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101002 (1998 QE46)
Classification: Main-belt Asteroid          SPK-ID: 2101002
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ hide orbit diagram ]

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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2029301733791048 4.2795e-08  
a 2.244878709467809 8.2893e-09 au
q 1.789325083740446 9.6716e-08 au
i 6.089932178779656 4.0958e-06 deg
node 159.4742403512102 3.88e-05 deg
peri 228.6532819605308 4.024e-05 deg
M 194.1699865071926 1.0241e-05 deg
tp 2459766.411323314295
(2022-Jul-05.91132331)		 3.6554e-05 TDB
period 1228.535607650918
3.36		 6.8046e-06
1.863e-08		 d
yr
n .2930317996141403 1.623e-09 deg/d
Q 2.700432335195173 9.9715e-09 au
   Orbit Determination Parameters
   # obs. used (total)      519  
   data-arc span      7948 days (21.76 yr)  
   first obs. used      1998-08-17  
   last obs. used      2020-05-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55502  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 20:03:00  

Additional Information
 Earth MOID = .798966 au 
 Jupiter MOID = 2.75917 au 
 T_jup = 3.597 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457199.5 (2015-Jun-26.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .202397712482457 4.2858e-08  
q 1.791115070543965 9.6875e-08 au
tp 2457306.983289098788
(2015-Oct-11.48328910)		 3.1452e-05 TDB
node 159.5310969954781 3.8745e-05 deg
peri 228.2488811130542 4.0203e-05 deg
i 6.092531592566357 4.0986e-06 deg
   Orbit Determination Parameters
   # obs. used (total)      519  
   data-arc span      7948 days (21.76 yr)  
   first obs. used      1998-08-17  
   last obs. used      2020-05-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55502  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 20:03:00  

Additional Information
 Jupiter MOID = 2.75917 au 
 T_jup = 3.597 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.836790229351843E-15 -4.142150272167411E-15 -1.946818100174678E-13 1.934795756557647E-14 -1.331997315325622E-13 -8.727204014516526E-15
q -4.142150272167411E-15 9.384704562442341E-15 4.820558975928676E-13 -4.311958157929202E-14 3.109407935842489E-13 1.990084110423998E-14
tp -1.946818100174678E-13 4.820558975928676E-13 9.892456486558012E-10 4.119480393796764E-12 3.466916843690729E-10 5.178231187671745E-13
node 1.934795756557647E-14 -4.311958157929202E-14 4.119480393796764E-12 1.501211435821021E-9 -1.491432968090413E-9 2.984235656558443E-11
peri -1.331997315325622E-13 3.109407935842489E-13 3.466916843690729E-10 -1.491432968090413E-9 1.616252383670421E-9 -2.936618028346905E-11
i -8.727204014516526E-15 1.990084110423998E-14 5.178231187671745E-13 2.984235656558443E-11 -2.936618028346905E-11 1.679833839942263E-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 16.87   n/a E2021B55  

101002 (1998 QE46)          Discovered 1998-Aug-17 by LINEAR at Socorro
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

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