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JPL Small-Body Database Browser
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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 ]

[ 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

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
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
1902-Feb-18 05:29 00:03 Jupiter 1.95481635113054 1.9548149546901 1.95481774757098 2.69100403583849 2.52485685067046 2415798.728554757 3.29657213001531 74.1913400703076 41.5807625030408 -41.6811709540622 2595698.23163607 T 26 CATAB v2.0f-lin.ifort 2020-Feb-23 05:29:31 2020-Feb-23 05:29
1950-Oct-13 00:08 00:02 Jupiter 1.74323497381855 1.74323449238959 1.74323545524799 3.01969587936347 2.85425661493919 2433567.505513962 1.80204142843217 127.853261153983 23.1330522841346 -84.2173889879382 2601683.59762226 T 26 CATAB v2.0f-lin.ifort 2020-Feb-23 05:29:31 2020-Feb-23 05:29
1999-May-14 16:09 < 00:01 Jupiter 1.76864414369304 1.76864368849925 1.76864459888713 3.49985092368403 3.36022844294323 2451313.173257068 0.461937271942892 106.647526761486 16.4376554757715 -84.0330294404937 3046462.64194909 T 26 CATAB v2.0f-lin.ifort 2020-Feb-23 05:29:31 2020-Feb-23 05:29
2008-Nov-10 04:38 < 00:01 Jupiter 1.97492600976995 1.9749255647283 1.9749264548116 2.78413906578105 2.62557686662807 2454780.693184729 0.289148035751281 43.7687439447628 12.9913819132334 72.9215388148263 3515667.07842542 T 26 CATAB v2.0f-lin.ifort 2020-Feb-23 05:29:31 2020-Feb-23 05:29
2057-Jul-02 22:01 00:01 Jupiter 1.7517867627285 1.75178623838564 1.75178728707156 3.04470288078045 2.88152342574172 2472547.417637623 1.19327385397242 101.552852849064 25.1125041111064 -86.0760515656678 2850512.2399274 T 26 CATAB v2.0f-lin.ifort 2020-Feb-23 05:29:31 2020-Feb-23 05:29
2106-Feb-02 01:00 00:02 Jupiter 1.75773920952838 1.75773854025593 1.75773987880084 3.45198705978765 3.30944875800905 2490292.541444332 2.4757170677164 120.70127009389 29.5896783133925 88.8805601227938 2800963.69041404 T 26 CATAB v2.0f-lin.ifort 2020-Feb-23 05:29:31 2020-Feb-23 05:29
2115-Aug-02 17:31 00:03 Jupiter 1.99883793041789 1.99883654585987 1.99883931497568 2.8884770277581 2.73784305401248 2493761.230172011 2.88948209619102 62.694074414597 43.3876412866234 -18.1631403574767 2199820.77773424 T 26 CATAB v2.0f-lin.ifort 2020-Feb-23 05:29:31 2020-Feb-23 05:29
2164-Mar-22 19:29 00:04 Jupiter 1.75702576807158 1.75702456007815 1.7570269760699 3.06792009998576 2.90654069711991 2511526.311465870 4.13890924401769 190.395057050311 37.5984199053743 -72.4900830938493 2828643.33012483 T 26 CATAB v2.0f-lin.ifort 2020-Feb-23 05:29:31 2020-Feb-23 05:29

Alternate Designations
 1991 GU4 = 1996 DO2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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