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(2020 AL2)
Classification: Apollo [NEO]          SPK-ID: 3978223
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

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Orbit Diagram
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Note: This Java-based orbit viewer will eventually be retired.

Note: Make sure you have Java enabled on your browser to see the applet. This applet is provided as a 3D orbit visualization tool. The applet 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. For accurate long-term ephemerides, please instead use our Horizons system.

Note: If the applet is not working, here are some notes that might help.
Orbit Viewer

Additional Notes: the orbits shown in the applet are color coded. The planets are white lines, and the asteroid/comet is a blue line. The bright white line indicates the portion of the orbit that is above the ecliptic plane, and the darker portion is below the ecliptic plane. Likewise for the asteroid/comet orbit, the light blue indicates the portion above the ecliptic plane, and the dark blue the portion below the ecliptic plane.

Orbit Viewer applet originally written and kindly provided by Osamu Ajiki (AstroArts), and further modified by Ron Baalke (JPL).

Orbital Elements at Epoch 2458854.5 (2020-Jan-06.0) TDB
Reference: JPL 1 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .7759535959474056 0.0029517  
a 2.271351783331763 0.02553 au
q .5088881993939288 0.00098471 au
i 3.057646608876883 0.013701 deg
node 103.6809562050897 0.0066257 deg
peri 102.3034867591097 0.0077668 deg
M 346.0892796159492 0.2627 deg
tp 2458902.813906061480
0.097833 TDB
period 1250.331090119147
n .2879237370364795 0.0048543 deg/d
Q 4.033815367269597 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.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      9  
   norm. resid. RMS      .54714  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-07 11:42:07  

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 8.712270252795325E-6 -2.905747461518831E-6 -.0002887681914003738 1.954737481401935E-5 -2.136931270533827E-5 4.042962787301841E-5
q -2.905747461518831E-6 9.696522799413274E-7 9.631299234162711E-5 -6.516017786708353E-6 7.063298589590409E-6 -1.347809625259988E-5
tp -.0002887681914003738 9.631299234162711E-5 .009571230797212407 -.0006478833999458769 .0007080404337963171 -.001340014689701648
node 1.954737481401935E-5 -6.516017786708353E-6 -.0006478833999458769 4.390020684271761E-5 -4.839485396946665E-5 9.077440355661809E-5
peri -2.136931270533827E-5 7.063298589590409E-6 .0007080404337963171 -4.839485396946665E-5 6.032378022484176E-5 -9.994401407947651E-5
i 4.042962787301841E-5 -1.347809625259988E-5 -.001340014689701648 9.077440355661809E-5 -9.994401407947651E-5 .0001877164199070397

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
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_15:40 Jupiter 1.46466595143988 1.4226722536245 1.55581056740403 9.1789051503241 9.11568380857351 2438381.347044716 2379.66366209125 13884248.449244 14531.0611326213 76.751097129377 7889.54619695651 T 1 CATAB v2.0f-lin.ifort 2020-Jan-07 11:42:09 2020-Jan-07 11:42
2020-Jan-10 06:10 00:01 Earth 0.0159318034212603 0.0157410707737164 0.0161225336186759 24.7866414447066 24.7798932305596 2458858.756895584 1.15738106529671 9505.89934945162 31.7476105364765 -0.0489414150363897 214.462914404495 T 1 CATAB v2.0f-lin.ifort 2020-Jan-07 11:42:09 2020-Jan-07 11:42
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]
FirstGov 2020-Sep-29 14:40 UT
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