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 ]  
469315 (1999 TD138)
Classification: Main-belt Asteroid          SPK-ID: 2469315
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 7 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2666152420710128 1.2294e-07  
a 2.606463811090281 2.1774e-08 au
q 1.911540831147111 3.0939e-07 au
i 14.18028041866119 1.0791e-05 deg
node 203.440457954517 4.5308e-05 deg
peri 180.4204677060313 6.1353e-05 deg
M 232.8992336589808 3.3861e-05 deg
tp 2459143.152295334063
(2020-Oct-20.65229533)
0.00014924 TDB
period 1537.007462221854
4.21
1.926e-05
5.273e-08
d
yr
n .2342213742278092 2.935e-09 deg/d
Q 3.301386791033451 2.758e-08 au
  Orbit Determination Parameters
   # obs. used (total)      69  
   data-arc span      6332 days (17.34 yr)  
   first obs. used      1999-10-01  
   last obs. used      2017-01-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .6841  
   source      ORB  
   producer      Otto Matic  
   solution date      2017-Apr-09 07:43:52  

Additional Information
 Earth MOID = .914544 au 
 Jupiter MOID = 2.15202 au 
 T_jup = 3.319 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 17.6   n/a MPO248754  

469315 (1999 TD138)          Discovered 1999-Oct-06 by LINEAR at Socorro
Reference: Last Updated: 2016-08-22
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin