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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 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1115631572858885 6.9406e-08  
a 3.06681836402297 3.5528e-08 AU
q 2.724674424510225 2.1389e-07 AU
i 4.865263334399381 7.4945e-06 deg
node 268.475500577027 8.6013e-05 deg
peri 97.52983742168449 9.3373e-05 deg
M 109.1148419013493 3.4987e-05 deg
tp 2456405.917891793175
(2013-Apr-23.41789179)
0.00018957 JED
period 1961.690593365648
5.37
3.4088e-05
9.333e-08
d
yr
n .1835151788041929 3.189e-09 deg/d
Q 3.408962303535716 3.9492e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      721  
   data-arc span      8534 days (23.36 yr)  
   first obs. used      1991-09-14  
   last obs. used      2015-01-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .53572  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Feb-04 13:42:43  

Additional Information
 Earth MOID = 1.72872 AU 
 T_jup = 3.217 
[ 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 (675)
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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