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JPL Small-Body Database Browser
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160557 (1998 RT18)
Classification: Main-belt Asteroid          SPK-ID: 2160557
[ 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 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1615222802985116 6.9434e-08  
a 2.744468649550349 2.289e-08 au
q 2.301175815067199 1.9818e-07 au
i 12.73387230024174 7.6402e-06 deg
node 346.2860274295236 2.4792e-05 deg
peri 352.3090728228401 3.0028e-05 deg
M 192.1379620338096 1.9955e-05 deg
tp 2459374.847371997887
(2021-Jun-09.34737200)		 9.7542e-05 TDB
period 1660.679551474207
4.55		 2.0776e-05
5.688e-08		 d
yr
n .2167787275277902 2.712e-09 deg/d
Q 3.187761484033498 2.6587e-08 au
   Orbit Determination Parameters
   # obs. used (total)      430  
   data-arc span      7535 days (20.63 yr)  
   first obs. used      1998-08-17  
   last obs. used      2019-04-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58471  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 12:19:23  

Additional Information
 Earth MOID = 1.29239 au 
 Jupiter MOID = 2.21173 au 
 T_jup = 3.294 
[ 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 15.1   n/a MPO245194  

160557 (1998 RT18)          Discovered 1998-Sep-14 by LINEAR at Socorro
Reference: 20070828/Numbers.arcLast Updated: 2007-08-30

Alternate Designations
 1998 RT18 = 1999 XO264 = 2003 UG25 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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