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46950 (1998 SA118)
Classification: Main-belt Asteroid          SPK-ID: 2046950
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 .1066913830966974 3.8501e-08  
a 2.689669188834578 1.5601e-08 au
q 2.402704663005245 1.0311e-07 au
i 8.638620515612683 5.2378e-06 deg
node 4.504621659699612 2.9666e-05 deg
peri 67.63815954137124 3.9006e-05 deg
M 281.4203991341306 2.6157e-05 deg
tp 2459352.185163066808
(2021-May-17.68516307)
0.00011811 TDB
period 1611.189892910766
4.41
1.4019e-05
3.838e-08
d
yr
n .2234373499883531 1.9441e-09 deg/d
Q 2.976633714663911 1.7266e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1222  
   data-arc span      8515 days (23.31 yr)  
   first obs. used      1996-03-17  
   last obs. used      2019-07-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50295  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 08:38:16  

Additional Information
 Earth MOID = 1.43242 au 
 Jupiter MOID = 2.29676 au 
 T_jup = 3.348 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456338.5 (2013-Feb-15.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .107799706277569 3.8452e-08  
q 2.39967614066438 1.0324e-07 au
tp 2456120.992549507264
(2012-Jul-12.49254951)
0.00010939 TDB
node 4.736454736716811 2.9602e-05 deg
peri 65.8713065677946 3.8849e-05 deg
i 8.650969788850388 5.2411e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1222  
   data-arc span      8515 days (23.31 yr)  
   first obs. used      1996-03-17  
   last obs. used      2019-07-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50295  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 08:38:16  

Additional Information
 Jupiter MOID = 2.29676 au 
 T_jup = 3.348 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.47859133245733E-15 -3.934291251035471E-15 7.398012113554688E-14 4.520946438265252E-16 6.049039785601954E-15 -2.072906309163457E-15
q -3.934291251035471E-15 1.065861988684058E-14 5.198717926859107E-14 -2.335882136281823E-15 4.477226532813479E-14 6.04191419595491E-15
tp 7.398012113554688E-14 5.198717926859107E-14 1.196689282071196E-8 3.776621294952889E-12 2.77132815538886E-9 -2.921628141126471E-12
node 4.520946438265252E-16 -2.335882136281823E-15 3.776621294952889E-12 8.762573163731955E-10 -8.649694786170462E-10 -2.649849061889072E-11
peri 6.049039785601954E-15 4.477226532813479E-14 2.77132815538886E-9 -8.649694786170462E-10 1.509265143853266E-9 2.553822158811593E-11
i -2.072906309163457E-15 6.04191419595491E-15 -2.921628141126471E-12 -2.649849061889072E-11 2.553822158811593E-11 2.746892934838679E-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 13.6   n/a MPO296485  

46950 (1998 SA118)          Discovered 1998-Sep-26 by LINEAR at Socorro
Reference: 20020921/Numbers.arcLast Updated: 2004-04-19

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