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 ]  
392137 (2009 HW)
Classification: Main-belt Asteroid          SPK-ID: 2392137
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 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1980494357792894 6.513e-08  
a 3.027576417023485 4.3442e-08 au
q 2.427966615853301 2.0966e-07 au
i 20.33370649596363 6.9583e-06 deg
node 206.317240893917 1.9569e-05 deg
peri 281.5021651968627 2.7999e-05 deg
M 22.89787910309916 1.6475e-05 deg
tp 2458478.113404289196
(2018-Dec-25.61340429)
8.8618e-05 TDB
period 1924.159624457365
5.27
4.1414e-05
1.134e-07
d
yr
n .187094664821025 4.0269e-09 deg/d
Q 3.627186218193669 5.2045e-08 au
  Orbit Determination Parameters
   # obs. used (total)      142  
   data-arc span      4177 days (11.44 yr)  
   first obs. used      2007-11-15  
   last obs. used      2019-04-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .62719  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-14 12:09:21  

Additional Information
 Earth MOID = 1.53427 au 
 Jupiter MOID = 1.79845 au 
 T_jup = 3.121 
[ 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 15.9   n/a MPO427953  

392137 (2009 HW)          Discovered 2009-Apr-16 by CSS at Catalina
Reference: Last Updated: 2014-04-17

[ 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
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin