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(2008 HU4)
Classification: Apollo [NEO]          SPK-ID: 3409707
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

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Orbit Diagram
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Note: This Java-based orbit viewer will eventually be retired.

Note: Make sure you have Java enabled on your browser to see the applet. This applet is provided as a 3D orbit visualization tool. The applet 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. For accurate long-term ephemerides, please instead use our Horizons system.

Note: If the applet is not working, here are some notes that might help.
Orbit Viewer

Additional Notes: the orbits shown in the applet are color coded. The planets are white lines, and the asteroid/comet is a blue line. The bright white line indicates the portion of the orbit that is above the ecliptic plane, and the darker portion is below the ecliptic plane. Likewise for the asteroid/comet orbit, the light blue indicates the portion above the ecliptic plane, and the dark blue the portion below the ecliptic plane.

Orbit Viewer applet originally written and kindly provided by Osamu Ajiki (AstroArts), and further modified by Ron Baalke (JPL).


Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0555772479269479 5.1484e-08  
a 1.07142651603657 7.6685e-08 au
q 1.0118795789193 2.2322e-08 au
i 1.391321599319854 4.1881e-06 deg
node 215.2910745660474 2.2822e-05 deg
peri 350.5495729222143 5.0698e-05 deg
M 259.3954584939503 0.00014764 deg
tp 2459113.702781396912
(2020-Sep-21.20278140)
0.0001779 TDB
period 405.0811294680752
1.11
4.3489e-05
1.191e-07
d
yr
n .888710862618378 9.5411e-08 deg/d
Q 1.13097345315384 8.0947e-08 au
  Orbit Determination Parameters
   # obs. used (total)      76  
   data-arc span      2919 days (7.99 yr)  
   first obs. used      2008-04-30  
   last obs. used      2016-04-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46687  
   source      ORB  
   producer      Otto Matic  
   solution date      2017-Jul-31 10:32:46  

Additional Information
 Earth MOID = .00615421 au 
 Jupiter MOID = 3.82572 au 
 T_jup = 5.762 
[ 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 28.3   n/a MPO378285  

[ 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
1904-Mar-02 06:47 00:59 Earth 0.127013217203382 0.125609889289082 0.12841656529756 5.01712131959952 5.01293829979066 2416541.782493414 59.0948978693201 70024.3344605394 7.3297255429617 3.48065078322609 95829.0933952651 T 25 CATAB v2.0e-lin.ifort 2017-Nov-28 10:38:29 2018-Dec-11 15:11
1904-Jul-20 16:45 2_20:04 Earth 0.125203477983606 0.124578601359987 0.125828953105341 1.90704255193103 1.89585044492967 2416682.197889274 4084.23341611198 34055.8998634624 11.2889721403614 21.3688984666782 1084908.34517651 T 25 CATAB v2.0e-lin.ifort 2017-Nov-28 10:38:29 2018-Dec-11 15:11
