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4859 Fraknoi (1986 TJ2)
Classification: Main-belt Asteroid          SPK-ID: 2004859
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 36 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1347332558800327 2.7559e-08  
a 2.27291294382524 6.5435e-09 au
q 1.966675982571795 6.4405e-08 au
i 6.416099808159558 3.1943e-06 deg
node 122.2103241074968 2.9592e-05 deg
peri 314.3575026589152 3.2516e-05 deg
M 251.4260617663778 1.3197e-05 deg
tp 2459377.981541529175
(2021-Jun-12.48154153)
4.6136e-05 TDB
period 1251.620390319606
3.43
5.405e-06
1.48e-08
d
yr
n .287627145406342 1.2421e-09 deg/d
Q 2.579149905078684 7.4252e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2407  
   data-arc span      15016 days (41.11 yr)  
   first obs. used      1979-09-21  
   last obs. used      2020-10-31  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .42651  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 03:48:06  

Additional Information
 Earth MOID = .98828 au 
 Jupiter MOID = 2.64307 au 
 T_jup = 3.591 
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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 13.6   n/a MPO337293  
diameter diameter 7.060 km 0.064 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 7.846 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Warner, B.D. (2008) Minor Planet Bull. 35, 95-98.]
geometric albedo albedo 0.204   0.067 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

4859 Fraknoi (1986 TJ2)          Discovered 1986-Oct-07 by Bowell, E. at Flagstaff
Reference: DISCOVERY.DBLast Updated: 2003-08-29

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Alternate Designations
 1986 TJ2 = 1979 SM1 = 1984 AP1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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