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186987 (2004 SD58)
Classification: Main-belt Asteroid          SPK-ID: 2186987
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 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1339025837056318 4.8089e-08  
a 3.131210223964852 2.377e-08 au
q 2.711933084850469 1.6041e-07 au
i 6.193865863677542 4.5104e-06 deg
node 182.5878081304353 3.2833e-05 deg
peri 167.6504946515158 3.6794e-05 deg
M .07634259663524524 1.4009e-05 deg
tp 2459200.070828184671
(2020-Dec-16.57082818)
7.8753e-05 TDB
period 2023.796154808759
5.54
2.3045e-05
6.309e-08
d
yr
n .1778835280147169 2.0256e-09 deg/d
Q 3.550487363079236 2.6953e-08 au
  Orbit Determination Parameters
   # obs. used (total)      548  
   data-arc span      8576 days (23.48 yr)  
   first obs. used      1997-06-11  
   last obs. used      2020-12-03  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .56055  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:53:32  

Additional Information
 Earth MOID = 1.70477 au 
 Jupiter MOID = 1.8957 au 
 T_jup = 3.190 
[ 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 15.55   n/a MPCxxxxx  

186987 (2004 SD58)          Discovered 2004-Sep-16 by LONEOS at Anderson Mesa
Reference: 20080520/Numbers.arcLast Updated: 2008-05-22

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