1911-Dec-24 13:17 4_02:37 Earth 0.12768071246026 0.12666332503834 0.128708812796688 2.18897685518611 2.17942264687291 2419395.053473271 5916.78793106078 77574.6988205941 7.25228724153521 -48.361258277455 1591057.78086883 T 25 CATAB v2.0e-lin.ifort 2017-Nov-28 10:38:29 2018-Dec-11 15:11
1912-May-19 02:52 02:05 Earth 0.131988918322387 0.129613190473037 0.134364991276454 5.19026271239592 5.18637182769667 2419541.619143709 125.013290220103 118953.923691678 2.18468340072811 5.77514095684946 565280.79070804 T 25 CATAB v2.0e-lin.ifort 2017-Nov-28 10:38:29 2018-Dec-11 15:11
1919-Feb-17 08:08 00:12 Earth 0.441900922338648 0.440425540126319 0.443376304469465 14.3696927084347 14.3692730979718 2422006.838570962 12.1883898878672 73570.7349405554 6.67454561041687 -0.531577720503577 67946.7117958588 T 25 CATAB v2.0e-lin.ifort 2017-Nov-28 10:38:29 2018-Dec-11 15:11
1919-Oct-05 01:13 1_08:27 Earth 0.189692708731659 0.189632521477246 0.189755562843163 3.62488686830017 3.62100983460174 2422236.550477833 1946.64962397668 35618.8403710442 3.83433348289403 85.0542386549447 3824316.32939128 T 25 CATAB v2.0e-lin.ifort 2017-Nov-28 10:38:29 2018-Dec-11 15:11
1920-Jun-08 16:00 00:19 Earth 0.479114295412005 0.477841781771832 0.480386842385702 15.3625083666867 15.3621463603171 2422484.166496843 18.5199704232756 63768.0960313016 2.25419024254982 5.69524782838044 2404444.83985175 T 25 CATAB v2.0e-lin.ifort 2017-Nov-28 10:38:29 2018-Dec-11 15:11
1927-Mar-06 05:05 00:14 Earth 0.0882855762682181 0.0880024468290856 0.088568707884617 3.81915504882167 3.81124452367379 2424945.711833113 13.6581576498551 14135.5008054532 7.22402106373984 5.14098609786866 98027.4079917694 T 25 CATAB v2.0e-lin.ifort 2017-Nov-28 10:38:29 2018-Dec-11 15:11
1927-Jul-05 11:36 19:25 Earth 0.105127008372282 0.104954383419286 0.105299657829132 1.31922108556424 1.29986676272218 2425066.983047361 1165.19635621201 8991.19993689418 11.1545514610341 -3.03656106205722 195196.448756051 T 25 CATAB v2.0e-lin.ifort 2017-Nov-28 10:38:29 2018-Dec-11 15:11
1935-Jan-03 12:33 3_07:43 Earth 0.114078081696521 0.113286521509936 0.114875532589323 1.81068967464011 1.79774409788734 2427806.022998010 4783.28906776954 57041.6758404161 8.16016204260124 -44.9417846613001 1428212.02335148 T 25 CATAB v2.0e-lin.ifort 2017-Nov-28 10:38:29 2018-Dec-11 15:11
1935-May-18 06:06 01:50 Earth 0.103761500142532 0.10220515983179 0.105318097328258 4.34657139228493 4.34065952406508 2427940.754163898 110.391241496822 78041.1155548989 2.26249488092069 6.91651047766783 515271.266575903 T 25 CATAB v2.0e-lin.ifort 2017-Nov-28 10:38:29 2018-Dec-11 15:11
1942-Feb-15 12:49 00:08 Earth 0.499146669660725 0.498041806298997 0.50025153320475 16.049538759848 16.0492061568779 2430406.034133018 8.01895297028465 55097.1267208215 6.3686646393327 -0.697488689816178 109647.418988376 T 25 CATAB v2.0e-lin.ifort 2017-Nov-28 10:38:29 2018-Dec-11 15:11
1942-Oct-17 02:11 1_00:46 Earth 0.188277528396707 0.188253215582127 0.188303437320419 3.63121283758993 3.62731345894107 2430649.590656957 1485.78927171688 27379.4752417362 3.65010572184347 -87.3711943011579 3384510.59990738 T 25 CATAB v2.0e-lin.ifort 2017-Nov-28 10:38:29 2018-Dec-11 15:11
1943-Jun-06 07:27 00:16 Earth 0.418730090102971 0.417723308058035 0.419736893248114 13.6130280851775 13.6125606397648 2430881.810202895 16.1603282911983 50423.0127467413 2.3218960009993 5.37014669873834 1863133.08375156 T 25 CATAB v2.0e-lin.ifort 2017-Nov-28 10:38:29 2018-Dec-11 15:11
1950-Feb-28 10:38 00:11 Earth 0.175950813611452 0.175465101375647 0.176436526798735 6.46765461397938 6.46531279732756 2433340.942771717 10.5010850369582 24229.1234586805 7.14962641545798 2.46055544770319 97314.1124365992 T 25 CATAB v2.0e-lin.ifort 2017-Nov-28 10:38:29 2018-Dec-11 15:11
1950-Aug-06 13:36 16:46 Earth 0.144345545434561 0.144171424631331 0.144519814988184 2.44061271249699 2.43303767835782 2433500.066372532 1006.11489640359 11358.6012213699 9.65379370024802 39.6669660764684 2477377.86676848 T 25 CATAB v2.0e-lin.ifort 2017-Nov-28 10:38:29 2018-Dec-11 15:11
1958-Jan-14 22:29 1_03:03 Earth 0.101428678004288 0.101197023143664 0.101660938334368 1.3673042262525 1.34795469995845 2436218.437065342 1623.33021896446 17004.4197377763 8.6190442220703 -44.6875436726944 1231257.96232244 T 25 CATAB v2.0e-lin.ifort 2017-Nov-28 10:38:29 2018-Dec-11 15:11
1958-May-15 07:45 00:39 Earth 0.0799596795565589 0.0795807839579707 0.0803385998345739 3.61836654993188 3.60914545515783 2436338.823136461 39.0826295227566 19024.2875868518 2.18045714579 8.09552333470594 486812.126950745 T 25 CATAB v2.0e-lin.ifort 2017-Nov-28 10:38:29 2018-Dec-11 15:11
1965-Feb-17 20:59 00:02 Earth 0.428073688393921 0.427852875763314 0.42829450103139 13.9699089965452 13.9694634355443 2438809.374319956 2.0352202256515 11011.3657601139 6.54760044305119 -0.750624222227076 94670.4286870551 T 25 CATAB v2.0e-lin.ifort 2017-Nov-28 10:38:29 2018-Dec-11 15:11
1965-Oct-01 06:52 04:40 Earth 0.191165444620292 0.191151551025942 0.191179392913537 3.64834028431958 3.64451789258612 2439034.785917991 280.470602290336 5148.90950657999 3.65670017002317 82.2439155734223 4276871.09878749 T 25 CATAB v2.0e-lin.ifort 2017-Nov-28 10:38:29 2018-Dec-11 15:11
1973-Apr-02 13:34 00:09 Earth 0.0116919049258952 0.0116888608641686 0.0116949491224887 1.30356017902274 1.11511758907495 2441775.065250033 8.50174013467031 164.85470770776 4.82954359630644 33.9042616173184 141394.815176286 T 25 CATAB v2.0e-lin.ifort 2017-Nov-28 10:38:29 2018-Dec-11 15:11
1981-Dec-25 13:45 01:17 Earth 0.113776049528943 0.1137640557818 0.113788045478804 2.03044098081093 2.01887426905591 2444964.072997226 76.5428080409928 992.308222758496 3.47621134739427 -52.344712107591 1935731.92526647 T 25 CATAB v2.0e-lin.ifort 2017-Nov-28 10:38:29 2018-Dec-11 15:11
1982-May-23 20:40 00:02 Earth 0.118177283743604 0.118148135029199 0.118206432450626 4.66596025531959 4.66112563500399 2445113.361219878 1.60343531166476 1452.78028739959 1.49419014001469 2.51228235239015 309497.577053958 T 25 CATAB v2.0e-lin.ifort 2017-Nov-28 10:38:29 2018-Dec-11 15:11
1990-Feb-22 11:07 < 00:01 Earth 0.432035458958337 0.432009923963119 0.432060993953506 13.9329400276403 13.9324973810786 2447944.963004842 0.179704789645068 1273.30396751857 4.02164281723793 0.501849413587667 109196.9084908 T 25 CATAB v2.0e-lin.ifort 2017-Nov-28 10:38:29 2018-Dec-11 15:11
