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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 6 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .02444480900537058 3.7507e-06  
a 1.015495607964531 5.4966e-06 au
q .9906720117820448 9.158e-06 au
i 4.834588516859633 0.0054598 deg
node 39.14614890336083 0.0035257 deg
peri 29.44653610533381 0.014141 deg
M 13.51646005748302 0.022981 deg
tp 2459186.466177941988
(2020-Dec-02.96617794)		 0.023748 TDB
period 373.7795191491197
1.02		 0.0030348
8.309e-06		 d
yr
n .963134633003735 7.8198e-06 deg/d
Q 1.040319204147016 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.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      5  
   norm. resid. RMS      .6358  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 22:25:18  

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 23:04 Earth 0.424220299367334 0.40235426439072 0.446086460660477 13.0273683633135 13.0268862243234 2429562.460036575 1384.11220273682 1090435.013026 5377.2202877477 -0.925646551492079 138.244701381938 T 6 CATAB v2.0g-lin.ifort 2021-Apr-15 22:25:19 2021-Apr-15 22:25
1940-Nov-04 07:12 1_05:50 Earth 0.248283225128086 0.246690688178873 0.249878081358651 7.9317950358468 7.93044193383186 2429937.800172860 1790.12252356247 88022.0932638254 594.112449875404 25.5254828144543 31523.5333303227 T 6 CATAB v2.0g-lin.ifort 2021-Apr-15 22:25:19 2021-Apr-15 22:25
1941-Nov-06 07:03 17:32 Earth 0.0765363103536108 0.0577377222613619 0.0955859153161508 3.52414075749547 3.51424836003406 2430304.794023446 1051.78746311069 968728.277731712 2524.10679709457 -13.2185690491893 766.387637952232 T 6 CATAB v2.0g-lin.ifort 2021-Apr-15 22:25:19 2021-Apr-15 22:25
1942-May-09 09:23 5_11:56 Earth 0.0320343613624481 0.0293005754484621 0.0461685811632925 2.58285192712474 2.55044559746815 2430488.891089248 7916.23992844806 1140436.56439435 1344.22843667136 66.4504164660061 2789.15547138327 T 6 CATAB v2.0g-lin.ifort 2021-Apr-15 22:25:19 2021-Apr-15 22:25
1942-Nov-08 00:08 1_00:54 Earth 0.0543441063456378 0.0321526967041142 0.0890936215231259 2.99564936015171 2.97923740877109 2430671.505682762 1494.03301969403 1953576.27800181 2722.36258707538 36.0859943877948 1499.48975126907 T 6 CATAB v2.0g-lin.ifort 2021-Apr-15 22:25:19 2021-Apr-15 22:25
1977-Oct-13 09:18 7_00:54 Earth 0.375264308619708 0.369560986022028 0.380968755645406 11.5932517799465 11.5926393149116 2443429.887175194 10133.5754993905 286268.303540499 131.350461149722 6.53976092052908 33962.4512415126 T 6 CATAB v2.0g-lin.ifort 2021-Apr-15 22:25:19 2021-Apr-15 22:25
1978-Oct-26 00:58 4_15:53 Earth 0.206498121603669 0.199894488068221 0.213136537630282 6.78525285897886 6.78335094405803 2443807.540195271 6713.43019773033 356193.744600622 121.303409158708 22.0905605212142 74213.3045849945 T 6 CATAB v2.0g-lin.ifort 2021-Apr-15 22:25:19 2021-Apr-15 22:25
1979-Nov-02 19:38 19:10 Earth 0.0444506655388983 0.0372645763414091 0.0516671819654367 2.94126504099995 2.92081414198533 2444180.317764759 1150.02517776214 363778.319477884 173.830777425909 10.2122014200359 4398.21288265148 T 6 CATAB v2.0g-lin.ifort 2021-Apr-15 22:25:19 2021-Apr-15 22:25
1980-May-01 02:51 1_05:27 Earth 0.0230257495812258 0.0228905011703747 0.0244302677041477 2.55506507433208 2.50936700796615 2444360.618962741 1766.92707931164 304620.080708315 89.8584007835393 -83.8654725424808 11189.4971333332 T 6 CATAB v2.0g-lin.ifort 2021-Apr-15 22:25:19 2021-Apr-15 22:25
