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JPL Small-Body Database Browser
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49599 (1999 FM18)
Classification: Main-belt Asteroid          SPK-ID: 2049599
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1596708339836703 4.8854e-08  
a 3.162644095139866 1.8885e-08 au
q 2.657662074875354 1.5519e-07 au
i 4.211527279562953 4.8495e-06 deg
node 240.567518167382 6.2486e-05 deg
peri 317.2322674158855 6.3468e-05 deg
M 197.6154046614435 1.1884e-05 deg
tp 2459527.151079853918
(2021-Nov-08.65107985)
7.1351e-05 TDB
period 2054.347507852564
5.62
1.8401e-05
5.038e-08
d
yr
n .1752381223838379 1.5696e-09 deg/d
Q 3.667626115404379 2.19e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1219  
   data-arc span      17736 days (48.56 yr)  
   first obs. used      1971-05-14  
   last obs. used      2019-12-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54455  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 04:21:59  

Additional Information
 Earth MOID = 1.65792 au 
 Jupiter MOID = 1.32474 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 13.8   n/a MPO333250  
diameter diameter 11.952 km 3.791 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2017AJ....154..168M)  
geometric albedo albedo 0.021   0.013 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2017AJ....154..168M)  

49599 (1999 FM18)          Discovered 1999-Mar-22 by LONEOS at Anderson Mesa
Reference: 20021120/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 1999 FM18 = 1993 BG14 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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