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 ]  
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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 74 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .278992315207128 3.4747e-07  
a .9879217743133085 7.7236e-09 au
q .7122991912541048 3.4875e-07 au
i 4.669002041173585 8.0994e-06 deg
node 342.9119482062643 2.1538e-05 deg
peri 56.19234202560317 2.9757e-05 deg
M 114.6014490123888 8.8843e-05 deg
tp 2459086.325302042753
(2020-Aug-24.82530204)
8.724e-05 TDB
period 358.6594377193752
0.98
4.206e-06
1.152e-08
d
yr
n 1.003737702510072 1.1771e-08 deg/d
Q 1.263544357372512 9.8785e-09 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.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50642  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 20:17:52  

Additional Information
 Earth MOID = .0235423 au 
 Jupiter MOID = 4.12684 au 
 T_jup = 6.101 
[ 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. 2020-October); 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 2021-Apr-14 12:28 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin