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101280 (1998 SD117)
Classification: Main-belt Asteroid          SPK-ID: 2101280
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1547990924945546 4.8767e-08  
a 2.2787608538773 1.0611e-08 au
q 1.926010741684977 1.1422e-07 au
i 3.99723262929085 4.4135e-06 deg
node 284.6108793198889 6.8012e-05 deg
peri 76.71511717342456 6.9541e-05 deg
M 175.6654397042177 1.5345e-05 deg
tp 2458587.401323565249
(2019-Apr-13.90132357)
5.1445e-05 TDB
period 1256.453881242362
3.44
8.7756e-06
2.403e-08
d
yr
n .2865206637302418 2.0012e-09 deg/d
Q 2.631510966069622 1.2253e-08 au
  Orbit Determination Parameters
   # obs. used (total)      701  
   data-arc span      8174 days (22.38 yr)  
   first obs. used      1998-09-26  
   last obs. used      2021-02-11  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .53491  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 15:36:03  

Additional Information
 Earth MOID = .925978 au 
 Jupiter MOID = 2.83237 au 
 T_jup = 3.588 
[ show covariance matrix ]

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 16.16   n/a E2021B55  

101280 (1998 SD117)          Discovered 1998-Sep-26 by LINEAR at Socorro
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
Alternate Designations
 1998 SD117 = 2003 BB13 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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