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385644 (2005 QH138)
Classification: Main-belt Asteroid          SPK-ID: 2385644
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1653759050925835 6.7493e-08  
a 2.390582682277415 1.3453e-08 au
q 1.995237907497132 1.6305e-07 au
i 2.187720180284497 6.8881e-06 deg
node 66.91963416923225 0.0001403 deg
peri 347.8795554816808 0.00014445 deg
M 54.34649963675002 2.555e-05 deg
tp 2459192.691094416949
(2020-Dec-09.19109442)
9.6433e-05 TDB
period 1350.063141146327
3.70
1.1397e-05
3.12e-08
d
yr
n .2666541949247848 2.251e-09 deg/d
Q 2.785927457057698 1.5678e-08 au
  Orbit Determination Parameters
   # obs. used (total)      170  
   data-arc span      5614 days (15.37 yr)  
   first obs. used      2005-08-28  
   last obs. used      2021-01-10  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .46329  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 11:06:08  

Additional Information
 Earth MOID = 1.00639 au 
 Jupiter MOID = 2.55865 au 
 T_jup = 3.513 
[ hide covariance matrix ]
Orbital Elements at Epoch 2458265.5 (2018-May-27.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .166054122951303 6.7829e-08  
q 1.99324478706754 1.6373e-07 au
tp 2457839.875853374218
(2017-Mar-27.37585337)
9.9419e-05 TDB
node 66.93922451124797 0.00014008 deg
peri 347.2417852067769 0.00014417 deg
i 2.190342884712479 6.8985e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      170  
   data-arc span      5614 days (15.37 yr)  
   first obs. used      2005-08-28  
   last obs. used      2021-01-10  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .46329  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 11:06:08  

Additional Information
 Jupiter MOID = 2.55865 au 
 T_jup = 3.513 
Orbit Covariance (6×6)
  e q tp node peri i
e 4.600745234951841E-15 -1.108110561009627E-14 -6.075042324007097E-13 -7.643221742543031E-14 -3.614857735113572E-14 -5.601162158846678E-15
q -1.108110561009627E-14 2.680699076308162E-14 1.009138773688429E-12 1.814574188985121E-13 -5.387954861675482E-14 1.339602877293367E-14
tp -6.075042324007097E-13 1.009138773688429E-12 9.884103521792643E-9 2.079636204191663E-11 3.401488418348792E-9 6.647430516785927E-12
node -7.643221742543031E-14 1.814574188985121E-13 2.079636204191663E-11 1.962115666402441E-8 -1.960077671810473E-8 -4.883255087406595E-10
peri -3.614857735113572E-14 -5.387954861675482E-14 3.401488418348792E-9 -1.960077671810473E-8 2.078373132136552E-8 4.902584971567988E-10
i -5.601162158846678E-15 1.339602877293367E-14 6.647430516785927E-12 -4.883255087406595E-10 4.902584971567988E-10 4.758880797621019E-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 18.22   n/a MPCxxxxx  

385644 (2005 QH138)          Discovered 2005-Aug-28 by Spacewatch at Kitt Peak
Reference: Last Updated: 2014-02-19

Alternate Designations
 2005 QH138 = 2009 US34 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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