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181139 (2005 QZ157)
Classification: Main-belt Asteroid          SPK-ID: 2181139
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 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04508903139658154 4.4005e-08  
a 2.778113108556509 2.3075e-08 au
q 2.65285067938155 1.176e-07 au
i 4.057247309984893 4.0929e-06 deg
node 88.65285112246549 7.5194e-05 deg
peri 197.4273506837333 9.8196e-05 deg
M 172.5503195620807 6.6148e-05 deg
tp 2458389.844040790054
(2018-Sep-28.34404079)
0.00030658 TDB
period 1691.310372859569
4.63
2.1072e-05
5.769e-08
d
yr
n .2128527121792159 2.6519e-09 deg/d
Q 2.903375537731467 2.4115e-08 au
  Orbit Determination Parameters
   # obs. used (total)      352  
   data-arc span      7023 days (19.23 yr)  
   first obs. used      2001-11-14  
   last obs. used      2021-02-05  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .5482  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:29:22  

Additional Information
 Earth MOID = 1.63484 au 
 Jupiter MOID = 2.15696 au 
 T_jup = 3.329 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457306.5 (2015-Oct-11.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04717419168900084 4.4081e-08  
q 2.645769192870802 1.1798e-07 au
tp 2456701.956681252285
(2014-Feb-13.45668125)
0.00028639 TDB
node 88.71332531904356 7.5305e-05 deg
peri 197.9156557625542 9.6642e-05 deg
i 4.055628282997524 4.0899e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      352  
   data-arc span      7023 days (19.23 yr)  
   first obs. used      2001-11-14  
   last obs. used      2021-02-05  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .5482  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:29:22  

Additional Information
 Jupiter MOID = 2.15696 au 
 T_jup = 3.329 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.943118751718243E-15 -5.118116026867712E-15 4.603040972363755E-12 3.693729095125734E-15 9.250298788230495E-13 -6.67606885043528E-16
q -5.118116026867712E-15 1.391879993973819E-14 -1.071310524301878E-11 -8.903546552946751E-15 -2.108932996235525E-12 2.154059861702142E-15
tp 4.603040972363755E-12 -1.071310524301878E-11 8.202057258756742E-8 4.048066055890375E-11 1.738168925954715E-8 -6.400225580866507E-12
node 3.693729095125734E-15 -8.903546552946751E-15 4.048066055890375E-11 5.670841614325559E-9 -5.647899318599136E-9 1.280872432588954E-11
peri 9.250298788230495E-13 -2.108932996235525E-12 1.738168925954715E-8 -5.647899318599136E-9 9.339713497255014E-9 -1.411537876141385E-11
i -6.67606885043528E-16 2.154059861702142E-15 -6.400225580866507E-12 1.280872432588954E-11 -1.411537876141385E-11 1.672730092519041E-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 16.19   n/a MPCxxxxx  

181139 (2005 QZ157)          Discovered 2005-Aug-26 by NEAT at Palomar
Reference: 20080321/Numbers.arcLast Updated: 2008-03-26

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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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