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39958 (1998 FB122)
Classification: Main-belt Asteroid          SPK-ID: 2039958
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1899983189782922 3.5362e-08  
a 2.397674837251667 1.0325e-08 au
q 1.9421206487173 8.7761e-08 au
i 3.290277643122169 3.6362e-06 deg
node 79.20387751330168 6.4502e-05 deg
peri 191.6682087710365 6.5764e-05 deg
M 288.6532668091965 1.7177e-05 deg
tp 2459269.254315684611
(2021-Feb-23.75431568)
6.5953e-05 TDB
period 1356.075454607237
3.71
8.7596e-06
2.398e-08
d
yr
n .2654719534793641 1.7148e-09 deg/d
Q 2.853229025786034 1.2287e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1152  
   data-arc span      8069 days (22.09 yr)  
   first obs. used      1998-03-20  
   last obs. used      2020-04-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53518  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 08:47:47  

Additional Information
 Earth MOID = .926081 au 
 Jupiter MOID = 2.24884 au 
 T_jup = 3.501 
[ 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 15.2   n/a MPO319567  
diameter diameter 2.142 km 0.417 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.351   0.169 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

39958 (1998 FB122)          Discovered 1998-Mar-20 by LINEAR at Socorro
Reference: 20020526/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1998 FB122 = 1999 TN123 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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