Skip Page Navigation
NASA JPL Caltech
NASA Logo - Jet Propulsion Laboratory + View the NASA Portal
+ Center for Near-Earth Object Studies
JPL Home Earth Solar System Stars & Galaxies Technology
JPL Solar System Dynamics
IMPORTANT: The SSD Announcement email list is now available. Major changes are coming in the near future, including possible hostname and/or URL changes. To be notified of such changes, subscribe to this email list.

Please visit this page for more details.

JPL Small-Body Database Browser
Search: [ help ]  
11351 Leucus (1997 TS25)
Classification: Jupiter Trojan          SPK-ID: 2011351
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ hide orbit diagram ]

For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer 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.

[ revert to old Java-based viewer ]

Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06432221514894793 1.4662e-08  
a 5.292253467160739 6.9226e-08 au
q 4.95184400102326 1.3609e-07 au
i 11.55508098227292 4.7477e-07 deg
node 251.0780623816626 8.5276e-07 deg
peri 160.2327345420703 8.2667e-06 deg
M 323.5894412750287 7.7267e-06 deg
tp 2459450.263516221732
9.1985e-05 TDB
period 4446.920660099022
n .08095489609926697 1.5884e-09 deg/d
Q 5.632662933298218 7.3679e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1509  
   data-arc span      8366 days (22.90 yr)  
   first obs. used      1996-11-09  
   last obs. used      2019-10-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50901  
   source      ORB  
   producer      Ryan S. Park  
   solution date      2019-Oct-15 09:34:29  

Additional Information
 Earth MOID = 3.96575 au 
 Jupiter MOID = .101335 au 
 T_jup = 2.955 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 10.9   n/a MPO502256  
diameter diameter 34.155 km 0.646 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (  
rotation period rot_per 445.732 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Buie, M.W.; Zangari, A.M.; Marchi, S.; Mottola, S.; Levinson, H.F. (2016) DPS #48, 208.06. (and private communications).]
[Buie, M.W.; Zangari, A.M.; Marchi, S.; Levinson, H.F.; Mottola, S. (2018) Astron. J. 155, A245.]
geometric albedo albedo 0.079   0.013 urn:nasa:pds:neowise_diameters_albedos::2.0[jupiter_trojans] (  

11351 Leucus           Discovered 1997 Oct. 12 by Beijing Schmidt CCD Asteroid Program at Xinglong.
Leucus, a character in Homer's Iliad, was an Achaean warrior and companion of Odysseus.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: MPC batch dated 2016-02-22Last Updated: 2016-02-25

Alternate Designations
 1997 TS25 = 1996 VP39 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
FirstGov 2020-Feb-19 07:56 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin