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JPL Small-Body Database Browser
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39105 (2000 WY18)
Classification: Main-belt Asteroid          SPK-ID: 2039105
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 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1692759056039559 4.216e-08  
a 3.112842396061341 2.6715e-08 au
q 2.585913180465669 1.3657e-07 au
i 18.74822239915651 5.0055e-06 deg
node 79.79999484291677 1.4661e-05 deg
peri 191.3782427469033 2.0632e-05 deg
M 2.043294472389685 1.6771e-05 deg
tp 2458989.114225309458
(2020-May-19.61422531)
9.3392e-05 TDB
period 2006.014768787199
5.49
2.5824e-05
7.07e-08
d
yr
n .1794602939128158 2.3103e-09 deg/d
Q 3.639771611657012 3.1237e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1009  
   data-arc span      8933 days (24.46 yr)  
   first obs. used      1994-11-26  
   last obs. used      2019-05-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52891  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 04:06:27  

Additional Information
 Earth MOID = 1.57228 au 
 Jupiter MOID = 1.46999 au 
 T_jup = 3.115 
[ 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 13.7   n/a MPO474248  
diameter diameter 5.987 km 0.228 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 4.73 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Erasmus, N.; McNeill, A.; Mommert, M.; Trilling, D.E.; et al. (2018) Ap. J. Suppl. Series 237, A19.]
[Erasmus, N.; McNeill, A.; Mommert, N.; Trilling, D.E.; et al. (2019) Ap. J. Suppl. Series 242, A15.]
geometric albedo albedo 0.215   0.034 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

39105 (2000 WY18)          Discovered 2000-Nov-21 by LINEAR at Socorro
Reference: 20020328/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 2000 WY18 = 1994 WN4 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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