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120944 (1998 TH23)
Classification: Main-belt Asteroid          SPK-ID: 2120944
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1110350939938038 4.6909e-08  
a 3.1509561000331 2.8992e-08 au
q 2.801089393295576 1.551e-07 au
i 17.87832530036425 6.3363e-06 deg
node 19.75504143167683 1.7588e-05 deg
peri 68.71845215778596 3.9185e-05 deg
M 320.6109621942655 3.4842e-05 deg
tp 2459620.029489809541
(2022-Feb-09.52948981)
0.00019866 TDB
period 2042.969841718737
5.59
2.8196e-05
7.72e-08
d
yr
n .1762140549745631 2.432e-09 deg/d
Q 3.500822806770625 3.2211e-08 au
  Orbit Determination Parameters
   # obs. used (total)      526  
   data-arc span      8142 days (22.29 yr)  
   first obs. used      1998-09-25  
   last obs. used      2021-01-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51711  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 17:08:52  

Additional Information
 Earth MOID = 1.87184 au 
 Jupiter MOID = 1.87697 au 
 T_jup = 3.123 
[ show covariance matrix ]

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 14.85   n/a E2021B55  

120944 (1998 TH23)          Discovered 1998-Oct-14 by Spacewatch at Kitt Peak
Reference: 20060314/Numbers.arcLast Updated: 2006-03-23

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