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20178 (1996 XE31)
Classification: Main-belt Asteroid          SPK-ID: 2020178
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1296787817305531 3.6725e-08  
a 2.416853096300203 8.5694e-09 au
q 2.103438531150278 8.9874e-08 au
i 10.89874538891815 3.3814e-06 deg
node 271.7387998565385 2.1064e-05 deg
peri 304.9325998366526 2.6921e-05 deg
M 41.3224565003594 1.6129e-05 deg
tp 2459042.972116688912
(2020-Jul-12.47211669)		 6.1648e-05 TDB
period 1372.378188394931
3.76		 7.299e-06
1.998e-08		 d
yr
n .2623183631481634 1.3952e-09 deg/d
Q 2.730267661450128 9.6807e-09 au
   Orbit Determination Parameters
   # obs. used (total)      1819  
   data-arc span      10026 days (27.45 yr)  
   first obs. used      1993-01-29  
   last obs. used      2020-07-12  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50258  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:14:39  

Additional Information
 Earth MOID = 1.11379 au 
 Jupiter MOID = 2.33399 au 
 T_jup = 3.480 
[ 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 14.35   n/a E2021B10  

20178 (1996 XE31)          Discovered 1996-Dec-14 by Kobayashi, T. at Oizumi
Reference: 20010109/Numbers.arcLast Updated: 2004-04-19

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Alternate Designations
 1996 XE31 = 1998 MO25 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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