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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 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04838377490585532 6.2498e-08  
a 2.986191971355177 2.9658e-08 au
q 2.841708731187456 1.9244e-07 au
i 9.472528373509856 5.8604e-06 deg
node 200.0977306362049 3.9565e-05 deg
peri 289.7341703617743 7.4415e-05 deg
M 68.24243806272784 6.1508e-05 deg
tp 2457043.204912069986
(2015-Jan-20.70491207)
0.00032262 JED
period 1884.842266868789
5.16
2.8079e-05
7.688e-08
d
yr
n .1909974146526612 2.8454e-09 deg/d
Q 3.130675211522898 3.1092e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1105  
   data-arc span      12373 days (33.88 yr)  
   first obs. used      1981-07-26  
   last obs. used      2015-06-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .46949  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jul-06 12:33:38  

Additional Information
 Earth MOID = 1.87241 au 
 Jupiter MOID = 1.91267 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  
rotation period rot_per 3.9775 h n/a LCDB (Rev. 2015-December); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]

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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