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JPL Small-Body Database Browser
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(2021 KN2)
Classification: Apollo [NEO]          SPK-ID: 54149826
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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 3 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3717435786595887 5.0139e-05  
a 1.40656868161701 8.8734e-05 au
q .8836858062822029 1.5003e-05 au
i 3.766057501711479 0.00027642 deg
node 70.35588055253233 9.4715e-05 deg
peri 237.3635203854141 0.000675 deg
M 351.0550435717651 0.0014884 deg
tp 2459411.639640769278
(2021-Jul-16.13964077)
0.0011124 TDB
period 609.3121549185141
1.67
0.057658
0.0001579
d
yr
n .5908301633144744 5.5909e-05 deg/d
Q 1.929451556951816 0.00012172 au
  Orbit Determination Parameters
   # obs. used (total)      65  
   data-arc span      1 day  
   first obs. used      2021-05-30  
   last obs. used      2021-05-31  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      6  
   norm. resid. RMS      .23451  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jun-01 05:50:56  

Additional Information
 Earth MOID = .000897034 au 
 Jupiter MOID = 3.33914 au 
 T_jup = 4.663 
[ hide covariance matrix ]
Orbital Elements at Epoch 2459365.5 (2021-May-31.0) TDB
Reference: JPL 3 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3800171790329969 4.8176e-05  
q .8749327736047814 1.2746e-05 au
tp 2459412.425914213717
(2021-Jul-16.92591421)
0.0014203 TDB
node 70.50634705436377 0.00010274 deg
peri 238.8362650838705 0.00039835 deg
i 3.187980860721442 0.00036511 deg
  Orbit Determination Parameters
   # obs. used (total)      65  
   data-arc span      1 day  
   first obs. used      2021-05-30  
   last obs. used      2021-05-31  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      6  
   norm. resid. RMS      .23451  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jun-01 05:50:56  

Additional Information
 Jupiter MOID = 3.33914 au 
 T_jup = 4.663 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.320962310780021E-9 -6.061189078972992E-10 -6.68875967293032E-8 -1.967939611218673E-10 -2.028517499871965E-9 1.517352869048464E-8
q -6.061189078972992E-10 1.624585615635974E-10 1.685657525358335E-8 -1.387732283811656E-10 -2.747883552033656E-10 -3.622838001775778E-9
tp -6.68875967293032E-8 1.685657525358335E-8 2.017179015548743E-6 3.363208767806166E-8 1.762547733341042E-7 -4.871986333769755E-7
node -1.967939611218673E-10 -1.387732283811656E-10 3.363208767806166E-8 1.055572785776853E-8 3.506824941409444E-8 -2.010731796406264E-8
peri -2.028517499871965E-9 -2.747883552033656E-10 1.762547733341042E-7 3.506824941409444E-8 1.586816504345042E-7 -7.557811967583017E-8
i 1.517352869048464E-8 -3.622838001775778E-9 -4.871986333769755E-7 -2.010731796406264E-8 -7.557811967583017E-8 1.333085201168932E-7

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 28.63   .35333 MPO622918 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
1941-Oct-06 05:32 4_01:21 Earth 0.0760462773741141 0.0509592160601433 0.108678980455181 11.2664470407155 11.263336704264 2430273.730735639 5840.95237229221 1879806.19779484 422.383164244006 36.5403152345129 15420.2949027453 T 3 CATAB v2.0g-lin.ifort 2021-Jun-01 05:50:57 2021-Jun-01 05:50
1954-Oct-25 05:48 7_18:57 Earth 0.394036495239118 0.234361764744206 0.554829882496065 21.1111622780564 21.1108419705918 2435040.741704978 11216.9792353937 8058570.33657626 487.454183102951 6.82709301582172 12927.7479068331 T 3 CATAB v2.0g-lin.ifort 2021-Jun-01 05:50:57 2021-Jun-01 05:50
1964-May-03 12:33 4_16:12 Earth 0.43675657319689 0.339694975296118 0.533857157531527 22.3060451974906 22.3057717002232 2438519.022880164 6731.74051252159 4845412.80717469 30.6771164776095 -2.39238507273465 75948.522296764 T 3 CATAB v2.0g-lin.ifort 2021-Jun-01 05:50:57 2021-Jun-01 05:50
1966-Jul-14 20:41 9_06:37 Mars 0.0874291644392895 0.0328544740486511 0.146113264457125 5.18814639937818 5.18751520363447 2439321.361468313 13357.3908163278 2979655.81393245 168.45367510941 -14.0629306008278 19796.6604520271 T 3 CATAB v2.0g-lin.ifort 2021-Jun-01 05:50:57 2021-Jun-01 05:50
1972-Apr-17 12:32 3_05:44 Earth 0.492725158145895 0.473237837728531 0.512241130254976 6.77896579742722 6.77816804206621 2441425.021982637 4664.02459521076 990355.345539768 590.717791646463 -11.0107563581955 10804.6211574588 T 3 CATAB v2.0g-lin.ifort 2021-Jun-01 05:50:57 2021-Jun-01 05:50
1972-Sep-28 23:14 3_21:17 Earth 0.0474908240770797 0.0446697422177134 0.0630427098545729 8.95844828208431 8.95218327239714 2441589.468377959 5596.94654725556 1415237.9466636 394.681571172003 -70.1696968342345 18821.5838414078 T 3 CATAB v2.0g-lin.ifort 2021-Jun-01 05:50:57 2021-Jun-01 05:50
1977-May-17 02:00 18:07 Earth 0.181381035159401 0.168171061906196 0.19459157309472 14.8265794174778 14.8255885991667 2443280.583196385 1086.64903183723 658935.331366577 16.9134263766709 -1.49261961157711 37164.3052050475 T 3 CATAB v2.0g-lin.ifort 2021-Jun-01 05:50:57 2021-Jun-01 05:50
1985-Oct-17 01:42 22:17 Earth 0.232009278221431 0.213038951815304 0.251039237016987 16.2507897942773 16.2500830830766 2446355.570750081 1336.75188632434 965446.873633149 445.574888407264 11.0503863774966 13382.9289253112 T 3 CATAB v2.0g-lin.ifort 2021-Jun-01 05:50:57 2021-Jun-01 05:50
1990-Jun-09 01:54 7_01:00 Earth 0.0570577933889788 0.0251561778794589 0.0890106367447085 7.99616938083159 7.99032721230176 2448051.578898645 10140.4211315766 1594365.91390024 53.5989159573578 2.21477741257489 6518.37845137035 T 3 CATAB v2.0g-lin.ifort 2021-Jun-01 05:50:57 2021-Jun-01 05:50
1990-Nov-09 13:20 3_23:22 Earth 0.461484983698329 0.436629021486914 0.486383053938784 6.53071567599166 6.52983153117505 2448205.055578790 5722.15248317747 1259844.65658508 156.653726209364 -10.1772041888311 34097.0641948046 T 3 CATAB v2.0g-lin.ifort 2021-Jun-01 05:50:57 2021-Jun-01 05:50
1990-Dec-26 01:17 4_04:06 Mars 0.0869560781938068 0.0615255733515531 0.112889012940218 5.20666834004532 5.20603596793433 2448251.553469179 6006.37471369052 1322443.72248978 166.077994754118 -13.7767342017749 19606.2489210849 T 3 CATAB v2.0g-lin.ifort 2021-Jun-01 05:50:57 2021-Jun-01 05:50
2003-May-05 18:45 7_03:04 Earth 0.405153247777714 0.382553628137651 0.42776153740018 4.29982866545968 4.29829892010652 2452765.281080644 10263.497512036 1131041.97598671 400.833113125222 -6.651454173395 3418.48091271438 T 3 CATAB v2.0g-lin.ifort 2021-Jun-01 05:50:57 2021-Jun-01 05:50
2003-Sep-01 11:20 8_08:23 Earth 0.121305979157195 0.10855905330955 0.134260341934881 7.38412390899313 7.38114869179813 2452883.972420394 12023.2926933014 687939.15616534 349.831991032846 -21.2281148083109 17581.5419320279 T 3 CATAB v2.0g-lin.ifort 2021-Jun-01 05:50:57 2021-Jun-01 05:50
2008-May-11 01:25 1_02:41 Earth 0.290136952769945 0.268765875694991 0.311509161685498 18.0012691882727 18.0007590213007 2454597.558800749 1600.74695515279 1066100.48127667 17.6839353797165 -1.58840737953027 57737.3691598472 T 3 CATAB v2.0g-lin.ifort 2021-Jun-01 05:50:57 2021-Jun-01 05:50
2015-Jun-02 20:10 05:40 Mars 0.0223739829875415 0.0166356481735729 0.0297929267337165 6.10646032526494 6.10436453469058 2457176.339967018 340.160863000385 450452.082063859 66.9365539939095 -40.9182631455635 32482.8953426458 T 3 CATAB v2.0g-lin.ifort 2021-Jun-01 05:50:57 2021-Jun-01 05:50
2016-Oct-12 09:23 13:24 Earth 0.15221159222959 0.143319997947547 0.161151478905643 13.8092737923115 13.8080061003919 2457673.890853023 803.697732523948 464697.082477759 443.356444285962 16.8973261099656 13580.1629916618 T 3 CATAB v2.0g-lin.ifort 2021-Jun-01 05:50:57 2021-Jun-01 05:50
2021-May-31 00:04 < 00:01 Moon 0.00306038243149719 0.0030601520225877 0.00306061285782034 8.79019684173033 8.78897848469977 2459365.503007155 0.0530569381448635 16.2697997480683 0.390164865186374 -45.162455887025 383214.874615737 T 3 CATAB v2.0g-lin.ifort 2021-Jun-01 05:50:57 2021-Jun-01 05:50
2021-May-31 02:14 < 00:01 Earth 0.000966104201918597 0.000965770442716091 0.000966437948839594 9.81582761780806 9.53071594654618 2459365.592757156 0.0223666296223879 15.7073825025867 0.429172859284624 0.0714273782695406 5442.02521027171 T 3 CATAB v2.0g-lin.ifort 2021-Jun-01 05:50:57 2021-Jun-01 05:50
2021-Nov-09 01:56 00:13 Earth 0.490686272098419 0.490494897773627 0.490877646408288 7.00927110630853 7.00849635986166 2459527.580902211 12.5327521013095 9542.10805989844 510.558798500284 0.117825413348416 5772.18446460016 T 3 CATAB v2.0g-lin.ifort 2021-Jun-01 05:50:57 2021-Jun-01 05:50
2026-Jun-03 06:52 1_04:45 Earth 0.0228794222034419 0.0147299498411153 0.0310385282076048 8.9136414888496 8.90056681772613 2461194.786233800 1724.53163583674 407296.06284585 24.6556881437377 2.85799144486001 6615.52930481386 T 3 CATAB v2.0g-lin.ifort 2021-Jun-01 05:50:57 2021-Jun-01 05:50
2026-Nov-06 11:52 15:24 Earth 0.474990377557549 0.469571484872325 0.480411218174828 6.64965231777228 6.64880867972673 2461350.994125490 923.808065665365 274490.803599285 367.204103809495 -10.181318236641 16475.4764641499 T 3 CATAB v2.0g-lin.ifort 2021-Jun-01 05:50:57 2021-Jun-01 05:50
2031-Jun-28 09:36 5_00:11 Earth 0.109059943910064 0.0999062344651601 0.118251544781808 7.47579502383566 7.47252625160981 2463045.900170798 7211.36950635948 468507.04484758 263.298823259193 12.4762621587026 12060.1761997804 T 3 CATAB v2.0g-lin.ifort 2021-Jun-01 05:50:57 2021-Jun-01 05:50
2031-Oct-20 19:45 5_10:54 Earth 0.392026241953817 0.376971340856654 0.40712623933039 4.06648475586458 4.06481302120197 2463160.322827528 7854.27902734217 780557.677884444 396.180290485931 -16.5146705804318 5951.70711779064 T 3 CATAB v2.0g-lin.ifort 2021-Jun-01 05:50:57 2021-Jun-01 05:50
2046-Apr-20 07:47 8_18:09 Earth 0.491325790768781 0.437718919548324 0.545102580819586 6.38844088396269 6.38759194440319 2468455.824210437 12608.6584951443 2715894.22303813 747.65804204489 -9.75423966984586 7151.28504749692 T 3 CATAB v2.0g-lin.ifort 2021-Jun-01 05:50:57 2021-Jun-01 05:50
2046-Sep-27 01:57 9_10:00 Earth 0.0604808996979988 0.06037943346067 0.101053867792915 9.26629491151843 9.26153937575856 2468615.581145243 13560.3024199851 3875924.24968843 546.752150307983 -86.8541460346157 18191.9628572728 T 3 CATAB v2.0g-lin.ifort 2021-Jun-01 05:50:57 2021-Jun-01 05:50
2051-Oct-07 13:12 9_14:03 Earth 0.132161592013717 0.0595881025349439 0.274600266663193 12.9128277644535 12.9112663722919 2470452.050039164 13803.1689021248 7484546.17709575 574.598303456488 26.8117025642036 14419.3848889446 T 3 CATAB v2.0g-lin.ifort 2021-Jun-01 05:50:57 2021-Jun-01 05:50
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]
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