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

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1156733232069094 4.9551e-08  
a 3.06140105477017 1.8653e-08 au
q 2.707278621095767 1.5022e-07 au
i 4.859251533390021 4.1229e-06 deg
node 268.0940146664331 5.7922e-05 deg
peri 98.57676914982353 6.0531e-05 deg
M 116.1349347405766 1.8176e-05 deg
tp 2458369.340464947614
(2018-Sep-07.84046495)
9.7965e-05 TDB
period 1956.495116016723
5.36
1.7881e-05
4.896e-08
d
yr
n .1840025037900084 1.6816e-09 deg/d
Q 3.415523488444574 2.081e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1498  
   data-arc span      10630 days (29.10 yr)  
   first obs. used      1991-09-14  
   last obs. used      2020-10-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4778  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 02:34:37  

Additional Information
 Earth MOID = 1.71146 au 
 Jupiter MOID = 2.09259 au 
 T_jup = 3.218 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.8   n/a MPO458967  
diameter diameter 10.295 km 0.326 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.080   0.008 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

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 | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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