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'Oumuamua (A/2017 U1)
Classification: Hyperbolic Asteroid          SPK-ID: 3788040
[ 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.


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Orbital Elements at Epoch 2458080.5 (2017-Nov-23.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e 1.201133796102373 2.1064e-05  
a -1.27234500742808 0.00010015 au
q .2559115812959116 6.6635e-06 au
i 122.7417062847286 0.00028826 deg
node 24.59690955523242 0.00025422 deg
peri 241.8105360304898 0.0012495 deg
M 51.1576197938249 0.0061155 deg
tp 2458006.007321375231
(2017-Sep-09.50732138)		 0.00026424 JED
period n/a
n/a		 n/a
n/a		 d
yr
n .6867469493413392 8.1084e-05 deg/d
Q n/a n/a au

Additional Model Parameters
 Parameter Value Uncertainty (1-sigma) 
A1 [EST] 2.790193364334668E-7 3.574E-8
A2 [EST] 1.441264159911234E-8 2.445E-8
A3 [EST] 1.57392261588653E-8 2.249E-8
ALN [SET] .0408373333128795 n/a
NK [SET] 2.6 n/a
NM [SET] 2. n/a
NN [SET] 3. n/a
R0 [SET] 5. n/a
   Orbit Determination Parameters
   # obs. used (total)      207  
   data-arc span      80 days  
   first obs. used      2017-10-14  
   last obs. used      2018-01-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   fit RMS      .43612  
   data source      ORB  
   producer      Davide Farnocchia  
   solution date      2018-Jun-26 12:17:57  

Additional Information
 Earth MOID = .0958212 au 
 Jupiter MOID = 1.45424 au 
 Sol. 7c, Micheli et al. 2018 
[ 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 22.08 mag .44525 2 autocmod 2.6k

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