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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1109354731373605 4.6891e-08  
a 3.151175973869835 2.9177e-08 au
q 2.801598776269502 1.5502e-07 au
i 17.87744563460729 6.336e-06 deg
node 19.75544324777825 1.7589e-05 deg
peri 68.64553234454688 3.9204e-05 deg
M 286.1306198923936 3.4724e-05 deg
tp 2459619.746422570497
(2022-Feb-09.24642257)
0.00019881 TDB
period 2043.183683219206
5.59
2.8377e-05
7.769e-08
d
yr
n .1761956122480334 2.4471e-09 deg/d
Q 3.500753171470167 3.2413e-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.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51703  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 09:26:18  

Additional Information
 Earth MOID = 1.87196 au 
 Jupiter MOID = 1.87784 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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