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101745 (1999 FR8)
Classification: Inner Main-belt Asteroid          SPK-ID: 2101745
[ 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.


Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05280718016095027 5.2571e-08  
a 1.937042267656023 6.9135e-09 au
q 1.834752527648536 1.0355e-07 au
i 22.45053530682809 4.9573e-06 deg
node 183.0725244997835 1.3009e-05 deg
peri 38.6906376142468 4.2821e-05 deg
M 280.6506546356688 4.2502e-05 deg
tp 2459217.544067861474
(2021-Jan-03.04406786)		 0.00011672 TDB
period 984.7071084376445
2.70		 5.2717e-06
1.443e-08		 d
yr
n .3655909426420035 1.9572e-09 deg/d
Q 2.03933200766351 7.2785e-09 au
   Orbit Determination Parameters
   # obs. used (total)      480  
   data-arc span      7674 days (21.01 yr)  
   first obs. used      1999-03-20  
   last obs. used      2020-03-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .6617  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 19:58:44  

Additional Information
 Earth MOID = .851029 au 
 Jupiter MOID = 2.93251 au 
 T_jup = 3.812 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457443.5 (2016-Feb-25.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05281290574807805 5.2589e-08  
q 1.83464799653722 1.0357e-07 au
tp 2457248.419603917950
(2015-Aug-13.91960392)		 0.00011278 TDB
node 183.0929122951378 1.3004e-05 deg
peri 38.75937765037246 4.2798e-05 deg
i 22.45509236899767 4.9583e-06 deg
   Orbit Determination Parameters
   # obs. used (total)      480  
   data-arc span      7674 days (21.01 yr)  
   first obs. used      1999-03-20  
   last obs. used      2020-03-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .6617  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 19:58:44  

Additional Information
 Jupiter MOID = 2.93251 au 
 T_jup = 3.812 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.76564177678279E-15 -5.436566850701526E-15 2.438620062831001E-13 2.555165120594825E-14 1.082067936950216E-13 -3.455735640128082E-15
q -5.436566850701526E-15 1.072733457530507E-14 -2.298050312376844E-13 -4.952134006204303E-14 -1.230264386028411E-13 8.125443081560697E-15
tp 2.438620062831001E-13 -2.298050312376844E-13 1.271938819889827E-8 1.769922811368717E-11 4.618755076201477E-9 2.051311805108641E-11
node 2.555165120594825E-14 -4.952134006204303E-14 1.769922811368717E-11 1.690926208550019E-10 -1.487790722761238E-10 2.080338027633006E-11
peri 1.082067936950216E-13 -1.230264386028411E-13 4.618755076201477E-9 -1.487790722761238E-10 1.831685189512709E-9 -1.182388787606232E-11
i -3.455735640128082E-15 8.125443081560697E-15 2.051311805108641E-11 2.080338027633006E-11 -1.182388787606232E-11 2.458501655590756E-11

[ 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 16.73   n/a E2021B55  

101745 (1999 FR8)          Discovered 1999-Mar-20 by LINEAR at Socorro
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
Alternate Designations
 1999 FR8 = 2002 LS3 
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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