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39915 (1998 FY42)
Classification: Main-belt Asteroid          SPK-ID: 2039915
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 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1175058481715747 3.4818e-08  
a 2.412890027842499 9.6217e-09 au
q 2.129361338576131 8.4958e-08 au
i .8651482741843944 3.9615e-06 deg
node 244.4135609590788 0.00025859 deg
peri 276.666722098809 0.00025917 deg
M 347.2262161997816 1.8563e-05 deg
tp 2459049.076003396945
(2020-Jul-18.57600340)
7.0691e-05 TDB
period 1369.004008240785
3.75
8.1886e-06
2.242e-08
d
yr
n .2629648984465807 1.5729e-09 deg/d
Q 2.696418717108866 1.0752e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1339  
   data-arc span      8010 days (21.93 yr)  
   first obs. used      1998-02-26  
   last obs. used      2020-02-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55321  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-23 05:38:55  

Additional Information
 Earth MOID = 1.13789 au 
 Jupiter MOID = 2.28298 au 
 T_jup = 3.509 
[ 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 15.1   n/a MPO358992  
diameter diameter 2.477 km 0.426 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.316   0.101 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

39915 (1998 FY42)          Discovered 1998-Mar-20 by LINEAR at Socorro
Reference: 20020526/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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