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20100 (1994 XM)
Classification: Main-belt Asteroid          SPK-ID: 2020100
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 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1663639025114902 3.3193e-08  
a 3.147168654302118 1.7785e-08 au
q 2.623593395110582 1.0423e-07 au
i 1.225809474730766 3.8849e-06 deg
node 41.42467920791835 0.000179 deg
peri 20.62506884240385 0.00017941 deg
M 258.1788781555609 1.4162e-05 deg
tp 2459777.284829813534
(2022-Jul-16.78482981)
8.3195e-05 TDB
period 2039.28747760318
5.58
1.7286e-05
4.733e-08
d
yr
n .1765322466566195 1.4964e-09 deg/d
Q 3.670743913493653 2.0743e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1336  
   data-arc span      8958 days (24.53 yr)  
   first obs. used      1994-11-25  
   last obs. used      2019-06-05  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50874  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 03:13:07  

Additional Information
 Earth MOID = 1.636 au 
 Jupiter MOID = 1.66129 au 
 T_jup = 3.187 
[ 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 14.1   n/a MPO263527  
rotation period rot_per 188.389 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]

20100 (1994 XM)          Discovered 1994-Dec-04 by Kobayashi, T. at Oizumi
Reference: 20010109/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1994 XM = 1996 EQ3 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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