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 ]  
12373 Lancearmstrong (1994 JE9)
Classification: Main-belt Asteroid          SPK-ID: 2012373
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1144564617410173 3.2446e-08  
a 2.450629424425748 9.6908e-09 au
q 2.170139051467551 8.1021e-08 au
i 6.752212204747364 3.6772e-06 deg
node 118.4936028435788 3.4368e-05 deg
peri 149.9597382399975 3.8996e-05 deg
M 250.9304490646833 2.0374e-05 deg
tp 2459425.037361800498
8.0277e-05 TDB
period 1401.247634537494
n .2569139038145989 1.5239e-09 deg/d
Q 2.731119797383946 1.08e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1736  
   data-arc span      9395 days (25.72 yr)  
   first obs. used      1994-05-15  
   last obs. used      2020-02-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4608  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 20:19:25  

Additional Information
 Earth MOID = 1.15694 au 
 Jupiter MOID = 2.35919 au 
 T_jup = 3.477 
[ 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 14.2   n/a MPO458945  
diameter diameter 3.291 km 0.264 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (  
geometric albedo albedo 0.449   0.089 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (  

12373 Lancearmstrong           Discovered 1994 May 15 by C. P. de Saint-Aignan at Palomar.
Lance Armstrong (b. 1971) is an American cyclist and cancer survivor. After being diagnosed with advanced testicular cancer in 1996, he was able to return to cycling and is currently the three-time defending champion of the Tour de France. He serves as an inspiration to cancer survivors and athletes around the world.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20011101/MPCPages.arcLast Updated: 2009-05-11

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
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
2081-Jan-18 18:44 00:03 Psych 0.0346572387190652 0.0346549168051179 0.0346595624167308 3.0312720875295 3.03127197236084 2481148.280830421 3.18793315685681 438.976060490624 44.084275674965 75.8172030476505 113879.661435603 T 31 CATAB v2.0f-lin.ifort 2020-Feb-22 20:19:39 2020-Feb-22 20:19

Alternate Designations
 1994 JE9 = 1997 AP22 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
FirstGov 2020-Feb-24 20:50 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin