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(2021 AS2)
Classification: Apollo [NEO]          SPK-ID: 54104849
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 2459223.5 (2021-Jan-09.0) TDB
Reference: JPL 2 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .779627056242608 0.00060908  
a 2.291396350490767 0.0053814 au
q .5049617590725951 0.00021018 au
i .8285886546427536 0.000755 deg
node 108.640405039045 6.0663e-05 deg
peri 96.80182043480602 0.0015867 deg
M 347.3814294773759 0.050173 deg
tp 2459267.907508840292
(2021-Feb-22.40750884)
0.020132 TDB
period 1266.918717444443
3.47
4.4631
0.01222
d
yr
n .2841539832375132 0.001001 deg/d
Q 4.077830941908939 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.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      8  
   norm. resid. RMS      .2947  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jan-30 06:46:51  

Additional Information
 Earth MOID = .000156755 au 
 Jupiter MOID = .881776 au 
 T_jup = 3.102 
[ 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 29.51   .37699 E2021D54 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
2021-Jan-09 09:38 < 00:01 Earth 0.000717514376865734 0.000715168507517758 0.000719860119809953 24.6163709127055 24.4650515148542 2459223.901113635 0.487543809397602 116.000495585012 3.15472259624904 -1.65005120113932 777.86470464835 T 2 CATAB v2.0f-lin.ifort 2021-Jan-30 06:46:51 2021-Jan-30 06:46
2021-Jan-09 12:11 < 00:01 Moon 0.00126785821926945 0.00126541785272743 0.00127029891503846 23.6871311540212 23.6860398503391 2459224.007427154 0.460885026868349 125.895259241549 3.53099419266831 14.8154945436639 13357.6444606222 T 2 CATAB v2.0f-lin.ifort 2021-Jan-30 06:46:51 2021-Jan-30 06:46
2021-Feb-24 16:31 03:04 Mercury 0.0961473122643108 0.0952710875091782 0.0970243168005444 18.9131645443649 18.9130835557904 2459270.188245529 184.490047288882 45797.1161164032 998.519733292506 -17.3560333851569 4211.41386833585 T 2 CATAB v2.0f-lin.ifort 2021-Jan-30 06:46:51 2021-Jan-30 06:46
2023-Mar-07 19:36 9_02:02 Jupiter 1.84776501381274 1.78975161764997 1.90584386443836 10.0964717322597 10.0509668105791 2460011.316328972 13081.8771802554 2946230.72494671 2419.53992291759 11.2839658401755 9520.92235600278 T 2 CATAB v2.0f-lin.ifort 2021-Jan-30 06:46:51 2021-Jan-30 06:46
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]
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