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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1546091365593474 3.1296e-08  
a 2.605389820192833 9.6626e-09 au
q 2.202572749692306 8.2986e-08 au
i 3.096308760046262 3.3735e-06 deg
node 71.71632811862878 8.5482e-05 deg
peri 352.0613832401157 8.71e-05 deg
M 54.28617712425881 1.6255e-05 deg
tp 2458968.870295369551
(2020-Apr-29.37029537)
6.9005e-05 TDB
period 1536.05757642674
4.21
8.5452e-06
2.34e-08
d
yr
n .2343662148638019 1.3038e-09 deg/d
Q 3.008206890693361 1.1157e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1021  
   data-arc span      8220 days (22.51 yr)  
   first obs. used      1998-09-17  
   last obs. used      2021-03-20  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51548  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 07:18:59  

Additional Information
 Earth MOID = 1.21533 au 
 Jupiter MOID = 2.29749 au 
 T_jup = 3.393 
[ 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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