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11028 (1987 UW)
Classification: Main-belt Asteroid          SPK-ID: 2011028
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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1650840132687635 3.6578e-08  
a 2.62926513405636 1.1813e-08 au
q 2.195215493778703 9.7064e-08 au
i 32.22588820562859 5.3084e-06 deg
node 206.0390149649704 7.8287e-06 deg
peri 158.9139929494869 1.8741e-05 deg
M 255.1047244915431 1.8105e-05 deg
tp 2459454.236198044184
(2021-Aug-27.73619804)
7.9722e-05 TDB
period 1557.220098847416
4.26
1.0495e-05
2.873e-08
d
yr
n .2311811928618542 1.558e-09 deg/d
Q 3.063314774334018 1.3763e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1389  
   data-arc span      14929 days (40.87 yr)  
   first obs. used      1979-12-20  
   last obs. used      2020-11-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51156  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-18 02:44:26  

Additional Information
 Earth MOID = 1.2109 au 
 Jupiter MOID = 2.43238 au 
 T_jup = 3.165 
[ 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 14.07   n/a E2021B10  
diameter diameter 4.358 km 0.709 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.281   0.100 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

11028 (1987 UW)          Discovered 1987-Oct-18 by Mueller, J. at Palomar
Reference: 19990728/Numbers.arcLast Updated: 2004-04-19
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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