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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 ]

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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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2501235135101922 4.4568e-08  
a 2.374685601212141 2.2613e-08 au
q 1.780720895154897 1.0345e-07 au
i 9.088513733566302 6.0352e-06 deg
node 78.20539792818634 3.2454e-05 deg
peri 260.5996601439249 3.546e-05 deg
M 129.7282272580291 1.6516e-05 deg
tp 2458518.841101699416
(2019-Feb-04.34110170)
5.7364e-05 TDB
period 1336.618922906604
3.66
1.9092e-05
5.227e-08
d
yr
n .2693363035869236 3.8471e-09 deg/d
Q 2.968650307269385 2.8269e-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 = .799143 au 
 Jupiter MOID = 2.48224 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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