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(2020 HT1)
Classification: Apollo [NEO]          SPK-ID: 54016607
[ 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 2458958.5 (2020-Apr-19.0) TDB
Reference: JPL 2 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .5725023703176165 0.0015199  
a 2.308987151819554 0.0081142 au
q .9870865343699371 4.0768e-05 au
i 3.166232106926236 0.0062692 deg
node 22.30550824960108 0.0023 deg
peri 222.6519033179055 0.0099735 deg
M 351.4716106970483 0.046577 deg
tp 2458988.859542124961
(2020-May-19.35954212)		 0.0058077 TDB
period 1281.535677692763
3.51		 6.7553
0.0185		 d
yr
n .2809129751644002 0.0014808 deg/d
Q 3.630887769269171 0.01276 au
   Orbit Determination Parameters
   # obs. used (total)      19  
   data-arc span      5 days  
   first obs. used      2020-04-18  
   last obs. used      2020-04-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      8  
   norm. resid. RMS      .36289  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Apr-23 07:00:52  

Additional Information
 Earth MOID = .0205381 au 
 Jupiter MOID = 1.4256 au 
 T_jup = 3.344 
[ 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 25.8   .60789 E2020-HC9 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-Apr-28 03:39 < 00:01 Earth 0.0283238769026883 0.0281317992106118 0.0285159493918981 9.7183994793665 9.70871488673827 2458967.652048867 0.493422375401934 9558.84073456498 29.8933791387041 -0.0482797611175476 281.538776245453 T 2 CATAB v2.0f-lin.ifort 2020-Apr-23 07:00:54 2020-Apr-23 07:00
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]
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