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46025 (2001 DQ18)
Classification: Main-belt Asteroid          SPK-ID: 2046025
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06784675509851351 5.0139e-08  
a 2.589389421388127 1.5199e-08 au
q 2.413707751460525 1.2436e-07 au
i 10.39940299784134 4.041e-06 deg
node 109.777412720999 2.5974e-05 deg
peri 108.6438556720558 4.1858e-05 deg
M 173.8858387680663 3.2726e-05 deg
tp 2458265.383459339116
(2018-May-26.88345934)
0.00013714 TDB
period 1521.929310131487
4.17
1.34e-05
3.669e-08
d
yr
n .2365418666974078 2.0827e-09 deg/d
Q 2.765071091315729 1.6231e-08 au
  Orbit Determination Parameters
   # obs. used (total)      837  
   data-arc span      10077 days (27.59 yr)  
   first obs. used      1993-03-22  
   last obs. used      2020-10-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55666  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 23:49:14  

Additional Information
 Earth MOID = 1.42758 au 
 Jupiter MOID = 2.27693 au 
 T_jup = 3.394 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457142.5 (2015-Apr-30.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .06723653034310481 5.0055e-08  
q 2.416158775469364 1.2404e-07 au
tp 2456746.287617408850
(2014-Mar-29.78761741)
0.00013766 TDB
node 109.8328435932748 2.5996e-05 deg
peri 109.4627018498482 4.2226e-05 deg
i 10.39397544397849 4.0389e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      837  
   data-arc span      10077 days (27.59 yr)  
   first obs. used      1993-03-22  
   last obs. used      2020-10-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .55666  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-12 23:49:14  

Additional Information
 Jupiter MOID = 2.27693 au 
 T_jup = 3.394 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.505549520631172E-15 -6.175692478763259E-15 -1.468242699593331E-12 -4.1334635817067E-14 -3.808718434054887E-13 -3.85049209981723E-15
q -6.175692478763259E-15 1.538645051601093E-14 3.883673080368185E-12 1.039946480638916E-13 1.006915775572034E-12 9.896794766021199E-15
tp -1.468242699593331E-12 3.883673080368185E-12 1.894981869829088E-8 4.701162191787453E-11 4.608268564814314E-9 -7.46782047252724E-12
node -4.1334635817067E-14 1.039946480638916E-13 4.701162191787453E-11 6.758142042533622E-10 -6.517235413409662E-10 7.978545412917771E-12
peri -3.808718434054887E-13 1.006915775572034E-12 4.608268564814314E-9 -6.517235413409662E-10 1.783011170307683E-9 -9.588418088335264E-12
i -3.85049209981723E-15 9.896794766021199E-15 -7.46782047252724E-12 7.978545412917771E-12 -9.588418088335264E-12 1.6312600480841E-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 14.9   n/a MPO502463  
diameter diameter 2.493 km 0.683 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.375   0.182 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

46025 (2001 DQ18)          Discovered 2001-Feb-16 by LINEAR at Socorro
Reference: 20020822/Numbers.arcLast Updated: 2004-04-19

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