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162082 (1998 HL1)
Classification: Apollo [NEO, PHA]          SPK-ID: 2162082
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 148 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1870441209216715 1.2851e-08  
a 1.246298026771387 2.4652e-09 au
q 1.013185307947519 1.4735e-08 au
i 20.05199630767384 5.3012e-06 deg
node 213.5447493753875 1.0127e-06 deg
peri 148.6536542594013 9.4489e-06 deg
M 174.7944376530566 5.469e-06 deg
tp 2458753.750435105094
(2019-Sep-27.25043511)
8.1335e-06 TDB
period 508.1960533462823
1.39
1.5078e-06
4.128e-09
d
yr
n .7083880278674611 2.1018e-09 deg/d
Q 1.479410745595255 2.9263e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1300  
   # delay obs. used      3  
   # Doppler obs. used      1  
   data-arc span      7977 days (21.84 yr)  
   first obs. used      1998-04-18  
   last obs. used      2020-02-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .40043  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Apr-22 07:50:33  

Additional Information
 Earth MOID = .0420904 au 
 Jupiter MOID = 3.92807 au 
 T_jup = 5.078 
[ 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 19.1   n/a MPO502937  

162082 (1998 HL1)          Discovered 1998-Apr-18 by LINEAR at Socorro
Reference: 20070926/Numbers.arcLast Updated: 2007-09-30

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