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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 ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1937694797156219 4.2921e-08  
a 2.698874865454742 1.1684e-08 au
q 2.175915286958007 1.178e-07 au
i 10.82457496158895 4.3914e-06 deg
node 297.4265641509923 2.5222e-05 deg
peri 93.52112383181328 2.819e-05 deg
M 307.467716672046 1.1213e-05 deg
tp 2459632.817741369080
(2022-Feb-22.31774137)
5.0822e-05 TDB
period 1619.468667709673
4.43
1.0516e-05
2.879e-08
d
yr
n .2222951312229637 1.4435e-09 deg/d
Q 3.221834443951476 1.3948e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1340  
   data-arc span      11286 days (30.90 yr)  
   first obs. used      1990-09-14  
   last obs. used      2021-08-08  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .49185  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-24 20:36:23  

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 14.13   n/a MPO636241  
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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