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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1616889283026372 6.7816e-08  
a 2.744899481945243 2.2489e-08 au
q 2.301079626411053 1.946e-07 au
i 12.73382736182323 7.4022e-06 deg
node 346.28219145 2.4455e-05 deg
peri 352.2115488870685 2.9725e-05 deg
M 278.9788465735934 2.0507e-05 deg
tp 2459374.338491456324
(2021-Jun-08.83849146)		 9.7315e-05 TDB
period 1661.070612213888
4.55		 2.0413e-05
5.589e-08		 d
yr
n .2167276919794451 2.6634e-09 deg/d
Q 3.188719337479434 2.6125e-08 au
   Orbit Determination Parameters
   # obs. used (total)      437  
   data-arc span      7834 days (21.45 yr)  
   first obs. used      1998-08-17  
   last obs. used      2020-01-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58483  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 13:21:44  

Additional Information
 Earth MOID = 1.2932 au 
 Jupiter MOID = 2.21408 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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