Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Near-Earth Object (NEO) Program
Search JPL
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
JPL Small-Body Database Browser
Search: [ help ]  
(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 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 5 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .4675960050293705 1.4084e-05  
a 8.13244431263513 0.00024708 AU
q 4.329745840923117 4.0575e-05 AU
i 151.8067934166923 3.7164e-05 deg
node 291.9914704618874 0.00014887 deg
peri 32.15867948806238 0.001632 deg
M 248.9878576896888 0.011765 deg
tp 2459612.649667856383
(2022-Feb-02.14966786)
0.39585 JED
period 8470.910126206549
23.19
0.38605
0.001057
d
yr
n .04249838501842488 1.9368e-06 deg/d
Q 11.93514278434714 0.00036262 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.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      3  
   fit RMS      .64529  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-13 00:34:47  

Additional Information
 Earth MOID = 3.35152 AU 
 T_jup = -1.308 
[ 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 10:38 08:37 Jupiter 1.95352592395233 1.94897714803419 1.95807856605714 26.5137253209594 26.4973669889362 2433587.942791217 516.611106463482 96893.3061981181 2891.40628044725 -26.9972521739489 18696.9422817135 T 5 CATAB v2.0c-linF95 2014-Jun-13 00:34:48 2014-Jun-13 00:34
1974-Mar-27 04:31 04:44 Jupiter 1.45653078650253 1.45424967311004 1.45881314967079 27.1911821128456 27.1697868270095 2442133.688162285 283.887748940941 50649.0095504715 3221.65924050888 -27.5921188691122 13105.3030868831 T 5 CATAB v2.0c-linF95 2014-Jun-13 00:34:48 2014-Jun-13 00:34
1997-Aug-21 22:38 00:09 Jupiter 1.01098130211747 1.01093262632289 1.01103000693531 27.7843965982462 27.7542258053265 2450682.442980975 9.191183998001 5235.28346863152 813.652488224498 79.0082474742933 77217.2398426886 T 5 CATAB v2.0c-linF95 2014-Jun-13 00:34:48 2014-Jun-13 00:34
2005-Mar-24 10:20 00:20 Saturn 1.07805153255279 1.07742946942547 1.07867361451887 17.4600458019691 17.44656668684 2453453.930507414 20.1353300506216 13539.0397502097 1840.71424777132 6.88042481072247 6970.98904635742 T 5 CATAB v2.0c-linF95 2014-Jun-13 00:34:48 2014-Jun-13 00:34
2021-Jan-10 12:00 05:11 Jupiter 0.643243604204107 0.641818693220047 0.644677238379605 28.3199337951054 28.2733983139296 2459225.000100989 310.788483070739 58273.1443632005 3321.03691570198 -59.8228962840961 10759.7081223935 T 5 CATAB v2.0c-linF95 2014-Jun-13 00:34:48 2014-Jun-13 00:34
2044-Jun-13 19:03 11:19 Jupiter 0.517963486462663 0.517472481710685 0.518507032238799 28.7163683818467 28.6593654028851 2467780.293723903 678.742120524079 118643.608191078 3287.27712494774 83.9508775646264 10177.1620601525 T 5 CATAB v2.0c-linF95 2014-Jun-13 00:34:48 2014-Jun-13 00:34
2067-Nov-01 15:59 21:54 Jupiter 0.696241359552982 0.689985689137115 0.702571487786172 29.0665957531121 29.0247111904852 2476321.166135757 1313.81664460005 213734.957424656 3193.29166666289 48.6993908208023 10744.1969503626 T 5 CATAB v2.0c-linF95 2014-Jun-13 00:34:48 2014-Jun-13 00:34
2091-Feb-15 21:15 1_08:00 Jupiter 1.09375527565382 1.08335192733213 1.10420001907647 29.3232711908193 29.2968496536624 2484828.385760867 1919.93755751617 280715.503989267 2968.87713514248 33.486705287792 13430.9295078302 T 5 CATAB v2.0c-linF95 2014-Jun-13 00:34:48 2014-Jun-13 00:34
2114-May-14 02:12 1_15:15 Jupiter 1.54358246256122 1.53218119657329 1.55501494671987 29.3735609494645 29.3548736437648 2493315.591772998 2354.58995585904 294611.86066273 2554.81778215489 31.2691143785811 20757.9900054899 T 5 CATAB v2.0c-linF95 2014-Jun-13 00:34:48 2014-Jun-13 00:34
2122-Apr-23 17:28 1_01:03 Saturn 1.99062935089071 1.9830187585174 1.9982739276916 16.7112531482924 16.7036274732989 2496217.228098104 1503.36771147344 229643.367014514 4453.59134860499 47.296798749991 20960.9681525329 T 5 CATAB v2.0c-linF95 2014-Jun-13 00:34:48 2014-Jun-13 00:34
2137-Jul-20 09:25 1_19:20 Jupiter 1.95208378354443 1.94215143185904 1.9620494123635 29.1643044361545 29.1494226281514 2501783.892404018 2599.68343934075 259404.893154162 1908.18852008403 37.7257736162384 41209.79400993 T 5 CATAB v2.0c-linF95 2014-Jun-13 00:34:48 2014-Jun-13 00:34
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2014-Oct-31 19:12 UT
(server date/time)  
NASA Home Page
Site Manager:   Donald K. Yeomans
Webmaster  Alan B. Chamberlin