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393927 (2005 UA99)
Classification: Main-belt Asteroid          SPK-ID: 2393927
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | 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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0698020102705235 5.6246e-08  
a 3.136222281861038 5.4941e-08 au
q 2.917307661931929 1.962e-07 au
i 10.42140895836175 6.7598e-06 deg
node 73.7916932627675 3.1927e-05 deg
peri 232.8466597627841 6.3672e-05 deg
M 319.2117366802968 6.0899e-05 deg
tp 2459230.348352128518
(2021-Jan-15.84835213)
0.00034585 TDB
period 2028.657266373373
5.55
5.3308e-05
1.459e-07
d
yr
n .1774572797324072 4.6631e-09 deg/d
Q 3.355136901790147 5.8776e-08 au
  Orbit Determination Parameters
   # obs. used (total)      201  
   data-arc span      4970 days (13.61 yr)  
   first obs. used      2005-10-22  
   last obs. used      2019-06-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .67127  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Sep-24 07:10:28  

Additional Information
 Earth MOID = 1.91607 au 
 Jupiter MOID = 1.81511 au 
 T_jup = 3.182 
[ 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 15.6   n/a MPO437613  

393927 (2005 UA99)          Discovered 2005-Oct-22 by Spacewatch at Kitt Peak
Reference: Last Updated: 2014-05-15

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Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
1906-Feb-16 20:32 00:09 Jupiter 1.83100701056982 1.83100631554395 1.83100770560058 3.787087117759 3.66289916422472 2417258.355666846 8.89964974015795 311.209505173009 25.1182547882846 -86.1473765943403 2199682.5880681 T 17 CATAB v2.0f-lin.ifort 2019-Sep-24 07:10:30 2019-Sep-24 07:10
1916-Jul-17 07:59 00:08 Jupiter 1.94429963262967 1.94429726170429 1.94430200362102 3.78023434335772 3.66317944451441 2421061.832606813 8.37156539371666 617.587260162678 33.3407840289849 -79.6858659766345 2309969.21264612 T 17 CATAB v2.0f-lin.ifort 2019-Sep-24 07:10:30 2019-Sep-24 07:10
1989-Nov-03 14:43 00:02 Jupiter 1.87577604987519 1.87577529262184 1.87577680713004 3.67356515693674 3.54851575630285 2447834.113251551 2.09906446410879 133.140866618609 21.7878385650496 -77.4039991872348 2217724.404419 T 17 CATAB v2.0f-lin.ifort 2019-Sep-24 07:10:30 2019-Sep-24 07:10
2000-Apr-12 10:37 00:01 Jupiter 1.85904834476192 1.85904768325908 1.85904900626497 3.83466718074397 3.71395062669799 2451646.942256960 1.21898995781025 132.205503269719 26.7358050488009 -85.1228542659315 2236216.71189305 T 17 CATAB v2.0f-lin.ifort 2019-Sep-24 07:10:30 2019-Sep-24 07:10
2073-Jul-25 16:09 00:05 Jupiter 1.98378314920867 1.98378140606128 1.98378489236722 3.47435426105548 3.349207496195 2478414.172759457 4.8483242371324 265.691540326121 20.5021639462742 -70.9986032411008 2400272.27372698 T 17 CATAB v2.0f-lin.ifort 2019-Sep-24 07:10:30 2019-Sep-24 07:10
2084-Jan-01 08:58 00:06 Jupiter 1.83644193864562 1.83644127227264 1.83644260502037 3.83224193198548 3.70993501144634 2482225.873560820 5.67227785957267 207.989967440628 24.8193446807186 -85.3157447134834 2238627.56401441 T 17 CATAB v2.0f-lin.ifort 2019-Sep-24 07:10:30 2019-Sep-24 07:10
2094-Jun-03 01:37 00:07 Jupiter 1.96379202861331 1.96378998889845 1.96379406837036 3.92492890572174 3.81345344560185 2486031.567578715 6.83260781465153 504.284642065785 33.0420080657136 -79.1971484518101 2492220.27685148 T 17 CATAB v2.0f-lin.ifort 2019-Sep-24 07:10:30 2019-Sep-24 07:10
2167-Sep-19 17:27 00:13 Jupiter 1.87748263657509 1.87747999584733 1.87748527738844 3.67523095780297 3.55035584347001 2512802.226770644 12.5371094321945 672.260934290748 22.2955121695943 -77.9021913897998 2216326.81296624 T 17 CATAB v2.0f-lin.ifort 2019-Sep-24 07:10:30 2019-Sep-24 07:10
2178-Feb-27 06:32 00:14 Jupiter 1.87633819907807 1.87633555378292 1.8763408444033 3.94521771500336 3.82908559609703 2516615.771975486 13.5954667679224 423.56948542145 38.4416821483159 -72.9699582815324 2068691.73637052 T 17 CATAB v2.0f-lin.ifort 2019-Sep-24 07:10:30 2019-Sep-24 07:10

Alternate Designations
 2005 UA99 = 2011 XZ3 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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