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JPL Small-Body Database Browser
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(2021 AA)
Classification: Apollo [NEO]          SPK-ID: 54103879
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.


Orbital Elements at Epoch 2459217.5 (2021-Jan-03.0) TDB
Reference: JPL 3 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .5923004827158876 0.00082257  
a 1.014981114757335 0.0010983 au
q .4138073105390557 0.00038818 au
i 24.11566188557896 0.052128 deg
node 100.9943284061478 0.00041354 deg
peri 236.1767582171123 0.020966 deg
M 54.42893488354152 0.14342 deg
tp 2459161.030660985356
(2020-Nov-07.53066099)
0.057176 TDB
period 373.49549626074
1.02
0.60621
0.00166
d
yr
n .963867044192365 0.0015644 deg/d
Q 1.616154918975614 0.0017487 au
  Orbit Determination Parameters
   # obs. used (total)      25  
   data-arc span      1 day  
   first obs. used      2021-01-02  
   last obs. used      2021-01-03  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      8  
   norm. resid. RMS      .30742  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-28 06:19:17  

Additional Information
 Earth MOID = .000171206 au 
 Jupiter MOID = 3.86886 au 
 T_jup = 5.776 
[ 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 26.98   .29685 E2021-HE4 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
1946-Apr-24 23:13 1_14:49 Venus 0.130003736087163 0.121667233732807 0.161455424592139 26.5603121901828 26.5596832851379 2431935.467699522 2329.19573816407 3009038.30331519 510.022297044092 69.3790876137675 24862.8940169836 T 3 CATAB v2.0g-lin.ifort 2021-Apr-28 06:19:17 2021-Apr-28 06:19
2013-Dec-31 15:33 7_08:00 Earth 0.332614962031426 0.196234656000215 0.508474401218949 15.7376746395531 15.7371656169862 2456658.147994452 10559.6319418652 9707212.33831018 747.85456338639 -31.8331097310722 16441.8796528441 T 3 CATAB v2.0g-lin.ifort 2021-Apr-28 06:19:17 2021-Apr-28 06:19
2014-Dec-30 03:25 3_22:25 Earth 0.285824377900317 0.16257329327527 0.444637831354793 16.154888273526 16.1543112189521 2457021.642215408 5664.9345706712 8690323.00646424 352.013565449494 -30.7271365140808 21243.0807964726 T 3 CATAB v2.0g-lin.ifort 2021-Apr-28 06:19:17 2021-Apr-28 06:19
2015-Dec-29 12:12 1_04:24 Earth 0.237315514778489 0.123658781145538 0.37282878489213 16.8033195346479 16.8026513449521 2457386.008117579 1703.76992211392 7196611.97906433 304.846192565548 -25.4413350212931 46754.8567377735 T 3 CATAB v2.0g-lin.ifort 2021-Apr-28 06:19:17 2021-Apr-28 06:19
2016-Dec-28 15:52 12:52 Earth 0.187979846818169 0.0874257074767693 0.297898559083207 17.6861715427505 17.6853700915706 2457751.160769615 771.836307610241 5654255.81250489 572.707393707928 -17.9673392082116 29429.2847114855 T 3 CATAB v2.0g-lin.ifort 2021-Apr-28 06:19:17 2021-Apr-28 06:19
2017-Dec-29 09:04 1_07:00 Earth 0.138506155546729 0.0574818946964561 0.222470339443854 18.7094295374076 18.7084012969913 2458116.877960010 1859.98210533855 4235579.48769302 610.922921046498 -11.0271062548007 8171.33426637954 T 3 CATAB v2.0g-lin.ifort 2021-Apr-28 06:19:17 2021-Apr-28 06:19
2018-Dec-30 13:26 1_07:17 Earth 0.0898554122415526 0.032929610157741 0.147414555156733 19.8210058321059 19.8195097383267 2458483.060034841 1877.1468071129 2879177.4013463 456.334090326787 -5.77747542448636 3243.53590862047 T 3 CATAB v2.0g-lin.ifort 2021-Apr-28 06:19:17 2021-Apr-28 06:19
2019-Dec-31 23:58 19:57 Earth 0.0425013396608828 0.0126147438754424 0.0724461965431764 21.01249441023 21.0095106565869 2458849.498452318 1196.76670832494 1493839.69233534 222.583397912422 -2.12026359170609 1056.34561539848 T 3 CATAB v2.0g-lin.ifort 2021-Apr-28 06:19:17 2021-Apr-28 06:19
2021-Jan-01 13:16 00:01 Earth 0.00158559620415201 0.00157530061438774 0.00159589122501197 22.2152685842377 22.1394964583729 2459216.052728328 1.10898611517979 511.187624063113 7.34697179437771 2.95845092124828 574.125621832359 T 3 CATAB v2.0g-lin.ifort 2021-Apr-28 06:19:17 2021-Apr-28 06:19
2021-Jan-01 15:49 00:02 Moon 0.00366371508941453 0.00365401675163021 0.00367341357315924 22.938530229885 22.9381402563035 2459216.158751138 1.52932411590597 484.994596065004 14.3168886623134 -4.36574433539382 2978.25226984354 T 3 CATAB v2.0g-lin.ifort 2021-Apr-28 06:19:17 2021-Apr-28 06:19
2021-Dec-22 14:58 1_00:30 Venus 0.123520846426666 0.119027992630147 0.139020164136429 22.8487335949051 22.8479641564901 2459571.123764990 1470.3670061597 1935893.10719932 325.994497061931 -74.5045738615008 28209.8641540765 T 3 CATAB v2.0g-lin.ifort 2021-Apr-28 06:19:17 2021-Apr-28 06:19
2022-Jan-06 12:05 1_03:22 Earth 0.134777765126434 0.105288489578949 0.164292969881349 25.8560419869523 25.8552773795763 2459586.003561056 1641.52193788281 1474108.13319638 677.429990178771 3.54718574728997 1749.80112415273 T 3 CATAB v2.0g-lin.ifort 2021-Apr-28 06:19:17 2021-Apr-28 06:19
2023-Jan-12 02:03 2_10:51 Earth 0.267162080114447 0.209242782124352 0.325182852994852 29.7593189403752 29.7589838075265 2459956.585705677 3531.28780010924 2902369.24075463 1203.64159423982 5.01437743581609 2740.38623848114 T 3 CATAB v2.0g-lin.ifort 2021-Apr-28 06:19:17 2021-Apr-28 06:19
2023-Nov-27 01:48 9_21:59 Mercury 0.0834031800821098 0.049266807251236 0.23604171615587 21.9176035635921 21.9175229977334 2460275.574715449 14278.8762576171 8157592.78310426 4662.70626279641 36.2799404237272 1555.16799090052 T 3 CATAB v2.0g-lin.ifort 2021-Apr-28 06:19:17 2021-Apr-28 06:19
2024-Jan-17 23:18 3_19:35 Earth 0.397290040728958 0.312774621905901 0.482011714539345 33.8265522145785 33.8263539485912 2460327.470728731 5494.61073401813 4243663.98763022 1610.56582870779 5.96838989391057 3622.88078394283 T 3 CATAB v2.0g-lin.ifort 2021-Apr-28 06:19:17 2021-Apr-28 06:19
2114-Jan-17 08:56 9_18:20 Earth 0.361743963301098 0.270102151377778 0.470083328782595 32.7210110243792 32.7207859190151 2493198.872414613 14060.137100137 6328872.25512525 1080.95605333577 36.2910574278045 25476.4245334505 T 3 CATAB v2.0g-lin.ifort 2021-Apr-28 06:19:17 2021-Apr-28 06:19
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]
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