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109493 (2001 QM228)
Classification: Outer Main-belt Asteroid          SPK-ID: 2109493
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 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .040005463150196 3.7977e-08  
a 3.248968943208694 3.1423e-08 au
q 3.118992435875028 1.2239e-07 au
i 21.75774630339589 5.7788e-06 deg
node 181.8418800758061 1.1185e-05 deg
peri 95.57165612216224 7.8775e-05 deg
M 130.7946955512687 8.0784e-05 deg
tp 2458223.350812417113
(2018-Apr-14.85081242)
0.00047722 TDB
period 2139.029464082312
5.86
3.1032e-05
8.496e-08
d
yr
n .1683006270109736 2.4416e-09 deg/d
Q 3.378945450542361 3.268e-08 au
  Orbit Determination Parameters
   # obs. used (total)      472  
   data-arc span      8890 days (24.34 yr)  
   first obs. used      1995-09-24  
   last obs. used      2020-01-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55311  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 03:26:38  

Additional Information
 Earth MOID = 2.18404 au 
 Jupiter MOID = 1.70917 au 
 T_jup = 3.068 
[ 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 14.7   n/a MPO453555  
diameter diameter 6.358 km 0.235 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.058   0.012 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

109493 (2001 QM228)          Discovered 2001-Aug-24 by LONEOS at Anderson Mesa
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

[ show close-approach data ]
Alternate Designations
 2001 QM228 = 1995 SP36 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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