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70424 (1999 SA20)
Classification: Main-belt Asteroid          SPK-ID: 2070424
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1881705102830822 4.8998e-08  
a 2.534115777934635 9.721e-09 au
q 2.057269918884265 1.2579e-07 au
i 7.248904557164104 4.9635e-06 deg
node 125.2040524053104 2.9967e-05 deg
peri 249.2664873112797 3.2437e-05 deg
M 36.059108575032 1.2646e-05 deg
tp 2458852.912154911241
(2020-Jan-04.41215491)
5.155e-05 TDB
period 1473.459171110583
4.03
8.4784e-06
2.321e-08
d
yr
n .2443230237107004 1.4059e-09 deg/d
Q 3.010961636985005 1.155e-08 au
  Orbit Determination Parameters
   # obs. used (total)      989  
   data-arc span      8414 days (23.04 yr)  
   first obs. used      1997-01-09  
   last obs. used      2020-01-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54398  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 16:10:29  

Additional Information
 Earth MOID = 1.07083 au 
 Jupiter MOID = 2.48173 au 
 T_jup = 3.413 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457235.5 (2015-Aug-01.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1901233610424764 4.9431e-08  
q 2.051981286003659 1.2728e-07 au
tp 2457377.190235704282
(2015-Dec-20.69023570)
4.8744e-05 TDB
node 125.3660941241224 3.0002e-05 deg
peri 248.6606983364427 3.2347e-05 deg
i 7.246889026397512 4.9655e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      989  
   data-arc span      8414 days (23.04 yr)  
   first obs. used      1997-01-09  
   last obs. used      2020-01-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54398  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 16:10:29  

Additional Information
 Jupiter MOID = 2.48173 au 
 T_jup = 3.413 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.443438268116003E-15 -6.279761367143031E-15 -1.489088636984029E-12 2.238913014860971E-14 -3.398986453220139E-13 -1.703278538477109E-15
q -6.279761367143031E-15 1.619938505262921E-14 3.821067877363166E-12 -5.718235788228751E-14 8.695289086204338E-13 4.646794812976568E-15
tp -1.489088636984029E-12 3.821067877363166E-12 2.376016915508429E-9 -1.477392945233819E-11 6.018755006947337E-10 4.047567711936242E-12
node 2.238913014860971E-14 -5.718235788228751E-14 -1.477392945233819E-11 9.001187728785991E-10 -8.957062456891058E-10 6.06119011046862E-11
peri -3.398986453220139E-13 8.695289086204338E-13 6.018755006947337E-10 -8.957062456891058E-10 1.046314045462467E-9 -5.920337610720078E-11
i -1.703278538477109E-15 4.646794812976568E-15 4.047567711936242E-12 6.06119011046862E-11 -5.920337610720078E-11 2.465634134334222E-11

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 15.3   n/a MPO417314  

70424 (1999 SA20)          Discovered 1999-Sep-30 by LINEAR at Socorro
Reference: 20031109/Numbers.arcLast Updated: 2004-04-19

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