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115821 (2003 UP251)
Classification: Main-belt Asteroid          SPK-ID: 2115821
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03457859988819392 5.2065e-08  
a 2.750877723986893 2.3424e-08 au
q 2.655756223827805 1.437e-07 au
i 6.006027320416917 4.5665e-06 deg
node 120.1411589626203 5.7401e-05 deg
peri 295.1831977558625 9.2069e-05 deg
M 255.2219980017672 7.3655e-05 deg
tp 2459685.534877399758
(2022-Apr-16.03487740)
0.00034228 TDB
period 1666.500148254954
4.56
2.1286e-05
5.828e-08
d
yr
n .2160215829425323 2.7592e-09 deg/d
Q 2.845999224145981 2.4234e-08 au
  Orbit Determination Parameters
   # obs. used (total)      494  
   data-arc span      7437 days (20.36 yr)  
   first obs. used      2000-02-04  
   last obs. used      2020-06-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .63522  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 16:45:19  

Additional Information
 Earth MOID = 1.67371 au 
 Jupiter MOID = 2.27241 au 
 T_jup = 3.337 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.49   n/a E2021B55  
diameter diameter 4.787 km 0.142 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.070   0.012 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

115821 (2003 UP251)          Discovered 2003-Oct-25 by NEAT at Haleakala
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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