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(2021 HQ1)
Classification: Amor [NEO]          SPK-ID: 54139081
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 3 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1501817374852009 9.7564e-05  
a 1.234174432923102 0.0001661 au
q 1.048823972226898 2.0746e-05 au
i 7.988572708112516 0.003944 deg
node 33.76222389630799 0.00049763 deg
peri 190.1745597522413 0.0029264 deg
M 259.8824657157429 0.018237 deg
tp 2459339.774269520798
(2021-May-05.27426952)
0.002804 TDB
period 500.7987600366939
1.37
0.1011
0.0002768
d
yr
n .7188516201070916 0.00014512 deg/d
Q 1.419524893619306 0.00019104 au
  Orbit Determination Parameters
   # obs. used (total)      23  
   data-arc span      18 days  
   first obs. used      2021-04-17  
   last obs. used      2021-05-05  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      6  
   norm. resid. RMS      .66299  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-07 05:55:24  

Additional Information
 Earth MOID = .0428302 au 
 Jupiter MOID = 3.55083 au 
 T_jup = 5.170 
[ 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 26.36   .32373 E2021-HA9 autocmod 2.9c

[ 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
1947-Apr-19 01:09 6_11:09 Earth 0.184486793975805 0.0494257333139692 0.325528052716566 7.59565799313836 7.59375631926219 2432294.547782684 9308.75458434509 7081987.50298384 100.441229458241 9.0577242012525 32012.0686389274 T 3 CATAB v2.0g-lin.ifort 2021-May-07 05:55:24 2021-May-07 05:55
1954-Nov-03 21:12 6_16:56 Earth 0.428495858405643 0.425298763736746 0.434106564287984 7.87197027269717 7.87118031456504 2435050.383211466 9656.43867232193 1619820.2245966 54.9260923515287 -82.1865602106307 1498463.64687488 T 3 CATAB v2.0g-lin.ifort 2021-May-07 05:55:24 2021-May-07 05:55
1958-Apr-08 23:19 2_15:09 Earth 0.409714099408917 0.346037716967618 0.473395835697109 13.4591010364668 13.4586178406233 2436302.471736986 3789.39371155905 3176276.00716414 92.0762653947419 1.45533296933423 12759.720314088 T 3 CATAB v2.0g-lin.ifort 2021-May-07 05:55:24 2021-May-07 05:55
1958-Sep-01 09:36 7_22:54 Earth 0.329120690113148 0.312478561837728 0.348587909105539 5.18803673740265 5.18647603730446 2436447.900007963 11453.893893726 1768685.29859064 255.702476088883 -59.2993068236171 73320.5380792201 T 3 CATAB v2.0g-lin.ifort 2021-May-07 05:55:24 2021-May-07 05:55
1962-Feb-11 12:14 9_13:38 Earth 0.290744313197566 0.275016655787164 0.307184439538783 3.06077984516236 3.05778426042636 2437707.009610657 13778.3830468938 1076650.02619125 220.790624805724 42.1393706825094 44418.2297688149 T 3 CATAB v2.0g-lin.ifort 2021-May-07 05:55:24 2021-May-07 05:55
1962-May-23 10:16 3_11:09 Earth 0.297662703686911 0.265747526925839 0.329741520903865 9.46823749580846 9.46729204165182 2437807.927767617 4989.19067631043 1633084.46503222 824.396064220549 -12.2802111668526 7639.10556277428 T 3 CATAB v2.0g-lin.ifort 2021-May-07 05:55:24 2021-May-07 05:55
1965-Nov-21 08:28 04:29 Earth 0.428358134649994 0.426964833376288 0.42975177567726 7.73469891191728 7.73389467407453 2439085.852801472 269.476983311664 72044.0463233572 204.151169765749 -15.3308269290932 63089.6021873434 T 3 CATAB v2.0g-lin.ifort 2021-May-07 05:55:24 2021-May-07 05:55
