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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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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 22 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0231704529329745 4.9429e-08  
a 3.064069196106507 3.0947e-08 au
q 2.993073325014745 1.5083e-07 au
i 9.230443547392882 5.535e-06 deg
node 199.3612512974766 2.6849e-05 deg
peri 177.5826109308452 0.00010371 deg
M 76.39851839063014 9.8493e-05 deg
tp 2458980.753391041654
(2020-May-11.25339104)
0.00053768 TDB
period 1959.053426399438
5.36
2.968e-05
8.126e-08
d
yr
n .1837622165627444 2.784e-09 deg/d
Q 3.13506506719827 3.1664e-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 = 1.99327 au 
 Jupiter MOID = 1.96277 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 15.37   n/a MPCxxxxx  
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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