1990-Oct-21 14:38 00:39 Earth 0.163620208863235 0.16361927755337 0.163621141921562 3.25134403177908 3.24633161261716 2448186.110003768 39.4893204693849 847.752774350933 3.47761464763645 -86.8593780270743 3064683.20290194 T 25 CATAB v2.0e-lin.ifort 2017-Nov-28 10:38:29 2018-Dec-11 15:11
1991-Jun-07 22:41 < 00:01 Earth 0.360128934512806 0.360104597350968 0.360153271680398 11.7554553700767 11.7548259704078 2448415.445479145 0.4173917823042 1215.71669580406 1.61352182880901 3.47328518249659 1418109.41766642 T 25 CATAB v2.0e-lin.ifort 2017-Nov-28 10:38:29 2018-Dec-11 15:11
1999-Mar-04 07:48 < 00:01 Earth 0.181054629249944 0.181036834723124 0.181072423780263 6.50139481440386 6.49913083846785 2451241.825161022 0.348821762949522 888.230831090754 4.48618960585204 3.19885742853865 209036.99309839 T 25 CATAB v2.0e-lin.ifort 2017-Nov-28 10:38:29 2018-Dec-11 15:11
1999-Aug-20 12:10 00:38 Earth 0.135872562749879 0.135867369364723 0.135877756821565 2.4067197724753 2.39855785684746 2451411.006973362 37.7381379521101 547.719486317174 6.91072792861897 61.55208615855 1533925.60183777 T 25 CATAB v2.0e-lin.ifort 2017-Nov-28 10:38:29 2018-Dec-11 15:11
2008-Apr-25 02:28 < 00:01 Moon 0.00606995487171284 0.00606993814096301 0.00606997160246302 1.46575755825028 1.46206932898181 2454581.602866583 0.101415691374362 1.61077720843831 0.834907675851703 88.0515715941438 859323.402032424 T 25 CATAB v2.0e-lin.ifort 2017-Nov-28 10:38:29 2018-Dec-11 15:11
2008-Apr-27 01:15 < 00:01 Earth 0.00631831323019408 0.00631827380291584 0.00631835265753015 1.46899453875879 1.14652962839469 2454583.552073157 0.0788784011120176 2.60237910680178 1.58726491898403 36.4295776180969 622885.213530707 T 25 CATAB v2.0e-lin.ifort 2017-Nov-28 10:38:29 2018-Dec-11 15:11
2016-Apr-16 09:31 < 00:01 Earth 0.0126869585099471 0.0126867882023413 0.0126871288177209 1.43680105139003 1.28232713739775 2457494.896499222 0.144251880589277 8.92613102613105 3.12591980637425 22.7706479967522 266240.998037183 T 25 CATAB v2.0e-lin.ifort 2017-Nov-28 10:38:29 2018-Dec-11 15:11
2026-Mar-28 18:22 < 00:01 Earth 0.128839657032279 0.128819630111696 0.128859683969509 4.69969122311984 4.69528874776175 2461128.265311935 0.641304876792343 1001.33099493714 5.16162089479178 5.19887865880816 204261.218205899 T 25 CATAB v2.0e-lin.ifort 2017-Nov-28 10:38:29 2018-Dec-11 15:11
2026-Aug-31 01:38 00:56 Earth 0.106746264825324 0.106740027644256 0.106752506673385 1.88713979991003 1.87386629460484 2461283.568230875 56.0530808160493 1159.85249708864 7.71270536065198 74.120190912406 1071388.37874238 T 25 CATAB v2.0e-lin.ifort 2017-Nov-28 10:38:29 2018-Dec-11 15:11
2036-Mar-19 01:34 < 00:01 Earth 0.349765874122272 0.349752545447002 0.349779202798595 11.1984945648617 11.1978142836596 2464771.565309427 0.11317209632183 665.33017762439 4.00415852942172 2.72995269959767 436418.963664601 T 25 CATAB v2.0e-lin.ifort 2017-Nov-28 10:38:29 2018-Dec-11 15:11
