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136994 (1998 SX56)
Classification: Main-belt Asteroid          SPK-ID: 2136994
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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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 .2441616792891817 5.3738e-08  
a 2.389264636644777 1.0899e-08 au
q 1.805897770695332 1.2626e-07 au
i 3.051544556687582 5.0261e-06 deg
node 24.10471699159538 8.2659e-05 deg
peri 26.18953668373652 8.3286e-05 deg
M 283.9553890550703 1.0479e-05 deg
tp 2459285.444810049099
(2021-Mar-11.94481005)
4.0332e-05 TDB
period 1348.9467608949
3.69
9.2301e-06
2.527e-08
d
yr
n .2668748763377243 1.8261e-09 deg/d
Q 2.972631502594222 1.356e-08 au
  Orbit Determination Parameters
   # obs. used (total)      686  
   data-arc span      7556 days (20.69 yr)  
   first obs. used      1998-09-14  
   last obs. used      2019-05-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5039  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 06:01:31  

Additional Information
 Earth MOID = .816964 au 
 Jupiter MOID = 2.41865 au 
 T_jup = 3.490 
[ 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 15.6   n/a MPO338189  

136994 (1998 SX56)          Discovered 1998-Sep-17 by LONEOS at Anderson Mesa
Reference: 20061205/Numbers.arcLast Updated: 2006-12-13

Alternate Designations
 1998 SX56 = 2000 EP70 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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