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187220 (2005 SX129)
Classification: Main-belt Asteroid          SPK-ID: 2187220
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ hide orbit diagram ]

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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1042089575582852 4.0705e-08  
a 2.769295886441831 1.5387e-08 au
q 2.48071044894528 1.1117e-07 au
i 3.288483446369039 4.5503e-06 deg
node 332.7034748550056 6.8198e-05 deg
peri 69.94351619322501 7.2305e-05 deg
M 85.79621660237197 2.2148e-05 deg
tp 2458799.339555414778
(2019-Nov-11.83955541)
0.00010331 TDB
period 1683.264901061932
4.61
1.4029e-05
3.841e-08
d
yr
n .2138700805636026 1.7825e-09 deg/d
Q 3.057881323938381 1.6991e-08 au
  Orbit Determination Parameters
   # obs. used (total)      540  
   data-arc span      7546 days (20.66 yr)  
   first obs. used      2000-08-02  
   last obs. used      2021-03-31  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .54337  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 10:14:50  

Additional Information
 Earth MOID = 1.49053 au 
 Jupiter MOID = 2.30821 au 
 T_jup = 3.328 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457375.5 (2015-Dec-19.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1021522079718655 4.0942e-08  
q 2.486070761992828 1.1154e-07 au
tp 2457109.179226823092
(2015-Mar-27.67922682)
0.00010622 TDB
node 332.9155202154703 6.7899e-05 deg
peri 68.43560255909894 7.2236e-05 deg
i 3.296779440224094 4.558e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      540  
   data-arc span      7546 days (20.66 yr)  
   first obs. used      2000-08-02  
   last obs. used      2021-03-31  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .54337  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 10:14:50  

Additional Information
 Jupiter MOID = 2.30821 au 
 T_jup = 3.328 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.676245313119493E-15 -4.53272534747838E-15 -1.800660444164175E-12 7.587567470371364E-15 -4.388048712273872E-13 -1.204121803789554E-15
q -4.53272534747838E-15 1.244139582644288E-14 4.89153582720982E-12 -2.187459087588661E-14 1.197837073251239E-12 3.50855790977375E-15
tp -1.800660444164175E-12 4.89153582720982E-12 1.128216276330253E-8 -2.881827459864355E-11 2.633873354759694E-9 1.197292794798247E-12
node 7.587567470371364E-15 -2.187459087588661E-14 -2.881827459864355E-11 4.610283321057934E-9 -4.608941852308411E-9 7.115841700687445E-11
peri -4.388048712273872E-13 1.197837073251239E-12 2.633873354759694E-9 -4.608941852308411E-9 5.217984357645467E-9 -7.075756897254862E-11
i -1.204121803789554E-15 3.50855790977375E-15 1.197292794798247E-12 7.115841700687445E-11 -7.075756897254862E-11 2.077526344034517E-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 16.09   n/a MPCxxxxx  

187220 (2005 SX129)          Discovered 2005-Sep-29 by LONEOS at Anderson Mesa
Reference: 20080520/Numbers.arcLast Updated: 2008-05-22
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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