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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1836748384091249 4.0033e-08  
a 2.460611968540681 1.4081e-08 au
q 2.008659462831413 1.0144e-07 au
i 5.524818665028929 5.0178e-06 deg
node 215.7677514644197 4.6124e-05 deg
peri 105.4307663501952 5.0009e-05 deg
M 244.2550448542798 2.5658e-05 deg
tp 2459453.775969239036
(2021-Aug-27.27596924)
0.00010341 TDB
period 1409.818239772214
3.86
1.2102e-05
3.313e-08
d
yr
n .255352065850819 2.1919e-09 deg/d
Q 2.912564474249949 1.6667e-08 au
  Orbit Determination Parameters
   # obs. used (total)      759  
   data-arc span      7918 days (21.68 yr)  
   first obs. used      1998-08-17  
   last obs. used      2020-04-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54267  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 09:35:34  

Additional Information
 Earth MOID = 1.00486 au 
 Jupiter MOID = 2.42891 au 
 T_jup = 3.460 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456592.5 (2013-Oct-27.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1844615656923541 4.0203e-08  
q 2.006905090553643 1.0211e-07 au
tp 2456630.611772318500
(2013-Dec-04.11177232)
8.5477e-05 TDB
node 215.9322974684979 4.6249e-05 deg
peri 104.7279074395875 5.0039e-05 deg
i 5.516411982754892 5.0121e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      759  
   data-arc span      7918 days (21.68 yr)  
   first obs. used      1998-08-17  
   last obs. used      2020-04-21  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54267  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 09:35:34  

Additional Information
 Jupiter MOID = 2.42891 au 
 T_jup = 3.460 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.616314740177753E-15 -4.079622489271721E-15 -7.727419305821926E-15 7.595037318187334E-15 9.190637954254328E-16 1.376680619889903E-15
q -4.079622489271721E-15 1.042586764128502E-14 6.576182099061655E-13 -1.8719684815654E-14 1.333935582464662E-13 -2.869412145469434E-15
tp -7.727419305821926E-15 6.576182099061655E-13 7.306263974674463E-9 -4.644373622339635E-12 1.652621418915111E-9 5.65190838727358E-12
node 7.595037318187334E-15 -1.8719684815654E-14 -4.644373622339635E-12 2.138933576941666E-9 -2.129353284236819E-9 -1.953619336647348E-11
peri 9.190637954254328E-16 1.333935582464662E-13 1.652621418915111E-9 -2.129353284236819E-9 2.503882400542416E-9 2.072209209372701E-11
i 1.376680619889903E-15 -2.869412145469434E-15 5.65190838727358E-12 -1.953619336647348E-11 2.072209209372701E-11 2.512113609550272E-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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