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JPL Small-Body Database Browser
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(2021 AT5)
Classification: Apollo [NEO]          SPK-ID: 54105514
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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4603978336276888 0.00011915  
a 1.82691340320229 0.00040432 au
q .9858064301425675 5.1581e-07 au
i 7.660636974096784 0.0015102 deg
node 293.7145771572447 3.3767e-05 deg
peri 172.0714484803613 0.00019484 deg
M 69.68192825739057 0.023197 deg
tp 2459221.920586874504
(2021-Jan-07.42058687)
0.00018863 TDB
period 901.9352692570317
2.47
0.29942
0.0008198
d
yr
n .3991417258763477 0.0001325 deg/d
Q 2.668020376262013 0.00059047 au
  Orbit Determination Parameters
   # obs. used (total)      95  
   data-arc span      4 days  
   first obs. used      2021-01-13  
   last obs. used      2021-01-17  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      6  
   norm. resid. RMS      .37115  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-27 05:49:19  

Additional Information
 Earth MOID = .00545928 au 
 Jupiter MOID = 2.49638 au 
 T_jup = 3.891 
[ hide covariance matrix ]
Orbital Elements at Epoch 2459228.5 (2021-Jan-14.0) TDB
Reference: JPL 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4644777488789055 0.00011749  
q .9855410438978113 6.7823e-07 au
tp 2459221.733349414739
(2021-Jan-07.23334941)
0.00031704 TDB
node 293.7521661040905 8.3483e-06 deg
peri 171.7831215568255 0.00012691 deg
i 7.705176319852986 0.001486 deg
  Orbit Determination Parameters
   # obs. used (total)      95  
   data-arc span      4 days  
   first obs. used      2021-01-13  
   last obs. used      2021-01-17  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      6  
   norm. resid. RMS      .37115  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-27 05:49:19  

Additional Information
 Jupiter MOID = 2.49638 au 
 T_jup = 3.891 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.380498214113243E-8 7.861768710816572E-11 3.542721625820292E-8 9.416408024296401E-10 5.265128043213138E-9 1.745829755528695E-7
q 7.861768710816572E-11 4.599932078039426E-13 2.124956885242549E-10 5.492714102427529E-12 4.30024101255007E-11 9.945665583687535E-10
tp 3.542721625820292E-8 2.124956885242549E-10 1.005117825643848E-7 2.529983717269957E-9 2.514091964357623E-8 4.482387406563835E-7
node 9.416408024296401E-10 5.492714102427529E-12 2.529983717269957E-9 6.96940419016584E-11 4.922628335542891E-10 1.191087654949374E-8
peri 5.265128043213138E-9 4.30024101255007E-11 2.514091964357623E-8 4.922628335542891E-10 1.610581862241309E-8 6.684391559684444E-8
i 1.745829755528695E-7 9.945665583687535E-10 4.482387406563835E-7 1.191087654949374E-8 6.684391559684444E-8 2.208207553891972E-6

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 27.53   .43156 MPO624180 autocmod 2.8

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