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344638 (2003 QK9)
Classification: Main-belt Asteroid          SPK-ID: 2344638
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2496163313915558 7.4546e-08  
a 2.651571351822877 2.4551e-08 au
q 1.989695838557902 1.9865e-07 au
i 6.560991183349277 1.3451e-05 deg
node 170.7167043237497 5.4714e-05 deg
peri 129.3867347756626 6.0566e-05 deg
M 22.27203714801824 2.3469e-05 deg
tp 2459102.931226508510
(2020-Sep-10.43122651)
0.00010258 TDB
period 1577.078837624958
4.32
2.1903e-05
5.997e-08
d
yr
n .2282701355261041 3.1703e-09 deg/d
Q 3.313446865087851 3.0679e-08 au
  Orbit Determination Parameters
   # obs. used (total)      142  
   data-arc span      8122 days (22.24 yr)  
   first obs. used      1998-04-17  
   last obs. used      2020-07-12  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .59544  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 08:33:06  

Additional Information
 Earth MOID = .980174 au 
 Jupiter MOID = 1.9746 au 
 T_jup = 3.336 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456830.5 (2014-Jun-22.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2476338946115617 7.4074e-08  
q 1.997722142423387 1.9717e-07 au
tp 2457525.955928656481
(2016-May-17.45592866)
0.00010299 TDB
node 170.7916697656641 5.484e-05 deg
peri 129.1608540308834 6.0779e-05 deg
i 6.548390862459055 1.3428e-05 deg
  Orbit Determination Parameters
   # obs. used (total)      142  
   data-arc span      8122 days (22.24 yr)  
   first obs. used      1998-04-17  
   last obs. used      2020-07-12  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .59544  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 08:33:06  

Additional Information
 Jupiter MOID = 1.9746 au 
 T_jup = 3.336 
Orbit Covariance (6×6)
  e q tp node peri i
e 5.486890186194722E-15 -1.453982676825134E-14 5.000321118693041E-12 2.974536879421947E-14 1.211132905916864E-12 -9.936160758851275E-15
q -1.453982676825134E-14 3.887445155866266E-14 -1.338019080327824E-11 -8.203099986148836E-14 -3.297618745117283E-12 2.711165997899844E-14
tp 5.000321118693041E-12 -1.338019080327824E-11 1.060775067438875E-8 4.162297460882468E-11 2.711053280608258E-9 -1.763203059857449E-11
node 2.974536879421947E-14 -8.203099986148836E-14 4.162297460882468E-11 3.007427810159825E-9 -2.973639591179005E-9 2.129178156698438E-10
peri 1.211132905916864E-12 -3.297618745117283E-12 2.711053280608258E-9 -2.973639591179005E-9 3.694045526754333E-9 -2.153970318322626E-10
i -9.936160758851275E-15 2.711165997899844E-14 -1.763203059857449E-11 2.129178156698438E-10 -2.153970318322626E-10 1.803207673098801E-10

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 17.11   n/a E2021B25  

344638 (2003 QK9)          Discovered 2003-Aug-20 by CINEOS at Campo Imperatore
Reference: 20121128/Numbers.arcLast Updated: 2012-12-03

[ show close-approach data ]
Alternate Designations
 2003 QK9 = 1998 HP8 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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