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 ]  
(2019 WH4)
Classification: Apollo [NEO]          SPK-ID: 3893640
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 2458815.5 (2019-Nov-28.0) TDB
Reference: JPL 3 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .6056302082440147 0.00098657  
a 2.516294026853719 0.0063262 au
q .9923503513671308 1.2375e-05 au
i 3.555003162105625 0.0042708 deg
node 243.5200308327798 0.001309 deg
peri 197.0367495780555 0.0015908 deg
M 356.8063273297021 0.012646 deg
tp 2458828.433867513381
(2019-Dec-10.93386751)
0.0024399 TDB
period 1457.942871892026
3.99
5.4981
0.01505
d
yr
n .2469232553212559 0.00093119 deg/d
Q 4.040237702340307 0.010158 au
  Orbit Determination Parameters
   # obs. used (total)      17  
   data-arc span      7 days  
   first obs. used      2019-11-25  
   last obs. used      2019-12-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      8  
   norm. resid. RMS      .36939  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-04 07:21:30  

Additional Information
 Earth MOID = .01417 au 
 Jupiter MOID = 1.24886 au 
 T_jup = 3.172 
[ 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 27.356   .56266 3 autocmod 2.8

[ 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 2019-Dec-08 21:26 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin