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 ]  
(2017 HG4)
Classification: Aten [NEO]          SPK-ID: 3774114
[ 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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1841624938403824 7.7927e-08  
a .8653813214154616 1.5121e-08 au
q .7060105391407047 7.9259e-08 au
i 2.996613999363617 5.2059e-06 deg
node 210.5162672995372 6.8422e-05 deg
peri 205.7386168772324 5.9583e-05 deg
M 229.2357970804139 2.9321e-05 deg
tp 2459503.306103780737
(2021-Oct-15.80610378)		 2.2601e-05 TDB
period 294.042226408939
0.81		 7.7067e-06
2.11e-08		 d
yr
n 1.224313951083102 3.2089e-08 deg/d
Q 1.024752103690219 1.7906e-08 au
   Orbit Determination Parameters
   # obs. used (total)      38  
   data-arc span      1480 days (4.05 yr)  
   first obs. used      2017-04-26  
   last obs. used      2021-05-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .5644  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-16 11:42:04  

Additional Information
 Earth MOID = .0010928 au 
 Jupiter MOID = 4.18008 au 
 T_jup = 6.813 
[ 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 27.7   n/a MPO411588  

[ 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-Jul-24 03:03 UT
(server date/time)   		NASA Home Page
Site Manager:   Ryan S. Park
Webmaster:   Alan B. Chamberlin