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
JPL Small-Body Database Browser
Search: [ help ]  
74972 (1999 TT218)
Classification: Main-belt Asteroid          SPK-ID: 2074972
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 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07970310520168958 3.5431e-08  
a 2.444980438266852 1.1546e-08 au
q 2.250107905179596 8.974e-08 au
i 6.521572909180313 4.4277e-06 deg
node 19.53451204735098 3.2573e-05 deg
peri 223.5382922558504 4.2603e-05 deg
M 277.6187817423163 2.8155e-05 deg
tp 2459320.048820844061
(2021-Apr-15.54882084)
0.00010976 TDB
period 1396.405369292196
3.82
9.8912e-06
2.708e-08
d
yr
n .257804795023436 1.8261e-09 deg/d
Q 2.639852971354108 1.2466e-08 au
  Orbit Determination Parameters
   # obs. used (total)      864  
   data-arc span      12456 days (34.10 yr)  
   first obs. used      1986-03-12  
   last obs. used      2020-04-18  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54038  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 14:09:35  

Additional Information
 Earth MOID = 1.24298 au 
 Jupiter MOID = 2.36496 au 
 T_jup = 3.486 
[ 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 15.4   n/a MPO502609  

74972 (1999 TT218)          Discovered 1999-Oct-15 by LINEAR at Socorro
Reference: 20040415/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 TT218 = 1986 EC4 = 2001 DK48 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Aug-07 10:48 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin