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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 13 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .165234156250021 6.7508e-08  
a 2.390178730080205 1.3431e-08 au
q 1.995239564328656 1.6304e-07 au
i 2.18780808510143 6.8887e-06 deg
node 66.92106239291968 0.00014029 deg
peri 347.8626061738914 0.00014445 deg
M 2.095766853851176 2.5736e-05 deg
tp 2459192.642498737027
(2020-Dec-09.14249874)
9.6513e-05 TDB
period 1349.720962268344
3.70
1.1377e-05
3.115e-08
d
yr
n .2667217966260101 2.2482e-09 deg/d
Q 2.785117895831754 1.565e-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 = 1.00606 au 
 Jupiter MOID = 2.55863 au 
 T_jup = 3.513 
[ show covariance matrix ]

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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