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74366 (1998 WZ39)
Classification: Main-belt Asteroid          SPK-ID: 2074366
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2271896731779993 3.9243e-08  
a 2.568708803907489 1.3676e-08 au
q 1.985124690258297 1.0408e-07 au
i 4.711971557276238 5.3713e-06 deg
node 71.17384782304747 7.8078e-05 deg
peri 193.479604205079 7.9974e-05 deg
M 221.9669075697391 1.9307e-05 deg
tp 2459577.069221684850
(2021-Dec-28.56922168)
8.3381e-05 TDB
period 1503.733026277123
4.12
1.2009e-05
3.288e-08
d
yr
n .239404198557288 1.912e-09 deg/d
Q 3.152292917556681 1.6784e-08 au
  Orbit Determination Parameters
   # obs. used (total)      805  
   data-arc span      10195 days (27.91 yr)  
   first obs. used      1992-02-24  
   last obs. used      2020-01-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54897  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 17:14:50  

Additional Information
 Earth MOID = .969765 au 
 Jupiter MOID = 1.93785 au 
 T_jup = 3.390 
[ 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 15.1   n/a MPO412634  
diameter diameter 2.608 km 0.740 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.216   0.103 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

74366 (1998 WZ39)          Discovered 1998-Nov-22 by Spacewatch at Kitt Peak
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 WZ39 = 1998 XF19 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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