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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 
[ 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 16.73   n/a E2021B55  

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

[ hide close-approach data ]
Close-Approach Data   ...sorted by Date/Time (TDB)
Date/Time (TDB) Time Uncertainty
(days_HH:MM)
Body Nominal Distance (au) Minimum Distance (au) Maximum Distance (au) V-relative (km/s) V-infinity (km/s) JD (TDB) Time Uncertainty (minutes) Semi-major axis (km) Semi-minor axis (km) range-LOV angle (deg) N-sigma BP Orbit Ref. Reference Modified
2013-Oct-31 10:28 < 00:01 Iris 0.00339306783525499 0.00339199782603892 0.00339413813959139 9.53850429108975 9.53850411346633 2456596.935888307 0.236736462922541 87.0693826454772 36.7405862787257 -60.6461477138056 12372.487652442 T 20 CATAB v2.0f-lin.ifort 2020-Nov-12 19:58:45 2020-Nov-12 19:58

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