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15688 (1981 UW23)
Classification: Main-belt Asteroid          SPK-ID: 2015688
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 57 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2022361590797985 3.4302e-08  
a 2.593032392253666 1.0415e-08 au
q 2.068627480874783 9.0441e-08 au
i 13.94444284024232 3.5744e-06 deg
node 59.64705926582023 1.5831e-05 deg
peri 283.4243527213432 1.7925e-05 deg
M 130.8460590080865 9.7668e-06 deg
tp 2458446.169868930531
(2018-Nov-23.66986893)
4.0215e-05 TDB
period 1525.142206787257
4.18
9.1883e-06
2.516e-08
d
yr
n .2360435626251189 1.4221e-09 deg/d
Q 3.11743730363255 1.2521e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2293  
   data-arc span      13982 days (38.28 yr)  
   first obs. used      1981-10-24  
   last obs. used      2020-02-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4531  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 21:25:14  

Additional Information
 Earth MOID = 1.11428 au 
 Jupiter MOID = 2.46854 au 
 T_jup = 3.349 
[ 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 12.8   n/a MPO449065  
diameter diameter 7.457 km 0.082 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
geometric albedo albedo 0.363   0.047 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

15688 (1981 UW23)          Discovered 1981-Oct-24 by Bus, S. J. at Palomar
Reference: 20000726/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1981 UW23 = 1981 WS3 = 2000 ES103 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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