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249991 (2001 XX65)
Classification: Main-belt Asteroid          SPK-ID: 2249991
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2078711186825939 5.2834e-08  
a 2.844974071292877 2.1352e-08 au
q 2.253586128470253 1.524e-07 au
i 12.17531108012661 5.3816e-06 deg
node 272.3719924712174 2.6055e-05 deg
peri 122.0738522078873 2.9642e-05 deg
M 350.6396620414654 1.346e-05 deg
tp 2459046.072717304681
(2020-Jul-15.57271730)
6.5758e-05 TDB
period 1752.733534020136
4.80
1.9732e-05
5.402e-08
d
yr
n .2053934571413661 2.3123e-09 deg/d
Q 3.436362014115501 2.5791e-08 au
  Orbit Determination Parameters
   # obs. used (total)      368  
   data-arc span      6810 days (18.64 yr)  
   first obs. used      2001-12-09  
   last obs. used      2020-08-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55558  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 17:03:37  

Additional Information
 Earth MOID = 1.28828 au 
 Jupiter MOID = 2.08814 au 
 T_jup = 3.243 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457179.5 (2015-Jun-06.0) TDB
Reference: JPL 14 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2098366076033214 5.3523e-08  
q 2.248380053641528 1.5479e-07 au
tp 2457284.644863460090
(2015-Sep-19.14486346)
5.7199e-05 TDB
node 272.6840507134629 2.6229e-05 deg
peri 120.5736049211213 2.9555e-05 deg
i 12.13085162844078 5.3684e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      368  
   data-arc span      6810 days (18.64 yr)  
   first obs. used      2001-12-09  
   last obs. used      2020-08-01  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55558  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 17:03:37  

Additional Information
 Jupiter MOID = 2.08814 au 
 T_jup = 3.243 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.864684764728099E-15 -8.235079774911975E-15 -1.29912944964661E-13 -1.495025570203821E-14 -6.113862215773028E-14 -9.382954417407776E-15
q -8.235079774911975E-15 2.395950240593207E-14 5.849245555001531E-13 4.227297123236252E-14 2.120106531821686E-13 2.758288053043454E-14
tp -1.29912944964661E-13 5.849245555001531E-13 3.271746182870634E-9 3.921198010009702E-12 8.11696538644677E-10 -2.695453127200751E-12
node -1.495025570203821E-14 4.227297123236252E-14 3.921198010009702E-12 6.879554402125628E-10 -6.70479954384221E-10 -2.621456095210597E-11
peri -6.113862215773028E-14 2.120106531821686E-13 8.11696538644677E-10 -6.70479954384221E-10 8.735163763590556E-10 2.517749100993828E-11
i -9.382954417407776E-15 2.758288053043454E-14 -2.695453127200751E-12 -2.621456095210597E-11 2.517749100993828E-11 2.881940968785965E-11

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 15.8   n/a MPO494363  
diameter diameter 3.944 km 0.040 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.072   0.011 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

249991 (2001 XX65)          Discovered 2001-Dec-10 by LINEAR at Socorro
Reference: 20100923/Numbers.arcLast Updated: 2010-09-27
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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