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465402 (2008 HW1)
Classification: Apollo [NEO]          SPK-ID: 2465402
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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 49 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .9599977083243252 2.3087e-08  
a 2.586708542275951 8.7433e-08 au
q .1034742695880822 5.8465e-08 au
i 10.48518447608057 6.9436e-06 deg
node 127.7118651622506 0.00011393 deg
peri 250.4740932655121 0.00011051 deg
M 316.3573380270021 5.1933e-05 deg
tp 2459184.716448130766
(2020-Dec-01.21644813)
0.00022854 TDB
period 1519.566367608544
4.16
7.7044e-05
2.109e-07
d
yr
n .2369096919185959 1.2012e-08 deg/d
Q 5.06994281496382 1.7137e-07 au
  Orbit Determination Parameters
   # obs. used (total)      323  
   data-arc span      4425 days (12.11 yr)  
   first obs. used      2008-03-30  
   last obs. used      2020-05-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51713  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-02 06:32:00  

Additional Information
 Earth MOID = .106701 au 
 Jupiter MOID = .878798 au 
 T_jup = 2.400 
[ 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 17.3   n/a MPO409146  

465402 (2008 HW1)          Discovered 2008-Mar-30 by CSS at Catalina
Reference: Last Updated: 2016-04-25

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