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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1355028365416173 7.3461e-08  
a 2.53947877214138 1.2178e-08 au
q 2.195372195179 1.8994e-07 au
i 1.145159680842438 6.5852e-06 deg
node 312.0877563777743 0.0002011 deg
peri 22.40555727124406 0.00020175 deg
M 197.7425286678809 1.4488e-05 deg
tp 2459866.719760356620
(2022-Oct-14.21976036)
6.1044e-05 TDB
period 1478.139106688437
4.05
1.0633e-05
2.911e-08
d
yr
n .2435494726924108 1.7519e-09 deg/d
Q 2.883585349103761 1.3829e-08 au
  Orbit Determination Parameters
   # obs. used (total)      553  
   data-arc span      8216 days (22.49 yr)  
   first obs. used      1998-09-16  
   last obs. used      2021-03-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .57694  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 15:35:52  

Additional Information
 Earth MOID = 1.18348 au 
 Jupiter MOID = 2.46073 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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