1969-Sep-25 13:36 2_14:14 Earth 0.379291108827325 0.376496697372196 0.382463875434837 6.74181729513773 6.74077522660683 2440490.067003422 3734.36310500465 615731.667907685 101.979435855256 -76.0194618111987 219812.716239003 T 3 CATAB v2.0g-lin.ifort 2021-May-07 05:55:24 2021-May-07 05:55
1976-Dec-07 04:12 6_12:19 Earth 0.417156751923341 0.409887348073082 0.425785177506617 7.24227083375957 7.24138884152056 2443119.675255356 9378.75843709464 1252262.17894582 140.512603969878 71.5244380699048 268099.733166292 T 3 CATAB v2.0g-lin.ifort 2021-May-07 05:55:24 2021-May-07 05:55
1980-Oct-09 13:21 7_10:02 Earth 0.405485429930143 0.397072977348757 0.417368159637931 7.40541455092005 7.40452716251531 2444522.056194857 10682.0057743587 1939842.92083999 77.7903114860101 -74.8179499004386 340977.210998457 T 3 CATAB v2.0g-lin.ifort 2021-May-07 05:55:24 2021-May-07 05:55
1984-Apr-24 19:42 5_03:21 Earth 0.0652192290705935 0.0420854825586742 0.150862483705331 5.08707957526772 5.07904225301102 2445815.320939321 7401.06218520571 4740956.50691168 89.4329369330653 40.2639159571646 54494.6762046924 T 3 CATAB v2.0g-lin.ifort 2021-May-07 05:55:24 2021-May-07 05:55
1987-Dec-21 22:58 8_23:32 Earth 0.395542535123905 0.381592528455046 0.411156915860955 6.56814310498791 6.56711742833843 2447151.456602256 12931.9955745948 1477276.96311678 133.227587309998 60.0194544065992 198313.435995356 T 3 CATAB v2.0g-lin.ifort 2021-May-07 05:55:24 2021-May-07 05:55
1991-Oct-25 01:09 6_21:43 Earth 0.421238765666247 0.41584631730996 0.429378026063192 7.74708300129633 7.74626647776766 2448554.547909488 9943.22163922318 1730893.69358316 35.8883915686552 -78.7253522823668 907071.291649374 T 3 CATAB v2.0g-lin.ifort 2021-May-07 05:55:24 2021-May-07 05:55
1995-Apr-15 14:06 3_12:03 Earth 0.268319161010327 0.18636258845348 0.350456493060332 9.704933712678 9.70391044090942 2449823.087477609 5043.24920089203 4106065.75307037 89.9026697372219 4.72438411648417 26908.9791990574 T 3 CATAB v2.0g-lin.ifort 2021-May-07 05:55:24 2021-May-07 05:55
1999-Jun-06 00:34 5_22:02 Earth 0.43825593800829 0.367767938889404 0.508904074353922 13.4994595896157 13.4990092134397 2451335.523344577 8522.38405539067 3543656.71252107 1000.83678544539 -6.71260238814246 5550.05554610639 T 3 CATAB v2.0g-lin.ifort 2021-May-07 05:55:24 2021-May-07 05:55
2002-Nov-11 01:59 4_20:46 Earth 0.43011873493688 0.429502022569623 0.431943929111086 7.85775048264522 7.85696208094729 2452589.582570977 7006.19293102795 1139020.00559862 80.5659427699661 -86.9309084249948 741943.66325739 T 3 CATAB v2.0g-lin.ifort 2021-May-07 05:55:24 2021-May-07 05:55
2006-Apr-06 08:20 2_01:42 Earth 0.492616249279823 0.439820236314104 0.545412798980357 15.7011167270672 15.7007722360947 2453831.846905563 2981.55760981299 2632861.95339466 82.5985131122428 0.74564880103567 8978.38505991239 T 3 CATAB v2.0g-lin.ifort 2021-May-07 05:55:24 2021-May-07 05:55
2006-Sep-12 04:12 5_21:36 Earth 0.349523216780792 0.337616549583882 0.363225322686037 5.91033581854083 5.9090458724344 2453990.675188048 8495.54849014911 1403743.51334429 229.686020486863 -62.8929488431324 95726.2956323833 T 3 CATAB v2.0g-lin.ifort 2021-May-07 05:55:24 2021-May-07 05:55
