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JPL Small-Body Database Browser
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160551 (1998 QA45)
Classification: Main-belt Asteroid          SPK-ID: 2160551
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .21699282470567 1.0517e-07  
a 2.78131026815339 2.2339e-08 au
q 2.177785896683901 2.8471e-07 au
i 12.1704924378547 8.5415e-06 deg
node 321.8109141679126 3.4971e-05 deg
peri 60.38614448831631 4.229e-05 deg
M 136.8301174716468 1.8389e-05 deg
tp 2457956.550538094181
(2017-Jul-22.05053809)
8.5282e-05 TDB
period 1694.230850412972
4.64
2.0412e-05
5.589e-08
d
yr
n .2124858013961022 2.56e-09 deg/d
Q 3.384834639622878 2.7187e-08 au
  Orbit Determination Parameters
   # obs. used (total)      403  
   data-arc span      7529 days (20.61 yr)  
   first obs. used      1998-08-17  
   last obs. used      2019-03-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53048  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 12:28:17  

Additional Information
 Earth MOID = 1.20744 au 
 Jupiter MOID = 2.23035 au 
 T_jup = 3.266 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456692.5 (2014-Feb-04.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2162827939328069 1.0453e-07  
q 2.181669966698429 2.8269e-07 au
tp 2456263.410963492645
(2012-Dec-01.91096349)
8.6455e-05 TDB
node 321.8206391411074 3.4974e-05 deg
peri 60.83741431709301 4.2375e-05 deg
i 12.16634806474269 8.538e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      403  
   data-arc span      7529 days (20.61 yr)  
   first obs. used      1998-08-17  
   last obs. used      2019-03-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53048  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-13 12:28:17  

Additional Information
 Jupiter MOID = 2.23035 au 
 T_jup = 3.266 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.092618050527158E-14 -2.950502047912704E-14 -3.084504721316366E-12 3.656138009337937E-15 -1.334026207005513E-12 -3.89500307150873E-14
q -2.950502047912704E-14 7.991583161868608E-14 8.307305627551965E-12 -9.302622967285583E-15 3.60206508547565E-12 1.07327117324775E-13
tp -3.084504721316366E-12 8.307305627551965E-12 7.474546061445942E-9 -3.872696915656703E-11 2.067574427274912E-9 -1.037667590753773E-11
node 3.656138009337937E-15 -9.302622967285583E-15 -3.872696915656703E-11 1.223193141365082E-9 -1.204744750379542E-9 2.053340748554498E-11
peri -1.334026207005513E-12 3.60206508547565E-12 2.067574427274912E-9 -1.204744750379542E-9 1.795639174276664E-9 -2.049856730931208E-11
i -3.89500307150873E-14 1.07327117324775E-13 -1.037667590753773E-11 2.053340748554498E-11 -2.049856730931208E-11 7.28982707669532E-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 15.1   n/a MPO436809  

160551 (1998 QA45)          Discovered 1998-Aug-17 by LINEAR at Socorro
Reference: 20070828/Numbers.arcLast Updated: 2007-08-30

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