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243078 (2007 HC87)
Classification: Main-belt Asteroid          SPK-ID: 2243078
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2499246993312113 4.456e-08  
a 2.374315568398818 2.2536e-08 au
q 1.780915463849329 1.0339e-07 au
i 9.089085433667799 6.0359e-06 deg
node 78.20641554584925 3.245e-05 deg
peri 260.5721231365845 3.5464e-05 deg
M 22.03188901889891 1.5637e-05 deg
tp 2458518.718452977625
(2019-Feb-04.21845298)
5.7413e-05 TDB
period 1336.306519282131
3.66
1.9025e-05
5.209e-08
d
yr
n .2693992694081844 3.8355e-09 deg/d
Q 2.967715672948306 2.8168e-08 au
  Orbit Determination Parameters
   # obs. used (total)      326  
   data-arc span      6088 days (16.67 yr)  
   first obs. used      2003-04-07  
   last obs. used      2019-12-07  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .63764  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Dec-14 16:28:11  

Additional Information
 Earth MOID = .798476 au 
 Jupiter MOID = 2.47967 au 
 T_jup = 3.483 
[ 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 16.5   n/a MPO440237  
diameter diameter 2.918 km 0.220 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.043   0.007 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

243078 (2007 HC87)          Discovered 2007-Apr-24 by Spacewatch at Kitt Peak
Reference: 20100626/Numbers.arcLast Updated: 2010-06-28
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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