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(2020 HW9)
Classification: Apollo [NEO]          SPK-ID: 54016922
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 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .8308448744695517 6.5609e-08  
a 1.948245953738694 2.1791e-08 au
q .3295557888688567 1.2449e-07 au
i 22.05481706069612 1.2091e-05 deg
node 136.4577712225385 1.9796e-05 deg
peri 309.3488679148041 1.5409e-05 deg
M 32.28496041002109 7.9582e-06 deg
tp 2458911.423763700307
(2020-Mar-02.92376370)
2.0949e-05 TDB
period 993.2626418193094
2.72
1.6664e-05
4.562e-08
d
yr
n .3624419009060947 6.0809e-09 deg/d
Q 3.566936118608531 3.9896e-08 au
  Orbit Determination Parameters
   # obs. used (total)      102  
   data-arc span      3271 days (8.96 yr)  
   first obs. used      2011-06-26  
   last obs. used      2020-06-09  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49322  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-21 08:42:05  

Additional Information
 Earth MOID = .0655489 au 
 Jupiter MOID = 2.07868 au 
 T_jup = 3.302 
[ 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 19.206   .48487 12 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
1903-Mar-11 13:19 00:03 Earth 0.430201315130375 0.43018939111268 0.430213240375765 23.3144653054501 23.3141996506684 2416185.054870757 3.43957947465347 1291.41203418222 14.7573399856545 62.5909628135884 3196591.1906311 T 12 CATAB v2.0f-lin.ifort 2020-Aug-21 08:42:08 2020-Aug-21 08:42
1916-Aug-10 17:11 00:01 Earth 0.159411477076136 0.159394078302051 0.159428875960335 34.2848547357762 34.2843672145323 2421086.216133051 1.26340258778811 892.416390974943 15.2427331199982 13.5440594268651 362359.522712949 T 12 CATAB v2.0f-lin.ifort 2020-Aug-21 08:42:08 2020-Aug-21 08:42
1919-Jun-20 11:42 00:01 Mercury 0.0824763647298415 0.082461411478049 0.0824913201176939 23.4238847220239 23.4238084901759 2422129.987823062 1.0768420681405 997.091588693707 5.84209184474681 -41.5929272910262 1429894.10474063 T 12 CATAB v2.0f-lin.ifort 2020-Aug-21 08:42:08 2020-Aug-21 08:42
1922-Apr-07 10:31 00:02 Earth 0.313662412091219 0.31366186891637 0.313662955466082 29.7698778069808 29.7695924589314 2423151.937866296 1.63050017540735 984.512937813708 24.813342123139 -89.3673340175203 1850893.19534733 T 12 CATAB v2.0f-lin.ifort 2020-Aug-21 08:42:08 2020-Aug-21 08:42
1924-Dec-12 15:01 00:02 Venus 0.14589668625963 0.14589208861322 0.145901287420585 34.7092853584833 34.7088565330564 2424132.126019319 1.5964232686941 1155.06420866446 16.3542049395613 -78.5756694161529 1291787.93952856 T 12 CATAB v2.0f-lin.ifort 2020-Aug-21 08:42:08 2020-Aug-21 08:42
1935-Aug-22 08:53 00:01 Earth 0.0965995394685441 0.0965840987633079 0.0966149806031143 27.3939363484738 27.3929294380422 2428036.870383129 1.10453887490215 834.290485508604 16.0304813246807 -22.647833184568 352114.661221301 T 12 CATAB v2.0f-lin.ifort 2020-Aug-21 08:42:08 2020-Aug-21 08:42
1935-Sep-08 12:24 00:01 Venus 0.0979672437428584 0.0979505543183964 0.0979839346543941 29.6327309438751 29.6319829089764 2428054.016386812 1.29525250085761 1027.14560507707 12.576145186784 -35.8794674712854 691812.823618016 T 12 CATAB v2.0f-lin.ifort 2020-Aug-21 08:42:08 2020-Aug-21 08:42
