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181128 (2005 QA127)
Classification: Main-belt Asteroid          SPK-ID: 2181128
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 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1862315875828787 6.2652e-08  
a 3.151653136251148 3.4637e-08 au
q 2.564715769176538 2.0696e-07 au
i .09130338349739475 6.3276e-06 deg
node 251.1795882872377 0.0063079 deg
peri 152.113910647157 0.006308 deg
M 222.0652006114737 3.2453e-05 deg
tp 2459983.528184914368
(2023-Feb-08.02818491)
0.0001924 TDB
period 2043.647780101971
5.60
3.369e-05
9.224e-08
d
yr
n .1761555995632658 2.904e-09 deg/d
Q 3.738590503325757 4.1088e-08 au
  Orbit Determination Parameters
   # obs. used (total)      152  
   data-arc span      9366 days (25.64 yr)  
   first obs. used      1994-09-28  
   last obs. used      2020-05-20  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .56412  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:29:19  

Additional Information
 Earth MOID = 1.57266 au 
 Jupiter MOID = 1.67144 au 
 T_jup = 3.180 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456749.5 (2014-Apr-02.0) TDB
Reference: JPL 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1874833263413583 6.231e-08  
q 2.559690522588415 2.0559e-07 au
tp 2455900.010055156832
(2011-Dec-04.51005516)
0.00015742 TDB
node 251.3711371858868 0.0063122 deg
peri 152.451033179006 0.0063123 deg
i .09122027068199372 6.3339e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      152  
   data-arc span      9366 days (25.64 yr)  
   first obs. used      1994-09-28  
   last obs. used      2020-05-20  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .56412  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:29:19  

Additional Information
 Jupiter MOID = 1.67144 au 
 T_jup = 3.180 
Orbit Covariance (6×6)
  e q tp node peri i
e 3.882589994631552E-15 -1.269696238777506E-14 -3.944764145140435E-12 -3.660423531770559E-15 -6.440405197726153E-13 -4.662046271455489E-17
q -1.269696238777506E-14 4.226525695280605E-14 1.392426204988633E-11 8.283783988796972E-14 2.276462998154602E-12 9.807202879010464E-17
tp -3.944764145140435E-12 1.392426204988633E-11 2.478227711398589E-8 1.223917491471157E-11 4.467058393178536E-9 4.317183628814296E-13
node -3.660423531770559E-15 8.283783988796972E-14 1.223917491471157E-11 3.984413796961679E-5 -3.984407138905976E-5 5.350873794816653E-9
peri -6.440405197726153E-13 2.276462998154602E-12 4.467058393178536E-9 -3.984407138905976E-5 3.984484894685077E-5 -5.35080058122491E-9
i -4.662046271455489E-17 9.807202879010464E-17 4.317183628814296E-13 5.350873794816653E-9 -5.35080058122491E-9 4.01176829667116E-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 16.18   n/a E2021B55  

181128 (2005 QA127)          Discovered 2005-Aug-28 by Spacewatch at Kitt Peak
Reference: 20080321/Numbers.arcLast Updated: 2008-03-26

[ show close-approach data ]
Alternate Designations
 2005 QA127 = 1994 SA4 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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