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 ]  
379767 (2011 HH20)
Classification: Main-belt Asteroid          SPK-ID: 2379767
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 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07460634731303438 5.7363e-08  
a 2.881598566318851 3.9943e-08 au
q 2.666613022863325 1.7131e-07 au
i 2.490729724343363 6.2193e-06 deg
node 51.96983078092962 0.00015045 deg
peri 257.8164261073686 0.0001566 deg
M 126.1916005033759 4.2735e-05 deg
tp 2457974.208389989829
(2017-Aug-08.70838999)
0.00021381 TDB
period 1786.687693192623
4.89
3.7149e-05
1.017e-07
d
yr
n .2014901660607052 4.1894e-09 deg/d
Q 3.096584109774377 4.2923e-08 au
  Orbit Determination Parameters
   # obs. used (total)      164  
   data-arc span      6465 days (17.70 yr)  
   first obs. used      2001-03-23  
   last obs. used      2018-12-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56485  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-14 13:38:57  

Additional Information
 Earth MOID = 1.65267 au 
 Jupiter MOID = 2.08421 au 
 T_jup = 3.289 
[ 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 16.4   n/a MPO418933  

379767 (2011 HH20)          Discovered 2001-Mar-23 by ADAS at Cima Ekar
Reference: Last Updated: 2013-11-20

Alternate Designations
 2011 HH20 = 2003 SX274 = 2012 ME8 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2019-Dec-14 10:52 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin