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101394 (1998 UL38)
Classification: Main-belt Asteroid          SPK-ID: 2101394
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 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1666809142896077 3.308e-08  
a 2.395033673767864 9.2566e-09 au
q 1.995827271269839 8.2667e-08 au
i 3.753100990038616 3.3068e-06 deg
node 77.97338465039691 6.087e-05 deg
peri 346.0723614297128 6.2098e-05 deg
M 273.2089323956654 1.2966e-05 deg
tp 2459326.891163582451
(2021-Apr-22.39116358)
4.9502e-05 TDB
period 1353.835390357775
3.71
7.8487e-06
2.149e-08
d
yr
n .2659112049839852 1.5416e-09 deg/d
Q 2.79424007626589 1.0799e-08 au
  Orbit Determination Parameters
   # obs. used (total)      795  
   data-arc span      8070 days (22.09 yr)  
   first obs. used      1998-10-11  
   last obs. used      2020-11-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52989  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-17 22:29:11  

Additional Information
 Earth MOID = 1.00949 au 
 Jupiter MOID = 2.50933 au 
 T_jup = 3.508 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457802.5 (2017-Feb-18.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1679941052969959 3.3281e-08  
q 1.992241658366649 8.3325e-08 au
tp 2457970.813039308096
(2017-Aug-05.31303931)
4.6029e-05 TDB
node 77.98915955391774 6.0828e-05 deg
peri 345.5673978915305 6.2026e-05 deg
i 3.755543158779642 3.3091e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      795  
   data-arc span      8070 days (22.09 yr)  
   first obs. used      1998-10-11  
   last obs. used      2020-11-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52989  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-17 22:29:11  

Additional Information
 Jupiter MOID = 2.50933 au 
 T_jup = 3.508 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.107658010224504E-15 -2.76342758992254E-15 -4.537373746698688E-13 2.94199254408282E-15 -9.683351036356842E-14 -1.073327306467047E-15
q -2.76342758992254E-15 6.943059777387194E-15 1.189024493985977E-12 -7.268927899115107E-15 2.549062423660142E-13 2.884955390355199E-15
tp -4.537373746698688E-13 1.189024493985977E-12 2.118646828898927E-9 -6.517191627767689E-12 5.74872584902423E-10 2.756224252793895E-12
node 2.94199254408282E-15 -7.268927899115107E-15 -6.517191627767689E-12 3.700076152724562E-9 -3.693543201276688E-9 -2.247113523971246E-11
peri -9.683351036356842E-14 2.549062423660142E-13 5.74872584902423E-10 -3.693543201276688E-9 3.847187398359979E-9 2.31426078992448E-11
i -1.073327306467047E-15 2.884955390355199E-15 2.756224252793895E-12 -2.247113523971246E-11 2.31426078992448E-11 1.095045659886224E-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 16.0   n/a MPO280448  

101394 (1998 UL38)          Discovered 1998-Oct-28 by LINEAR at Socorro
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
Alternate Designations
 1998 UL38 = 1998 VD8 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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