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15285 (1991 RW18)
Classification: Main-belt Asteroid          SPK-ID: 2015285
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .113686483429001 6.8189e-08  
a 3.063667484975747 3.4747e-08 au
q 2.715369902213083 2.083e-07 au
i 4.855086033352118 6.9126e-06 deg
node 268.1823969638021 8.2327e-05 deg
peri 98.25390840412088 8.8296e-05 deg
M 181.922260562021 3.2912e-05 deg
tp 2458369.375560559835
(2018-Sep-07.87556056)
0.00018416 JED
period 1958.668179988994
5.36
3.3322e-05
9.123e-08
d
yr
n .1837983603746618 3.1268e-09 deg/d
Q 3.411965067738412 3.8697e-08 au
  Orbit Determination Parameters
   # obs. used (total)      839  
   data-arc span      8669 days (23.73 yr)  
   first obs. used      1991-09-14  
   last obs. used      2015-06-09  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .52193  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jul-06 12:16:07  

Additional Information
 Earth MOID = 1.71764 au 
 Jupiter MOID = 2.08343 au 
 T_jup = 3.218 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.7 mag n/a MPO319275  

15285 (1991 RW18)          Discovered 1991-Sep-14 by Holt, H. E. at Palomar
Reference: 20000621/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1991 RW18 = 1997 WL33 = 1999 CN66 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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