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18537 (1996 XH18)
Classification: Main-belt Asteroid          SPK-ID: 2018537
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 39 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1585632731344969 3.625e-08  
a 2.775467001617073 1.2864e-08 au
q 2.335379869363882 1.0095e-07 au
i 10.28592432266633 3.5285e-06 deg
node 122.7182290663266 2.2901e-05 deg
peri 300.4147319147156 2.5636e-05 deg
M 104.0503108390421 1.134e-05 deg
tp 2458712.361108693234
(2019-Aug-16.86110869)
5.2451e-05 TDB
period 1688.894530476479
4.62
1.1742e-05
3.215e-08
d
yr
n .2131571827036677 1.482e-09 deg/d
Q 3.215554133870263 1.4904e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1694  
   data-arc span      10227 days (28.00 yr)  
   first obs. used      1993-03-23  
   last obs. used      2021-03-23  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50109  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-May-04 02:44:42  

Additional Information
 Earth MOID = 1.36814 au 
 Jupiter MOID = 2.12316 au 
 T_jup = 3.294 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.71   n/a MPCxxxxx  

18537 (1996 XH18)          Discovered 1996-Dec-07 by Spacewatch at Kitt Peak
Reference: 20001111/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1996 XH18 = 1993 FM2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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