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 ]  
74959 (1999 TD198)
Classification: Main-belt Asteroid          SPK-ID: 2074959
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1478313680777089 2.8315e-08  
a 2.277379450070137 8.591e-09 au
q 1.940711330334208 6.3099e-08 au
i 5.329954206986194 4.7282e-06 deg
node 351.1729916819218 3.3729e-05 deg
peri 272.9343034964813 3.8209e-05 deg
M 16.73209342160147 1.6482e-05 deg
tp 2458542.155583201401
(2019-Feb-27.65558320)
5.7523e-05 TDB
period 1255.311545199656
3.44
7.1032e-06
1.945e-08
d
yr
n .2867813981132009 1.6227e-09 deg/d
Q 2.614047569806066 9.861e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1214  
   data-arc span      7351 days (20.13 yr)  
   first obs. used      1999-10-12  
   last obs. used      2019-11-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51962  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 07:27:30  

Additional Information
 Earth MOID = .933715 au 
 Jupiter MOID = 2.4787 au 
 T_jup = 3.588 
[ 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 15.2   n/a MPO337823  

74959 (1999 TD198)          Discovered 1999-Oct-12 by LINEAR at Socorro
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 TD198 = 2001 BB70 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Jan-27 21:42 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin