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52986 (1998 UE21)
Classification: Main-belt Asteroid          SPK-ID: 2052986
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 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1382625754501806 2.9462e-08  
a 2.302263534161417 6.1525e-09 au
q 1.983946648563224 6.7643e-08 au
i .2547885151119048 3.4556e-06 deg
node 229.2257243339034 0.00070741 deg
peri 130.9101329507027 0.00070752 deg
M 156.8977588999336 1.2934e-05 deg
tp 2458644.409829638402
(2019-Jun-09.90982964)
4.532e-05 TDB
period 1275.942134124773
3.49
5.1147e-06
1.4e-08
d
yr
n .2821444565328508 1.131e-09 deg/d
Q 2.620580419759609 7.0032e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1741  
   data-arc span      8241 days (22.56 yr)  
   first obs. used      1998-08-31  
   last obs. used      2021-03-24  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .53625  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 06:20:45  

Additional Information
 Earth MOID = .978894 au 
 Jupiter MOID = 2.82224 au 
 T_jup = 3.578 
[ 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 15.21   n/a E2021B10  

52986 (1998 UE21)          Discovered 1998-Oct-29 by Korlevic, K. at Visnjan
Reference: 20030216/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1998 UE21 = 2000 EH133 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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