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136998 (1998 SG75)
Classification: Main-belt Asteroid          SPK-ID: 2136998
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .170163639948623 7.221e-08  
a 2.521375559871285 9.9803e-09 au
q 2.09232911692609 1.8236e-07 au
i 3.498613770929164 3.9006e-06 deg
node 127.9756774607643 8.9534e-05 deg
peri 244.5401558973502 9.0077e-05 deg
M 151.9052887456811 1.039e-05 deg
tp 2458383.443219504829
(2018-Sep-21.94321950)
4.0597e-05 TDB
period 1462.361467546847
4.00
8.6827e-06
2.377e-08
d
yr
n .2461771648044791 1.4617e-09 deg/d
Q 2.95042200281648 1.1679e-08 au
  Orbit Determination Parameters
   # obs. used (total)      554  
   data-arc span      10773 days (29.49 yr)  
   first obs. used      1990-10-19  
   last obs. used      2020-04-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55875  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 22:42:24  

Additional Information
 Earth MOID = 1.09532 au 
 Jupiter MOID = 2.51589 au 
 T_jup = 3.433 
[ 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 16.3   n/a MPO412867  

136998 (1998 SG75)          Discovered 1998-Sep-21 by Elst, E. W. at La Silla
Reference: 20061205/Numbers.arcLast Updated: 2006-12-13

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