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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 ]

[ 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 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1837843549342543 3.9944e-08  
a 2.460474852574321 1.3897e-08 au
q 2.008278068961995 1.013e-07 au
i 5.525088749281541 4.9919e-06 deg
node 215.7664939166053 4.5463e-05 deg
peri 105.4493207306549 4.9405e-05 deg
M 295.3209701774052 2.5985e-05 deg
tp 2459453.772372747429
(2021-Aug-27.27237275)
0.00010338 TDB
period 1409.700399637451
3.86
1.1943e-05
3.27e-08
d
yr
n .2553734113238426 2.1635e-09 deg/d
Q 2.912671636186646 1.6451e-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.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .54083  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 09:53:03  

Additional Information
 Earth MOID = 1.00255 au 
 Jupiter MOID = 2.42866 au 
 T_jup = 3.460 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456673.5 (2014-Jan-16.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1843832965773477 4.0113e-08  
q 2.006902834352987 1.0195e-07 au
tp 2456630.593768328522
(2013-Dec-04.09376833)
8.5483e-05 TDB
node 215.9302201741129 4.559e-05 deg
peri 104.7231940141849 4.944e-05 deg
i 5.516472655110898 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.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .54083  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 09:53:03  

Additional Information
 Jupiter MOID = 2.42866 au 
 T_jup = 3.460 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.609075664868023E-15 -4.064452198226793E-15 -2.725166605892519E-15 6.709105789989289E-15 4.6331699049864E-15 1.32025053602332E-15
q -4.064452198226793E-15 1.039419928849019E-14 6.48810556720487E-13 -1.690885977908794E-14 1.260595806047907E-13 -2.744004757938309E-15
tp -2.725166605892519E-15 6.48810556720487E-13 7.307305301379899E-9 -7.086894744667485E-12 1.654424462128924E-9 5.494559098784013E-12
node 6.709105789989289E-15 -1.690885977908794E-14 -7.086894744667485E-12 2.078433838249072E-9 -2.069677606638183E-9 -2.352861259382075E-11
peri 4.6331699049864E-15 1.260595806047907E-13 1.654424462128924E-9 -2.069677606638183E-9 2.444301460125036E-9 2.466183476751538E-11
i 1.32025053602332E-15 -2.744004757938309E-15 5.494559098784013E-12 -2.352861259382075E-11 2.466183476751538E-11 2.485969150442614E-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 15.17   n/a E2021B10  

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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