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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2272818975411096 3.9845e-08  
a 2.568462609320912 1.3841e-08 au
q 1.984697553711066 1.055e-07 au
i 4.712621388602153 5.5201e-06 deg
node 71.17569800469791 8.1526e-05 deg
peri 193.4149847795182 8.3457e-05 deg
M 126.2945099698593 1.9284e-05 deg
tp 2458073.039101803767
(2017-Nov-15.53910180)
7.8421e-05 TDB
period 1503.516846424764
4.12
1.2153e-05
3.327e-08
d
yr
n .239438620761749 1.9355e-09 deg/d
Q 3.152227664930758 1.6987e-08 au
  Orbit Determination Parameters
   # obs. used (total)      788  
   data-arc span      9733 days (26.65 yr)  
   first obs. used      1992-02-24  
   last obs. used      2018-10-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54839  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Oct-30 19:16:55  

Additional Information
 Earth MOID = .968956 au 
 Jupiter MOID = 1.93702 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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