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102231 (1999 TS18)
Classification: Main-belt Asteroid          SPK-ID: 2102231
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 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1598568884166943 4.681e-08  
a 2.429353711390545 1.6157e-08 au
q 2.041004786224105 1.093e-07 au
i 5.425486473407774 5.1739e-06 deg
node 163.1621540867015 3.5695e-05 deg
peri 164.8124181344397 3.8532e-05 deg
M 255.1414875803666 1.725e-05 deg
tp 2459603.342930626660
(2022-Jan-23.84293063)
6.9068e-05 TDB
period 1383.039408810494
3.79
1.3797e-05
3.777e-08
d
yr
n .2602962704509078 2.5967e-09 deg/d
Q 2.817702636556985 1.8739e-08 au
  Orbit Determination Parameters
   # obs. used (total)      543  
   data-arc span      7496 days (20.52 yr)  
   first obs. used      1999-10-09  
   last obs. used      2020-04-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52731  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 18:06:50  

Additional Information
 Earth MOID = 1.02845 au 
 Jupiter MOID = 2.52576 au 
 T_jup = 3.485 
[ 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 16.34   n/a E2021B55  

102231 (1999 TS18)          Discovered 1999-Oct-14 by Beijing Schmidt CCD Asteroid Program at Xinglong
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
Alternate Designations
 1999 TS18 = 2002 LR51 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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