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101172 (1998 SF4)
Classification: Main-belt Asteroid          SPK-ID: 2101172
[ 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 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1510235002962284 4.3534e-08  
a 2.625660889892184 1.2105e-08 au
q 2.229124391709756 1.1553e-07 au
i 4.221607563627765 5.1645e-06 deg
node 2.977368261171196 4.5737e-05 deg
peri 329.7806961671819 4.866e-05 deg
M 109.5703970351192 1.395e-05 deg
tp 2458727.515276241656
(2019-Sep-01.01527624)		 6.0493e-05 TDB
period 1554.019198255053
4.25		 1.0746e-05
2.942e-08		 d
yr
n .2316573697443569 1.602e-09 deg/d
Q 3.022197388074611 1.3933e-08 au
   Orbit Determination Parameters
   # obs. used (total)      548  
   data-arc span      8179 days (22.39 yr)  
   first obs. used      1998-08-27  
   last obs. used      2021-01-17  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .57476  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 15:35:32  

Additional Information
 Earth MOID = 1.21828 au 
 Jupiter MOID = 2.33777 au 
 T_jup = 3.382 
[ 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 16.0   n/a MPO493568  

101172 (1998 SF4)          Discovered 1998-Sep-19 by Comba, P. G. at Prescott
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

Alternate Designations
 1998 SF4 = 2002 PB99 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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