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JPL Small-Body Database Browser
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115488 (2003 UL21)
Classification: Main-belt Asteroid          SPK-ID: 2115488
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1436192461835222 3.904e-08  
a 3.175445942493319 2.6852e-08 au
q 2.719390789935904 1.2253e-07 au
i 22.3474988525915 7.3008e-06 deg
node 23.2673096786437 1.3366e-05 deg
peri 249.4190647189848 3.0144e-05 deg
M 103.662080145189 2.6805e-05 deg
tp 2458405.354805369169
(2018-Oct-13.85480537)
0.00015379 TDB
period 2066.833597850029
5.66
2.6216e-05
7.178e-08
d
yr
n .1741794793613191 2.2093e-09 deg/d
Q 3.631501095050734 3.0708e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1002  
   data-arc span      7239 days (19.82 yr)  
   first obs. used      2000-01-29  
   last obs. used      2019-11-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52663  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-04 10:49:57  

Additional Information
 Earth MOID = 1.79325 au 
 Jupiter MOID = 1.6513 au 
 T_jup = 3.069 
[ 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 13.5   n/a MPO453623  
diameter diameter 9.157 km 0.233 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.133   0.017 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

115488 (2003 UL21)          Discovered 2003-Oct-18 by NEAT at Palomar
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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