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109205 (2001 QP81)
Classification: Main-belt Asteroid          SPK-ID: 2109205
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 .2448374991764046 4.4858e-08  
a 2.318286773332566 7.6158e-09 au
q 1.750683237376084 1.0536e-07 au
i 5.089835378391141 4.0215e-06 deg
node 280.0110403792862 5.0741e-05 deg
peri 81.43911400224951 5.156e-05 deg
M 112.6820888774983 8.4979e-06 deg
tp 2458596.946097465597
(2019-Apr-23.44609747)
2.9536e-05 TDB
period 1289.285691804352
3.53
6.3531e-06
1.739e-08
d
yr
n .2792243816001564 1.3759e-09 deg/d
Q 2.885890309289048 9.4804e-09 au
  Orbit Determination Parameters
   # obs. used (total)      862  
   data-arc span      7766 days (21.26 yr)  
   first obs. used      1998-10-23  
   last obs. used      2020-01-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49015  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-24 03:21:25  

Additional Information
 Earth MOID = .756644 au 
 Jupiter MOID = 2.60403 au 
 T_jup = 3.534 
[ 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 15.7   n/a MPO502754  
diameter diameter 2.134 km 0.546 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2016AJ....152...63N)  
geometric albedo albedo 0.186   0.078 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2016AJ....152...63N)  

109205 (2001 QP81)          Discovered 2001-Aug-17 by LINEAR at Socorro
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

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