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71725 (2000 HN9)
Classification: Main-belt Asteroid          SPK-ID: 2071725
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1376228700159969 4.4876e-08  
a 3.14760277120555 2.1066e-08 au
q 2.714420644161937 1.4046e-07 au
i 2.21654768600188 4.2965e-06 deg
node 84.40328327413884 0.0001284 deg
peri 65.8205928944795 0.00012935 deg
M 272.0126305882469 1.6382e-05 deg
tp 2459499.024077183735
(2021-Oct-11.52407718)
9.4861e-05 TDB
period 2039.70943768404
5.58
2.0477e-05
5.606e-08
d
yr
n .1764957269643058 1.7719e-09 deg/d
Q 3.580784898249163 2.3966e-08 au
  Orbit Determination Parameters
   # obs. used (total)      939  
   data-arc span      7626 days (20.88 yr)  
   first obs. used      1998-12-11  
   last obs. used      2019-10-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .56889  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 08:31:38  

Additional Information
 Earth MOID = 1.72649 au 
 Jupiter MOID = 1.42005 au 
 T_jup = 3.193 
[ 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 14.4   n/a MPO412623  
diameter diameter 6.806 km 0.083 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.066   0.013 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

71725 (2000 HN9)          Discovered 2000-Apr-27 by LINEAR at Socorro
Reference: 20031109/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 2000 HN9 = 1998 YO31 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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