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109245 (2001 QE99)
Classification: Main-belt Asteroid          SPK-ID: 2109245
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2729506690613109 5.2332e-08  
a 2.474064182518997 1.375e-08 au
q 1.798766708599811 1.2486e-07 au
i 6.982109579208687 5.1148e-06 deg
node 218.6122233157868 4.4191e-05 deg
peri 192.3910432409188 4.6621e-05 deg
M 175.177489815584 1.9678e-05 deg
tp 2457908.843173104484
(2017-Jun-04.34317310)
7.2608e-05 TDB
period 1421.395282832936
3.89
1.1849e-05
3.244e-08
d
yr
n .2532722630699153 2.1114e-09 deg/d
Q 3.149361656438182 1.7503e-08 au
  Orbit Determination Parameters
   # obs. used (total)      693  
   data-arc span      7861 days (21.52 yr)  
   first obs. used      1997-10-30  
   last obs. used      2019-05-09  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56502  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 06:46:22  

Additional Information
 Earth MOID = .80952 au 
 Jupiter MOID = 2.23954 au 
 T_jup = 3.420 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456550.5 (2013-Sep-15.0) TDB
Reference: JPL 21 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2739780021393234 5.2509e-08  
q 1.795477857494162 1.2553e-07 au
tp 2456490.028740220499
(2013-Jul-16.52874022)
6.2457e-05 TDB
node 218.6554908948422 4.4177e-05 deg
peri 192.5001348841893 4.6573e-05 deg
i 6.984561588237113 5.1172e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      693  
   data-arc span      7861 days (21.52 yr)  
   first obs. used      1997-10-30  
   last obs. used      2019-05-09  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56502  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 06:46:22  

Additional Information
 Jupiter MOID = 2.23954 au 
 T_jup = 3.420 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.757163778210437E-15 -6.576620009032557E-15 1.506290876091762E-12 -1.021180118983901E-14 2.929213323224709E-13 -3.680737522468613E-15
q -6.576620009032557E-15 1.575842173080464E-14 -3.245587610667799E-12 2.318659249930218E-14 -6.162795503420851E-13 8.062018949825015E-15
tp 1.506290876091762E-12 -3.245587610667799E-12 3.900901501727331E-9 -2.941396716690102E-11 9.472588769486468E-10 -8.689217921794148E-12
node -1.021180118983901E-14 2.318659249930218E-14 -2.941396716690102E-11 1.951593736412534E-9 -1.943550476027606E-9 5.910979580548969E-12
peri 2.929213323224709E-13 -6.162795503420851E-13 9.472588769486468E-10 -1.943550476027606E-9 2.16900474655799E-9 -7.873702144356949E-12
i -3.680737522468613E-15 8.062018949825015E-15 -8.689217921794148E-12 5.910979580548969E-12 -7.873702144356949E-12 2.618601757858894E-11

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 15.2   n/a MPO280505  
diameter diameter 4.468 km 0.067 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.081   0.016 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

109245 (2001 QE99)          Discovered 2001-Aug-22 by LINEAR at Socorro
Reference: 20051019/Numbers.arcLast Updated: 2005-10-26

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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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