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300955 (2008 DR1)
Classification: Main-belt Asteroid          SPK-ID: 2300955
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 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08296013927305873 5.4888e-08  
a 3.152361822961367 4.74e-08 au
q 2.890841447089418 1.6939e-07 au
i 8.736390359704682 6.8892e-06 deg
node 318.4830622273795 4.1088e-05 deg
peri 98.77079426215441 6.0477e-05 deg
M 141.1965347056311 4.3736e-05 deg
tp 2458198.685227637348
(2018-Mar-21.18522764)
0.00024591 TDB
period 2044.33712663235
5.60
4.6109e-05
1.262e-07
d
yr
n .176096200235345 3.9718e-09 deg/d
Q 3.413882198833316 5.1332e-08 au
  Orbit Determination Parameters
   # obs. used (total)      153  
   data-arc span      6700 days (18.34 yr)  
   first obs. used      2001-12-18  
   last obs. used      2020-04-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .66812  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-21 19:38:21  

Additional Information
 Earth MOID = 1.91995 au 
 Jupiter MOID = 1.86955 au 
 T_jup = 3.184 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457860.5 (2017-Apr-17.0) TDB
Reference: JPL 10 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0830833078064951 5.4734e-08  
q 2.892309008639592 1.6903e-07 au
tp 2458201.864592609061
(2018-Mar-24.36459261)
0.00024612 TDB
node 318.5009577493868 4.1094e-05 deg
peri 99.42444669197333 6.0484e-05 deg
i 8.734325702691775 6.8878e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      153  
   data-arc span      6700 days (18.34 yr)  
   first obs. used      2001-12-18  
   last obs. used      2020-04-22  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .66812  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-21 19:38:21  

Additional Information
 Jupiter MOID = 1.86955 au 
 T_jup = 3.184 
Orbit Covariance (6×6)
  e q tp node peri i
e 2.995823661621606E-15 -8.953699586929601E-15 -2.334074321107415E-12 -2.341695905877052E-15 -4.87961375507141E-13 -9.687726895755509E-16
q -8.953699586929601E-15 2.857048773541182E-14 8.373747252149123E-12 1.055043562542158E-14 1.644917289320588E-12 5.103680452369791E-15
tp -2.334074321107415E-12 8.373747252149123E-12 6.057325458850801E-8 -3.976872931904087E-11 1.096440149812869E-8 -2.490193954313502E-12
node -2.341695905877052E-15 1.055043562542158E-14 -3.976872931904087E-11 1.68870724140136E-9 -1.675950782415684E-9 5.608058438282601E-11
peri -4.87961375507141E-13 1.644917289320588E-12 1.096440149812869E-8 -1.675950782415684E-9 3.658371353327303E-9 -5.595828723157313E-11
i -9.687726895755509E-16 5.103680452369791E-15 -2.490193954313502E-12 5.608058438282601E-11 -5.595828723157313E-11 4.744236677481078E-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 15.9   n/a MPO433941  
diameter diameter 5.331 km 2.274 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.025   0.014 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

300955 (2008 DR1)          Discovered 2008-Feb-24 by Mt. Lemmon Survey at Mount Lemmon
Reference: 20111012/Numbers.arcLast Updated: 2011-10-13

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