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393908 (2005 UH3)
Classification: Apollo [NEO]          SPK-ID: 2393908
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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 42 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .5461322195757803 6.4534e-08  
a 1.726385803226711 7.311e-09 au
q .783550892666391 1.1157e-07 au
i 44.77267253551346 1.6507e-05 deg
node 53.32946215367782 4.439e-06 deg
peri 309.1569326191386 8.2492e-06 deg
M 257.4619437584598 7.4797e-06 deg
tp 2459436.486843098600
(2021-Aug-09.98684310)
1.8549e-05 TDB
period 828.5242243657734
2.27
5.2631e-06
1.441e-08
d
yr
n .4345075127713691 2.7601e-09 deg/d
Q 2.669220713787031 1.1304e-08 au
  Orbit Determination Parameters
   # obs. used (total)      121  
   # delay obs. used      3  
   # Doppler obs. used      2  
   data-arc span      5232 days (14.32 yr)  
   first obs. used      2005-10-25  
   last obs. used      2020-02-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5171  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-26 23:31:11  

Additional Information
 Earth MOID = .0805861 au 
 Jupiter MOID = 3.21871 au 
 T_jup = 3.699 
[ 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 17.52   n/a E2021B25  

393908 (2005 UH3)          Discovered 2005-Oct-25 by Spacewatch at Kitt Peak
Reference: Last Updated: 2014-05-15

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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