2036-Nov-07 01:13 00:23 Earth 0.134018439660723 0.13401826818923 0.13401861202455 2.78000494305167 2.77284413676906 2465004.550658340 23.3783723986825 550.751102698951 1.10397467978798 -89.1027100774419 4651182.34230337 T 25 CATAB v2.0e-lin.ifort 2017-Nov-28 10:38:29 2018-Dec-11 15:11
2037-Jun-20 07:37 < 00:01 Earth 0.303220439830604 0.303208168261507 0.303232711399546 9.81747528080025 9.81658017604215 2465229.817455262 0.21249773760699 611.840418285653 6.95557674564269 0.198281499163615 51707.810459011 T 25 CATAB v2.0e-lin.ifort 2017-Nov-28 10:38:29 2018-Dec-11 15:11
2047-Jan-18 17:55 00:09 Earth 0.0937136488838567 0.0937128179889794 0.0937144797819941 1.53652325294951 1.51790626592454 2468729.246530129 8.83451073726573 50.2399577051052 10.0068930889704 -30.6818780399374 530327.220641631 T 25 CATAB v2.0e-lin.ifort 2017-Nov-28 10:38:29 2018-Dec-11 15:11
2047-Jun-05 21:37 < 00:01 Earth 0.0923339192470307 0.092331691152829 0.0923361473415788 3.62303271885417 3.61505907202576 2468867.400848103 0.205878411651494 111.465700378991 5.93913031536729 -6.42173793452465 169377.53400162 T 25 CATAB v2.0e-lin.ifort 2017-Nov-28 10:38:29 2018-Dec-11 15:11
2057-Feb-20 08:27 03:43 Earth 0.0732570858640076 0.0732469577981175 0.0732672557236519 0.558286887843044 0.48881591309874 2472414.852165803 222.836508598039 3035.74304168667 1.92839489068198 73.1329208417283 604116.215106998 T 25 CATAB v2.0e-lin.ifort 2017-Nov-28 10:38:29 2018-Dec-11 15:11
2057-May-29 21:52 00:03 Earth 0.0525941221617748 0.0525804152481028 0.0526078290926311 2.422262188737 2.40125629352466 2472513.411092447 2.65623998911567 685.141021210875 5.02341231257007 -9.22115512416295 146082.637415826 T 25 CATAB v2.0e-lin.ifort 2017-Nov-28 10:38:29 2018-Dec-11 15:11
2066-Mar-21 15:26 < 00:01 Earth 0.321795117351385 0.321700814572673 0.321889420182923 10.4159926810029 10.4151977145285 2475731.143057743 0.941106475907083 4706.99292854581 3.7924929834991 2.67204626717835 406242.88328522 T 25 CATAB v2.0e-lin.ifort 2017-Nov-28 10:38:29 2018-Dec-11 15:11
2066-Oct-23 03:50 02:46 Earth 0.145350865241955 0.145348467804988 0.145353315152946 2.96800270518324 2.96181993609319 2475946.659969188 165.625632610253 4361.38582240461 1.11942381187782 88.390207770981 4248414.91901343 T 25 CATAB v2.0e-lin.ifort 2017-Nov-28 10:38:29 2018-Dec-11 15:11
2067-Jun-25 22:41 00:02 Earth 0.392404249491012 0.392300643854554 0.392507855148171 12.4638413416719 12.4632965427562 2476192.445086151 1.52587528584401 5168.35018172776 7.2669723420673 1.73041092228192 174593.802118624 T 25 CATAB v2.0e-lin.ifort 2017-Nov-28 10:38:29 2018-Dec-11 15:11
2076-May-09 13:16 04:13 Earth 0.011088006590241 0.0109415072158008 0.0112343804146082 1.35200532972147 1.16073802217085 2479433.052515114 253.330695164168 6960.53573461077 1.68021251913725 -3.87815515348588 24812.0798812302 T 25 CATAB v2.0e-lin.ifort 2017-Nov-28 10:38:29 2018-Dec-11 15:11
2076-May-12 05:31 04:16 Moon 0.00982422834676175 0.0097516989033399 0.00989783061758382 1.16148236114707 1.15860664727766 2479435.730192162 256.103856153303 6288.83761758267 3.13600269628505 54.4596408695327 403720.387390802 T 25 CATAB v2.0e-lin.ifort 2017-Nov-28 10:38:29 2018-Dec-11 15:11
