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123981 (2001 FJ42)
Classification: Main-belt Asteroid          SPK-ID: 2123981
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04354083027562437 8.2136e-08  
a 3.072308485387955 2.7815e-08 au
q 2.938537623071317 2.4671e-07 au
i 7.893973675618099 9.8298e-06 deg
node 359.7444931797687 2.9277e-05 deg
peri 198.2155737507967 6.6755e-05 deg
M 190.712084250913 6.0672e-05 deg
tp 2459925.451827188740
(2022-Dec-11.95182719)
0.00033446 TDB
period 1966.960584956829
5.39
2.6712e-05
7.313e-08
d
yr
n .1830234946003767 2.4855e-09 deg/d
Q 3.206079347704592 2.9026e-08 au
  Orbit Determination Parameters
   # obs. used (total)      430  
   data-arc span      21558 days (59.02 yr)  
   first obs. used      1960-09-24  
   last obs. used      2019-10-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .51451  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 14:35:21  

Additional Information
 Earth MOID = 1.93827 au 
 Jupiter MOID = 1.75973 au 
 T_jup = 3.214 
[ 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 15.0   n/a MPO453713  
diameter diameter 4.293 km 0.740 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.096   0.027 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

123981 (2001 FJ42)          Discovered 2001-Mar-18 by LINEAR at Socorro
Reference: 20060314/Numbers.arcLast Updated: 2006-03-23

[ show close-approach data ]
Alternate Designations
 2001 FJ42 = 1998 UZ1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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