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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 ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08337877826315489 3.8735e-08  
a 3.050840143780596 1.7772e-08 au
q 2.796464819915983 1.1898e-07 au
i 9.147377297149795 4.5146e-06 deg
node 15.82433951497125 2.5976e-05 deg
peri 130.4395077612847 3.6554e-05 deg
M 210.8231299043881 2.6421e-05 deg
tp 2459807.041271359560
(2022-Aug-15.54127136)
0.00014498 TDB
period 1946.379874462739
5.33
1.7008e-05
4.657e-08
d
yr
n .184958755854055 1.6162e-09 deg/d
Q 3.305215467645211 1.9254e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1679  
   data-arc span      10710 days (29.32 yr)  
   first obs. used      1991-04-08  
   last obs. used      2020-08-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50069  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 03:34:56  

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 ]
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