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(2012 HL8)
Classification: Amor [NEO]          SPK-ID: 3602787
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | 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 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .5388628287202439 0.00013768  
a 2.448649579398466 0.00077933 au
q 1.129163340499173 2.2241e-05 au
i 3.523171664635635 0.00059792 deg
node 65.2628089173224 0.00029926 deg
peri 187.8253979784446 0.00075879 deg
M 31.77334603300114 0.35909 deg
tp 2458876.976713911681
(2020-Jan-28.47671391)
1.3371 TDB
period 1399.549891459595
3.83
0.66815
0.001829
d
yr
n .2572255567284957 0.0001228 deg/d
Q 3.768135818297758 0.0011993 au
  Orbit Determination Parameters
   # obs. used (total)      34  
   data-arc span      65 days  
   first obs. used      2012-04-21  
   last obs. used      2012-06-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      6  
   norm. resid. RMS      .617  
   source      ORB  
   producer      Otto Matic  
   solution date      2017-Apr-06 08:50:00  

Additional Information
 Earth MOID = .115098 au 
 Jupiter MOID = 1.30149 au 
 T_jup = 3.279 
[ 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 23.7   n/a MPO234430  

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
2012-May-25 23:17 00:01 Earth 0.131255535669948 0.131173603231483 0.13133746801583 6.6268095345911 6.6237455212442 2456073.470291911 1.20652953582933 4081.93571753531 33.3297863819943 0.254186683485906 2997.29620518848 T 11 CATAB v2.0e-lin.ifort 2017-Nov-29 06:12:21 2018-Dec-11 15:49
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]
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