2010-May-14 08:04 4_03:11 Earth 0.217627320450491 0.177287179327833 0.258487138375178 7.21672039184028 7.21502367207391 2455330.836013714 5951.24946931578 2092912.46757573 705.843622463697 -14.5010000789338 7489.13345074302 T 3 CATAB v2.0g-lin.ifort 2021-May-07 05:55:24 2021-May-07 05:55
2013-Nov-28 02:14 2_06:32 Earth 0.425272263473202 0.424572721240837 0.426174427460259 7.57197417284482 7.57114668827302 2456624.592775824 3271.52001649375 464667.327318755 115.518661509968 85.0722082716109 389531.569891334 T 3 CATAB v2.0g-lin.ifort 2021-May-07 05:55:24 2021-May-07 05:55
2017-Oct-02 05:23 1_06:09 Earth 0.390102344927581 0.387089824869355 0.393210139391072 7.04343893261933 7.0424691398498 2458028.724202723 1808.53290891819 340182.239209035 190.666481123434 -63.3534907320673 146562.669973997 T 3 CATAB v2.0g-lin.ifort 2021-May-07 05:55:24 2021-May-07 05:55
2021-Apr-28 17:55 < 00:01 Earth 0.0464495077143244 0.0463772330276494 0.0465217811477894 4.54550852641965 4.53287126733213 2459333.246686046 0.782165574811789 3583.82142846208 107.04359061837 -0.090682858431308 1036.49116322203 T 3 CATAB v2.0g-lin.ifort 2021-May-07 05:55:24 2021-May-07 05:55
2024-Dec-13 11:13 1_06:54 Earth 0.41040177472162 0.407790986007109 0.413055696919706 6.9814630771148 6.98053307141883 2460657.967244070 1853.94234645554 247498.980542667 158.58492444095 57.9835100946553 195051.659708085 T 3 CATAB v2.0g-lin.ifort 2021-May-07 05:55:24 2021-May-07 05:55
2028-Oct-15 19:47 2_05:37 Earth 0.412550245230842 0.410558057169812 0.414846150450141 7.57869170348608 7.5778394560837 2462060.324425447 3217.397980367 568412.181062555 38.6675856102444 -79.157949484848 623678.737476242 T 3 CATAB v2.0g-lin.ifort 2021-May-07 05:55:24 2021-May-07 05:55
2032-Apr-21 01:53 1_22:13 Earth 0.133662615173152 0.0948055738439237 0.173480652633149 6.4644234742946 6.46133903500693 2463343.578408854 2772.64936896822 2041566.47950947 91.6021047909788 15.4479406907326 44043.5023771571 T 3 CATAB v2.0g-lin.ifort 2021-May-07 05:55:24 2021-May-07 05:55
2035-Dec-30 02:38 5_04:03 Earth 0.383288022094061 0.373215269460011 0.393721403650622 6.11951043600225 6.11837435121447 2464691.609431403 7443.48135530045 777985.967345259 138.044080021029 48.9287664296998 139215.776110516 T 3 CATAB v2.0g-lin.ifort 2021-May-07 05:55:24 2021-May-07 05:55
2039-Oct-30 20:19 4_06:43 Earth 0.42614764743406 0.424007829449472 0.42929729817252 7.82382144808769 7.82302224801809 2466092.346636560 6162.82223413883 1043177.98373873 46.4377442683555 -82.7294653244786 1972511.31577233 T 3 CATAB v2.0g-lin.ifort 2021-May-07 05:55:24 2021-May-07 05:55
2043-Apr-13 12:18 2_10:38 Earth 0.328580158065361 0.267372566459086 0.389823848532266 11.2923599320848 11.2916418069629 2467353.012735794 3518.4701787079 3057902.07891685 86.3272894798355 3.26299885987549 24021.4690193376 T 3 CATAB v2.0g-lin.ifort 2021-May-07 05:55:24 2021-May-07 05:55
2047-Jun-02 12:43 7_03:34 Earth 0.382050465874601 0.319023187464055 0.445774725476856 11.9060359809834 11.9054502002056 2468864.029897350 10293.7571493905 3263422.38506829 1014.33009261318 -14.2595392604925 9660.16202953209 T 3 CATAB v2.0g-lin.ifort 2021-May-07 05:55:24 2021-May-07 05:55
2050-Nov-16 07:04 4_21:12 Earth 0.431096448921719 0.430733651770807 0.432559948455621 7.8301383764501 7.82934898872966 2470126.794328965 7031.912993618 1099210.31014775 109.565061848682 87.6556864684486 468471.636893406 T 3 CATAB v2.0g-lin.ifort 2021-May-07 05:55:24 2021-May-07 05:55
