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(1999 LE31)
Classification: Centaur          SPK-ID: 3021708
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Close-Approach Data ]

[ hide orbit diagram ]
Orbit Diagram
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 2-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 has stopped working because of a recent Java upgrade, here is a possible workaround.
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 2456800.5 (2014-May-23.0) TDB
Reference: JPL 4 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4678893869123307 1.7894e-05  
a 8.128841000134518 0.00030822 AU
q 4.325442568273761 4.5936e-05 AU
i 151.8054242637515 4.4009e-05 deg
node 291.9862237941923 0.00017279 deg
peri 32.20604744277503 0.0018728 deg
M 240.4182384907563 0.014168 deg
tp 2459612.425537223990
(2022-Feb-01.92553722)
0.49306 JED
period 8465.280830658996
23.18
0.48147
0.001318
d
yr
n .04252664586107714 2.4187e-06 deg/d
Q 11.93223943199527 0.00045244 AU
  Orbit Determination Parameters
   # obs. used (total)      127  
   data-arc span      409 days (1.12 yr)  
   first obs. used      1999-05-17  
   last obs. used      2000-06-29  
   planetary ephem.      DE405  
   SB-pert. ephem.      SB405-CPV-2  
   condition code      3  
   fit RMS      .50742  
   data source      ORB  
   producer      Otto Matic  
   solution date      2011-Sep-14 19:35:47  

Additional Information
 Earth MOID = 3.34559 AU 
 T_jup = -1.307 
[ 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 12.4 mag n/a MPO02649  
diameter diameter 16.8 km 4.2 Fernandez et al. (2005) Astron.J. 130:308-318  
geometric albedo albedo 0.056   0.026 Fernandez et al. (2005) Astron.J. 130:308-318  

[ hide close-approach data ]
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
1950-Nov-02 13:44 10:43 Jupiter 1.9540678043792 1.94838970501271 1.9597519743041 26.5129804802463 26.4966262258207 2433588.072440960 643.63109771594 121039.814267076 3339.21765142941 -27.109813552286 16251.890263001 T 4 CATAB v2.0c-linF95 2011-Sep-15 08:40:14 2011-Sep-15 12:53
1974-Mar-27 06:12 05:53 Jupiter 1.45680267237312 1.45395680790937 1.45965051674137 27.1908222756163 27.169430700567 2442133.758944975 353.304141288361 63300.7255938561 3718.65060326287 -27.833390150282 11433.5715328632 T 4 CATAB v2.0c-linF95 2011-Sep-15 08:40:14 2011-Sep-15 12:53
1997-Aug-21 22:38 00:10 Jupiter 1.01098233837312 1.01092628006965 1.01103843152207 27.7844130887692 27.7542423439874 2450682.443483891 10.4430057835205 6092.74887423893 994.928280667364 79.6713893905616 63285.4383210236 T 4 CATAB v2.0c-linF95 2011-Sep-15 08:40:14 2011-Sep-15 12:53
2005-Mar-24 10:16 00:24 Saturn 1.07797958607592 1.07719265697943 1.07876654562686 17.4600683876383 17.4465883754657 2453453.928000248 24.7477815021041 17125.1773256391 2117.32842298328 6.88129395760457 5757.68855873912 T 4 CATAB v2.0c-linF95 2011-Sep-15 08:40:14 2011-Sep-15 12:53
2021-Jan-10 10:08 06:28 Jupiter 0.64307321129661 0.641289789270814 0.644870136503766 28.3202680636825 28.2737207911982 2459224.922522261 388.326173559546 72586.0525060279 3844.91403246728 -59.5977325835217 9269.33932906689 T 4 CATAB v2.0c-linF95 2011-Sep-15 08:40:14 2011-Sep-15 12:53
2044-Jun-13 15:01 14:06 Jupiter 0.518019280567435 0.517425450138383 0.518695444788303 28.7169164966204 28.6599207520338 2467780.126222693 846.767809426446 147834.170353347 3804.6365851991 84.0086760404515 8795.27519885404 T 4 CATAB v2.0c-linF95 2011-Sep-15 08:40:14 2011-Sep-15 12:53
2067-Nov-01 08:15 1_03:17 Jupiter 0.696982957011395 0.689201913911114 0.704879514170167 29.0673120112918 29.0254730778841 2476320.844105816 1637.90584960003 266292.366512719 3694.93228729528 48.708927450296 9296.86091493498 T 4 CATAB v2.0c-linF95 2011-Sep-15 08:40:14 2011-Sep-15 12:53
2091-Feb-15 09:58 1_15:52 Jupiter 1.09498611861179 1.08203839759305 1.10799811810339 29.3238406687565 29.2974493570406 2484827.915412681 2392.5399094058 349633.988543797 3433.72603010424 33.5142714871899 11634.2172118727 T 4 CATAB v2.0c-linF95 2011-Sep-15 08:40:14 2011-Sep-15 12:53
2114-May-13 12:15 2_00:53 Jupiter 1.54493149307918 1.5307434399223 1.55916809500779 29.3735466766393 29.3548756843101 2493315.010833354 2933.70305416383 366865.429224737 2953.35805485401 31.3164149921341 17996.7124184654 T 4 CATAB v2.0c-linF95 2011-Sep-15 08:40:14 2011-Sep-15 12:53
2122-Apr-23 08:47 1_07:14 Saturn 1.99152800201025 1.98206478600654 2.00104401665029 16.7107562270224 16.7031337588264 2496216.866381895 1874.19707877907 286071.203599925 5149.77853645664 47.357236915135 18152.2821818135 T 4 CATAB v2.0c-linF95 2011-Sep-15 08:40:14 2011-Sep-15 12:53
2137-Jul-19 17:47 2_05:58 Jupiter 1.95325998937279 1.94090484799079 1.96566689728676 29.1633498139393 29.148476482236 2501783.241529493 3238.93357275584 323005.334275444 2204.11117703248 37.8015650738804 35758.3938503276 T 4 CATAB v2.0c-linF95 2011-Sep-15 08:40:14 2011-Sep-15 12:53
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Close-Approach Data ]
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