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39959 (1998 FH122)
Classification: Main-belt Asteroid          SPK-ID: 2039959
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04806863282162892 3.966e-08  
a 2.448568251816048 1.0762e-08 au
q 2.330868923580805 9.8157e-08 au
i 5.981627219969637 4.6375e-06 deg
node 209.0756490444311 3.8939e-05 deg
peri 18.6271239765981 6.0978e-05 deg
M 148.8372764501275 4.8644e-05 deg
tp 2458021.903287633452
(2017-Sep-25.40328763)
0.00018837 TDB
period 1399.480166662099
3.83
9.2261e-06
2.526e-08
d
yr
n .2572383722011839 1.6959e-09 deg/d
Q 2.566267580051292 1.1279e-08 au
  Orbit Determination Parameters
   # obs. used (total)      833  
   data-arc span      9878 days (27.04 yr)  
   first obs. used      1992-11-19  
   last obs. used      2019-12-06  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .58438  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 03:12:06  

Additional Information
 Earth MOID = 1.32215 au 
 Jupiter MOID = 2.40611 au 
 T_jup = 3.488 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.3   n/a MPO449243  
diameter diameter 4.025 km 0.148 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.048   0.011 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

39959 (1998 FH122)          Discovered 1998-Mar-20 by LINEAR at Socorro
Reference: 20020526/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1998 FH122 = 1999 RT58 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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