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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1937694856366137 5.1125e-08  
a 2.698874866591831 1.2735e-08 au
q 2.175915271894748 1.3748e-07 au
i 10.82457391004151 4.4991e-06 deg
node 297.4265774756554 2.8436e-05 deg
peri 93.52111055191847 3.1003e-05 deg
M 307.4677161946178 1.1389e-05 deg
tp 2459632.817743666150
(2022-Feb-22.31774367)
5.173e-05 TDB
period 1619.468668733145
4.43
1.1463e-05
3.138e-08
d
yr
n .2222951310824777 1.5734e-09 deg/d
Q 3.221834461288914 1.5203e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1265  
   data-arc span      11254 days (30.81 yr)  
   first obs. used      1990-09-14  
   last obs. used      2021-07-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50109  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-09 13:52:23  

Additional Information
 Earth MOID = 1.21304 au 
 Jupiter MOID = 2.35301 au 
 T_jup = 3.316 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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)  
rotation period rot_per 4.83468 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]
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

Alternate Designations
 1995 WU4 = 1990 RK9 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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