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 ]  
442645 (2012 TW109)
Classification: Main-belt Asteroid          SPK-ID: 2442645
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05228641533832763 6.4698e-08  
a 2.247203325297 3.448e-08 au
q 2.12970511888085 1.4805e-07 au
i 7.218124704491222 9.9248e-06 deg
node 323.6130034286944 4.4308e-05 deg
peri 249.8679271255609 0.0001117 deg
M 146.0196370508534 0.00010617 deg
tp 2458101.419336274559
(2017-Dec-13.91933627)
0.00036154 TDB
period 1230.444360566287
3.37
2.8319e-05
7.753e-08
d
yr
n .2925772278189949 6.7337e-09 deg/d
Q 2.36470153171315 3.6282e-08 au
  Orbit Determination Parameters
   # obs. used (total)      73  
   data-arc span      3671 days (10.05 yr)  
   first obs. used      2007-01-10  
   last obs. used      2017-01-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .64777  
   source      ORB  
   producer      Otto Matic  
   solution date      2017-Apr-09 12:26:40  

Additional Information
 Earth MOID = 1.13711 au 
 Jupiter MOID = 2.63063 au 
 T_jup = 3.618 
[ 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 18.1   n/a MPO397583  

442645 (2012 TW109)          Discovered 2007-Jan-10 by Spacewatch at Kitt Peak
Reference: Last Updated: 2015-09-02

Alternate Designations
 2012 TW109 = 2014 BH39 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin