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120805 (1998 FF138)
Classification: Main-belt Asteroid          SPK-ID: 2120805
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1382596542505348 4.9003e-08  
a 2.612720606540307 1.2961e-08 au
q 2.251486758826796 1.241e-07 au
i 4.137056741349407 5.5592e-06 deg
node 8.191609462182399 5.4655e-05 deg
peri 213.8148913797226 5.9751e-05 deg
M 111.7729196198103 2.1244e-05 deg
tp 2458721.570071355807
(2019-Aug-26.07007136)
9.1049e-05 TDB
period 1542.545143299193
4.22
1.1478e-05
3.143e-08
d
yr
n .2333805279954612 1.7366e-09 deg/d
Q 2.973954454253817 1.4753e-08 au
  Orbit Determination Parameters
   # obs. used (total)      542  
   data-arc span      9163 days (25.09 yr)  
   first obs. used      1995-09-17  
   last obs. used      2020-10-18  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .56204  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 17:08:13  

Additional Information
 Earth MOID = 1.24355 au 
 Jupiter MOID = 2.00846 au 
 T_jup = 3.391 
[ 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 16.02   n/a E2021B55  
diameter diameter 3.463 km 0.159 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.077   0.010 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

120805 (1998 FF138)          Discovered 1998-Mar-28 by LINEAR at Socorro
Reference: 20060314/Numbers.arcLast Updated: 2006-03-23

[ show close-approach data ]
Alternate Designations
 1998 FF138 = 2002 CB109 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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