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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 ]

[ show orbit diagram ]
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 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457713.5 (2016-Nov-21.0) TDB
Reference: JPL 148 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1872718089287377 1.2911e-08  
q 1.01290043014366 1.4772e-08 au
tp 2457737.251023265923
(2016-Dec-14.75102327)
1.021e-05 TDB
node 213.5702583913718 1.0179e-06 deg
peri 148.5080721884101 9.4163e-06 deg
i 20.04811507111184 5.3042e-06 deg
  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
 Jupiter MOID = 3.92807 au 
 T_jup = 5.078 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.666944271111113E-16 -1.898642916015203E-16 -1.307088130207234E-13 7.601118350218784E-15 -1.206865015317182E-13 -2.004337287674451E-15
q -1.898642916015203E-16 2.182049019011557E-16 1.471046870057387E-13 -8.807486045403565E-15 1.386904436758E-13 2.120726488316578E-15
tp -1.307088130207234E-13 1.471046870057387E-13 1.042541448072738E-10 -5.565184998068877E-12 9.355498494408961E-11 1.354266265973817E-12
node 7.601118350218784E-15 -8.807486045403565E-15 -5.565184998068877E-12 1.036190823566526E-12 -5.680654681851375E-12 -2.52218877295406E-12
peri -1.206865015317182E-13 1.386904436758E-13 9.355498494408961E-11 -5.680654681851375E-12 8.866637643560203E-11 3.157435687469731E-12
i -2.004337287674451E-15 2.120726488316578E-15 1.354266265973817E-12 -2.52218877295406E-12 3.157435687469731E-12 2.813501685951135E-11

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

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