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

Significant website upgrade scheduled for September 27. More details available here.

JPL Small-Body Database Browser
Search: [ help ]  
91841 (1999 TA321)
Classification: Main-belt Asteroid          SPK-ID: 2091841
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1871409841455493 5.4658e-08  
a 3.119833628040298 2.1013e-08 au
q 2.535984892518457 1.7865e-07 au
i 8.764400673991565 4.6815e-06 deg
node 211.8396663227878 2.6829e-05 deg
peri 167.3955417953976 2.9231e-05 deg
M 2.976127701382941 1.2967e-05 deg
tp 2459379.860332617981
(2021-Jun-14.36033262)
7.2399e-05 TDB
period 2012.776620688478
5.51
2.0335e-05
5.567e-08
d
yr
n .1788574033997178 1.807e-09 deg/d
Q 3.70368236356214 2.4945e-08 au
  Orbit Determination Parameters
   # obs. used (total)      618  
   data-arc span      22176 days (60.71 yr)  
   first obs. used      1960-10-22  
   last obs. used      2021-07-10  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50638  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 18:17:55  

Additional Information
 Earth MOID = 1.53876 au 
 Jupiter MOID = 1.76716 au 
 T_jup = 3.171 
[ 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 15.06   n/a MPO637247  

91841 (1999 TA321)          Discovered 1999-Oct-10 by LINEAR at Socorro
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29

[ 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 2021-Sep-27 11:06 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin