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(2020 HF4)
Classification: Apollo [NEO]          SPK-ID: 54016681
[ 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 5 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .02444480910509813 3.7507e-06  
a 1.015495608028144 5.4966e-06 au
q .9906720117428304 9.158e-06 au
i 4.834588500731071 0.0054598 deg
node 39.14614923816868 0.0035257 deg
peri 29.44653551468939 0.014141 deg
M 13.5164603970245 0.022981 deg
tp 2459186.466177588131
(2020-Dec-02.96617759)		 0.023748 TDB
period 373.7795191842415
1.02		 0.0030348
8.309e-06		 d
yr
n .9631346329132352 7.8198e-06 deg/d
Q 1.040319204313457 5.631e-06 au
   Orbit Determination Parameters
   # obs. used (total)      28  
   data-arc span      12 days  
   first obs. used      2020-04-18  
   last obs. used      2020-04-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      5  
   norm. resid. RMS      .6358  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-22 06:33:37  

Additional Information
 Earth MOID = .000927879 au 
 Jupiter MOID = 3.95171 au 
 T_jup = 6.004 
[ 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 27.4   .64374 E2020-QF4 autocmod 2.8

[ 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
1939-Oct-25 23:02 23:03 Earth 0.42422024943251 0.40237170492428 0.446068920245414 13.0273668186059 13.0268846795019 2429562.460039782 1383.26327975541 1089562.8769576 5373.69734969263 -0.925942882637387 138.378488839019 T 5 CATAB v2.0f-lin.ifort 2020-Aug-22 06:33:38 2020-Aug-22 06:33
1940-Nov-04 07:12 1_05:49 Earth 0.248283222791701 0.246689245679252 0.249879514947336 7.93179493883879 7.93044183679481 2429937.800165541 1788.78041464281 88071.9814199223 592.392813099901 25.4851584631614 31584.3085301085 T 5 CATAB v2.0f-lin.ifort 2020-Aug-22 06:33:38 2020-Aug-22 06:33
1941-Nov-06 07:03 17:31 Earth 0.0765363563521634 0.0577578864531012 0.0955653227464232 3.52414161757592 3.51424922849107 2430304.794024111 1050.90395731503 967687.063702833 2522.26695340984 -13.2198796832117 767.036517104841 T 5 CATAB v2.0f-lin.ifort 2020-Aug-22 06:33:38 2020-Aug-22 06:33
1942-May-09 09:23 5_11:48 Earth 0.0320343835615675 0.0293007725372897 0.0461505536077883 2.58285205882728 2.55044575344946 2430488.891102093 7908.225485362 1139278.13671324 1343.28830193082 66.4510745681201 2790.88996278121 T 5 CATAB v2.0f-lin.ifort 2020-Aug-22 06:33:38 2020-Aug-22 06:33
1942-Nov-08 00:08 1_00:53 Earth 0.0543440311221913 0.0321581160891384 0.0890578058002241 2.99564824314184 2.97923626283065 2430671.505686704 1492.78748292618 1951658.81378293 2720.30853515635 36.0853595974817 1500.65820679534 T 5 CATAB v2.0f-lin.ifort 2020-Aug-22 06:33:38 2020-Aug-22 06:33
1977-Oct-13 09:18 7_00:44 Earth 0.375264296515912 0.369567478632713 0.380962236545391 11.593251481488 11.5926390164177 2443429.887160910 10123.8585576126 285942.245569591 131.377971610813 6.54056549007696 33959.5418828995 T 5 CATAB v2.0f-lin.ifort 2020-Aug-22 06:33:38 2020-Aug-22 06:33
1978-Oct-26 00:58 4_15:47 Earth 0.206498107283813 0.199901379839395 0.213129550281 6.78525249966355 6.7833505845104 2443807.540185004 6706.93644032272 355824.694587487 121.333335900936 22.092282150751 74200.1714882309 T 5 CATAB v2.0f-lin.ifort 2020-Aug-22 06:33:38 2020-Aug-22 06:33
1979-Nov-02 19:38 19:09 Earth 0.0444506499067257 0.0372715563077905 0.0516601113245663 2.94126481925721 2.9208139114764 2444180.317760893 1148.89399993654 363423.419568775 173.828985739971 10.2124699298108 4398.27389802045 T 5 CATAB v2.0f-lin.ifort 2020-Aug-22 06:33:38 2020-Aug-22 06:33
