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172971 (2005 QN176)
Classification: Main-belt Asteroid          SPK-ID: 2172971
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 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .09986738560867119 4.7881e-08  
a 3.116256716664088 3.709e-08 au
q 2.805044305485384 1.5496e-07 au
i 16.80493318881802 7.8672e-06 deg
node 309.871279379499 2.0692e-05 deg
peri 306.9640898588805 5.6614e-05 deg
M 338.0315736057406 5.7551e-05 deg
tp 2459123.115314621642
(2020-Sep-30.61531462)
0.00032169 TDB
period 2009.316119033715
5.50
3.5873e-05
9.821e-08
d
yr
n .179165436732337 3.1987e-09 deg/d
Q 3.427469127842791 4.0795e-08 au
  Orbit Determination Parameters
   # obs. used (total)      585  
   data-arc span      6697 days (18.34 yr)  
   first obs. used      2000-12-01  
   last obs. used      2019-04-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50068  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-14 04:31:28  

Additional Information
 Earth MOID = 1.82274 au 
 Jupiter MOID = 1.88874 au 
 T_jup = 3.144 
[ 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 14.4   n/a MPO475465  
diameter diameter 8.310 km 0.190 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.059   0.009 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

172971 (2005 QN176)          Discovered 2005-Aug-31 by CINEOS at Campo Imperatore
Reference: 20071224/Numbers.arcLast Updated: 2007-12-22

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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