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(2020 AH1)
Classification: Apollo [NEO]          SPK-ID: 3973547
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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 5 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .430379226889157 0.00064007  
a 1.713831867727377 0.0019169 au
q .9762342334768682 5.1131e-06 au
i 4.531579647112875 0.0051712 deg
node 298.1366603187087 0.0023389 deg
peri 207.9258786744326 0.001737 deg
M 48.86471683846813 0.080583 deg
tp 2458889.264443058124
(2020-Feb-09.76444306)
0.0031892 TDB
period 819.5033776917423
2.24
1.3749
0.003764
d
yr
n .439290440771575 0.00073701 deg/d
Q 2.451429501977885 0.0027419 au
  Orbit Determination Parameters
   # obs. used (total)      44  
   data-arc span      21 days  
   first obs. used      2019-12-29  
   last obs. used      2020-01-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      7  
   norm. resid. RMS      .32545  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Apr-14 06:59:38  

Additional Information
 Earth MOID = .0143716 au 
 Jupiter MOID = 2.57582 au 
 T_jup = 4.069 
[ hide covariance matrix ]
Orbital Elements at Epoch 2458852.5 (2020-Jan-04.0) TDB
Reference: JPL 5 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4314495199273781 0.00063748  
q .9763833874373036 5.6502e-06 au
tp 2458889.198665800409
(2020-Feb-09.69866580)
0.0029226 TDB
node 298.1637470019909 0.0022266 deg
peri 207.8154920170271 0.0021549 deg
i 4.532378084139919 0.0051666 deg
  Orbit Determination Parameters
   # obs. used (total)      44  
   data-arc span      21 days  
   first obs. used      2019-12-29  
   last obs. used      2020-01-19  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      7  
   norm. resid. RMS      .32545  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Apr-14 06:59:38  

Additional Information
 Jupiter MOID = 2.57582 au 
 T_jup = 4.069 
Orbit Covariance (6×6)
  e q tp node peri i
e 4.06380541746867E-7 -3.572619798698892E-9 -1.858852632650347E-6 1.419076167551076E-6 1.364077258184429E-6 3.293580649497806E-6
q -3.572619798698892E-9 3.192426894917965E-11 1.620165177640863E-8 -1.247275147797621E-8 -1.217126957250397E-8 -2.896480326149109E-8
tp -1.858852632650347E-6 1.620165177640863E-8 8.541335196139945E-6 -6.491767460315449E-6 -6.190291036082346E-6 -1.506258370783692E-5
node 1.419076167551076E-6 -1.247275147797621E-8 -6.491767460315449E-6 4.95760307998918E-6 4.760280215652549E-6 1.150049105669428E-5
peri 1.364077258184429E-6 -1.217126957250397E-8 -6.190291036082346E-6 4.760280215652549E-6 4.643685088156639E-6 1.105956418518004E-5
i 3.293580649497806E-6 -2.896480326149109E-8 -1.506258370783692E-5 1.150049105669428E-5 1.105956418518004E-5 2.66938420897469E-5

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 24.5   .43214 E2020A63 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
2020-Jan-18 12:30 < 00:01 Earth 0.0406329612066306 0.0404716817880121 0.040794238004996 8.00893637180875 8.00074453668236 2458867.020730453 0.305496825760603 8025.7938261927 24.9855299009346 0.0851307198161381 454.980078443437 T 5 CATAB v2.0f-lin.ifort 2020-Apr-14 06:59:40 2020-Apr-14 07:00
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]
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