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11608 (1995 WU4)
Classification: Main-belt Asteroid          SPK-ID: 2011608
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 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1945031680207761 5.444e-08  
a 2.696107750195072 1.3006e-08 au
q 2.171706251456763 1.4546e-07 au
i 10.82895939892644 4.5389e-06 deg
node 297.4273199698932 2.9479e-05 deg
peri 93.84538777808294 3.2021e-05 deg
M 219.0900799625187 1.1321e-05 deg
tp 2459633.412046388474
(2022-Feb-22.91204639)
5.2032e-05 TDB
period 1616.978681410394
4.43
1.17e-05
3.203e-08
d
yr
n .2226374436093329 1.611e-09 deg/d
Q 3.22050924893338 1.5536e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1175  
   data-arc span      10869 days (29.76 yr)  
   first obs. used      1990-09-14  
   last obs. used      2020-06-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49692  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 17:17:27  

Additional Information
 Earth MOID = 1.20963 au 
 Jupiter MOID = 2.35085 au 
 T_jup = 3.317 
[ 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 14.1   n/a MPO279638  
diameter diameter 3.973 km 0.767 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.308   0.108 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

11608 (1995 WU4)          Discovered 1995-Nov-18 by Shimizu, Y., Urata, T. at Nachi-Katsuura
Reference: 19990928/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1995 WU4 = 1990 RK9 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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