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23708 (1997 TR18)
Classification: Main-belt Asteroid          SPK-ID: 2023708
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04857519858316034 6.4004e-08  
a 2.988233316753847 3.6594e-08 AU
q 2.843079289979713 2.0175e-07 AU
i 9.460549343014943 7.0212e-06 deg
node 200.1758253275894 4.1027e-05 deg
peri 291.111744420747 8.8397e-05 deg
M 350.5337516410335 8.1586e-05 deg
tp 2457050.113009959020
(2015-Jan-27.61300996)
0.00042789 JED
period 1886.775299776412
5.17
3.4659e-05
9.489e-08
d
yr
n .1908017346011796 3.5049e-09 deg/d
Q 3.133387343527982 3.8372e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      935  
   data-arc span      11905 days (32.59 yr)  
   first obs. used      1981-07-26  
   last obs. used      2014-02-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .48943  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-16 14:14:12  

Additional Information
 Earth MOID = 1.87337 AU 
 T_jup = 3.235 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.0 mag n/a MPO296324  

23708 (1997 TR18)          Discovered 1997-Oct-05 by Beijing Schmidt CCD Asteroid Program at Xinglong (327)
Reference: 20010408/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1997 TR18 = 1998 XU84 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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