2084-Jan-05 09:33 1_19:00 Earth 0.147171580332304 0.146661891444576 0.147681851129762 2.6894634181308 2.68272330323247 2482229.897947192 2579.70155594987 29329.5822847954 7.4741577210922 -29.5687592284867 1332069.67166412 T 25 CATAB v2.0e-lin.ifort 2017-Nov-28 10:38:29 2018-Dec-11 15:11
2084-Jun-18 22:48 01:41 Earth 0.188610937475975 0.187141184410292 0.190080760599084 6.71849039672318 6.7163873846848 2482395.450215783 100.517527418521 73516.2664250707 7.81191093788691 -4.81449321823016 187160.130261908 T 25 CATAB v2.0e-lin.ifort 2017-Nov-28 10:38:29 2018-Dec-11 15:11
2091-Mar-19 05:44 00:22 Earth 0.484911026340828 0.482302500719579 0.487519551040531 15.4134122585191 15.4130557609892 2484859.738669677 21.7581839063425 130072.331812197 4.69392877986248 0.211618793241646 42474.6174350611 T 25 CATAB v2.0e-lin.ifort 2017-Nov-28 10:38:29 2018-Dec-11 15:11
2091-Nov-13 15:09 2_07:06 Earth 0.184512792170888 0.184377085950357 0.184657455384227 3.636365470621 3.63239213102491 2485099.131197959 3306.20587738682 64521.2507387649 4.58473904714602 -83.7800366832772 3387197.22279065 T 25 CATAB v2.0e-lin.ifort 2017-Nov-28 10:38:29 2018-Dec-11 15:11
2092-Jul-01 06:52 01:05 Earth 0.418898124110073 0.416238908346805 0.421557340917051 13.4364048127933 13.4359314125115 2485329.786246479 64.9781623528065 132608.46398652 8.00012150692752 0.777257827606761 77675.8876096202 T 25 CATAB v2.0e-lin.ifort 2017-Nov-28 10:38:29 2018-Dec-11 15:11
2099-Mar-28 01:11 01:04 Earth 0.248837574924444 0.245151301148309 0.252523824163306 8.4911658281592 8.48990469389141 2487790.549155949 64.4314632735377 183777.647304011 5.47178891466275 0.308752225248519 22405.4403240664 T 25 CATAB v2.0e-lin.ifort 2017-Nov-28 10:38:29 2018-Dec-11 15:11
2099-Sep-24 02:13 3_23:05 Earth 0.162488734099164 0.161726050955696 0.163300116543495 3.00912282251755 3.00366847296035 2487970.592279720 5705.17056606462 145788.66845552 8.23947589015823 74.3215488470159 1392135.66384165 T 25 CATAB v2.0e-lin.ifort 2017-Nov-28 10:38:29 2018-Dec-11 15:11
2107-Apr-13 01:36 16:44 Earth 0.0369077776965943 0.0332465843344288 0.0405616893829647 2.23954366563337 2.20707273086292 2490727.566548512 1003.63978677568 180499.188231906 5.65864355418501 -4.36757340875021 45574.6122458 T 25 CATAB v2.0e-lin.ifort 2017-Nov-28 10:38:29 2018-Dec-11 15:11
2115-Mar-28 22:39 10:45 Earth 0.275750428592064 0.222877591479509 0.328628413030131 9.23409805273215 9.23305158392375 2493634.443768628 644.775520473831 2637352.22194318 4.98674078678033 1.69054749869924 162884.006939662 T 25 CATAB v2.0e-lin.ifort 2017-Nov-28 10:38:29 2018-Dec-11 15:11
2124-Jun-28 09:08 1_07:51 Earth 0.303313373513058 0.199137549212388 0.407484711302643 10.0256411054982 10.0247648563218 2497013.880535042 1911.18428336106 5194389.54978636 8.27328962288165 0.782578977188346 49952.4467597329 T 25 CATAB v2.0e-lin.ifort 2017-Nov-28 10:38:29 2018-Dec-11 15:11
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