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(2020 UN4)
Classification: Apollo [NEO]          SPK-ID: 54076021
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 2 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4948953188320235 0.00052569  
a 1.89081012816366 0.0019125 au
q .9550570469352863 4.1519e-05 au
i 2.155932711788881 0.0020303 deg
node 213.9588760098873 0.00085726 deg
peri 142.8204265606956 0.01011 deg
M 30.82029780403225 0.048567 deg
tp 2459119.197362074832
(2020-Sep-26.69736207)
0.0080249 TDB
period 949.6647254729361
2.60
1.4408
0.003945
d
yr
n .3790811539522213 0.00057514 deg/d
Q 2.826563209392034 0.002859 au
  Orbit Determination Parameters
   # obs. used (total)      29  
   data-arc span      1 day  
   first obs. used      2020-10-23  
   last obs. used      2020-10-24  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      7  
   norm. resid. RMS      .62918  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 23:13:33  

Additional Information
 Earth MOID = .00524431 au 
 Jupiter MOID = 2.63079 au 
 T_jup = 3.799 
[ 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 28.00   .34702 E2020-UK5 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
1953-Jul-13 12:40 2_02:51 Earth 0.334797543423455 0.296993461158058 0.372660854380384 18.8523576092609 18.8519354568369 2434572.027768310 3050.54827695771 1899637.52821433 5625.63314657389 -6.68127059060918 928.326677876829 T 2 CATAB v2.0g-lin.ifort 2021-Apr-15 23:13:33 2021-Apr-15 23:13
1958-Nov-21 14:08 11:33 Earth 0.396558535992096 0.384776195364515 0.408340883608361 20.9121250973518 20.911803797724 2436529.088606844 693.151106629712 587543.729008505 1823.41228871476 -0.415596889498975 226.478308179638 T 2 CATAB v2.0g-lin.ifort 2021-Apr-15 23:13:33 2021-Apr-15 23:13
1959-Feb-12 04:18 13:35 Mars 0.0997459130007952 0.0958301430651546 0.104545138118749 10.8358851364582 10.8356202547317 2436611.679254872 815.480406319326 516603.954570728 3221.2993741279 65.0119291218543 4285.34215668725 T 2 CATAB v2.0g-lin.ifort 2021-Apr-15 23:13:33 2021-Apr-15 23:13
2020-Oct-21 13:25 < 00:01 Earth 0.0118017833427725 0.0117657991427496 0.0118377665917624 9.1385057506711 9.11376699992427 2459144.058946650 0.34350683309402 1786.5492426154 63.0175533625926 1.2970905940057 672.219627617783 T 2 CATAB v2.0g-lin.ifort 2021-Apr-15 23:13:33 2021-Apr-15 23:13
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]
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