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39806 (1997 WX2)
Classification: Main-belt Asteroid          SPK-ID: 2039806
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03134024053566238 3.7987e-08  
a 2.229751220687559 9.7793e-09 au
q 2.159870281096524 8.2349e-08 au
i 5.292276539910197 3.6386e-06 deg
node 57.00817306845952 4.9633e-05 deg
peri 42.14693289041014 9.5425e-05 deg
M 132.6200633519811 7.9202e-05 deg
tp 2458152.487870083463
(2018-Feb-02.98787008)
0.00026794 TDB
period 1216.138513988607
3.33
8.0006e-06
2.19e-08
d
yr
n .2960189122037563 1.9474e-09 deg/d
Q 2.299632160278594 1.0086e-08 au
  Orbit Determination Parameters
   # obs. used (total)      949  
   data-arc span      7836 days (21.45 yr)  
   first obs. used      1997-11-23  
   last obs. used      2019-05-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54587  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 04:11:18  

Additional Information
 Earth MOID = 1.17957 au 
 Jupiter MOID = 2.72875 au 
 T_jup = 3.637 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.6   n/a MPO474255  
diameter diameter 1.956 km 0.295 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 6.296 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Result based on fragmentary lightcurve(s), may be completely wrong.
Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.350   0.069 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

39806 (1997 WX2)          Discovered 1997-Nov-23 by Kobayashi, T. at Oizumi
Reference: 20020526/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1997 WX2 = 1999 JG75 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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