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117163 (2004 QA20)
Classification: Main-belt Asteroid          SPK-ID: 2117163
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3195589845399285 5.5279e-08  
a 2.640460823779545 1.3306e-08 au
q 1.796677844215091 1.4318e-07 au
i 12.46541643533898 5.8393e-06 deg
node 64.83850904053708 1.9339e-05 deg
peri 292.0004021329285 2.1597e-05 deg
M 247.8979747774329 1.173e-05 deg
tp 2459488.510287366577
(2021-Oct-01.01028737)
5.329e-05 TDB
period 1567.176891792685
4.29
1.1846e-05
3.243e-08
d
yr
n .2297124223087529 1.7364e-09 deg/d
Q 3.484243803344 1.7558e-08 au
  Orbit Determination Parameters
   # obs. used (total)      604  
   data-arc span      7622 days (20.87 yr)  
   first obs. used      1999-06-15  
   last obs. used      2020-04-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54524  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 20:09:10  

Additional Information
 Earth MOID = .837165 au 
 Jupiter MOID = 2.1153 au 
 T_jup = 3.289 
[ 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 15.3   n/a MPO436562  

117163 (2004 QA20)          Discovered 2004-Aug-22 by Goodricke-Pigott at Goodricke-Pigott
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
Alternate Designations
 2004 QA20 = 2000 WH120 = 2003 KH33 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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