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74244 (1998 SS57)
Classification: Main-belt Asteroid          SPK-ID: 2074244
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 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1544721180894578 4.6174e-08  
a 2.605069694523096 1.3304e-08 au
q 2.202659061039456 1.2704e-07 au
i 3.096505327327273 4.2338e-06 deg
node 71.71893040886371 9.3863e-05 deg
peri 352.0706474184483 9.5451e-05 deg
M 7.408170694332745 1.7695e-05 deg
tp 2458968.896445828970
(2020-Apr-29.39644583)
7.538e-05 TDB
period 1535.774480773571
4.20
1.1765e-05
3.221e-08
d
yr
n .234409416556178 1.7957e-09 deg/d
Q 3.007480328006736 1.5359e-08 au
  Orbit Determination Parameters
   # obs. used (total)      843  
   data-arc span      7794 days (21.34 yr)  
   first obs. used      1998-09-17  
   last obs. used      2020-01-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53902  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 17:13:17  

Additional Information
 Earth MOID = 1.21605 au 
 Jupiter MOID = 2.29766 au 
 T_jup = 3.394 
[ 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 15.3   n/a MPO347991  

74244 (1998 SS57)          Discovered 1998-Sep-17 by LONEOS at Anderson Mesa
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1998 SS57 = 2000 CH86 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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