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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 ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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 
[ show covariance matrix ]

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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