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JPL Small-Body Database Browser
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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 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1156733198387624 5.027e-08  
a 3.061401056189849 1.8877e-08 au
q 2.707278632662475 1.529e-07 au
i 4.859251679848732 4.1578e-06 deg
node 268.0940136292289 5.9434e-05 deg
peri 98.57676927250861 6.199e-05 deg
M 116.1349352268848 1.8186e-05 deg
tp 2458369.340461865634
(2018-Sep-07.84046187)		 9.8044e-05 TDB
period 1956.495117377666
5.36		 1.8096e-05
4.954e-08		 d
yr
n .1840025036620158 1.7019e-09 deg/d
Q 3.415523479717223 2.1061e-08 au
   Orbit Determination Parameters
   # obs. used (total)      1467  
   data-arc span      10370 days (28.39 yr)  
   first obs. used      1991-09-14  
   last obs. used      2020-02-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47987  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 21:15:17  

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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