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101472 (1998 WL18)
Classification: Main-belt Asteroid          SPK-ID: 2101472
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 .2433487514520448 3.947e-08  
a 2.386471323684193 6.9047e-09 au
q 1.805726506689536 9.3424e-08 au
i 6.264490159759209 4.7427e-06 deg
node 30.43870768733811 3.1724e-05 deg
peri 343.8425962937334 3.2895e-05 deg
M 331.7276542423911 6.8482e-06 deg
tp 2459106.252854744408
(2020-Sep-13.75285474)
2.5624e-05 TDB
period 1346.581851905259
3.69
5.844e-06
1.6e-08
d
yr
n .2673435703077695 1.1602e-09 deg/d
Q 2.967216140678849 8.5849e-09 au
  Orbit Determination Parameters
   # obs. used (total)      817  
   data-arc span      8016 days (21.95 yr)  
   first obs. used      1998-11-17  
   last obs. used      2020-10-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48931  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 20:00:24  

Additional Information
 Earth MOID = .807913 au 
 Jupiter MOID = 2.49579 au 
 T_jup = 3.486 
[ 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 15.9   n/a MPO436474  
diameter diameter 3.624 km 0.035 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.053   0.006 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

101472 (1998 WL18)          Discovered 1998-Nov-21 by LINEAR at Socorro
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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