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JPL Small-Body Database Browser
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74243 (1998 SR55)
Classification: Main-belt Asteroid          SPK-ID: 2074243
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09465815308873139 4.1409e-08  
a 2.706652446913961 1.4847e-08 au
q 2.45044572523599 1.1438e-07 au
i 2.535047454157804 4.8261e-06 deg
node 29.81064337869977 9.5812e-05 deg
peri 297.523037076629 9.8851e-05 deg
M 251.1720904373663 2.6202e-05 deg
tp 2459092.182727986932
(2020-Aug-30.68272799)
0.00011984 TDB
period 1626.47415342866
4.45
1.3382e-05
3.664e-08
d
yr
n .2213376703473021 1.8211e-09 deg/d
Q 2.962859168591931 1.6252e-08 au
  Orbit Determination Parameters
   # obs. used (total)      854  
   data-arc span      7543 days (20.65 yr)  
   first obs. used      1998-09-14  
   last obs. used      2019-05-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59204  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 05:41:17  

Additional Information
 Earth MOID = 1.43933 au 
 Jupiter MOID = 2.31382 au 
 T_jup = 3.357 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.1   n/a MPO436302  

74243 (1998 SR55)          Discovered 1998-Sep-16 by LONEOS at Anderson Mesa
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 SR55 = 2000 AE27 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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