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190818 (2001 SR2)
Classification: Main-belt Asteroid          SPK-ID: 2190818
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .192859378236295 5.7095e-08  
a 2.278503357062762 1.0099e-08 au
q 1.839072616310327 1.296e-07 au
i 5.442442827099036 6.3087e-06 deg
node 28.90650154668052 5.3312e-05 deg
peri 4.717316322418786 5.5658e-05 deg
M 197.7235969890177 1.9743e-05 deg
tp 2459766.772938793066
(2022-Jul-06.27293879)
7.1788e-05 TDB
period 1256.240920940965
3.44
8.3519e-06
2.287e-08
d
yr
n .2865692352469688 1.9052e-09 deg/d
Q 2.717934097815197 1.2046e-08 au
  Orbit Determination Parameters
   # obs. used (total)      472  
   data-arc span      6811 days (18.65 yr)  
   first obs. used      2001-08-25  
   last obs. used      2020-04-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59352  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-21 05:16:47  

Additional Information
 Earth MOID = .844232 au 
 Jupiter MOID = 2.71957 au 
 T_jup = 3.576 
[ 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 16.51   n/a E2021B55  

190818 (2001 SR2)          Discovered 2001-Sep-17 by Yeung, W. K. Y. at Desert Eagle
Reference: 20080917/Numbers.arcLast Updated: 2008-09-19

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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