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 ]  
6639 Marchis (1989 SO8)
Classification: Main-belt Asteroid          SPK-ID: 2006639
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1298135836251921 4.4267e-08  
a 3.176073571984654 3.2627e-08 AU
q 2.763776079748061 1.4024e-07 AU
i 2.520587587451646 5.4516e-06 deg
node 69.25882288313115 0.00013022 deg
peri 216.7878339012599 0.00013244 deg
M 223.3022681013658 2.6183e-05 deg
tp 2457785.542314000159
(2017-Feb-01.04231400)
0.00015271 JED
period 2067.446395157644
5.66
3.1858e-05
8.722e-08
d
yr
n .1741278520416245 2.6832e-09 deg/d
Q 3.588371064221247 3.6862e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1291  
   data-arc span      13741 days (37.62 yr)  
   first obs. used      1977-06-12  
   last obs. used      2015-01-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .50099  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Feb-04 13:17:34  

Additional Information
 Earth MOID = 1.74923 AU 
 T_jup = 3.186 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 12.7 mag n/a MPO324369  

6639 Marchis           Discovered 1989 Sept. 25 by H. Debehogne at La Silla.
Franck Marchis (b. 1973) exploited the high-resolution capabilities offered by adaptive optics from ground-based telescopes to survey hundreds of main-belt minor planets and Trojans. In 2004 he led the team that discovered (87) Sylvia II (Remus), the only case where a main-belt object is known to have a second satellite.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20070402/MPCPages.arcLast Updated: 2007-07-05

[ show close-approach data ]
Alternate Designations
 1989 SO8 = 1977 LZ 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2015-Mar-07 01:39 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin