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 ]  
442220 (2011 HT63)
Classification: Main-belt Asteroid          SPK-ID: 2442220
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1533644067472841 5.7602e-08  
a 2.305129891135022 2.5048e-08 au
q 1.951605012905668 1.2617e-07 au
i 6.286532046113636 6.3084e-06 deg
node 189.5412061731631 5.2265e-05 deg
peri 106.7627191117055 5.7871e-05 deg
M 140.6331169398694 2.4748e-05 deg
tp 2458501.125189278521
(2019-Jan-17.62518928)
8.4348e-05 TDB
period 1278.325729896172
3.50
2.0836e-05
5.705e-08
d
yr
n .2816183634426571 4.5902e-09 deg/d
Q 2.658654769364377 2.889e-08 au
  Orbit Determination Parameters
   # obs. used (total)      105  
   data-arc span      5137 days (14.06 yr)  
   first obs. used      2005-10-07  
   last obs. used      2019-10-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45099  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-08 15:59:48  

Additional Information
 Earth MOID = .947298 au 
 Jupiter MOID = 2.5492 au 
 T_jup = 3.565 
[ 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 17.6   n/a MPO342997  

442220 (2011 HT63)          Discovered 2011-Apr-24 by Spacewatch at Kitt Peak
Reference: Last Updated: 2015-09-02
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-May-30 08:24 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin