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JPL Small-Body Database Browser
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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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1542295385484949 4.6385e-08  
a 2.60454458321977 1.3419e-08 au
q 2.202846874020802 1.2737e-07 au
i 3.096614521770764 4.2922e-06 deg
node 71.71792037883165 9.4127e-05 deg
peri 352.0915302870567 9.5718e-05 deg
M 273.5955685806783 1.7433e-05 deg
tp 2458968.993334545386
(2020-Apr-29.49333455)
7.5569e-05 TDB
period 1535.310148533356
4.20
1.1865e-05
3.248e-08
d
yr
n .2344803102773073 1.8121e-09 deg/d
Q 3.006242292418737 1.5488e-08 au
  Orbit Determination Parameters
   # obs. used (total)      824  
   data-arc span      7711 days (21.11 yr)  
   first obs. used      1998-09-17  
   last obs. used      2019-10-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54001  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 08:51:12  

Additional Information
 Earth MOID = 1.21593 au 
 Jupiter MOID = 2.29878 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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