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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .15447212079673 4.4043e-08  
a 2.605069693668076 1.2778e-08 au
q 2.20265905326388 1.2082e-07 au
i 3.09650549961279 4.1747e-06 deg
node 71.71892574149651 9.2396e-05 deg
peri 352.0706516338897 9.399e-05 deg
M 7.408171456465819 1.7316e-05 deg
tp 2458968.896442593239
(2020-Apr-29.39644259)
7.3776e-05 TDB
period 1535.774480017477
4.20
1.13e-05
3.094e-08
d
yr
n .2344094166715827 1.7247e-09 deg/d
Q 3.007480334072271 1.4752e-08 au
  Orbit Determination Parameters
   # obs. used (total)      860  
   data-arc span      8072 days (22.10 yr)  
   first obs. used      1998-09-17  
   last obs. used      2020-10-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5414  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 21:44:26  

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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