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JPL Small-Body Database Browser
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15225 (1985 RJ4)
Classification: Main-belt Asteroid          SPK-ID: 2015225
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .202765688901665 4.1077e-08  
a 3.125604046032175 1.6628e-08 au
q 2.491838788404629 1.2985e-07 au
i 2.248640824346758 4.3861e-06 deg
node 33.51032168595025 0.00011147 deg
peri 314.5767046572097 0.0001119 deg
M 110.2948852437992 9.0589e-06 deg
tp 2458382.124549346738
(2018-Sep-20.62454935)
5.1104e-05 TDB
period 2018.363424043635
5.53
1.6106e-05
4.41e-08
d
yr
n .1783623284644982 1.4233e-09 deg/d
Q 3.75936930365972 1.9999e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1595  
   data-arc span      16543 days (45.29 yr)  
   first obs. used      1974-09-19  
   last obs. used      2020-01-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52634  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-28 23:44:57  

Additional Information
 Earth MOID = 1.48603 au 
 Jupiter MOID = 1.66875 au 
 T_jup = 3.181 
[ 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 13.7   n/a MPO502285  
diameter diameter 10.382 km 0.372 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.086   0.004 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

15225 (1985 RJ4)          Discovered 1985-Sep-11 by Debehogne, H. at La Silla
Reference: 20000621/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1985 RJ4 = 1974 SD1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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