1980-May-01 02:51 1_05:25 Earth 0.0230257510557078 0.0228904849960734 0.0244283031737495 2.55506507982433 2.5093670165196 2444360.618960320 1765.24187784059 304330.971868851 89.8563876461713 -83.8650348236567 11189.1059183075 T 5 CATAB v2.0f-lin.ifort 2020-Aug-22 06:33:38 2020-Aug-22 06:33
1980-Nov-04 19:28 00:26 Earth 0.0651182787862883 0.0586282796578803 0.0718670054594195 3.21578594475626 3.20303671161993 2444548.311093191 25.8915526093294 388654.522896412 195.863856507771 31.9340692799836 10676.2306091393 T 5 CATAB v2.0f-lin.ifort 2020-Aug-22 06:33:38 2020-Aug-22 06:33
1981-Oct-30 00:43 17:17 Earth 0.216971232809372 0.20989223872264 0.224051193714121 6.85323393690651 6.85144179897673 2444907.529988162 1037.34634159186 353763.129974546 1076.3178949744 -4.05611844284856 1308.04559559966 T 5 CATAB v2.0f-lin.ifort 2020-Aug-22 06:33:38 2020-Aug-22 06:33
2017-Oct-13 02:41 00:53 Earth 0.374214427458333 0.373476469874598 0.374952390328897 11.4784678837689 11.4778475582587 2458039.612031896 53.2948543274403 36865.8791851055 19.5848217507312 3.55163922165688 115754.538051828 T 5 CATAB v2.0f-lin.ifort 2020-Aug-22 06:33:38 2020-Aug-22 06:33
2018-Oct-25 02:28 00:15 Earth 0.215443327897543 0.214904955094123 0.215981710869285 6.93527435936427 6.93349086596163 2458416.602813200 15.3768382372243 26948.0195062237 108.434324400641 5.30296440936099 15465.0015033053 T 5 CATAB v2.0f-lin.ifort 2020-Aug-22 06:33:38 2020-Aug-22 06:33
2019-Nov-01 00:27 00:05 Earth 0.0633547526422779 0.0630645265445453 0.0636449755364481 3.19331740304672 3.18011997113621 2458788.518968121 4.90908777155104 14454.7359101112 176.546622276602 5.97795773206595 3121.12700893159 T 5 CATAB v2.0f-lin.ifort 2020-Aug-22 06:33:38 2020-Aug-22 06:33
2020-May-01 09:50 00:01 Earth 0.0232199334097879 0.0231456731776689 0.0232941769472352 2.55758768123025 2.51232072754725 2458970.909387514 1.0003005975104 3567.77928833308 25.4078672806846 2.59390055961947 2005.60443717309 T 5 CATAB v2.0f-lin.ifort 2020-Aug-22 06:33:38 2020-Aug-22 06:33
2020-Nov-03 22:53 00:04 Earth 0.0414035151003734 0.0410997052947467 0.0417073377153219 2.88844049797212 2.86607407960607 2459157.453326852 3.80788548009577 15193.4910663372 241.920681266235 8.63870150709519 2212.36229604218 T 5 CATAB v2.0f-lin.ifort 2020-Aug-22 06:33:38 2020-Aug-22 06:33
2021-Nov-04 22:45 01:09 Earth 0.197433967115339 0.197026875533423 0.197841329750686 6.47281618921286 6.47073089579466 2459523.448095740 69.2962420458245 23356.5041895408 379.83396177521 -29.6775172990114 18365.8787170974 T 5 CATAB v2.0f-lin.ifort 2020-Aug-22 06:33:38 2020-Aug-22 06:33
2022-Oct-30 00:05 03:51 Earth 0.36117379941679 0.360715373009936 0.361632969587419 10.9962337542079 10.9955628424477 2459882.503702776 230.492351081787 34605.76123099 2179.58797139385 -48.7497807830498 11641.8321653474 T 5 CATAB v2.0f-lin.ifort 2020-Aug-22 06:33:38 2020-Aug-22 06:33
2056-Sep-23 12:59 15:22 Earth 0.386293439702056 0.384143853423645 0.388443070486152 11.7146910658603 11.714102255967 2472265.040859726 921.665350990855 107391.531637441 745.980438015568 -3.57361249316634 3379.26667853552 T 5 CATAB v2.0f-lin.ifort 2020-Aug-22 06:33:38 2020-Aug-22 06:33
2057-Oct-14 22:15 10:39 Earth 0.223283932181498 0.221067607533238 0.225500279605901 7.09364465277017 7.09196222293784 2472651.426859773 638.534012604008 110576.926045791 399.896352193744 -2.43859792444148 2204.15225431214 T 5 CATAB v2.0f-lin.ifort 2020-Aug-22 06:33:38 2020-Aug-22 06:33
2058-Jun-25 08:42 6_05:51 Earth 0.114021184130853 0.112646958416175 0.115416229870712 3.15164798458829 3.14422461857887 2472904.862581506 8991.4420002702 103376.099651336 447.115470501928 47.2274842536922 6807.96891171158 T 5 CATAB v2.0f-lin.ifort 2020-Aug-22 06:33:38 2020-Aug-22 06:33
