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120943 (1998 TN22)
Classification: Outer Main-belt Asteroid          SPK-ID: 2120943
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | 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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09128176457235754 4.0021e-08  
a 3.211695973627813 2.9655e-08 au
q 2.91852669788513 1.4067e-07 au
i 3.617000595149824 4.3589e-06 deg
node 209.3512742274935 7.2708e-05 deg
peri 247.2631756494644 7.9259e-05 deg
M 249.8387560069405 3.5557e-05 deg
tp 2459843.819030126088
(2022-Sep-21.31903013)
0.00021179 TDB
period 2102.326030922301
5.76
2.9118e-05
7.972e-08
d
yr
n .1712389014381686 2.3717e-09 deg/d
Q 3.504865249370495 3.2362e-08 au
  Orbit Determination Parameters
   # obs. used (total)      543  
   data-arc span      8087 days (22.14 yr)  
   first obs. used      1998-10-13  
   last obs. used      2020-12-03  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52375  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 17:08:52  

Additional Information
 Earth MOID = 1.93761 au 
 Jupiter MOID = 1.6608 au 
 T_jup = 3.182 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457210.5 (2015-Jul-07.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09019665249373372 3.9061e-08  
q 2.923834718611459 1.378e-07 au
tp 2457707.842544281396
(2016-Nov-15.34254428)
0.0002022 TDB
node 209.9018873311409 7.2124e-05 deg
peri 241.8363824534166 7.9145e-05 deg
i 3.628474084951305 4.3731e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      543  
   data-arc span      8087 days (22.14 yr)  
   first obs. used      1998-10-13  
   last obs. used      2020-12-03  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52375  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 17:08:52  

Additional Information
 Jupiter MOID = 1.6608 au 
 T_jup = 3.182 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.525784211514097E-15 -5.294609323660571E-15 -7.308068874726274E-13 -3.28356306893093E-15 -4.594895580752315E-14 6.834880754082195E-16
q -5.294609323660571E-15 1.898943283823591E-14 4.679189225809333E-12 6.475039058580826E-15 4.824814456073648E-13 -9.283099875963478E-16
tp -7.308068874726274E-13 4.679189225809333E-12 4.088462720168305E-8 -3.89178156617862E-11 6.612448111232291E-9 4.644200059921151E-12
node -3.28356306893093E-15 6.475039058580826E-15 -3.89178156617862E-11 5.201837830974979E-9 -5.19736340997142E-9 -9.003158671020679E-11
peri -4.594895580752315E-14 4.824814456073648E-13 6.612448111232291E-9 -5.19736340997142E-9 6.26390558523063E-9 9.059881076227154E-11
i 6.834880754082195E-16 -9.283099875963478E-16 4.644200059921151E-12 -9.003158671020679E-11 9.059881076227154E-11 1.912385880386839E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.12   n/a E2021B55  

120943 (1998 TN22)          Discovered 1998-Oct-13 by Spacewatch at Kitt Peak
Reference: 20060314/Numbers.arcLast Updated: 2006-03-23

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Alternate Designations
 1998 TN22 = 2000 CD35 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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