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(2021 AN1)
Classification: Apollo [NEO]          SPK-ID: 54104549
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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2353739519139924 0.0001824  
a 1.213345506365943 0.00023487 au
q .9277555794955067 4.1726e-05 au
i 3.046487172600965 0.0021921 deg
node 290.1814211261331 0.00024757 deg
peri 236.9830410818429 0.0029583 deg
M 305.6636707296115 0.017281 deg
tp 2459274.182262208324
(2021-Feb-28.68226221)
0.0020431 TDB
period 488.1745740129008
1.34
0.14175
0.0003881
d
yr
n .7374411105451927 0.00021412 deg/d
Q 1.498935433236379 0.00029015 au
  Orbit Determination Parameters
   # obs. used (total)      47  
   data-arc span      14 days  
   first obs. used      2021-01-04  
   last obs. used      2021-01-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      7  
   norm. resid. RMS      .3953  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jan-18 06:07:28  

Additional Information
 Earth MOID = .00971834 au 
 Jupiter MOID = 3.47441 au 
 T_jup = 5.226 
[ hide covariance matrix ]
Orbital Elements at Epoch 2459223.5 (2021-Jan-09.0) TDB
Reference: JPL 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2355888399459758 0.00018209  
q .9275163497995953 4.1338e-05 au
tp 2459274.209049987221
(2021-Feb-28.70904999)
0.0021205 TDB
node 290.1755270385485 0.00026068 deg
peri 237.0378993365866 0.0028312 deg
i 3.048235470786987 0.0021895 deg
  Orbit Determination Parameters
   # obs. used (total)      47  
   data-arc span      14 days  
   first obs. used      2021-01-04  
   last obs. used      2021-01-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      7  
   norm. resid. RMS      .3953  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jan-18 06:07:28  

Additional Information
 Jupiter MOID = 3.47441 au 
 T_jup = 5.226 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.31579158936157E-8 -7.526658842937887E-9 -3.852264424643317E-7 4.729952985042421E-8 5.144370835014143E-7 3.986827249269867E-7
q -7.526658842937887E-9 1.708789115922238E-9 8.736750312586028E-8 -1.074112742890373E-8 -1.168711656326762E-7 -9.049520934146259E-8
tp -3.852264424643317E-7 8.736750312586028E-8 4.496696531837145E-6 -5.483371591608845E-7 -5.94998236371992E-6 -4.632771142239484E-6
node 4.729952985042421E-8 -1.074112742890373E-8 -5.483371591608845E-7 6.795581315988822E-8 7.349257711117898E-7 5.68754838706223E-7
peri 5.144370835014143E-7 -1.168711656326762E-7 -5.94998236371992E-6 7.349257711117898E-7 8.015504104776572E-6 6.184228457751896E-6
i 3.986827249269867E-7 -9.049520934146259E-8 -4.632771142239484E-6 5.68754838706223E-7 6.184228457751896E-6 4.793855829769696E-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 26.86   .57853 E2021B55 autocmod 2.8

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