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
BODIES ORBITS EPHEMERIDES TOOLS PHYSICAL DATA DISCOVERY FAQ SITE MAP
JPL Small-Body Database Browser
Search: [ help ]  
382238 Euphemus (2012 SN9)
Classification: Jupiter Trojan          SPK-ID: 2382238
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07178682477088183 1.2497e-07  
a 5.12052205112098 3.7937e-07 au
q 4.752936031901721 9.1635e-07 au
i 12.44615130353368 8.0582e-06 deg
node 306.7723723867491 5.3343e-05 deg
peri 28.62149917687174 0.00011288 deg
M 287.5068106751058 0.00011375 deg
tp 2460248.745063031277
(2023-Oct-31.24506303)
0.0013917 TDB
period 4232.235131996074
11.59
0.00047034
1.288e-06
d
yr
n .08506143651574742 9.453e-09 deg/d
Q 5.488108070340237 4.066e-07 au
  Orbit Determination Parameters
   # obs. used (total)      135  
   data-arc span      6808 days (18.64 yr)  
   first obs. used      2001-09-29  
   last obs. used      2020-05-20  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .56542  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 10:53:23  

Additional Information
 Earth MOID = 3.74737 au 
 Jupiter MOID = .13677 au 
 T_jup = 2.949 
[ 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 13.41   n/a E2021B25  

382238 Euphemus           Discovered 2011 July 8 by L. Elenin at Mayhill-ISON.
Euphemus, son of Troezenus, was a leader of the Thracian Cicones, and an ally of the Trojans. He was killed either by Achilles or by one of the following four: Diomedes, Idomeneus and the two Ajaxes.
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 2014-01-16Last Updated: 2014-01-21
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2021-Jul-28 17:37 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin