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'Oumuamua (A/2017 U1)
Classification: Hyperbolic Asteroid          SPK-ID: 3788040
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Close-Approach Data ]

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Orbit Diagram
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Note: This Java-based orbit viewer will eventually be retired.

Note: Make sure you have Java enabled on your browser to see the applet. This applet is provided as a 3D orbit visualization tool. The applet 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. For accurate long-term ephemerides, please instead use our Horizons system.

Note: If the applet is not working, here are some notes that might help.
Orbit Viewer

Additional Notes: the orbits shown in the applet are color coded. The planets are white lines, and the asteroid/comet is a blue line. The bright white line indicates the portion of the orbit that is above the ecliptic plane, and the darker portion is below the ecliptic plane. Likewise for the asteroid/comet orbit, the light blue indicates the portion above the ecliptic plane, and the dark blue the portion below the ecliptic plane.

Orbit Viewer applet originally written and kindly provided by Osamu Ajiki (AstroArts), and further modified by Ron Baalke (JPL).

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
0.00026424 TDB
period n/a
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  
   norm. resid. RMS      .43612  
   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 | Physical Parameters | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 22.08   .44525 2 autocmod 2.6k
rotation period rot_per 7.937 h n/a LCDB (Rev. 2019-August); 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:
[Bannister, M.T.; Schwamb, M.E.; Fraser, W.C.; Marsset, M.; et al. (2017) Astrophys. J. Letters, submitted. ArXiv1711.06214v1.]
[Bolin, B.T.; Weaver, H.A.; Fernandez, Y.R.; Lisse, C.M.; et al. (2017). ArXiv:1711.04927v1.]
[Drahus, M.; Guzik, P.; Waniak, W.; Handzlik, B.; et al. (2017) ArXiv:171200437]
[Fraser, W.C.; Pravec, P.; Fitzsimmons, A.; Lacerda, P.; et al. (2017) ArXiv:1711.11530]
[Jewitt, D.; Luu, J.; Rajagopal, J.; Kotulla, R.; et al. (2017) Astrophys. J. Letters, submitted. ArXiv:1711.05687v1.]

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