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(2018 HW1)
Classification: Apollo [NEO]          SPK-ID: 3819564
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 6 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1362632258909874 4.7586e-05  
a 1.097900641706952 4.7187e-05 au
q .9482971585601776 1.1495e-05 au
i 6.869728019084254 0.0022719 deg
node 32.0750244713623 0.00014999 deg
peri 120.8153485345852 0.0033909 deg
M 345.8463042144748 0.049694 deg
tp 2459017.020011346868
(2020-Jun-16.52001135)
0.059068 TDB
period 420.1873613077386
1.15
0.027089
7.417e-05
d
yr
n .8567606576256387 5.5235e-05 deg/d
Q 1.247504124853727 5.3617e-05 au
  Orbit Determination Parameters
   # obs. used (total)      55  
   data-arc span      19 days  
   first obs. used      2018-04-23  
   last obs. used      2018-05-12  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      6  
   norm. resid. RMS      .78021  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-May-14 06:26:05  

Additional Information
 Earth MOID = .0013886 au 
 Jupiter MOID = 3.73306 au 
 T_jup = 5.643 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 25.8   n/a MPO450738  

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