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16458 (1989 WZ2)
Classification: Main-belt Asteroid          SPK-ID: 2016458
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1275594829498314 3.8215e-08  
a 3.140781276713696 1.8803e-08 au
q 2.740144840997586 1.2147e-07 au
i 13.66714001265261 4.3941e-06 deg
node 23.98778233108358 1.509e-05 deg
peri 351.2705084067971 2.1063e-05 deg
M 193.8927869354242 1.6515e-05 deg
tp 2459938.582334793505
(2022-Dec-25.08233479)
9.7898e-05 TDB
period 2033.082334566494
5.57
1.8257e-05
4.998e-08
d
yr
n .1770710383339007 1.5901e-09 deg/d
Q 3.541417712429807 2.1201e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1765  
   data-arc span      11191 days (30.64 yr)  
   first obs. used      1989-11-21  
   last obs. used      2020-07-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49545  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 02:27:10  

Additional Information
 Earth MOID = 1.74272 au 
 Jupiter MOID = 1.92095 au 
 T_jup = 3.154 
[ 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 13.1   n/a MPO473986  
diameter diameter 13.492 km 0.153 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.081   0.018 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

16458 (1989 WZ2)          Discovered 1989-Nov-21 by Oshima, Y. at Gekko
Reference: 20000913/Numbers.arcLast Updated: 2004-04-19

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Alternate Designations
 1989 WZ2 = 1998 HX87 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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