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
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 ]  
39539 Emmadesmet (1991 GU4)
Classification: Main-belt Asteroid          SPK-ID: 2039539
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 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08337877867717793 3.8835e-08  
a 3.050840144335986 1.7827e-08 au
q 2.796464819161947 1.1922e-07 au
i 9.147377477727051 4.5165e-06 deg
node 15.82434110102623 2.6119e-05 deg
peri 130.4395058170346 3.6698e-05 deg
M 210.8231300730715 2.6447e-05 deg
tp 2459807.041270667794
(2022-Aug-15.54127067)
0.0001451 TDB
period 1946.379874994232
5.33
1.706e-05
4.671e-08
d
yr
n .1849587558035488 1.6212e-09 deg/d
Q 3.305215469510026 1.9314e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1615  
   data-arc span      10425 days (28.54 yr)  
   first obs. used      1991-04-08  
   last obs. used      2019-10-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50731  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 05:29:13  

Additional Information
 Earth MOID = 1.81739 au 
 Jupiter MOID = 1.70196 au 
 T_jup = 3.212 
[ 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 13.3   n/a MPO351108  

39539 Emmadesmet           Discovered 1991 Apr. 8 by E. W. Elst at the European Southern Observatory.
Emma de Smet (2005) is the second granddaughter of the discoverer, and daughter of Mayré and Robby.
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 2014-03-16Last Updated: 2014-03-21

[ show close-approach data ]
Alternate Designations
 1991 GU4 = 1996 DO2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
ABOUT SSD CREDITS/AWARDS PRIVACY/COPYRIGHT GLOSSARY LINKS
FirstGov 2020-Apr-07 02:11 UT
(server date/time)  
NASA Home Page
Site Manager:   Ryan S. Park
Webmaster  Alan B. Chamberlin