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JPL Small-Body Database Browser
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117239 (2004 SM18)
Classification: Outer Main-belt Asteroid          SPK-ID: 2117239
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .104767789535467 5.2777e-08  
a 3.20701893883684 2.8952e-08 au
q 2.871026653616525 1.7084e-07 au
i 3.89317549180773 5.3492e-06 deg
node 236.386097670258 7.1873e-05 deg
peri 324.471784234054 7.5142e-05 deg
M 15.62722528319192 2.287e-05 deg
tp 2458509.439488374956
(2019-Jan-25.93948838)		 0.00013301 TDB
period 2097.7354322955
5.74		 2.8406e-05
7.777e-08		 d
yr
n .1716136336630692 2.3239e-09 deg/d
Q 3.543011224057155 3.1985e-08 au
   Orbit Determination Parameters
   # obs. used (total)      496  
   data-arc span      9276 days (25.40 yr)  
   first obs. used      1993-12-17  
   last obs. used      2019-05-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55509  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 06:54:34  

Additional Information
 Earth MOID = 1.86946 au 
 Jupiter MOID = 1.43839 au 
 T_jup = 3.180 
[ 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 14.8   n/a MPO436562  
diameter diameter 6.040 km 1.405 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
geometric albedo albedo 0.048   0.034 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

117239 (2004 SM18)          Discovered 2004-Sep-17 by Spacewatch at Kitt Peak
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
Alternate Designations
 2004 SM18 = 2002 JZ142 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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