2054-Sep-19 04:38 6_06:47 Earth 0.362624261645373 0.350819999383455 0.376606044229292 6.3225540711894 6.32139181232658 2471529.692928157 9046.65080435677 1542770.18854613 197.208277756951 -65.3086668718141 120468.036196663 T 3 CATAB v2.0g-lin.ifort 2021-May-07 05:55:24 2021-May-07 05:55
2058-May-09 21:45 5_23:59 Earth 0.160836681097789 0.104203542880058 0.220187979982187 5.89500524490403 5.89219433702644 2472858.406292204 8638.51652418847 3074858.08514426 577.494702257748 -18.575736560481 8952.90787665343 T 3 CATAB v2.0g-lin.ifort 2021-May-07 05:55:24 2021-May-07 05:55
2061-Dec-03 02:06 4_05:48 Earth 0.423288079481859 0.419767467560741 0.427414946407206 7.43208932829402 7.43124231515728 2474161.587293708 6108.13108946834 821446.489741063 137.279297296235 76.5746122986525 298565.583242564 T 3 CATAB v2.0g-lin.ifort 2021-May-07 05:55:24 2021-May-07 05:55
2065-Oct-06 17:31 3_08:46 Earth 0.397392866662597 0.391621173645605 0.403857343335883 7.23503530411004 7.2341085181375 2475565.229825689 4845.80520680817 882068.751540225 122.623871084904 -69.7526469738677 228390.784823198 T 3 CATAB v2.0g-lin.ifort 2021-May-07 05:55:24 2021-May-07 05:55
2069-Apr-26 19:03 1_14:39 Earth 0.047557299506426 0.0431772708866585 0.065617666526957 4.76137679389728 4.74959530280364 2476863.293571922 2319.33227073354 1471241.47074662 61.3560781568656 65.2768357560346 71286.8539642204 T 3 CATAB v2.0g-lin.ifort 2021-May-07 05:55:24 2021-May-07 05:55
2072-Dec-21 04:10 4_06:51 Earth 0.398526301975657 0.390179403186412 0.407253057111549 6.59615201715401 6.59513834367693 2478197.673721208 6170.60868903711 746857.284655786 134.379390441922 55.2547620403411 187732.14765118 T 3 CATAB v2.0g-lin.ifort 2021-May-07 05:55:24 2021-May-07 05:55
2076-Oct-25 13:21 4_10:40 Earth 0.420951800703376 0.418552345506849 0.424477089017489 7.76586324135392 7.76504813732595 2479602.056028342 6400.27825909086 1095989.49183334 34.3915242986512 -82.2453053822732 1325400.54612298 T 3 CATAB v2.0g-lin.ifort 2021-May-07 05:55:24 2021-May-07 05:55
2080-Apr-14 19:31 2_19:00 Earth 0.280374073060511 0.207517434477227 0.353339530842653 10.0830411361626 10.0820985886186 2480869.313347817 4020.09440305545 3646199.38214607 76.1963206986356 4.28600020703477 30010.6407183731 T 3 CATAB v2.0g-lin.ifort 2021-May-07 05:55:24 2021-May-07 05:55
2084-Jun-04 08:50 8_00:00 Earth 0.41084667372401 0.328104188434168 0.494603832960983 12.6890368701226 12.688525762134 2482380.868192507 12959.7363060269 4274440.3936826 914.065534631223 -13.511948539106 11096.5291866793 T 3 CATAB v2.0g-lin.ifort 2021-May-07 05:55:24 2021-May-07 05:55
2087-Nov-15 22:29 7_06:28 Earth 0.430578307331479 0.430038154482873 0.433457442776037 7.81301921472694 7.81222714514945 2483640.436985257 10467.5093304323 1635377.20432434 94.5671636251263 87.1352378652352 588084.06324498 T 3 CATAB v2.0g-lin.ifort 2021-May-07 05:55:24 2021-May-07 05:55
2098-Dec-05 21:54 9_02:34 Earth 0.420797172373201 0.412676610047454 0.431561851250659 7.33299790777915 7.33213436560016 2487678.412832333 13114.2078702873 1730052.83466963 119.785574032276 74.1639528624961 329596.647618514 T 3 CATAB v2.0g-lin.ifort 2021-May-07 05:55:24 2021-May-07 05:55
