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180685 (2004 HC6)
Classification: Main-belt Asteroid          SPK-ID: 2180685
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 20 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1315528594252196 4.4628e-08  
a 2.694287925267446 1.6035e-08 au
q 2.339846644583671 1.2717e-07 au
i 12.87345068965216 3.8522e-06 deg
node 55.87184312949439 2.1065e-05 deg
peri 153.3136585400997 2.686e-05 deg
M 288.5694769923481 1.793e-05 deg
tp 2459521.013084193475
(2021-Nov-02.51308419)
8.1425e-05 TDB
period 1615.341809793141
4.42
1.4421e-05
3.948e-08
d
yr
n .2228630484380895 1.9896e-09 deg/d
Q 3.048729205951221 1.8145e-08 au
  Orbit Determination Parameters
   # obs. used (total)      579  
   data-arc span      7110 days (19.47 yr)  
   first obs. used      2001-09-18  
   last obs. used      2021-03-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .49393  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 21:27:31  

Additional Information
 Earth MOID = 1.33896 au 
 Jupiter MOID = 1.93729 au 
 T_jup = 3.322 
[ 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 15.6   n/a MPO454242  
diameter diameter 5.904 km 0.252 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.035   0.006 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

180685 (2004 HC6)          Discovered 2004-Apr-17 by LINEAR at Socorro
Reference: 20080321/Numbers.arcLast Updated: 2008-03-26

[ show close-approach data ]
Alternate Designations
 2004 HC6 = 2003 AR85 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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