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118326 (1998 YR20)
Classification: Main-belt Asteroid          SPK-ID: 2118326
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 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1416248315207474 4.9828e-08  
a 2.432193176339585 1.3127e-08 au
q 2.08773422751458 1.2047e-07 au
i 2.402797896089971 5.2219e-06 deg
node 72.90338238582196 0.00012847 deg
peri 41.41314618988017 0.00012972 deg
M 229.1981393243623 1.7228e-05 deg
tp 2459503.892738595606
(2021-Oct-16.39273860)
6.684e-05 TDB
period 1385.464892917775
3.79
1.1217e-05
3.071e-08
d
yr
n .2598405790289234 2.1037e-09 deg/d
Q 2.77665212516459 1.4987e-08 au
  Orbit Determination Parameters
   # obs. used (total)      369  
   data-arc span      7887 days (21.59 yr)  
   first obs. used      1998-12-25  
   last obs. used      2020-07-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55929  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 10:02:45  

Additional Information
 Earth MOID = 1.10492 au 
 Jupiter MOID = 2.31415 au 
 T_jup = 3.492 
[ 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 16.6   n/a MPO436568  

118326 (1998 YR20)          Discovered 1998-Dec-25 by Spacewatch at Kitt Peak
Reference: 20051116/Numbers.arcLast Updated: 2005-11-21

Alternate Designations
 1998 YR20 = 2003 CW7 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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