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173215 (1998 SG176)
Classification: Main-belt Asteroid          SPK-ID: 2173215
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 4 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2962971455241877 8.647e-08  
a 2.69291686728814 1.5585e-08 au
q 1.895013286376726 2.3813e-07 au
i 2.749302069749939 9.8019e-06 deg
node 188.0008682846161 0.00017543 deg
peri 201.2070239668776 0.00017803 deg
M 314.4250698245789 2.3893e-05 deg
tp 2459204.841396883201
(2020-Dec-21.34139688)
0.00010813 TDB
period 1614.108954085146
4.42
1.4012e-05
3.836e-08
d
yr
n .2230332711362988 1.9361e-09 deg/d
Q 3.490820448199553 2.0202e-08 au
  Orbit Determination Parameters
   # obs. used (total)      116  
   data-arc span      7977 days (21.84 yr)  
   first obs. used      1998-09-25  
   last obs. used      2020-07-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .64593  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 13:03:49  

Additional Information
 Earth MOID = .900461 au 
 Jupiter MOID = 1.95782 au 
 T_jup = 3.305 
[ 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 17.5   n/a MPO254219  

173215 (1998 SG176)          Discovered 1998-Sep-25 by LONEOS at Anderson Mesa
Reference: 20080122/Numbers.arcLast Updated: 2008-01-28

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