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 ]  
(2003 HT42)
Classification: Aten [NEO]          SPK-ID: 3153530
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

[ hide orbit diagram ]

For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


[ revert to old Java-based viewer ]

Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2617591147230747 7.0231e-05  
a .8145669110673991 1.6444e-05 au
q .6013465975436872 4.5068e-05 au
i 4.880981133569599 0.0033402 deg
node 38.77116565827801 0.026509 deg
peri 352.3761460873672 0.027348 deg
M 277.1944886481504 0.51303 deg
tp 2459062.265408226540
(2020-Jul-31.76540823)
0.3808 TDB
period 268.5273793802574
0.74
0.0081314
2.226e-05
d
yr
n 1.340645415118768 4.0597e-05 deg/d
Q 1.027787224591111 2.0749e-05 au
  Orbit Determination Parameters
   # obs. used (total)      110  
   data-arc span      12 days  
   first obs. used      2003-04-29  
   last obs. used      2003-05-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      6  
   norm. resid. RMS      .42637  
   source      ORB  
   producer      Otto Matic  
   solution date      2017-Apr-06 09:14:07  

Additional Information
 Earth MOID = .0126474 au 
 Jupiter MOID = 4.33086 au 
 T_jup = 7.149 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 24.8   n/a MPO48377  

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Apr-01 21:55 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin