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100389 (1995 WU8)
Classification: Main-belt Asteroid          SPK-ID: 2100389
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1502774595298682 5.2194e-08  
a 2.284817485530698 1.0409e-08 au
q 1.941460918315723 1.1716e-07 au
i 6.735444464403452 6.5266e-06 deg
node 62.95594936977525 4.7201e-05 deg
peri 262.8340546072604 5.3404e-05 deg
M 170.1749147596584 2.4833e-05 deg
tp 2458604.194605208213
(2019-Apr-30.69460521)
8.5813e-05 TDB
period 1261.466429574689
3.45
8.6206e-06
2.36e-08
d
yr
n .2853821485533914 1.9502e-09 deg/d
Q 2.628174052745673 1.1974e-08 au
  Orbit Determination Parameters
   # obs. used (total)      463  
   data-arc span      9193 days (25.17 yr)  
   first obs. used      1995-11-24  
   last obs. used      2021-01-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58138  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 19:32:55  

Additional Information
 Earth MOID = .941685 au 
 Jupiter MOID = 2.69319 au 
 T_jup = 3.579 
[ 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 16.4   n/a MPO502722  

100389 (1995 WU8)          Discovered 1995-Nov-24 by Sato, N., Urata, T. at Chichibu
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

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Alternate Designations
 1995 WU8 = 2001 KH4 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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