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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2001707835409922 4.0645e-08  
a 2.421377387999787 1.2438e-08 au
q 1.936688378995429 9.9777e-08 au
i 24.21827232036039 4.7552e-06 deg
node 89.84099793198367 1.0984e-05 deg
peri 202.1959959157738 1.6897e-05 deg
M 340.6968894440323 1.5859e-05 deg
tp 2459074.293302650180
(2020-Aug-12.79330265)
6.0887e-05 TDB
period 1376.233580439794
3.77
1.0604e-05
2.903e-08
d
yr
n .2615835023331992 2.0155e-09 deg/d
Q 2.906066397004145 1.4927e-08 au
  Orbit Determination Parameters
   # obs. used (total)      581  
   data-arc span      13458 days (36.85 yr)  
   first obs. used      1983-10-06  
   last obs. used      2020-08-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54641  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 20:00:53  

Additional Information
 Earth MOID = .932904 au 
 Jupiter MOID = 2.28231 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 15.3   n/a MPO325161  

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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