2102-Oct-11 23:29 8_05:19 Earth 0.401766639529547 0.390500170732643 0.417172450190926 7.36750755313836 7.3666073419053 2489083.478720244 11839.1836834493 2142140.65676922 107.976687468234 -71.8230419008403 256408.560710325 T 3 CATAB v2.0g-lin.ifort 2021-May-07 05:55:24 2021-May-07 05:55
2106-Apr-25 08:14 4_16:25 Earth 0.0857309795615172 0.0402819249429164 0.173470405038401 5.51273126305278 5.50709060214937 2490374.843287494 6745.08538047892 4640255.93527439 74.7888478182109 28.0925058329477 58665.3886750168 T 3 CATAB v2.0g-lin.ifort 2021-May-07 05:55:24 2021-May-07 05:55
2109-Dec-30 01:09 6_07:42 Earth 0.385394493385141 0.374608484036599 0.396697166714807 6.1656258778094 6.16450445552956 2491719.547586237 9102.4603473212 893699.897361413 127.130385024211 51.964506825558 147562.455729102 T 3 CATAB v2.0g-lin.ifort 2021-May-07 05:55:24 2021-May-07 05:55
2113-Nov-03 00:11 1_23:38 Earth 0.425416558926793 0.422520010117459 0.428503744030552 7.83025319832918 7.82945328240125 2493123.507868125 2858.289024177 473249.964371091 56.4201740006412 -71.6222183609277 585576.254583593 T 3 CATAB v2.0g-lin.ifort 2021-May-07 05:55:24 2021-May-07 05:55
2117-Apr-11 21:16 05:13 Earth 0.383192143541419 0.383035409997865 0.383349004287017 12.8122155071606 12.8116727810401 2494379.386400369 313.107623087441 13507.1699275235 224.090024264596 -54.6152856134713 178354.852019363 T 3 CATAB v2.0g-lin.ifort 2021-May-07 05:55:24 2021-May-07 05:55
2117-Sep-01 12:27 19:24 Earth 0.319461464418276 0.318965847931284 0.319979789657927 5.03441154433879 5.03275456673008 2494522.018689114 1164.36042860617 136692.470789085 70.2327619639157 79.3110696283067 166978.617978565 T 3 CATAB v2.0g-lin.ifort 2021-May-07 05:55:24 2021-May-07 05:55
2121-May-24 19:25 3_08:51 Earth 0.295008843355312 0.259946904113128 0.330150196949204 9.2827330172101 9.28175999170461 2495883.308968300 4850.83453793003 1766942.62339709 863.399610293902 -7.874509050657 4576.91050813807 T 3 CATAB v2.0g-lin.ifort 2021-May-07 05:55:24 2021-May-07 05:55
2124-Nov-26 18:51 5_14:04 Earth 0.4271659636391 0.423755870090652 0.431889160852738 7.62102029559217 7.62020178195361 2497165.285650397 8044.45271124304 1198799.02331771 108.377345863521 80.249731905921 435917.924808532 T 3 CATAB v2.0g-lin.ifort 2021-May-07 05:55:24 2021-May-07 05:55
2128-Oct-03 15:37 8_22:19 Earth 0.386149216693563 0.37432979196387 0.402817802280133 7.00746180445894 7.00647705222212 2498572.150451879 12859.1474933203 2275074.50518426 135.152324109175 -71.6969057133569 195378.401902908 T 3 CATAB v2.0g-lin.ifort 2021-May-07 05:55:24 2021-May-07 05:55
2132-Apr-28 09:26 7_05:00 Earth 0.0445113466928238 0.0439510693168201 0.138499321436814 4.67062819582495 4.65779415496688 2499874.892925114 10379.7782648903 6203021.32438641 46.356374687466 80.9437153363368 84965.374632354 T 3 CATAB v2.0g-lin.ifort 2021-May-07 05:55:24 2021-May-07 05:55
2199-Apr-27 05:00 4_17:57 Earth 0.065150612183672 0.0432668319225622 0.161131788129774 5.12830968490971 5.12032867807245 2524344.708368940 6837.44003800612 5312266.31100885 66.0670924935133 41.6894319813279 67678.2491198979 T 3 CATAB v2.0g-lin.ifort 2021-May-07 05:55:24 2021-May-07 05:55
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