Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Near-Earth Object (NEO) Program
Search JPL
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
JPL Small-Body Database Browser
Search: [ help ]  
23708 (1997 TR18)
Classification: Main-belt Asteroid          SPK-ID: 2023708
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04828609144600287 5.5446e-08  
a 2.985226348488032 2.6679e-08 au
q 2.841081436037922 1.6556e-07 au
i 9.47371573531807 5.707e-06 deg
node 200.0997085372431 3.5822e-05 deg
peri 289.3573163984847 7.1426e-05 deg
M 106.8374556301834 6.0497e-05 deg
tp 2457041.405317205020
(2015-Jan-18.90531721)
0.00031721 JED
period 1883.928109472212
5.16
2.5255e-05
6.914e-08
d
yr
n .1910900942503878 2.5617e-09 deg/d
Q 3.129371260938143 2.7967e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1240  
   data-arc span      12687 days (34.74 yr)  
   first obs. used      1981-07-26  
   last obs. used      2016-04-20  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .4562  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Apr-25 13:41:43  

Additional Information
 Earth MOID = 1.87067 au 
 Jupiter MOID = 1.91467 au 
 T_jup = 3.236 
[ 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 13.1 mag n/a MPO365533  
rotation period rot_per 3.9775 h n/a LCDB (Rev. 2016-February); 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. (2016) 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 ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2016-Apr-29 13:59 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin