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227973 (2007 HJ48)
Classification: Main-belt Asteroid          SPK-ID: 2227973
[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .02302894751872098 4.94e-08  
a 3.063345226222384 3.0923e-08 au
q 2.992799609775985 1.5065e-07 au
i 9.231140068319771 5.5354e-06 deg
node 199.3681977654546 2.6848e-05 deg
peri 177.1150402362563 0.0001044 deg
M 40.83885749478578 9.9364e-05 deg
tp 2458978.341249560569
(2020-May-08.84124956)		 0.00054144 TDB
period 1958.35914774076
5.36		 2.9653e-05
8.119e-08		 d
yr
n .1838273640538867 2.7834e-09 deg/d
Q 3.133890842668785 3.1635e-08 au
   Orbit Determination Parameters
   # obs. used (total)      481  
   data-arc span      6380 days (17.47 yr)  
   first obs. used      2003-08-21  
   last obs. used      2021-02-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .52124  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 00:41:52  

Additional Information
 Earth MOID = 1.99224 au 
 Jupiter MOID = 1.96404 au 
 T_jup = 3.213 
[ 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 15.2   n/a MPO450054  
diameter diameter 3.810 km 1.305 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.092   0.051 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

227973 (2007 HJ48)          Discovered 2007-Apr-20 by Spacewatch at Kitt Peak
Reference: 20091202/Numbers.arcLast Updated: 2009-12-04

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