1941-Apr-23 16:09 00:01 Earth 0.430173485439699 0.430163302148491 0.430183669060797 38.1264943646955 38.1263319060722 2430108.172939127 1.18252483993002 782.046989420877 25.0486653504688 -49.5434476482171 1908297.56577575 T 12 CATAB v2.0f-lin.ifort 2020-Aug-21 08:42:08 2020-Aug-21 08:42
1946-Sep-07 12:18 < 00:01 Mercury 0.0775262029103965 0.0775260122882749 0.0775263951647949 26.0544939328878 26.0544210217919 2432071.012737667 0.873080435987905 927.621625108123 7.60249266391002 89.6435713403231 1532256.10886481 T 12 CATAB v2.0f-lin.ifort 2020-Aug-21 08:42:08 2020-Aug-21 08:42
1952-Mar-08 21:43 00:02 Earth 0.4430951123676 0.443087865128914 0.443102360099172 23.7445848064807 23.7443315543352 2434080.405179232 2.19044525890848 821.289859535263 14.0929753975828 63.9107189357107 3416762.04317316 T 12 CATAB v2.0f-lin.ifort 2020-Aug-21 08:42:08 2020-Aug-21 08:42
1954-Sep-05 10:21 < 00:01 Earth 0.491165296876498 0.491153998787259 0.491176594967774 17.4420046105736 17.4416935878231 2434990.931304917 0.363277126931858 565.591419931215 16.7676513106231 -5.04586699731875 490326.208727866 T 12 CATAB v2.0f-lin.ifort 2020-Aug-21 08:42:08 2020-Aug-21 08:42
1954-Oct-02 11:50 < 00:01 Venus 0.0749997511257008 0.074992726954985 0.0750067771259102 31.4660912304627 31.4651710507035 2435017.993256531 0.856833622835995 681.445992186959 12.6727926464036 -59.0806264549481 763082.830497019 T 12 CATAB v2.0f-lin.ifort 2020-Aug-21 08:42:08 2020-Aug-21 08:42
1965-Aug-09 03:25 < 00:01 Earth 0.20462170203406 0.204611577856848 0.204631826244003 35.5428255442102 35.5424591817622 2438981.642153990 0.774567162710748 521.101854927267 15.0393870819525 14.3528550730291 499897.715534472 T 12 CATAB v2.0f-lin.ifort 2020-Aug-21 08:42:08 2020-Aug-21 08:42
1971-Apr-05 23:30 00:01 Earth 0.323267178181378 0.323266357265584 0.323267999404468 29.1354717190518 29.1351888204513 2441047.478854235 1.0482448455908 624.094147797962 24.6696460478373 86.996045832091 1912338.53298936 T 12 CATAB v2.0f-lin.ifort 2020-Aug-21 08:42:08 2020-Aug-21 08:42
1973-Oct-24 02:45 < 00:01 Venus 0.100151154474752 0.100142582089515 0.100159727661884 36.2477166768986 36.2471184913531 2441979.614391230 0.769255692878947 618.574471630317 12.8650258133889 46.2969154436157 835459.797140268 T 12 CATAB v2.0f-lin.ifort 2020-Aug-21 08:42:08 2020-Aug-21 08:42
1984-Aug-25 09:14 < 00:01 Earth 0.185976568290623 0.185968308970941 0.185984827637887 24.9629801001029 24.9624061651304 2445937.884819254 0.573206677743207 427.087519150099 16.3753622237452 -15.3556414809561 470586.656220717 T 12 CATAB v2.0f-lin.ifort 2020-Aug-21 08:42:08 2020-Aug-21 08:42
1990-Apr-26 07:31 < 00:01 Earth 0.466083874407466 0.466078097731904 0.466089651165635 39.3504236188312 39.3502783408925 2448007.813313213 0.627817174842147 423.642210793605 25.1022772826389 -47.2682168972226 1994640.89020607 T 12 CATAB v2.0f-lin.ifort 2020-Aug-21 08:42:08 2020-Aug-21 08:42
