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JPL Small-Body Database Browser
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15731 (1990 UW2)
Classification: Main-belt Asteroid          SPK-ID: 2015731
[ 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 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1145176050729957 4.1214e-08  
a 3.19050722829938 2.113e-08 au
q 2.825137981546453 1.2829e-07 au
i 7.102955637819719 4.1897e-06 deg
node 82.38542981525228 3.6255e-05 deg
peri 240.038996370121 4.1211e-05 deg
M 136.8734010103281 2.0683e-05 deg
tp 2458209.084441029819
(2018-Mar-31.58444103)		 0.00011875 TDB
period 2081.555650157087
5.70		 2.0679e-05
5.662e-08		 d
yr
n .1729475740765481 1.7181e-09 deg/d
Q 3.555876475052306 2.355e-08 au
   Orbit Determination Parameters
   # obs. used (total)      1759  
   data-arc span      10701 days (29.30 yr)  
   first obs. used      1990-10-16  
   last obs. used      2020-02-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48175  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 21:26:12  

Additional Information
 Earth MOID = 1.82107 au 
 Jupiter MOID = 1.74851 au 
 T_jup = 3.175 
[ 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 13.2   n/a MPO452393  
diameter diameter 12.342 km 0.233 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.051   0.010 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

15731 (1990 UW2)          Discovered 1990-Oct-16 by Oak Ridge Observatory at Harvard
Reference: 20000726/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1990 UW2 = 1999 FF25 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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