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JPL Small-Body Database Browser
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(2009 WY7)
Classification: Aten [NEO]          SPK-ID: 3477942
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]

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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 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .6088594506064376 7.3478e-07  
a .6496478559599211 8.8074e-09 au
q .2541036192925134 4.7436e-07 au
i 4.015037579818594 6.2033e-05 deg
node 64.07813033287269 5.6251e-05 deg
peri 172.3093124539883 0.00011502 deg
M 248.8996919346259 0.00036698 deg
tp 2459455.523940964512
(2021-Aug-29.02394096)
0.00019377 TDB
period 191.2561640668093
0.52
3.8893e-06
1.065e-08
d
yr
n 1.88229227411591 3.8278e-08 deg/d
Q 1.045192092627329 1.417e-08 au
  Orbit Determination Parameters
   # obs. used (total)      144  
   data-arc span      4024 days (11.02 yr)  
   first obs. used      2009-11-19  
   last obs. used      2020-11-25  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      1  
   norm. resid. RMS      .38756  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-15 03:12:24  

Additional Information
 Earth MOID = .00995269 au 
 Jupiter MOID = 3.95709 au 
 T_jup = 8.569 
[ 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 24.1   n/a MPO167786  
rotation period rot_per 0.21 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Incomplete or inconclusive result.
Published Reference List:
[Ryan, W. UNPUBLISHED]

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Close-Approach Data ]
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