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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 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04857519899584391 6.3979e-08  
a 2.988233316424524 3.5651e-08 AU
q 2.843079288433192 2.0133e-07 AU
i 9.460548134748466 6.9168e-06 deg
node 200.1758248705407 4.1025e-05 deg
peri 291.1117440846425 8.6506e-05 deg
M 350.5337525444012 7.8885e-05 deg
tp 2457050.113005216229
(2015-Jan-27.61300522)
0.00041368 JED
period 1886.775299464509
5.17
3.3765e-05
9.244e-08
d
yr
n .190801734632721 3.4146e-09 deg/d
Q 3.133387344415856 3.7383e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      943  
   data-arc span      12149 days (33.26 yr)  
   first obs. used      1981-07-26  
   last obs. used      2014-10-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .49043  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Nov-10 13:43:26  

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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