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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 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1144816446839043 6.3243e-08  
a 3.061326035789871 3.2277e-08 au
q 2.71086039629899 1.9654e-07 au
i 4.857278919783417 5.9847e-06 deg
node 268.1194901104478 7.86e-05 deg
peri 98.46287421641695 8.3216e-05 deg
M 218.5513054743601 3.0763e-05 deg
tp 2458369.204188198164
(2018-Sep-07.70418820)
0.00017317 JED
period 1956.423201213615
5.36
3.0942e-05
8.471e-08
d
yr
n .1840092674103862 2.9102e-09 deg/d
Q 3.411791675280753 3.5972e-08 au
  Orbit Determination Parameters
   # obs. used (total)      921  
   data-arc span      8981 days (24.59 yr)  
   first obs. used      1991-09-14  
   last obs. used      2016-04-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .51474  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Apr-25 13:21:41  

Additional Information
 Earth MOID = 1.71386 au 
 Jupiter MOID = 2.08512 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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