2058-Oct-27 10:14 04:20 Earth 0.0661066945170366 0.0640260506073815 0.0681883766354899 3.19656856237245 3.18393452995471 2473028.926358691 260.413279959764 104600.756659562 247.059801116163 -8.20380321512793 4039.70887821787 T 5 CATAB v2.0f-lin.ifort 2020-Aug-22 06:33:38 2020-Aug-22 06:33
2059-Apr-28 02:22 09:57 Earth 0.0263370654324162 0.0263134155973582 0.026485764907139 2.55693327397365 2.51705600344623 2473211.598399214 597.25295194032 97694.2109647266 164.489754770287 -87.8190055264211 19232.4261005578 T 5 CATAB v2.0f-lin.ifort 2020-Aug-22 06:33:38 2020-Aug-22 06:33
2059-Nov-02 02:56 06:33 Earth 0.0551893508614829 0.0527709847146435 0.057609867061322 3.12389143923235 3.10839829974123 2473399.622301432 392.635246272705 121869.173311829 379.774274520553 9.36075030583601 2536.15166156895 T 5 CATAB v2.0f-lin.ifort 2020-Aug-22 06:33:38 2020-Aug-22 06:33
2060-Oct-31 09:15 1_08:49 Earth 0.223836576209675 0.221922673517648 0.225792788005508 7.23269223953315 7.23104623609663 2473763.885547036 1969.28229490558 181294.615363953 697.740724205641 -57.8501524295388 25015.4446215072 T 5 CATAB v2.0f-lin.ifort 2020-Aug-22 06:33:38 2020-Aug-22 06:33
2061-Oct-23 07:32 4_17:00 Earth 0.397238603074446 0.396106972317211 0.398570664808159 12.0088242166718 12.0082656557821 2474120.814036982 6779.98913150178 449257.275174948 893.967489342464 -82.1394931623959 45455.6708934722 T 5 CATAB v2.0f-lin.ifort 2020-Aug-22 06:33:38 2020-Aug-22 06:33
2093-Sep-26 14:46 1_00:41 Earth 0.380877275901877 0.367075348672216 0.394689622010558 11.4837337100021 11.4831245158853 2485782.115445139 1481.14426371811 695635.599676091 688.59002235693 8.24506121024803 8000.3868862783 T 5 CATAB v2.0f-lin.ifort 2020-Aug-22 06:33:38 2020-Aug-22 06:33
2094-Oct-18 19:05 13:53 Earth 0.208020974297245 0.193979784246192 0.222065352764754 6.57720187003513 6.57525414176289 2486169.294926272 832.768881993168 701433.833556384 424.629802390337 3.78815688770164 2868.90465778235 T 5 CATAB v2.0f-lin.ifort 2020-Aug-22 06:33:38 2020-Aug-22 06:33
2095-Jun-01 06:57 4_21:27 Earth 0.0913521457989505 0.0806396997973039 0.102696933726313 3.20523380517523 3.19612100810015 2486394.789792509 7046.58206356605 668383.40681056 293.016297576229 34.5231640730376 15877.1282233273 T 5 CATAB v2.0f-lin.ifort 2020-Aug-22 06:33:38 2020-Aug-22 06:33
2095-Oct-28 07:50 04:26 Earth 0.0433428266663278 0.0306895598947462 0.0560633172999288 2.81448514964009 2.79255754164706 2486543.826396036 266.214213056823 638372.988193253 229.147086405902 -8.65239607998861 3767.24665659401 T 5 CATAB v2.0f-lin.ifort 2020-Aug-22 06:33:38 2020-Aug-22 06:33
2096-Apr-18 04:44 1_17:42 Earth 0.0392800088525739 0.0367115489361592 0.0441927548419994 2.62300183903797 2.59701226876509 2486716.697133039 2501.96990083119 519113.991000936 200.292454822872 -68.3335835850498 14902.7973870707 T 5 CATAB v2.0f-lin.ifort 2020-Aug-22 06:33:38 2020-Aug-22 06:33
2096-Oct-27 06:43 03:21 Earth 0.0874889895882429 0.0846790308006529 0.0903469726316411 3.74510430971462 3.73696350547759 2486908.780118728 200.845829066917 174478.796804786 333.548348899186 36.0342207395734 21555.0960055035 T 5 CATAB v2.0f-lin.ifort 2020-Aug-22 06:33:38 2020-Aug-22 06:33
2097-Oct-19 03:18 1_05:54 Earth 0.251091014953258 0.242701656008169 0.259489218704488 7.85691098222042 7.85556025800934 2487265.637473627 1794.14521959641 425110.835939425 1373.78698966307 -10.1553853202484 3010.3811900394 T 5 CATAB v2.0f-lin.ifort 2020-Aug-22 06:33:38 2020-Aug-22 06:33
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