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20821 Balasridhar (2000 UT5)
Classification: Main-belt Asteroid          SPK-ID: 2020821
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1367942312041709 5.4974e-08  
a 2.329293772550462 9.8108e-09 au
q 2.010659821685759 1.2869e-07 au
i 6.813819527371342 5.7527e-06 deg
node 192.3562266151901 2.8815e-05 deg
peri 173.0682120082195 3.1903e-05 deg
M 221.1003060921942 1.5637e-05 deg
tp 2459501.495255633063
(2021-Oct-13.99525563)
5.8057e-05 TDB
period 1298.478685976189
3.56
8.2036e-06
2.246e-08
d
yr
n .2772475234965863 1.7516e-09 deg/d
Q 2.647927723415165 1.1153e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1027  
   data-arc span      13732 days (37.60 yr)  
   first obs. used      1982-10-20  
   last obs. used      2020-05-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55334  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 02:00:28  

Additional Information
 Earth MOID = 1.00922 au 
 Jupiter MOID = 2.81557 au 
 T_jup = 3.550 
[ 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 15.1   n/a MPO416929  

20821 Balasridhar           Discovered 2000 Oct. 24 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Balaji Sridhar (b. 1987) was awarded second place in the 2004 Intel International Science and Engineering Fair for his environmental science project. He attends the Cherry Creek High School, Englewood, Colorado, U.S.A.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20041226/MPCPages.arcLast Updated: 2004-12-25

Alternate Designations
 2000 UT5 = 1982 UY4 = 1989 SS11 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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