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101240 (1998 SG81)
Classification: Main-belt Asteroid          SPK-ID: 2101240
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 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1353561442750061 7.3555e-08  
a 2.539773507199139 1.22e-08 au
q 2.195999557932855 1.9013e-07 au
i 1.14518806423847 6.6314e-06 deg
node 312.0880296672275 0.0002011 deg
peri 22.37079907775929 0.00020176 deg
M 149.0838344057816 1.4501e-05 deg
tp 2458388.263858436251
(2018-Sep-26.76385844)
5.8582e-05 TDB
period 1478.396446143475
4.05
1.0652e-05
2.916e-08
d
yr
n .2435070788617567 1.7545e-09 deg/d
Q 2.883547456465424 1.3851e-08 au
  Orbit Determination Parameters
   # obs. used (total)      544  
   data-arc span      7762 days (21.25 yr)  
   first obs. used      1998-09-16  
   last obs. used      2019-12-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .57827  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 20:01:39  

Additional Information
 Earth MOID = 1.18601 au 
 Jupiter MOID = 2.46071 au 
 T_jup = 3.433 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.3   n/a MPO351569  

101240 (1998 SG81)          Discovered 1998-Sep-26 by LINEAR at Socorro
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

Alternate Designations
 1998 SG81 = 2000 CY113 = 2002 RO15 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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