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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 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04857520092913742 6.3024e-08  
a 2.988233318664983 2.974e-08 AU
q 2.843079284787689 1.9485e-07 AU
i 9.460548072745702 5.9568e-06 deg
node 200.1758229531491 4.0265e-05 deg
peri 291.1117491851671 7.5294e-05 deg
M 350.5337485853539 6.255e-05 deg
tp 2457050.113026021561
(2015-Jan-27.61302602)
0.00032776 JED
period 1886.775301586453
5.17
2.8167e-05
7.712e-08
d
yr
n .1908017344181376 2.8484e-09 deg/d
Q 3.133387352542278 3.1185e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1073  
   data-arc span      12264 days (33.58 yr)  
   first obs. used      1981-07-26  
   last obs. used      2015-02-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .46778  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Mar-09 15:12:50  

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
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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