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JPL Small-Body Database Browser
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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1177125454282189 3.5752e-08  
a 2.41282941681679 9.9649e-09 au
q 2.128809124479201 8.6673e-08 au
i .8651755038886282 4.0219e-06 deg
node 244.4151287392535 0.00026525 deg
peri 276.7230503373929 0.00026584 deg
M 242.0061493805608 1.9019e-05 deg
tp 2459049.188799884253
(2020-Jul-18.68879988)
7.3382e-05 TDB
period 1368.952425150533
3.75
8.4806e-06
2.322e-08
d
yr
n .2629748071489143 1.6291e-09 deg/d
Q 2.696849709154379 1.1138e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1266  
   data-arc span      7954 days (21.78 yr)  
   first obs. used      1998-02-26  
   last obs. used      2019-12-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56982  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 03:11:46  

Additional Information
 Earth MOID = 1.1378 au 
 Jupiter MOID = 2.28398 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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