Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Center for Near-Earth Object Studies
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
IMPORTANT: The SSD Announcement email list is now available. Major changes are coming in the near future, including possible hostname and/or URL changes. To be notified of such changes, subscribe to this email list.

Please visit this page for more details.


JPL Small-Body Database Browser
Search: [ help ]  
66729 (1999 TH111)
Classification: Main-belt Asteroid          SPK-ID: 2066729
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0588721778434142 4.4987e-08  
a 2.625205045212623 1.9413e-08 au
q 2.470653506915437 1.1875e-07 au
i 13.59228634313013 6.1828e-06 deg
node 216.0832081370977 2.1634e-05 deg
peri 240.9247495472885 5.7843e-05 deg
M 226.3169780706014 5.3584e-05 deg
tp 2459577.421900830410
(2021-Dec-28.92190083)
0.00023154 TDB
period 1553.614522632761
4.25
1.7233e-05
4.718e-08
d
yr
n .2317177103815576 2.5703e-09 deg/d
Q 2.779756583509809 2.0556e-08 au
  Orbit Determination Parameters
   # obs. used (total)      576  
   data-arc span      9511 days (26.04 yr)  
   first obs. used      1993-04-18  
   last obs. used      2019-05-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .64632  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 05:28:47  

Additional Information
 Earth MOID = 1.51356 au 
 Jupiter MOID = 2.39018 au 
 T_jup = 3.360 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.1   n/a MPO493335  
diameter diameter 3.302 km 0.662 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.195   0.128 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

66729 (1999 TH111)          Discovered 1999-Oct-04 by LINEAR at Socorro
Reference: 20030910/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Feb-20 21:37 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin