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108145 (2001 HT1)
Classification: Main-belt Asteroid          SPK-ID: 2108145
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1700639403775626 3.6145e-08  
a 2.356222279692531 9.9889e-09 au
q 1.955513834402616 8.6086e-08 au
i 1.664332383116375 5.3466e-06 deg
node 350.6142402798043 0.00013881 deg
peri 248.5040844857742 0.0001398 deg
M 83.46297491219447 1.5794e-05 deg
tp 2458694.223148549148
(2019-Jul-29.72314855)
5.7662e-05 TDB
period 1321.060825333667
3.62
8.4007e-06
2.3e-08
d
yr
n .27250826994213 1.7329e-09 deg/d
Q 2.756930724982446 1.1688e-08 au
  Orbit Determination Parameters
   # obs. used (total)      755  
   data-arc span      10079 days (27.59 yr)  
   first obs. used      1991-10-06  
   last obs. used      2019-05-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54142  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 06:45:04  

Additional Information
 Earth MOID = .944058 au 
 Jupiter MOID = 2.25456 au 
 T_jup = 3.534 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456740.5 (2014-Mar-24.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1705152151509759 3.621e-08  
q 1.954332131852791 8.6204e-08 au
tp 2457372.064446661691
(2015-Dec-15.56444666)
5.6854e-05 TDB
node 350.6990091685355 0.0001389 deg
peri 248.4352621890543 0.00013988 deg
i 1.664420256359956 5.3431e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      755  
   data-arc span      10079 days (27.59 yr)  
   first obs. used      1991-10-06  
   last obs. used      2019-05-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54142  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 06:45:04  

Additional Information
 Jupiter MOID = 2.25456 au 
 T_jup = 3.534 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.31115079253768E-15 -3.107255260227159E-15 -1.583777156996317E-13 1.022957128462816E-14 -1.086489476468125E-14 -4.785942358957171E-16
q -3.107255260227159E-15 7.431166433087148E-15 3.714933450384279E-13 -2.526973755324025E-14 1.683070902500801E-14 1.199786517625274E-15
tp -1.583777156996317E-13 3.714933450384279E-13 3.232402705778153E-9 -1.224737498832635E-11 9.487326860087641E-10 1.019915525169852E-12
node 1.022957128462816E-14 -2.526973755324025E-14 -1.224737498832635E-11 1.929314633690087E-8 -1.92871994401334E-8 -1.117551286764864E-10
peri -1.086489476468125E-14 1.683070902500801E-14 9.487326860087641E-10 -1.92871994401334E-8 1.956614834976861E-8 1.119634243502325E-10
i -4.785942358957171E-16 1.199786517625274E-15 1.019915525169852E-12 -1.117551286764864E-10 1.119634243502325E-10 2.854861923239462E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 16.3   n/a MPO474951  

108145 (2001 HT1)          Discovered 2001-Apr-17 by LINEAR at Socorro
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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