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451217 (2009 XE11)
Classification: Amor [NEO]          SPK-ID: 2451217
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 37 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .6113695755942465 1.1465e-06  
a 3.314475635443911 8.1975e-08 au
q 1.288106072885097 3.7939e-06 au
i 14.06488884409661 6.4867e-05 deg
node 99.82657826990709 4.095e-05 deg
peri 107.7701761746068 9.989e-05 deg
M 231.0184832625939 0.00010349 deg
tp 2459790.170023349143
(2022-Jul-29.67002335)
0.00063927 TDB
period 2204.046095879463
6.03
8.1767e-05
2.239e-07
d
yr
n .1633359668262074 6.0595e-09 deg/d
Q 5.340845198002726 1.3209e-07 au
  Orbit Determination Parameters
   # obs. used (total)      136  
   data-arc span      6649 days (18.20 yr)  
   first obs. used      1997-12-26  
   last obs. used      2016-03-10  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .39887  
   source      ORB  
   producer      Otto Matic  
   solution date      2018-Oct-04 12:21:10  

Additional Information
 Earth MOID = .37874 au 
 Jupiter MOID = .857058 au 
 T_jup = 2.795 
[ 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 17.0   n/a MPO368951  
diameter diameter 2.720 km 0.022 urn:nasa:pds:neowise_diameters_albedos::2.0[neos] (http://adsabs.harvard.edu/abs/2011ApJ...743..156M)  
geometric albedo albedo 0.038   0.006 urn:nasa:pds:neowise_diameters_albedos::2.0[neos] (http://adsabs.harvard.edu/abs/2011ApJ...743..156M)  

451217 (2009 XE11)          Discovered 2009-Dec-10 by Mt. Lemmon Survey at Mount Lemmon
Reference: Last Updated: 2015-11-30

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