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15233 (1987 WU4)
Classification: Main-belt Asteroid          SPK-ID: 2015233
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 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1555063198817696 4.3013e-08  
a 2.572372070221348 1.0381e-08 au
q 2.172351956214577 1.0998e-07 au
i 4.725540514006847 4.4185e-06 deg
node 79.3326311851648 4.9498e-05 deg
peri 326.1125267470638 5.1323e-05 deg
M 323.3998087878394 1.191e-05 deg
tp 2459153.707476291060
(2020-Oct-31.20747629)
4.965e-05 TDB
period 1506.950910312625
4.13
9.122e-06
2.497e-08
d
yr
n .2388929841950299 1.4461e-09 deg/d
Q 2.972392184228118 1.1995e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1563  
   data-arc span      12030 days (32.94 yr)  
   first obs. used      1987-11-18  
   last obs. used      2020-10-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47512  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 02:34:57  

Additional Information
 Earth MOID = 1.18386 au 
 Jupiter MOID = 2.40966 au 
 T_jup = 3.407 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456584.5 (2013-Oct-19.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1577399195401485 4.3357e-08  
q 2.165930282902544 1.1109e-07 au
tp 2456135.635883642558
(2012-Jul-27.13588364)
5.4497e-05 TDB
node 79.36767221282295 4.9534e-05 deg
peri 325.3262744670118 5.1275e-05 deg
i 4.72604779140906 4.42e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1563  
   data-arc span      12030 days (32.94 yr)  
   first obs. used      1987-11-18  
   last obs. used      2020-10-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47512  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 02:34:57  

Additional Information
 Jupiter MOID = 2.40966 au 
 T_jup = 3.407 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.879800895296615E-15 -4.802256077484934E-15 2.078074567950925E-14 -1.074622783255076E-14 -1.25632822595823E-14 -9.528360474131394E-16
q -4.802256077484934E-15 1.234054409752712E-14 -2.810690517330794E-13 2.719552885984163E-14 -1.726848389362162E-14 2.327734853913887E-15
tp 2.078074567950925E-14 -2.810690517330794E-13 2.969939459447246E-9 -9.63628794086527E-12 7.379913013858757E-10 8.856805450008579E-14
node -1.074622783255076E-14 2.719552885984163E-14 -9.63628794086527E-12 2.453658502638228E-9 -2.446910898037039E-9 -5.321367717291579E-11
peri -1.25632822595823E-14 -1.726848389362162E-14 7.379913013858757E-10 -2.446910898037039E-9 2.629093425166273E-9 5.306056222261184E-11
i -9.528360474131394E-16 2.327734853913887E-15 8.856805450008579E-14 -5.321367717291579E-11 5.306056222261184E-11 1.953627439393162E-11

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 14.0   n/a MPO452385  
diameter diameter 3.781 km 0.366 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.409   0.033 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

15233 (1987 WU4)          Discovered 1987-Nov-26 by Mrkos, A. at Klet
Reference: 20000621/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1987 WU4 = 1998 KE64 = 1999 RX172 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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