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46856 (1998 QK45)
Classification: Main-belt Asteroid          SPK-ID: 2046856
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .183674837064467 3.9944e-08  
a 2.460611967883816 1.4019e-08 au
q 2.008659465603879 1.013e-07 au
i 5.524818439194652 4.9916e-06 deg
node 215.7677480289485 4.5465e-05 deg
peri 105.430770250059 4.9407e-05 deg
M 244.2550448928054 2.5658e-05 deg
tp 2459453.775968906660
(2021-Aug-27.27596891)
0.00010341 TDB
period 1409.818239207684
3.86
1.2048e-05
3.299e-08
d
yr
n .2553520659530689 2.1822e-09 deg/d
Q 2.912564470163754 1.6594e-08 au
  Orbit Determination Parameters
   # obs. used (total)      767  
   data-arc span      7949 days (21.76 yr)  
   first obs. used      1998-08-17  
   last obs. used      2020-05-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54055  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 23:45:09  

Additional Information
 Earth MOID = 1.00486 au 
 Jupiter MOID = 2.42891 au 
 T_jup = 3.460 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456673.5 (2014-Jan-16.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1843832987532002 4.0113e-08  
q 2.006902825847084 1.0195e-07 au
tp 2456630.593764503637
(2013-Dec-04.09376450)
8.5483e-05 TDB
node 215.9302198499787 4.559e-05 deg
peri 104.7231932526392 4.944e-05 deg
i 5.516472667771239 4.9859e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      767  
   data-arc span      7949 days (21.76 yr)  
   first obs. used      1998-08-17  
   last obs. used      2020-05-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54055  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 23:45:09  

Additional Information
 Jupiter MOID = 2.42891 au 
 T_jup = 3.460 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.609075365602328E-15 -4.064452157279524E-15 -2.725863055131756E-15 6.709065022471541E-15 4.633011181720752E-15 1.320241308695931E-15
q -4.064452157279524E-15 1.039420100651745E-14 6.488111477642974E-13 -1.690869646762359E-14 1.260596805533956E-13 -2.743963057244891E-15
tp -2.725863055131756E-15 6.488111477642974E-13 7.307303667085824E-9 -7.086807354173874E-12 1.654423647506441E-9 5.494571457965203E-12
node 6.709065022471541E-15 -1.690869646762359E-14 -7.086807354173874E-12 2.078433816919515E-9 -2.069677558916847E-9 -2.352860777303627E-11
peri 4.633011181720752E-15 1.260596805533956E-13 1.654423647506441E-9 -2.069677558916847E-9 2.444301167579929E-9 2.466183437198078E-11
i 1.320241308695931E-15 -2.743963057244891E-15 5.494571457965203E-12 -2.352860777303627E-11 2.466183437198078E-11 2.485969071368326E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.2   n/a MPO365800  

46856 (1998 QK45)          Discovered 1998-Aug-17 by LINEAR at Socorro
Reference: 20020921/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1998 QK45 = 2001 FR170 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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