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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 ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1833255815581787 4.0909e-08  
a 2.461335426587421 1.499e-08 au
q 2.010109678098535 1.0282e-07 au
i 5.524397832918251 5.6205e-06 deg
node 215.7782848012176 5.0765e-05 deg
peri 105.3916958238308 5.4505e-05 deg
M 142.1684311458546 2.506e-05 deg
tp 2458043.499864273901
(2017-Oct-16.99986427)
9.4824e-05 TDB
period 1410.440048084069
3.86
1.2885e-05
3.528e-08
d
yr
n .2552394910290737 2.3316e-09 deg/d
Q 2.912561175076308 1.7738e-08 au
  Orbit Determination Parameters
   # obs. used (total)      678  
   data-arc span      7449 days (20.39 yr)  
   first obs. used      1998-08-17  
   last obs. used      2019-01-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5506  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 02:39:36  

Additional Information
 Earth MOID = 1.00543 au 
 Jupiter MOID = 2.4262 au 
 T_jup = 3.460 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456036.5 (2012-Apr-19.0) TDB
Reference: JPL 16 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1847695425322967 4.1129e-08  
q 2.005659269353589 1.0356e-07 au
tp 2456630.702108046769
(2013-Dec-04.20210805)
8.5732e-05 TDB
node 215.9359015481706 5.0894e-05 deg
peri 104.8107732105281 5.4509e-05 deg
i 5.516989914209004 5.6166e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      678  
   data-arc span      7449 days (20.39 yr)  
   first obs. used      1998-08-17  
   last obs. used      2019-01-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5506  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 02:39:36  

Additional Information
 Jupiter MOID = 2.4262 au 
 T_jup = 3.460 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.69159277403767E-15 -4.229993401617963E-15 -7.278070639684045E-14 6.559504568152183E-15 -3.37945915033362E-14 1.225669514893174E-15
q -4.229993401617963E-15 1.07250192922256E-14 7.797220388764349E-13 -1.619994671396229E-14 2.008830581387466E-13 -2.490836301086084E-15
tp -7.278070639684045E-14 7.797220388764349E-13 7.350023128291344E-9 -1.136678785543636E-11 1.689652808137554E-9 4.715039354853235E-12
node 6.559504568152183E-15 -1.619994671396229E-14 -1.136678785543636E-11 2.590181116685529E-9 -2.579993797650306E-9 3.309061742986337E-11
peri -3.37945915033362E-14 2.008830581387466E-13 1.689652808137554E-9 -2.579993797650306E-9 2.971239073988072E-9 -3.188037625261547E-11
i 1.225669514893174E-15 -2.490836301086084E-15 4.715039354853235E-12 3.309061742986337E-11 -3.188037625261547E-11 3.154636434625549E-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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