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

[ show orbit diagram ]
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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