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187090 (2005 PK9)
Classification: Main-belt Asteroid          SPK-ID: 2187090
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 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07422043673224621 6.422e-08  
a 2.512004562575317 1.6489e-08 au
q 2.325562486867582 1.6459e-07 au
i 1.422571590391832 5.8657e-06 deg
node 358.8483767716132 0.00015816 deg
peri 346.0398906901335 0.00016146 deg
M 290.4709620594239 3.3652e-05 deg
tp 2459481.361869362869
(2021-Sep-23.86186936)
0.00013732 TDB
period 1454.216482285403
3.98
1.4318e-05
3.92e-08
d
yr
n .2475559893491476 2.4375e-09 deg/d
Q 2.698446638283053 1.7713e-08 au
  Orbit Determination Parameters
   # obs. used (total)      236  
   data-arc span      6877 days (18.83 yr)  
   first obs. used      2001-08-25  
   last obs. used      2020-06-23  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .56875  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:53:58  

Additional Information
 Earth MOID = 1.31602 au 
 Jupiter MOID = 2.57736 au 
 T_jup = 3.457 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457638.5 (2016-Sep-07.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07336849283121069 6.4309e-08  
q 2.327421804248767 1.6451e-07 au
tp 2458029.042602732477
(2017-Oct-02.54260273)
0.00013164 TDB
node 358.8776841142672 0.00015814 deg
peri 346.4410549310538 0.00016148 deg
i 1.422742008167916 5.8661e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      236  
   data-arc span      6877 days (18.83 yr)  
   first obs. used      2001-08-25  
   last obs. used      2020-06-23  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .56875  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:53:58  

Additional Information
 Jupiter MOID = 2.57736 au 
 T_jup = 3.457 
Orbit Covariance (6×6)
  e q tp node peri i
e 4.135655963897657E-15 -1.053396731088104E-14 1.774592537978897E-12 -6.846534732866941E-14 6.90459427661803E-13 1.13394171370965E-16
q -1.053396731088104E-14 2.706220241223973E-14 -3.588480922911131E-12 1.708479267730069E-13 -1.548007941701781E-12 -1.916939593090976E-16
tp 1.774592537978897E-12 -3.588480922911131E-12 1.732923782387817E-8 -7.174493164615207E-11 4.284646136208884E-9 3.876834540945114E-13
node -6.846534732866941E-14 1.708479267730069E-13 -7.174493164615207E-11 2.50073773751558E-8 -2.501968839400347E-8 2.177401338729108E-10
peri 6.90459427661803E-13 -1.548007941701781E-12 4.284646136208884E-9 -2.501968839400347E-8 2.607691321391375E-8 -2.175799610253595E-10
i 1.13394171370965E-16 -1.916939593090976E-16 3.876834540945114E-13 2.177401338729108E-10 -2.175799610253595E-10 3.441081362214973E-11

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 17.22   n/a E2021B55  

187090 (2005 PK9)          Discovered 2005-Aug-04 by NEAT at Palomar
Reference: 20080520/Numbers.arcLast Updated: 2008-05-22

[ show close-approach data ]
Alternate Designations
 2005 PK9 = 2004 GF66 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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