2001-Mar-08 01:08 < 00:01 Earth 0.448489853784158 0.448486691543264 0.448493016117136 24.1018412060812 24.1015947090265 2451976.547519436 0.931842421839764 358.215833463982 13.4743261655554 63.965712265924 3578741.74810836 T 12 CATAB v2.0f-lin.ifort 2020-Aug-21 08:42:08 2020-Aug-21 08:42
2003-Sep-05 08:34 < 00:01 Earth 0.483555242510493 0.483551722161092 0.483558762860004 17.6448671919291 17.644554906508 2452887.856627087 0.173272200902711 175.917067308347 17.3025957755027 -3.72389898492205 593945.95014189 T 12 CATAB v2.0f-lin.ifort 2020-Aug-21 08:42:08 2020-Aug-21 08:42
2009-Apr-20 13:35 < 00:01 Mercury 0.0842758813421895 0.0842736159180293 0.0842781467790398 23.4789129186297 23.4788384893914 2454942.066148997 0.139862357547189 124.199244083759 4.37138488403784 -24.5697856556818 1226700.95982752 T 12 CATAB v2.0f-lin.ifort 2020-Aug-21 08:42:08 2020-Aug-21 08:42
2014-Aug-11 08:29 < 00:01 Earth 0.175879080532553 0.175878626496706 0.175879534568401 34.4351213643824 34.4346814184299 2456880.853146305 0.0956100577780087 22.6571256904542 17.9033300997004 3.54036368476591 1155389.15792916 T 12 CATAB v2.0f-lin.ifort 2020-Aug-21 08:42:08 2020-Aug-21 08:42
2020-Apr-08 01:12 < 00:01 Earth 0.338073067004054 0.338072580324705 0.338073553683481 30.4576061946571 30.4573474282707 2458947.549955861 0.109190418092007 32.7753585948238 22.5857230410912 68.0450207375085 2100138.67101869 T 12 CATAB v2.0f-lin.ifort 2020-Aug-21 08:42:08 2020-Aug-21 08:42
2033-Aug-23 14:17 < 00:01 Earth 0.137618871022367 0.13761402281679 0.137623719297333 26.4431221179284 26.4423899214292 2463833.095051939 0.278559099393785 286.874803688217 16.0026263288601 -32.625244687454 709929.569530282 T 12 CATAB v2.0f-lin.ifort 2020-Aug-21 08:42:08 2020-Aug-21 08:42
2036-Jul-08 08:17 < 00:01 Mercury 0.0777728557125751 0.0777700208591763 0.0777756908517659 24.9393592440518 24.9392833143843 2464882.845349892 0.302300113374311 274.643179369212 7.92675739850053 -59.0595225394019 1275288.40468381 T 12 CATAB v2.0f-lin.ifort 2020-Aug-21 08:42:08 2020-Aug-21 08:42
2039-Apr-26 04:44 < 00:01 Earth 0.472023075081343 0.472019393932986 0.472026756264232 39.2217445630816 39.2216006424631 2465904.697083333 0.476646140559579 273.893174646713 25.0990020759073 -48.1860431489122 2047739.67079447 T 12 CATAB v2.0f-lin.ifort 2020-Aug-21 08:42:08 2020-Aug-21 08:42
2044-Jul-27 07:56 < 00:01 Earth 0.475795341685229 0.475787220921358 0.47580346245094 43.7678585595486 43.7677306103684 2467823.830265804 0.525501688416737 407.6103785134 14.6056355053894 6.55530034292282 570705.256606064 T 12 CATAB v2.0f-lin.ifort 2020-Aug-21 08:42:08 2020-Aug-21 08:42
2050-Mar-13 14:45 00:02 Earth 0.427170699279047 0.427166355506918 0.427175043326338 24.3257350114875 24.3254785942492 2469879.114697117 1.51808816850527 583.774212974736 15.9327824376062 68.2726891381559 3156563.30233575 T 12 CATAB v2.0f-lin.ifort 2020-Aug-21 08:42:08 2020-Aug-21 08:42
2058-Feb-06 01:15 < 00:01 Mars 0.0998737622642155 0.0998649163022512 0.099882608762286 27.1141591415319 27.1140534209651 2472765.551940295 0.679148872525873 572.726784310932 20.349081966204 -39.6563589990261 467925.500647557 T 12 CATAB v2.0f-lin.ifort 2020-Aug-21 08:42:08 2020-Aug-21 08:42
