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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 2456800.5 (2014-May-23.0) TDB
Reference: JPL 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04807982203083495 6.6127e-08  
a 2.986091747573977 3.6277e-08 AU
q 2.842520987782875 2.0647e-07 AU
i 9.461585104794692 7.6314e-06 deg
node 200.2257343435085 4.2421e-05 deg
peri 291.7149328461837 9.5521e-05 deg
M 311.7254618244963 8.8393e-05 deg
tp 2457053.236970127869
(2015-Jan-30.73697013)
0.00046417 JED
period 1884.747377908676
5.16
3.4345e-05
9.403e-08
d
yr
n .1910070305546506 3.4807e-09 deg/d
Q 3.129662507365079 3.8021e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      930  
   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      .50735  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Mar-22 11:18:04  

Additional Information
 Earth MOID = 1.87215 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 12.9 mag n/a MPO266079  

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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