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(2021 AS2)
Classification: Apollo [NEO]          SPK-ID: 54104849
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 2459223.5 (2021-Jan-09.0) TDB
Reference: JPL 3 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .7796270556108247 0.00060908  
a 2.291396340090741 0.0053814 au
q .5049617582283766 0.00021018 au
i .8285886629857554 0.000755 deg
node 108.6404031062823 6.0661e-05 deg
peri 96.80182244199986 0.0015867 deg
M 347.3814293828511 0.050173 deg
tp 2459267.907508870615
(2021-Feb-22.40750887)
0.020132 TDB
period 1266.918708819143
3.47
4.4631
0.01222
d
yr
n .2841539851720599 0.001001 deg/d
Q 4.077830921953105 0.009577 au
  Orbit Determination Parameters
   # obs. used (total)      20  
   data-arc span      1 day  
   first obs. used      2021-01-08  
   last obs. used      2021-01-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      8  
   norm. resid. RMS      .2947  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 23:22:39  

Additional Information
 Earth MOID = .000156755 au 
 Jupiter MOID = .881776 au 
 T_jup = 3.102 
[ hide covariance matrix ]
Orbit Covariance (6×6)
  e q tp node peri i
e 3.70978671656519E-7 -1.277786762725689E-7 -1.226190883774516E-5 -2.539911161898683E-8 6.766668717226192E-8 4.515563020904743E-7
q -1.277786762725689E-7 4.417518780416472E-8 4.223398926866392E-6 8.515666067570322E-9 -4.353930245543049E-8 -1.543158747934256E-7
tp -1.226190883774516E-5 4.223398926866392E-6 .0004052915187856071 8.395657172771102E-7 -2.229756105050604E-6 -1.492539596109438E-5
node -2.539911161898683E-8 8.515666067570322E-9 8.395657172771102E-7 3.679782625754016E-9 2.252661313742514E-8 -3.449621890984329E-8
peri 6.766668717226192E-8 -4.353930245543049E-8 -2.229756105050604E-6 2.252661313742514E-8 2.517672148039244E-6 -6.608213076230837E-8
i 4.515563020904743E-7 -1.543158747934256E-7 -1.492539596109438E-5 -3.449621890984329E-8 -6.608213076230837E-8 5.700221812234547E-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 29.51   .37699 E2021D54 autocmod 2.8

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]
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