1980-Nov-04 19:28 00:26 Earth 0.0651182637744362 0.0586224901621051 0.0718732358470709 3.21578568761711 3.20303645051004 2444548.311094915 25.8738153278419 389007.660166998 195.845597409051 31.9338151995454 10676.8338894925 T 6 CATAB v2.0g-lin.ifort 2021-Apr-15 22:25:19 2021-Apr-15 22:25
1981-Oct-30 00:43 17:18 Earth 0.216971216737232 0.209886113678791 0.2240572866057 6.85323353100959 6.85144139284056 2444907.529990315 1037.90273917563 354067.118177372 1076.31625588315 -4.05321245496083 1307.10700062092 T 6 CATAB v2.0g-lin.ifort 2021-Apr-15 22:25:19 2021-Apr-15 22:25
2017-Oct-13 02:41 00:53 Earth 0.374214428151458 0.373476466994998 0.37495239459481 11.478467894173 11.4778475686644 2458039.612024441 53.2974026513627 36866.0576645977 19.5851954619338 3.55163912755475 115752.428864989 T 6 CATAB v2.0g-lin.ifort 2021-Apr-15 22:25:19 2021-Apr-15 22:25
2018-Oct-25 02:28 00:15 Earth 0.215443328154444 0.214904954412138 0.215981712065146 6.93527436514969 6.93349087175034 2458416.602812730 15.3772937229987 26948.066932051 108.434442771574 5.30297415081891 15465.0149508306 T 6 CATAB v2.0g-lin.ifort 2021-Apr-15 22:25:19 2021-Apr-15 22:25
2019-Nov-01 00:27 00:05 Earth 0.063354752438801 0.0630645263064018 0.0636449753676596 3.19331739687301 3.18011996489206 2458788.518968616 4.90911774076765 14454.7377623673 176.546615593888 5.97796224425629 3121.12963343425 T 6 CATAB v2.0g-lin.ifort 2021-Apr-15 22:25:19 2021-Apr-15 22:25
2020-May-01 09:50 00:01 Earth 0.023219933389426 0.0231456731599604 0.0232941769242199 2.55758767888434 2.51232072511089 2458970.909387497 1.00030063311115 3567.77915974531 25.4078672862828 2.59390027117867 2005.60409867337 T 6 CATAB v2.0g-lin.ifort 2021-Apr-15 22:25:19 2021-Apr-15 22:25
2020-Nov-03 22:53 00:04 Earth 0.0414035156344812 0.0410997057861469 0.0417073382921703 2.88844050057729 2.86607408251724 2459157.453324905 3.80789639945914 15193.4933005011 241.920641997455 8.63870358988664 2212.36322718206 T 6 CATAB v2.0g-lin.ifort 2021-Apr-15 22:25:19 2021-Apr-15 22:25
2021-Nov-04 22:45 01:09 Earth 0.197433967272118 0.197026874787542 0.197841330811596 6.47281615801578 6.4707308645888 2459523.448092938 69.2966846936366 23356.5587639376 379.833501139373 -29.6775291076793 18365.9078234297 T 6 CATAB v2.0g-lin.ifort 2021-Apr-15 22:25:19 2021-Apr-15 22:25
2022-Oct-30 00:05 03:51 Earth 0.361173799212165 0.360715369904262 0.361632972301971 10.9962336195264 10.9955627077575 2459882.503694402 230.496506391461 34606.0926755671 2179.57980829587 -48.7499413255847 11641.9064333191 T 6 CATAB v2.0g-lin.ifort 2021-Apr-15 22:25:19 2021-Apr-15 22:25
2056-Sep-23 12:59 15:22 Earth 0.386293449667182 0.384141868053584 0.388445075807085 11.7146914013051 11.7141025914438 2472265.040866068 922.182039022204 107490.939159293 745.912379888552 -3.57124866834591 3377.2971951255 T 6 CATAB v2.0g-lin.ifort 2021-Apr-15 22:25:19 2021-Apr-15 22:25
2057-Oct-14 22:15 10:39 Earth 0.223283942606061 0.22106546381391 0.225502444166829 7.09364494792869 7.09196251824463 2472651.426860772 638.946577864989 110684.26992163 399.851483541698 -2.43704704415257 2202.9429299531 T 6 CATAB v2.0g-lin.ifort 2021-Apr-15 22:25:19 2021-Apr-15 22:25
2058-Jun-25 08:42 6_05:58 Earth 0.114021191966641 0.112645403741919 0.115417838824279 3.15164747541901 3.14422410871689 2472904.862607677 8998.33709154855 103481.846753778 446.992670236848 47.2215694240989 6809.50793437362 T 6 CATAB v2.0g-lin.ifort 2021-Apr-15 22:25:19 2021-Apr-15 22:25
