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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 38 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1161277730542304 1.372e-08  
a 2.918418997761218 1.3457e-08 au
q 2.579509498712048 4.3538e-08 au
i 11.64581514052304 8.5703e-07 deg
node 62.53518858514022 1.701e-06 deg
peri 31.89069559494096 9.7156e-06 deg
M 182.6264836275751 1.2115e-05 deg
tp 2460097.734919545065
(2023-Jun-02.23491955)
6.4096e-05 TDB
period 1821.041707027006
4.99
1.2595e-05
3.448e-08
d
yr
n .1976890472144805 1.3673e-09 deg/d
Q 3.257328496810387 1.502e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2316  
   data-arc span      11068 days (30.30 yr)  
   first obs. used      1990-05-28  
   last obs. used      2020-09-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .46105  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 00:58:40  

Additional Information
 Earth MOID = 1.6033 au 
 Jupiter MOID = 2.01163 au 
 T_jup = 3.240 
[ 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 12.63   n/a E2021B10  
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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