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JPL Small-Body Database Browser
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74225 (1998 SR9)
Classification: Main-belt Asteroid          SPK-ID: 2074225
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 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1075242835345271 4.8381e-08  
a 2.750849892442915 1.706e-08 au
q 2.45506672864696 1.3758e-07 au
i 4.304898772011095 4.2267e-06 deg
node 93.54452401521735 8.2189e-05 deg
peri 240.0205133821746 8.5653e-05 deg
M 213.3985181291363 2.5011e-05 deg
tp 2459279.132454478563
(2021-Mar-05.63245448)
0.00011687 TDB
period 1666.474857515322
4.56
1.5503e-05
4.244e-08
d
yr
n .2160248613271923 2.0096e-09 deg/d
Q 3.046633056238871 1.8894e-08 au
  Orbit Determination Parameters
   # obs. used (total)      467  
   data-arc span      9857 days (26.99 yr)  
   first obs. used      1992-04-28  
   last obs. used      2019-04-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .66107  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 06:36:52  

Additional Information
 Earth MOID = 1.44724 au 
 Jupiter MOID = 2.27249 au 
 T_jup = 3.333 
[ 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 15.6   n/a MPO432295  

74225 (1998 SR9)          Discovered 1998-Sep-17 by BAO Schmidt CCD Asteroid Program at Xinglong
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 SR9 = 2000 AG213 = 2000 AP255 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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