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(2011 SP229)
Classification: Mars-crossing Asteroid          SPK-ID: 3581213
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .511738965307169 2.3108e-06  
a 3.148730409735268 3.5334e-06 au
q 1.537402367826124 9e-06 au
i 23.66358503796478 0.00026601 deg
node 209.6147622933001 0.00026492 deg
peri 122.2106417525052 0.00026993 deg
M 258.10955462469 0.0007382 deg
tp 2459778.107208333703
(2022-Jul-17.60720833)
0.0051499 TDB
period 2040.80563426922
5.59
0.0034352
9.405e-06
d
yr
n .1764009242011478 2.9693e-07 deg/d
Q 4.760058451644413 5.3416e-06 au
  Orbit Determination Parameters
   # obs. used (total)      55  
   data-arc span      1718 days (4.70 yr)  
   first obs. used      2011-09-30  
   last obs. used      2016-06-13  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      2  
   norm. resid. RMS      .47746  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 05:25:39  

Additional Information
 Earth MOID = .643518 au 
 Jupiter MOID = 1.62042 au 
 T_jup = 2.877 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457330.5 (2015-Nov-04.0) TDB
Reference: JPL 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .5103975278129915 2.3128e-06  
q 1.543202048398441 9.0092e-06 au
tp 2457736.041986145395
(2016-Dec-13.54198615)
0.0017785 TDB
node 209.6625166384706 0.00026492 deg
peri 122.1769963085778 0.00026978 deg
i 23.64646389884718 0.00026602 deg
  Orbit Determination Parameters
   # obs. used (total)      55  
   data-arc span      1718 days (4.70 yr)  
   first obs. used      2011-09-30  
   last obs. used      2016-06-13  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      2  
   norm. resid. RMS      .47746  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 05:25:39  

Additional Information
 Jupiter MOID = 1.62042 au 
 T_jup = 2.877 
Orbit Covariance (6×6)
  e q tp node peri i
e 5.349270254773131E-12 -2.083611763503675E-11 -3.868340049911162E-9 -5.751475010521086E-10 5.452143955569709E-10 -5.832652678521838E-10
q -2.083611763503675E-11 8.116480801362035E-11 1.509232028383989E-8 2.242733177768497E-9 -2.120032744945412E-9 2.274621577221278E-9
tp -3.868340049911162E-9 1.509232028383989E-8 3.16323941933955E-6 4.450597374071217E-7 -3.280778737599732E-7 4.563710267311357E-7
node -5.751475010521086E-10 2.242733177768497E-9 4.450597374071217E-7 7.018495294286051E-8 -5.891036255956602E-8 7.011106353124127E-8
peri 5.452143955569709E-10 -2.120032744945412E-9 -3.280778737599732E-7 -5.891036255956602E-8 7.278139821701896E-8 -5.748281637584057E-8
i -5.832652678521838E-10 2.274621577221278E-9 4.563710267311357E-7 7.011106353124127E-8 -5.748281637584057E-8 7.076857180760165E-8

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 17.1   n/a MPO382694  

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]
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