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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 2456800.5 (2014-May-23.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1111431189377498 7.1064e-08  
a 3.063663869876338 3.6906e-08 AU
q 2.723158712001385 2.2115e-07 AU
i 4.87146530039409 7.7746e-06 deg
node 268.5090391790254 8.9389e-05 deg
peri 96.95010319685494 9.774e-05 deg
M 72.99799548581353 3.6688e-05 deg
tp 2456403.337228081868
(2013-Apr-20.83722808)
0.00019952 JED
period 1958.664713174404
5.36
3.5392e-05
9.69e-08
d
yr
n .1837986856956997 3.3212e-09 deg/d
Q 3.404169027751291 4.1008e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      696  
   data-arc span      8228 days (22.53 yr)  
   first obs. used      1991-09-14  
   last obs. used      2014-03-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .53725  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-09 21:15:13  

Additional Information
 Earth MOID = 1.72563 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 13.6 mag n/a MPO267766  

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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