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101388 (1998 UA31)
Classification: Main-belt Asteroid          SPK-ID: 2101388
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 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .200097261381973 4.0443e-08  
a 2.421058907847244 1.2655e-08 au
q 1.93661165074258 9.9433e-08 au
i 24.21517502169476 4.6663e-06 deg
node 89.83581550074305 1.0768e-05 deg
peri 202.1228007426153 1.658e-05 deg
M 33.07178221420859 1.593e-05 deg
tp 2459074.095783714825
(2020-Aug-12.59578371)
6.0391e-05 TDB
period 1375.962068446154
3.77
1.0789e-05
2.954e-08
d
yr
n .2616351193507396 2.0514e-09 deg/d
Q 2.905506164951907 1.5188e-08 au
  Orbit Determination Parameters
   # obs. used (total)      594  
   data-arc span      13458 days (36.85 yr)  
   first obs. used      1983-10-06  
   last obs. used      2020-08-10  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .54416  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 15:36:33  

Additional Information
 Earth MOID = .930882 au 
 Jupiter MOID = 2.2818 au 
 T_jup = 3.368 
[ 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 15.33   n/a E2021B55  

101388 (1998 UA31)          Discovered 1998-Oct-29 by CSS at Catalina
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

Alternate Designations
 1998 UA31 = 2001 HP53 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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