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(2019 HF4)
Classification: Apollo [NEO]          SPK-ID: 3841669
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

[ hide orbit diagram ]

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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 2 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3792618965966699 0.00041542  
a 1.58912736490463 0.0010437 au
q .9864319065572318 1.2461e-05 au
i 3.853170623029692 0.0033247 deg
node 34.45855333400023 9.6437e-05 deg
peri 153.1347739958234 0.0013335 deg
M 307.5796318939903 0.30506 deg
tp 2459307.045239970286
(2021-Apr-02.54523997)
0.725 TDB
period 731.7057810760707
2.00
0.72083
0.001974
d
yr
n .4920010328066181 0.00048469 deg/d
Q 2.191822823252028 0.0014395 au
  Orbit Determination Parameters
   # obs. used (total)      10  
   data-arc span      2 days  
   first obs. used      2019-04-23  
   last obs. used      2019-04-25  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      7  
   norm. resid. RMS      .65498  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 21:14:24  

Additional Information
 Earth MOID = .00516321 au 
 Jupiter MOID = 2.76268 au 
 T_jup = 4.295 
[ 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 27.6   .19029 MPO467582 autocmod 2.6q

[ 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
2011-Jun-04 08:33 6_13:15 Earth 0.447282670605339 0.329588760826308 0.564977955726675 19.526960803879 19.5266557342159 2455716.856365842 9435.3127660987 5869084.0430435 390.003345519397 0.521172437643761 1324.80526438435 T 2 CATAB v2.0g-lin.ifort 2021-Apr-15 21:14:24 2021-Apr-15 21:14
2013-May-27 14:52 5_14:53 Earth 0.323485572472756 0.230515577047999 0.4164992810104 15.8859257612119 15.8854072573446 2456440.119246732 8093.18714095581 4640917.72420597 308.424984847045 2.27403407446295 5230.40190449495 T 2 CATAB v2.0g-lin.ifort 2021-Apr-15 21:14:24 2021-Apr-15 21:14
2015-May-19 23:36 4_22:01 Earth 0.201014159600917 0.135329282107848 0.266809764202092 12.2868872586299 12.2858084040736 2457162.483571467 7080.50681428188 3286632.46962518 235.365704368755 3.9507881972512 7318.76680581568 T 2 CATAB v2.0g-lin.ifort 2021-Apr-15 21:14:24 2021-Apr-15 21:14
2017-May-09 06:48 4_05:18 Earth 0.0890786775150424 0.0547461317831106 0.123536671567212 8.90000262172965 8.89664114209467 2457882.783663085 6078.09453114339 1723239.64870606 160.639274854838 5.26547548056135 6582.56093981424 T 2 CATAB v2.0g-lin.ifort 2021-Apr-15 21:14:24 2021-Apr-15 21:14
2019-Apr-23 06:31 < 00:01 Earth 0.00794609969076976 0.00792271285416345 0.00796948430750717 6.40893828818394 6.35640241770814 2458596.771362559 0.20001015720807 1147.03691446188 23.358300515999 -1.70156378564893 650.051814439793 T 2 CATAB v2.0g-lin.ifort 2021-Apr-15 21:14:24 2021-Apr-15 21:14
2019-Apr-23 14:11 00:01 Moon 0.00782748540771247 0.00780513663376856 0.00784983415574791 6.4289489184845 6.42829762230113 2458597.091272755 1.3062848738346 1114.21605816846 18.3748987778262 -0.0502129288004586 936.65908388743 T 2 CATAB v2.0g-lin.ifort 2021-Apr-15 21:14:24 2021-Apr-15 21:14
2021-Apr-26 22:23 7_20:11 Earth 0.0198918693634181 0.00313829690791409 0.0472914812912712 6.76117968211465 6.74133921190932 2459331.432911776 11291.0596529089 1373526.74969103 64.8889907220657 -9.25152455894672 6384.77730866448 T 2 CATAB v2.0g-lin.ifort 2021-Apr-15 21:14:24 2021-Apr-15 21:14
2023-May-11 14:33 14:01 Earth 0.100532012404387 0.0969551741740443 0.104109041395725 9.26223714958916 9.25937521841335 2460076.106340019 841.444772928052 178500.87886859 183.946252572893 -2.46464977399051 2910.41801345395 T 2 CATAB v2.0g-lin.ifort 2021-Apr-15 21:14:24 2021-Apr-15 21:14
2025-May-20 03:03 3_11:02 Earth 0.203013817754934 0.159259700219318 0.246803295521377 12.3426289374771 12.3415655346885 2460815.626761247 4981.65747333832 2186808.27065415 243.058043473274 3.49978114411639 6330.78470629049 T 2 CATAB v2.0g-lin.ifort 2021-Apr-15 21:14:24 2021-Apr-15 21:14
2027-May-28 02:24 5_06:48 Earth 0.31339832592011 0.230638558520819 0.396186550451933 15.6196633941218 15.6191190775192 2461553.599731170 7607.70630646764 4130290.16031075 309.979689654353 2.05884135071905 4545.89364885333 T 2 CATAB v2.0g-lin.ifort 2021-Apr-15 21:14:24 2021-Apr-15 21:14
2029-Jun-03 09:55 6_21:00 Earth 0.428806238607252 0.309311157487035 0.548304342323952 18.9856132727928 18.9852859845723 2462290.912950624 9899.76210979983 5959082.35720803 382.242707439103 0.649878670575922 1614.17478488756 T 2 CATAB v2.0g-lin.ifort 2021-Apr-15 21:14:24 2021-Apr-15 21:14
2031-Aug-22 22:50 5_13:03 Mars 0.0758390709383024 0.051986628526366 0.193946156396247 10.5860125166787 10.5856559111265 2463101.451373979 7982.86240779122 6564115.2910209 227.369244108094 -43.2785023648696 34864.2165492513 T 2 CATAB v2.0g-lin.ifort 2021-Apr-15 21:14:24 2021-Apr-15 21:14
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]
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