2058-Oct-27 10:14 04:21 Earth 0.0661067045669558 0.064023933788977 0.0681905150374956 3.19656874046096 3.18393471067214 2473028.926358389 260.60856377514 104707.18746305 247.017982296647 -8.20210516431127 4039.49373807352 T 6 CATAB v2.0g-lin.ifort 2021-Apr-15 22:25:19 2021-Apr-15 22:25
2059-Apr-28 02:22 09:58 Earth 0.0263370648929652 0.0263134028342768 0.0264860168926772 2.55693327105976 2.51705599965577 2473211.598402089 597.914402880018 97797.0939548296 164.48119238574 -87.8182980922265 19231.9707643137 T 6 CATAB v2.0g-lin.ifort 2021-Apr-15 22:25:19 2021-Apr-15 22:25
2059-Nov-02 02:56 06:33 Earth 0.0551893393427074 0.0527684686332475 0.0576123671182925 3.12389125419408 3.10839811053622 2473399.622303077 393.065720437254 121996.949787448 379.681570585365 9.36466157142721 2537.91474272153 T 6 CATAB v2.0g-lin.ifort 2021-Apr-15 22:25:19 2021-Apr-15 22:25
2060-Oct-31 09:15 1_08:51 Earth 0.223836566443255 0.221920527521415 0.225794999631184 7.23269204120946 7.23104603765567 2473763.885553222 1971.38345702101 181483.144891957 697.717127397327 -57.847047559802 25015.0953293331 T 6 CATAB v2.0g-lin.ifort 2021-Apr-15 22:25:19 2021-Apr-15 22:25
2061-Oct-23 07:32 4_17:07 Earth 0.397238596081432 0.396105560847512 0.398572484973472 12.0088244602073 12.008265899319 2474120.814067324 6787.31274553339 449732.836005413 893.988014096222 -82.1374867105973 45453.9772173603 T 6 CATAB v2.0g-lin.ifort 2021-Apr-15 22:25:19 2021-Apr-15 22:25
2093-Sep-26 14:46 1_00:42 Earth 0.380877228092155 0.367060578195742 0.39470431521832 11.4837323319273 11.4831231376608 2485782.115431535 1481.73953542187 696375.174822443 689.087254819945 8.24354713243781 7993.2344202164 T 6 CATAB v2.0g-lin.ifort 2021-Apr-15 22:25:19 2021-Apr-15 22:25
2094-Oct-18 19:05 13:53 Earth 0.208020926133952 0.193964197356741 0.222080848105577 6.57720056787745 6.57525283876811 2486169.294923458 833.085719914753 702209.267215326 424.917996216181 3.78710667044111 2866.20823145241 T 6 CATAB v2.0g-lin.ifort 2021-Apr-15 22:25:19 2021-Apr-15 22:25
2095-Jun-01 06:57 4_21:35 Earth 0.0913521083129257 0.0806281930027774 0.10270981418774 3.20523327382486 3.19612047148842 2486394.789778119 7054.83685685265 669131.217823803 293.091206323984 34.5235918380681 15876.4257125141 T 6 CATAB v2.0g-lin.ifort 2021-Apr-15 22:25:19 2021-Apr-15 22:25
2095-Oct-28 07:50 04:27 Earth 0.0433427833708641 0.030675040022304 0.056077946258588 2.81448462614412 2.79255699204693 2486543.826397242 266.710789271386 639109.821152541 229.345352539383 -8.65353731642526 3764.18553354824 T 6 CATAB v2.0g-lin.ifort 2021-Apr-15 22:25:19 2021-Apr-15 22:25
2096-Apr-18 04:44 1_17:45 Earth 0.039280022178064 0.0367100078843463 0.0441998566849831 2.62300194227803 2.59701238189459 2486716.697127291 2504.84494168634 519732.561083399 200.361674704956 -68.3328807013539 14900.3256799538 T 6 CATAB v2.0g-lin.ifort 2021-Apr-15 22:25:19 2021-Apr-15 22:25
2096-Oct-27 06:43 03:21 Earth 0.0874889991136993 0.0846749802256902 0.0903511474677308 3.74510452212697 3.73696371923853 2486908.780122883 200.957823203781 174710.625257217 333.979936272891 36.0245557004547 21510.0629012103 T 6 CATAB v2.0g-lin.ifort 2021-Apr-15 22:25:19 2021-Apr-15 22:25
2097-Oct-19 03:18 1_05:56 Earth 0.251090986182066 0.24269320366912 0.259497625741608 7.85691025942227 7.85555953493188 2487265.637480959 1795.70942488373 425533.7041095 1374.56439664189 -10.1523249111564 3007.80940397697 T 6 CATAB v2.0g-lin.ifort 2021-Apr-15 22:25:19 2021-Apr-15 22:25
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