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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 ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 300 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .5110881326713687 2.1317e-08  
a 2.424329198272198 3.9627e-09 au
q 1.185283315346584 5.1614e-08 au
i 17.83364030763024 4.7302e-06 deg
node 338.4621013271185 9.4443e-06 deg
peri 100.7630208867756 1.2694e-05 deg
M 96.75254254087584 2.7949e-06 deg
tp 2458829.950952856585
(2019-Dec-12.45095286)
1.0791e-05 TDB
period 1378.750919287437
3.77
3.3805e-06
9.255e-09
d
yr
n .2611059002492302 6.4019e-10 deg/d
Q 3.663375081197811 5.988e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1883  
   data-arc span      15646 days (42.84 yr)  
   first obs. used      1977-07-21  
   last obs. used      2020-05-22  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .39118  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-18 06:25:45  

Additional Information
 Earth MOID = .364859 au 
 Jupiter MOID = 2.07394 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 15.61   n/a E2021B10  
rotation period rot_per 2.37512 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Published Reference List:
[Benishek, V. (2020) Minor Planet Bull. 47, 231-241.]
[Kluwak, T. (2020) Minor Planet Bull. 47, 92-93.]
[Pravec, P.; Wolf, M.; Sarounova, L. (2020) http://www.asu.cas.cz/~ppravec/neo.htm]
[Warner, B.D.; Stephens, R.D. (2020) Minor Planet Bull. 47, 200-213.]

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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