2063-Aug-11 12:28 < 00:01 Earth 0.185027890111588 0.185014762590385 0.185041017803513 34.5680161944412 34.5675996097366 2474778.019470130 0.873935236142455 712.124541123674 15.0425238213548 23.1892939665627 716014.429329403 T 12 CATAB v2.0f-lin.ifort 2020-Aug-21 08:42:08 2020-Aug-21 08:42
2063-Aug-24 13:39 < 00:01 Venus 0.110787587662282 0.110777326636334 0.110797850521566 29.9946045729229 29.9939510821952 2474791.068729737 0.973281943662059 875.927614631551 12.868772133765 -54.2612129791514 1055364.18388363 T 12 CATAB v2.0f-lin.ifort 2020-Aug-21 08:42:08 2020-Aug-21 08:42
2069-Apr-08 13:07 00:01 Earth 0.347860687558146 0.347858685468388 0.347862690261953 30.7755589777313 30.775310090388 2476845.046844853 1.35422769962074 759.198585419494 24.9118306855754 -82.6790697456812 2016164.82911968 T 12 CATAB v2.0f-lin.ifort 2020-Aug-21 08:42:08 2020-Aug-21 08:42
2082-Aug-27 16:52 00:01 Earth 0.233377201414139 0.23335764012428 0.233396762954233 23.8313003097854 23.8308212270119 2481734.202732290 1.08643546478019 1047.26218472731 16.3063848996833 -21.3427102950378 817784.049183244 T 12 CATAB v2.0f-lin.ifort 2020-Aug-21 08:42:08 2020-Aug-21 08:42
2082-Sep-17 11:06 00:01 Venus 0.0974544435932123 0.0974497072801219 0.0974591858795842 32.0219195721462 32.021223707687 2481754.962306881 1.35945013109987 1227.89847185158 12.9163869647209 -78.9190444844923 1109324.0074386 T 12 CATAB v2.0f-lin.ifort 2020-Aug-21 08:42:08 2020-Aug-21 08:42
2093-Jul-28 23:56 00:02 Earth 0.45381963138089 0.453794878925679 0.453844383872474 42.9566188307062 42.9564821523715 2485722.497200916 1.73101352037265 1250.82932201566 14.5888459529125 9.32468538656775 740006.80654699 T 12 CATAB v2.0f-lin.ifort 2020-Aug-21 08:42:08 2020-Aug-21 08:42
2099-Feb-21 08:28 00:02 Mercury 0.0844385799086212 0.0844108849822421 0.0844662921589671 30.3409115820103 30.3408540969435 2487755.852524614 2.04770484291728 2355.01070472216 9.5727117216218 54.0841382420362 1066968.8596099 T 12 CATAB v2.0f-lin.ifort 2020-Aug-21 08:42:08 2020-Aug-21 08:42
2099-Mar-16 13:06 00:04 Earth 0.418057116683975 0.418044050228336 0.418070185950538 24.68594108605 24.6856829020537 2487779.045703986 4.47266216879882 1829.95320729994 16.9829890616229 69.1456624201903 2988155.43913691 T 12 CATAB v2.0f-lin.ifort 2020-Aug-21 08:42:08 2020-Aug-21 08:42
2112-Aug-15 14:45 00:02 Earth 0.130602341318466 0.130576221393196 0.130628466052914 32.2833618429965 32.2827298869246 2492679.114465918 2.24908509368844 1805.23285196271 15.2337033215243 43.8174736205578 880947.345290956 T 12 CATAB v2.0f-lin.ifort 2020-Aug-21 08:42:08 2020-Aug-21 08:42
2118-Apr-14 13:50 00:03 Earth 0.377324841791942 0.377313403720415 0.377336283243872 32.9410296968723 32.9408153282579 2494747.076435411 3.16814885134059 1871.74121560304 25.3379675827344 -72.2721997509346 2065510.00145003 T 12 CATAB v2.0f-lin.ifort 2020-Aug-21 08:42:08 2020-Aug-21 08:42
2131-Aug-28 09:17 00:02 Earth 0.22176955473065 0.221734480825585 0.221804629912151 24.2704718719345 24.2699768360959 2499630.886747499 2.06103307095398 1939.86076635346 16.2518934959486 -25.6272850177475 921668.596690875 T 12 CATAB v2.0f-lin.ifort 2020-Aug-21 08:42:08 2020-Aug-21 08:42
