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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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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 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1107084232310068 4.7012e-08  
a 3.152378749384422 2.9556e-08 au
q 2.803383868613139 1.5522e-07 au
i 17.87337584236033 6.3354e-06 deg
node 19.76573108785343 1.7842e-05 deg
peri 68.44389042560101 3.9373e-05 deg
M 251.0742908231442 3.4733e-05 deg
tp 2459619.062957848192
(2022-Feb-08.56295785)
0.00019973 TDB
period 2044.353592078005
5.60
2.8751e-05
7.872e-08
d
yr
n .1760947819374407 2.4766e-09 deg/d
Q 3.501373630155704 3.2828e-08 au
  Orbit Determination Parameters
   # obs. used (total)      516  
   data-arc span      8055 days (22.05 yr)  
   first obs. used      1998-09-25  
   last obs. used      2020-10-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51659  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 17:53:36  

Additional Information
 Earth MOID = 1.87389 au 
 Jupiter MOID = 1.87866 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 14.8   n/a MPO351700  

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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