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 ]  
216947 (1999 TM258)
Classification: Mars-crossing Asteroid          SPK-ID: 2216947
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2665761770164379 4.4496e-08  
a 2.24745859797051 1.0009e-08 au
q 1.648339676920808 9.9483e-08 au
i 2.601888845008389 5.5441e-06 deg
node 259.3554587297273 0.00012041 deg
peri 70.96509636443862 0.00012087 deg
M 128.2007541352617 1.2454e-05 deg
tp 2458762.247849289683
(2019-Oct-05.74784929)
4.0956e-05 TDB
period 1230.654026334773
3.37
8.2212e-06
2.251e-08
d
yr
n .2925273816168946 1.9542e-09 deg/d
Q 2.846577519020212 1.2677e-08 au
  Orbit Determination Parameters
   # obs. used (total)      272  
   data-arc span      7827 days (21.43 yr)  
   first obs. used      1999-09-07  
   last obs. used      2021-02-10  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .59619  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 23:56:54  

Additional Information
 Earth MOID = .637896 au 
 Jupiter MOID = 2.52766 au 
 T_jup = 3.581 
[ 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 17.4   n/a MPO533493  

216947 (1999 TM258)          Discovered 1999-Oct-09 by LINEAR at Socorro
Reference: 20090806/Numbers.arcLast Updated: 2009-08-09
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Jun-16 21:36 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin