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243452 (2009 HD73)
Classification: Main-belt Asteroid          SPK-ID: 2243452
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 11 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05465400719626171 7.9859e-08  
a 3.053673758764138 3.4346e-08 au
q 2.886778251177607 2.5328e-07 au
i 8.111404053534475 8.9815e-06 deg
node 164.7094913709595 5.6497e-05 deg
peri 171.7795463518006 9.7635e-05 deg
M 269.6054144626951 7.7758e-05 deg
tp 2459489.909392145721
(2021-Oct-02.40939215)
0.0004211 TDB
period 1949.092195347796
5.34
3.2884e-05
9.003e-08
d
yr
n .1847013706479706 3.1161e-09 deg/d
Q 3.220569266350669 3.6223e-08 au
  Orbit Determination Parameters
   # obs. used (total)      191  
   data-arc span      8070 days (22.09 yr)  
   first obs. used      1998-03-25  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .64492  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-21 12:48:44  

Additional Information
 Earth MOID = 1.87766 au 
 Jupiter MOID = 2.03813 au 
 T_jup = 3.219 
[ show covariance matrix ]

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 MPO433595  
diameter diameter 6.027 km 0.267 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.019   0.004 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

243452 (2009 HD73)          Discovered 2009-Apr-19 by Spacewatch at Kitt Peak
Reference: 20100626/Numbers.arcLast Updated: 2010-06-28

Alternate Designations
 2009 HD73 = 2004 HS74 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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