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6666 Fro (1993 FG20)
Classification: Main-belt Asteroid          SPK-ID: 2006666
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2355947553796175 4.3767e-08  
a 2.577962341079039 7.3596e-09 au
q 1.970607933954657 1.099e-07 au
i 2.983320794748515 4.4027e-06 deg
node 230.9769879990145 7.8081e-05 deg
peri 161.7617806382088 7.8638e-05 deg
M 29.95141414199943 9.1975e-06 deg
tp 2459074.715215037635
(2020-Aug-13.21521504)
3.8513e-05 TDB
period 1511.865929660866
4.14
6.4742e-06
1.773e-08
d
yr
n .2381163520767701 1.0197e-09 deg/d
Q 3.185316748203421 9.0935e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1402  
   data-arc span      21282 days (58.27 yr)  
   first obs. used      1962-11-30  
   last obs. used      2021-03-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52106  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 18:58:19  

Additional Information
 Earth MOID = .975945 au 
 Jupiter MOID = 2.25781 au 
 T_jup = 3.385 
[ 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 14.42   n/a E2021B10  
diameter diameter 4.083 km 1.515 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.202   0.129 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

6666 Fro (1993 FG20)          Discovered 1993-Mar-19 by UESAC at La Silla
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1993 FG20 = 1962 WD2 = 1974 QG = 1991 XG2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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