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15444 (1998 WT23)
Classification: Main-belt Asteroid          SPK-ID: 2015444
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 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1168828643086256 3.3696e-08  
a 2.916408377434808 1.4037e-08 au
q 2.575530212786556 9.7482e-08 au
i 11.65249645399141 4.4801e-06 deg
node 62.54823717437592 1.6394e-05 deg
peri 31.79764840233981 2.3907e-05 deg
M 143.1449200574709 1.801e-05 deg
tp 2458277.156851692338
(2018-Jun-07.65685169)
8.9805e-05 TDB
period 1819.1601440429
4.98
1.3134e-05
3.596e-08
d
yr
n .1978935176096901 1.4287e-09 deg/d
Q 3.257286542083059 1.5678e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2227  
   data-arc span      11022 days (30.18 yr)  
   first obs. used      1990-05-28  
   last obs. used      2020-07-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46218  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 00:59:25  

Additional Information
 Earth MOID = 1.59959 au 
 Jupiter MOID = 2.01188 au 
 T_jup = 3.241 
[ 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 12.6   n/a MPO473975  
diameter diameter 8.858 km 0.279 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.247   0.021 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

15444 (1998 WT23)          Discovered 1998-Nov-25 by LINEAR at Socorro
Reference: 20000621/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1998 WT23 = 1990 KU3 = 1991 OG 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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