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101382 (1998 UN21)
Classification: Main-belt Asteroid          SPK-ID: 2101382
[ 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 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1428740617497884 4.4161e-08  
a 2.338539905499941 1.4423e-08 au
q 2.004423210637198 1.0189e-07 au
i 7.582983651244146 5.9338e-06 deg
node 61.89355187131734 3.6869e-05 deg
peri 262.9877150489914 4.3342e-05 deg
M 56.52310716796852 2.5673e-05 deg
tp 2458795.412528069862
(2019-Nov-07.91252807)		 9.2338e-05 TDB
period 1306.217821243377
3.58		 1.2084e-05
3.308e-08		 d
yr
n .2756048755002586 2.5496e-09 deg/d
Q 2.672656600362683 1.6483e-08 au
   Orbit Determination Parameters
   # obs. used (total)      591  
   data-arc span      7600 days (20.81 yr)  
   first obs. used      1998-09-21  
   last obs. used      2019-07-13  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .63189  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 01:19:18  

Additional Information
 Earth MOID = 1.00952 au 
 Jupiter MOID = 2.6451 au 
 T_jup = 3.540 
[ 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 15.8   n/a MPO436474  

101382 (1998 UN21)          Discovered 1998-Oct-28 by LINEAR at Socorro
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

Alternate Designations
 1998 UN21 = 2002 XC77 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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