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
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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .261762003088263 7.0553e-05  
a .8145235522073968 1.8086e-05 au
q .6013122356190213 4.4115e-05 au
i 4.880923666062585 0.0033425 deg
node 38.76826596904845 0.026688 deg
peri 352.383982820581 0.027659 deg
M 185.3258331052887 0.50746 deg
tp 2459330.780697956665
(2021-Apr-26.28069796)
0.37415 TDB
period 268.5059393623438
0.74
0.0089431
2.448e-05
d
yr
n 1.340752464749715 4.4656e-05 deg/d
Q 1.027734868795772 2.2821e-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.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      6  
   norm. resid. RMS      .43109  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 21:44:22  

Additional Information
 Earth MOID = .0119038 au 
 Jupiter MOID = 4.33018 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 2021-May-18 10:04 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin