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(2020 AL2)
Classification: Apollo [NEO]          SPK-ID: 3978223
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 2458854.5 (2020-Jan-06.0) TDB
Reference: JPL 2 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .7759535988984564 0.0029517  
a 2.27135181489079 0.02553 au
q .5088881997617409 0.00098471 au
i 3.057646588241859 0.013701 deg
node 103.6809556144807 0.0066257 deg
peri 102.3034871118968 0.0077668 deg
M 346.0892799332236 0.2627 deg
tp 2458902.813905966479
(2020-Feb-23.31390597)
0.097833 TDB
period 1250.331116178012
3.42
21.08
0.05771
d
yr
n .2879237310356964 0.0048543 deg/d
Q 4.033815430019839 0.04534 au
  Orbit Determination Parameters
   # obs. used (total)      37  
   data-arc span      2 days  
   first obs. used      2020-01-05  
   last obs. used      2020-01-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      9  
   norm. resid. RMS      .54714  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 22:13:30  

Additional Information
 Earth MOID = .00580291 au 
 Jupiter MOID = .936829 au 
 T_jup = 3.123 
[ hide covariance matrix ]
Orbit Covariance (6×6)
  e q tp node peri i
e 8.712271049151283E-6 -2.905747693156206E-6 -.0002887682156930954 1.954738364301125E-5 -2.136932350246078E-5 4.042963136778429E-5
q -2.905747693156206E-6 9.696523458179194E-7 9.631299931789103E-5 -6.516020654630076E-6 7.063302113033884E-6 -1.347809726134784E-5
tp -.0002887682156930954 9.631299931789103E-5 .009571231532707166 -.0006478836878623703 .0007080407865220879 -.001340014795780869
node 1.954738364301125E-5 -6.516020654630076E-6 -.0006478836878623703 4.390024246974884E-5 -4.839489554685497E-5 9.077444408760643E-5
peri -2.136932350246078E-5 7.063302113033884E-6 .0007080407865220879 -4.839489554685497E-5 6.032382779260207E-5 -9.994406360766698E-5
i 4.042963136778429E-5 -1.347809726134784E-5 -.001340014795780869 9.077444408760643E-5 -9.994406360766698E-5 .0001877164351817235

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 25.6   .43039 E2020A92 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
1963-Dec-17 20:20 1_13:09 Jupiter 1.46466591817883 1.42434728131205 1.55390332509633 9.17890530281868 9.1156839610355 2438381.347035181 2229.07025602919 13832005.774866 14578.227228227 77.0831657970276 7877.77841392956 T 2 CATAB v2.0g-lin.ifort 2021-Apr-15 22:13:30 2021-Apr-15 22:13
2020-Jan-10 06:10 00:01 Earth 0.015931803412717 0.0157410707553896 0.0161225336199161 24.7866415133551 24.779893299222 2458858.756895590 1.15738109569396 9505.89983711463 31.7476102447977 -0.0489414447811915 214.462903724627 T 2 CATAB v2.0g-lin.ifort 2021-Apr-15 22:13:30 2021-Apr-15 22:13
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]
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