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JPL Small-Body Database Browser
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18172 (2000 QL7)
Classification: Amor [NEO]          SPK-ID: 2018172
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 227 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .511032643034275 3.0526e-08  
a 2.424638967858709 4.1333e-09 au
q 1.185569307709976 7.4355e-08 au
i 17.83219338218137 5.9181e-06 deg
node 338.4659968245398 1.2652e-05 deg
peri 100.7778473054183 1.5767e-05 deg
M 300.0915340592915 3.0559e-06 deg
tp 2458829.985233734154
(2019-Dec-12.48523373)
1.1596e-05 TDB
period 1379.015183364224
3.78
3.5262e-06
9.654e-09
d
yr
n .261055863882332 6.6754e-10 deg/d
Q 3.663708628007441 6.2456e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1428  
   data-arc span      15527 days (42.51 yr)  
   first obs. used      1977-07-21  
   last obs. used      2020-01-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .40059  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jan-25 05:45:59  

Additional Information
 Earth MOID = .365273 au 
 Jupiter MOID = 2.0733 au 
 T_jup = 3.263 
[ 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 15.6   n/a MPO347666  

18172 (2000 QL7)          Discovered 2000-Aug-25 by LINEAR at Socorro
Reference: 20001013/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 2000 QL7 = 1986 CA 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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