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 ]  
164202 (2004 EW)
Classification: Aten [NEO, PHA]          SPK-ID: 2164202
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | 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 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 73 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2791732823652013 3.277e-07  
a .9882239958261271 9.4692e-09 au
q .7123382591992922 3.3059e-07 au
i 4.669334572048936 8.0725e-06 deg
node 342.928999547531 2.0183e-05 deg
peri 56.15463316304941 2.8141e-05 deg
M 232.5531582315772 7.6675e-05 deg
tp 2458727.530526051084
(2019-Sep-01.03052605)		 7.8181e-05 TDB
period 358.8240300335227
0.98		 5.1574e-06
1.412e-08		 d
yr
n 1.003277288776806 1.442e-08 deg/d
Q 1.264109732452962 1.2113e-08 au
   Orbit Determination Parameters
   # obs. used (total)      426  
   data-arc span      4823 days (13.20 yr)  
   first obs. used      2004-03-13  
   last obs. used      2017-05-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52012  
   source      ORB  
   producer      Otto Matic  
   solution date      2017-May-28 06:20:23  

Additional Information
 Earth MOID = .0238648 au 
 Jupiter MOID = 4.12587 au 
 T_jup = 6.100 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 20.8   n/a MPO264343  
rotation period rot_per 11.1 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Hasegawa, S.; Kuroda, D.; Kitazato, K.; Kasuga, T.; et al. (2018) Pub. Astron. Soc. Japan 70, A114.]

164202 (2004 EW)          Discovered 2004-Mar-13 by CSS at Catalina
Reference: 20070926/Numbers.arcLast Updated: 2007-09-30

[ show close-approach data ]
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Jan-26 03:06 UT
(server date/time)   		NASA Home Page
Site Manager:   Ryan S. Park
Webmaster:   Alan B. Chamberlin