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JPL Small-Body Database Browser
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(2020 AJ1)
Classification: Apollo [NEO]          SPK-ID: 3973548
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 2458853.5 (2020-Jan-05.0) TDB
Reference: JPL 5 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .6201118366153299 0.00086102  
a 1.439031792146981 0.0025707 au
q .5466711445708669 0.00026247 au
i 22.92310449665496 0.036409 deg
node 102.1595240579351 0.00021221 deg
peri 104.333728051549 0.017451 deg
M 328.8584298932948 0.10613 deg
tp 2458908.043375886639
(2020-Feb-28.54337589)
0.039733 TDB
period 630.5274670451577
1.73
1.6896
0.004626
d
yr
n .5709505434982378 0.0015299 deg/d
Q 2.331392439723095 0.0041648 au
  Orbit Determination Parameters
   # obs. used (total)      112  
   data-arc span      3 days  
   first obs. used      2020-01-04  
   last obs. used      2020-01-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      8  
   norm. resid. RMS      .28215  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 22:13:24  

Additional Information
 Earth MOID = .0299987 au 
 Jupiter MOID = 2.90503 au 
 T_jup = 4.376 
[ hide covariance matrix ]
Orbit Covariance (6×6)
  e q tp node peri i
e 7.4136171539717E-7 -2.259849038243309E-7 -3.421060611234924E-5 -1.823704774211627E-7 -1.502407011797762E-5 3.134520443622195E-5
q -2.259849038243309E-7 6.888855634702255E-8 1.042810681185927E-5 5.557905095791116E-8 4.579234366898393E-6 -9.555347172245924E-6
tp -3.421060611234924E-5 1.042810681185927E-5 .001578675549363385 8.416341594759747E-6 .0006933135025134243 -.001446407473347908
node -1.823704774211627E-7 5.557905095791116E-8 8.416341594759747E-6 4.503357058843853E-8 3.697842087888116E-6 -7.704284910377066E-6
peri -1.502407011797762E-5 4.579234366898393E-6 .0006933135025134243 3.697842087888116E-6 .0003045447553901822 -.0006351265271723107
i 3.134520443622195E-5 -9.555347172245924E-6 -.001446407473347908 -7.704284910377066E-6 -.0006351265271723107 .001325593825045717

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 23.3   .50375 E2020A81 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
2016-Oct-14 17:54 9_01:54 Venus 0.091714096756465 0.0365058764329637 0.294105692641939 25.9778014077941 25.9768899468188 2457676.245684021 13073.5121684642 10357054.4760621 332.366084966436 -23.4617668602663 16349.2403335643 T 5 CATAB v2.0g-lin.ifort 2021-Apr-15 22:13:24 2021-Apr-15 22:13
2018-Jul-24 05:16 5_11:49 Earth 0.15023087624779 0.149348092571559 0.182856546294124 23.1052719295681 23.1045043042566 2458323.719549148 7909.46875220345 4455858.99669739 720.349602298009 83.836521150994 29394.6410695978 T 5 CATAB v2.0g-lin.ifort 2021-Apr-15 22:13:24 2021-Apr-15 22:13
2020-Jan-07 15:00 < 00:01 Earth 0.0346991627302916 0.0345491691348999 0.0348491559197023 22.1660967164986 22.1626322363437 2458856.124992617 0.0735313658118364 7477.22163469257 8.76346592517944 -0.00548014091438811 576.732632647891 T 5 CATAB v2.0g-lin.ifort 2021-Apr-15 22:13:24 2021-Apr-15 22:13
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]
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