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JPL Small-Body Database Browser
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39729 (1996 XD)
Classification: Main-belt Asteroid          SPK-ID: 2039729
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 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1965116756460247 4.0057e-08  
a 2.413948733918804 1.0868e-08 au
q 1.93957962329282 9.5012e-08 au
i 3.423670945195386 5.1268e-06 deg
node 87.42478181796737 7.3896e-05 deg
peri 296.2271979179447 7.5127e-05 deg
M 112.2866616282983 1.5033e-05 deg
tp 2458573.216462966597
(2019-Mar-30.71646297)
5.587e-05 TDB
period 1369.905125875245
3.75
9.251e-06
2.533e-08
d
yr
n .2627919212799446 1.7746e-09 deg/d
Q 2.888317844544788 1.3003e-08 au
  Orbit Determination Parameters
   # obs. used (total)      966  
   data-arc span      13981 days (38.28 yr)  
   first obs. used      1981-10-25  
   last obs. used      2020-02-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49023  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 05:34:17  

Additional Information
 Earth MOID = .946177 au 
 Jupiter MOID = 2.56828 au 
 T_jup = 3.489 
[ 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 15.3   n/a MPO302293  

39729 (1996 XD)          Discovered 1996-Dec-01 by Urata, T. at Oohira
Reference: 20020526/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1996 XD = 1981 UW25 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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