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66123 (1998 SD87)
Classification: Main-belt Asteroid          SPK-ID: 2066123
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04144492629017975 4.1592e-08  
a 3.126446286533568 2.3182e-08 au
q 2.996870950637978 1.3657e-07 au
i 8.412371355480275 4.3514e-06 deg
node 232.8780761726229 3.3548e-05 deg
peri 171.0797308841344 8.1144e-05 deg
M 333.2825228939208 7.0858e-05 deg
tp 2459350.353823932774
(2021-May-15.85382393)
0.00039712 TDB
period 2019.179296069222
5.53
2.2457e-05
6.148e-08
d
yr
n .1782902591665928 1.9829e-09 deg/d
Q 3.256021622429157 2.4142e-08 au
  Orbit Determination Parameters
   # obs. used (total)      990  
   data-arc span      8174 days (22.38 yr)  
   first obs. used      1998-09-26  
   last obs. used      2021-02-11  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .48902  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 12:19:39  

Additional Information
 Earth MOID = 2.00533 au 
 Jupiter MOID = 1.98632 au 
 T_jup = 3.197 
[ 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 14.48   n/a E2021B10  

66123 (1998 SD87)          Discovered 1998-Sep-26 by LINEAR at Socorro
Reference: 20030910/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1998 SD87 = 2000 AQ109 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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