360747138E-12
node -4.137827587393698E-14 1.099092278271173E-13 9.897264492024264E-11 5.131945777685773E-7 -5.131501784957776E-7 1.891602219479781E-9
peri -5.111290060673384E-13 1.200790360865997E-12 1.709552020077508E-9 -5.131501784957776E-7 5.136458008950411E-7 -1.891058135173596E-9
i -8.890221593855478E-16 2.282351795537839E-15 1.788287360747138E-12 1.891602219479781E-9 -1.891058135173596E-9 2.603838765649641E-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 17.0   n/a MPO494346  

246687 (2009 AD)          Discovered 2009-Jan-01 by Lowe, A. at Mayhill
Reference: 20100726/Numbers.arcLast Updated: 2010-07-28

Alternate Designations
 2009 AD = 2004 XS100 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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