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227163 (2005 QE18)
Classification: Main-belt Asteroid          SPK-ID: 2227163
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2081629652473001 6.8597e-08  
a 2.436683828212871 1.2608e-08 au
q 1.929456497161937 1.7297e-07 au
i 5.28200781311624 7.8192e-06 deg
node 155.4996476232206 4.3355e-05 deg
peri 224.2243830798519 4.7121e-05 deg
M 348.7708729160795 1.9248e-05 deg
tp 2459243.835188948442
(2021-Jan-29.33518895)
7.445e-05 TDB
period 1389.30371923374
3.80
1.0783e-05
2.952e-08
d
yr
n .2591226058176504 2.0111e-09 deg/d
Q 2.943911159263805 1.5232e-08 au
  Orbit Determination Parameters
   # obs. used (total)      206  
   data-arc span      7049 days (19.30 yr)  
   first obs. used      2001-08-16  
   last obs. used      2020-12-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5455  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 13:11:00  

Additional Information
 Earth MOID = .934166 au 
 Jupiter MOID = 2.52354 au 
 T_jup = 3.468 
[ show covariance matrix ]

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 17.34   n/a E2021B55  

227163 (2005 QE18)          Discovered 2005-Aug-25 by NEAT at Palomar
Reference: 20091202/Numbers.arcLast Updated: 2009-12-04

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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