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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 | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1584806578227466 3.6617e-08  
a 2.775930655138843 1.3284e-08 au
q 2.335999338842111 1.0239e-07 au
i 10.28582899717572 3.6699e-06 deg
node 122.7181010006574 2.3157e-05 deg
peri 300.4797213814408 2.6095e-05 deg
M 61.36773899155038 1.1448e-05 deg
tp 2458712.528858392751
(2019-Aug-17.02885839)
5.3393e-05 TDB
period 1689.317753630839
4.63
1.2126e-05
3.32e-08
d
yr
n .2131037806394058 1.5297e-09 deg/d
Q 3.215861971435575 1.5389e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1586  
   data-arc span      9896 days (27.09 yr)  
   first obs. used      1993-03-23  
   last obs. used      2020-04-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50524  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 04:50:22  

Additional Information
 Earth MOID = 1.36929 au 
 Jupiter MOID = 2.12215 au 
 T_jup = 3.294 
[ 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 13.7   n/a MPO452433  

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

[ show close-approach data ]
Alternate Designations
 1996 XH18 = 1993 FM2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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