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 ]  
186998 (2004 TW87)
Classification: Main-belt Asteroid          SPK-ID: 2186998
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ 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 .07299226306209276 4.2342e-08  
a 3.165818003808875 3.417e-08 au
q 2.934737783268149 1.4657e-07 au
i 1.926737045540986 5.8103e-06 deg
node 146.9906208670166 0.00018169 deg
peri 127.8931254900088 0.00018952 deg
M 47.37107942327189 5.1906e-05 deg
tp 2458929.768914940065
(2020-Mar-21.26891494)
0.00029756 TDB
period 2057.440780496467
5.63
3.331e-05
9.12e-08
d
yr
n .1749746594957308 2.8329e-09 deg/d
Q 3.396898224349602 3.6664e-08 au
  Orbit Determination Parameters
   # obs. used (total)      263  
   data-arc span      7539 days (20.64 yr)  
   first obs. used      1999-11-30  
   last obs. used      2020-07-21  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52295  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:53:35  

Additional Information
 Earth MOID = 1.91706 au 
 Jupiter MOID = 1.67848 au 
 T_jup = 3.199 
[ 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 15.85   n/a E2021B55  

186998 (2004 TW87)          Discovered 2004-Oct-05 by Spacewatch at Kitt Peak
Reference: 20080520/Numbers.arcLast Updated: 2008-05-22

[ 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-Jun-17 18:52 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin