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79652 (1998 SA20)
Classification: Main-belt Asteroid          SPK-ID: 2079652
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1377965146688142 4.5362e-08  
a 2.254568318380229 1.1473e-08 au
q 1.943896662024704 1.0092e-07 au
i 1.166380205455362 6.7888e-06 deg
node 343.8463745024123 0.00020621 deg
peri 300.3762252199409 0.00020815 deg
M 197.1602521623533 3.1608e-05 deg
tp 2459559.808535640561
(2021-Dec-11.30853564)
0.00011023 TDB
period 1236.498308946974
3.39
9.4388e-06
2.584e-08
d
yr
n .2911447572512921 2.2224e-09 deg/d
Q 2.565239974735754 1.3054e-08 au
  Orbit Determination Parameters
   # obs. used (total)      439  
   data-arc span      7811 days (21.39 yr)  
   first obs. used      1998-08-17  
   last obs. used      2020-01-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56457  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-29 12:30:46  

Additional Information
 Earth MOID = .927775 au 
 Jupiter MOID = 2.5644 au 
 T_jup = 3.612 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456527.5 (2013-Aug-23.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1375990565153379 4.5285e-08  
q 1.944656795234833 1.0072e-07 au
tp 2457087.520850473587
(2015-Mar-06.02085047)
0.00010441 TDB
node 343.9360574885415 0.000206 deg
peri 300.324292386506 0.00020796 deg
i 1.167224503211534 6.7895e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      439  
   data-arc span      7811 days (21.39 yr)  
   first obs. used      1998-08-17  
   last obs. used      2020-01-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56457  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-29 12:30:46  

Additional Information
 Jupiter MOID = 2.5644 au 
 T_jup = 3.612 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.050750994614687E-15 -4.539697632775014E-15 2.488060722879709E-12 1.01148200847945E-14 6.263047223496558E-13 -1.225661295927729E-16
q -4.539697632775014E-15 1.014374229894147E-14 -5.364863143912469E-12 -2.381575108143283E-14 -1.359600343347175E-12 2.400897110227971E-16
tp 2.488060722879709E-12 -5.364863143912469E-12 1.090100311258632E-8 1.297706118570681E-11 2.976874837112629E-9 -1.84468319154447E-12
node 1.01148200847945E-14 -2.381575108143283E-14 1.297706118570681E-11 4.243575710872086E-8 -4.242262401825179E-8 2.599675240059833E-10
peri 6.263047223496558E-13 -1.359600343347175E-12 2.976874837112629E-9 -4.242262401825179E-8 4.324620570244758E-8 -2.604443845538932E-10
i -1.225661295927729E-16 2.400897110227971E-16 -1.84468319154447E-12 2.599675240059833E-10 -2.604443845538932E-10 4.609672081537884E-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 16.5   n/a MPO502635  

79652 (1998 SA20)          Discovered 1998-Sep-20 by Spacewatch at Kitt Peak
Reference: 20040504/Numbers.arcLast Updated: 2004-07-16

Alternate Designations
 1998 SA20 = 1999 XX138 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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