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91554 (1999 RZ215)
Classification: TransNeptunian Object          SPK-ID: 2091554
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 6 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .7008112704224613 2.7736e-05  
a 103.3987182178287 0.01028 au
q 30.93573114353807 0.00022117 au
i 25.46396749682346 4.7087e-05 deg
node 341.5881873354847 3.6219e-05 deg
peri 335.6650386226616 0.00077549 deg
M 7.39668208427029 0.0011885 deg
tp 2451109.980245692807
0.099435 TDB
period 384035.3119395727
n .0009374137971370857 1.398e-07 deg/d
Q 175.8617052921193 0.017485 au
  Orbit Determination Parameters
   # obs. used (total)      117  
   data-arc span      7387 days (20.22 yr)  
   first obs. used      1999-09-08  
   last obs. used      2019-11-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      2  
   norm. resid. RMS      .74816  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 16:42:22  

Additional Information
 Earth MOID = 29.9392 au 
 Jupiter MOID = 25.9623 au 
 T_jup = 5.792 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 7.8   n/a MPO366278  

91554 (1999 RZ215)          Discovered 1999-Sep-08 by Luu, J. X., Trujillo, C. A., Jewitt, D. C. at Mauna Kea
Reference: 20041028/Numbers.arcLast Updated: 2004-10-29
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
FirstGov 2020-Oct-25 03:11 UT
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