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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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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1277039069620498 3.8235e-08  
a 3.14054921083468 1.8727e-08 au
q 2.73948880660451 1.2156e-07 au
i 13.66782747047973 4.3944e-06 deg
node 23.98821512853206 1.5089e-05 deg
peri 351.2345629809666 2.1048e-05 deg
M 229.3613303920149 1.6663e-05 deg
tp 2459938.193708524913
(2022-Dec-24.69370853)
9.7778e-05 TDB
period 2032.857008310624
5.57
1.8183e-05
4.978e-08
d
yr
n .1770906652697489 1.584e-09 deg/d
Q 3.541609615064851 2.1118e-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 = 1.74068 au 
 Jupiter MOID = 1.92192 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 13.08   n/a E2020-QM5  
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

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