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JPL Small-Body Database Browser
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172969 (2005 QA20)
Classification: Main-belt Asteroid          SPK-ID: 2172969
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .136115471191759 5.8725e-08  
a 2.345263340657553 1.4784e-08 au
q 2.026036715975192 1.359e-07 au
i 7.781932411913751 4.8906e-06 deg
node 135.9355894928831 4.7221e-05 deg
peri 220.0062841091735 5.0351e-05 deg
M 18.19666882622994 1.9939e-05 deg
tp 2458934.190578380755
(2020-Mar-25.69057838)
7.2401e-05 TDB
period 1311.855043958274
3.59
1.2405e-05
3.396e-08
d
yr
n .2744205632001599 2.5949e-09 deg/d
Q 2.664489965339915 1.6797e-08 au
  Orbit Determination Parameters
   # obs. used (total)      392  
   data-arc span      7101 days (19.44 yr)  
   first obs. used      1998-09-17  
   last obs. used      2018-02-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .60698  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Mar-06 01:11:21  

Additional Information
 Earth MOID = 1.0272 au 
 Jupiter MOID = 2.7622 au 
 T_jup = 3.537 
[ 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 16.2   n/a MPO436859  

172969 (2005 QA20)          Discovered 2005-Aug-26 by LONEOS at Anderson Mesa
Reference: 20071224/Numbers.arcLast Updated: 2007-12-22

[ show close-approach data ]
Alternate Designations
 2005 QA20 = 2004 EC89 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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