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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1592813851569091 4.6531e-08  
a 3.16352060348908 1.844e-08 au
q 2.659630659792918 1.4903e-07 au
i 4.210836325170323 4.6937e-06 deg
node 240.5675120821847 5.8455e-05 deg
peri 317.2018679960605 5.9491e-05 deg
M 267.699624259256 1.2017e-05 deg
tp 2459527.432997846383
(2021-Nov-08.93299785)
7.0674e-05 TDB
period 2055.201592651383
5.63
1.7969e-05
4.92e-08
d
yr
n .1751652982788758 1.5315e-09 deg/d
Q 3.667410547185241 2.1377e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1279  
   data-arc span      18084 days (49.51 yr)  
   first obs. used      1971-05-14  
   last obs. used      2020-11-16  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53697  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Dec-17 21:28:19  

Additional Information
 Earth MOID = 1.65958 au 
 Jupiter MOID = 1.32392 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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