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(2021 AO)
Classification: Apollo [NEO]          SPK-ID: 54104255
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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .6445923677786606 0.0002906  
a 2.67700576258621 0.002208 au
q .9514282795236461 7.4283e-06 au
i 4.159474010059315 0.0010184 deg
node 260.2108929583916 0.003114 deg
peri 149.8628463539361 0.0031821 deg
M 4.44612621682309 0.0063636 deg
tp 2459180.741604585062
(2020-Nov-27.24160459)
0.003846 TDB
period 1599.824656903286
4.38
1.9793
0.005419
d
yr
n .2250246603254866 0.00027841 deg/d
Q 4.402583245648774 0.0036313 au
  Orbit Determination Parameters
   # obs. used (total)      77  
   data-arc span      28 days  
   first obs. used      2021-01-03  
   last obs. used      2021-01-31  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      7  
   norm. resid. RMS      .5352  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 23:22:27  

Additional Information
 Earth MOID = .00690936 au 
 Jupiter MOID = 1.03344 au 
 T_jup = 3.038 
[ 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 22.90   .32743 E2021G84 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
2018-Aug-02 16:23 3_17:13 Jupiter 1.20260447635645 1.18161121968604 1.22363350933405 4.97821444148723 4.83466360392204 2458333.182438450 5352.56967811985 1098961.52664876 1165.77219803147 18.2440143220813 24101.2845657568 T 14 CATAB v2.0g-lin.ifort 2021-Apr-15 23:22:28 2021-Apr-15 23:22
2020-Dec-25 16:16 < 00:01 Earth 0.137741685270923 0.137597577215788 0.137885793280402 14.6556347735639 14.6543148101652 2459209.177498288 0.600349892736076 7184.99677618689 32.593160831263 0.3684164475689 3458.03666274893 T 14 CATAB v2.0g-lin.ifort 2021-Apr-15 23:22:28 2021-Apr-15 23:22
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]
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