2142-Jul-31 07:15 00:02 Earth 0.444547273248065 0.444516677345006 0.44457786924169 42.4427968454815 42.4426556271312 2503620.802261987 2.16057517647748 1558.16883294962 14.636338711998 11.7189377321 904421.067583595 T 12 CATAB v2.0f-lin.ifort 2020-Aug-21 08:42:08 2020-Aug-21 08:42
2148-Mar-20 09:20 00:04 Earth 0.404550499192031 0.404538868078701 0.404562133329455 25.3194147910439 25.3191546623965 2505679.889152201 4.26956726911637 1838.94691084032 18.4616695576978 71.6212993012203 2791126.7218112 T 12 CATAB v2.0f-lin.ifort 2020-Aug-21 08:42:08 2020-Aug-21 08:42
2161-Jul-20 18:53 00:01 Mars 0.0609586195138061 0.060940909638197 0.0609763311457374 26.6262074252446 26.6260310396185 2510550.286734840 1.23885108350444 1022.91031972016 20.3176819194079 -30.308054178388 226166.946354298 T 12 CATAB v2.0f-lin.ifort 2020-Aug-21 08:42:08 2020-Aug-21 08:42
2161-Aug-14 05:03 00:01 Earth 0.16519492808657 0.165176661702313 0.165213195715231 33.3412743513286 33.3407905839239 2510574.710513609 1.42755439290253 1158.04287570327 15.1480764036187 38.1365107838409 997043.472027486 T 12 CATAB v2.0f-lin.ifort 2020-Aug-21 08:42:08 2020-Aug-21 08:42
2161-Oct-04 11:02 < 00:01 Mercury 0.0881232193889764 0.0880973448893708 0.088149098001842 23.7356061580202 23.7355357480539 2510625.959651420 0.900430896212997 1601.99636604905 7.61473229030537 36.3446793206691 1033699.30351144 T 12 CATAB v2.0f-lin.ifort 2020-Aug-21 08:42:08 2020-Aug-21 08:42
2167-Apr-12 10:58 00:02 Earth 0.376395210912725 0.376390905623972 0.376399517087191 31.9582037569678 31.9579822499902 2512641.957139637 1.67076027215867 941.641278042986 25.2128771737585 -76.9079878327868 2113152.68002193 T 12 CATAB v2.0f-lin.ifort 2020-Aug-21 08:42:08 2020-Aug-21 08:42
2180-Aug-28 19:58 < 00:01 Earth 0.252188415830267 0.252178696096202 0.25219813566442 23.5420525577424 23.5416037637468 2517529.331651072 0.510699218444563 545.680054416727 16.3687505893456 -27.3611217349984 1116710.68439741 T 12 CATAB v2.0f-lin.ifort 2020-Aug-21 08:42:08 2020-Aug-21 08:42
2191-Jul-31 14:29 < 00:01 Earth 0.448316043189588 0.448312679452257 0.448319406927836 42.4763589456621 42.4762190251103 2521518.103629562 0.186168201675566 170.811810460197 14.8737763119293 10.9322335058783 920190.02882352 T 12 CATAB v2.0f-lin.ifort 2020-Aug-21 08:42:08 2020-Aug-21 08:42
2191-Aug-09 14:48 < 00:01 Venus 0.121839741406042 0.121839057825533 0.121840425104034 31.6166882855964 31.6161245603679 2521527.116599845 0.195510271694206 207.780419262459 13.3228876772445 -81.2955285334986 1355809.93419326 T 12 CATAB v2.0f-lin.ifort 2020-Aug-21 08:42:08 2020-Aug-21 08:42
2197-Mar-16 23:50 < 00:01 Earth 0.42583396368895 0.425833088479242 0.425834838904347 25.3084148160047 25.3081675814118 2523573.493066671 0.195466409412346 93.3563793983492 14.8173980731239 63.5530567150175 3289106.71414694 T 12 CATAB v2.0f-lin.ifort 2020-Aug-21 08:42:08 2020-Aug-21 08:42
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]
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