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305751 (2009 DR7)
Classification: Main-belt Asteroid          SPK-ID: 2305751
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 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1365041025970457 6.9147e-08  
a 3.11457141033044 6.0248e-08 au
q 2.689419634988869 2.1358e-07 au
i 10.92854340593707 8.1993e-06 deg
node 351.3996728007508 4.0756e-05 deg
peri 268.7060305930301 5.0614e-05 deg
M 234.2194876929088 3.1445e-05 deg
tp 2459301.966159675668
(2021-Mar-28.46615968)
0.00018378 TDB
period 2007.686348634816
5.50
5.8255e-05
1.595e-07
d
yr
n .1793108770425183 5.2029e-09 deg/d
Q 3.539723185672012 6.8472e-08 au
  Orbit Determination Parameters
   # obs. used (total)      131  
   data-arc span      6716 days (18.39 yr)  
   first obs. used      2000-09-07  
   last obs. used      2019-01-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .59865  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-14 12:06:26  

Additional Information
 Earth MOID = 1.70308 au 
 Jupiter MOID = 1.70359 au 
 T_jup = 3.176 
[ 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 16.0   n/a MPO427633  
diameter diameter 4.440 km 0.287 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.030   0.005 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

305751 (2009 DR7)          Discovered 2009-Feb-19 by Spacewatch at Kitt Peak
Reference: 20111110/Numbers.arcLast Updated: 2011-11-14

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