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JPL Small-Body Database Browser
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173212 (1998 SX99)
Classification: Main-belt Asteroid          SPK-ID: 2173212
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2308220683724833 4.0171e-08  
a 2.563881086631344 1.7643e-08 au
q 1.972080751154007 9.7559e-08 au
i 3.271394343327657 7.9874e-06 deg
node 270.4419481546864 0.00013061 deg
peri 143.2357524834797 0.00013382 deg
M 335.6964979629989 3.2564e-05 deg
tp 2458701.730551357029
(2019-Aug-06.23055136)
0.00013641 TDB
period 1499.495769500516
4.11
1.5478e-05
4.238e-08
d
yr
n .2400807040088658 2.4781e-09 deg/d
Q 3.15568142210868 2.1715e-08 au
  Orbit Determination Parameters
   # obs. used (total)      338  
   data-arc span      7228 days (19.79 yr)  
   first obs. used      1998-09-25  
   last obs. used      2018-07-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .66958  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 05:19:04  

Additional Information
 Earth MOID = .984249 au 
 Jupiter MOID = 2.21858 au 
 T_jup = 3.393 
[ 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 16.5   n/a MPO454189  

173212 (1998 SX99)          Discovered 1998-Sep-26 by LINEAR at Socorro
Reference: 20080122/Numbers.arcLast Updated: 2008-01-28

Alternate Designations
 1998 SX99 = 2002 RK142 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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