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72839 (2001 HS31)
Classification: Main-belt Asteroid          SPK-ID: 2072839
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 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1803087608844876 4.1769e-08  
a 2.707078008301313 1.569e-08 au
q 2.218968127006857 1.1478e-07 au
i 9.590637205312454 4.48e-06 deg
node 127.0283811939389 2.2236e-05 deg
peri 43.24355090783026 2.4994e-05 deg
M 193.0938485527822 1.4643e-05 deg
tp 2459954.757132091076
(2023-Jan-10.25713209)
7.0547e-05 TDB
period 1626.857759275916
4.45
1.4144e-05
3.872e-08
d
yr
n .221285479905895 1.9238e-09 deg/d
Q 3.195187889595769 1.8519e-08 au
  Orbit Determination Parameters
   # obs. used (total)      998  
   data-arc span      7666 days (20.99 yr)  
   first obs. used      1999-12-14  
   last obs. used      2020-12-09  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .50277  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 13:04:20  

Additional Information
 Earth MOID = 1.23674 au 
 Jupiter MOID = 1.81469 au 
 T_jup = 3.321 
[ 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 14.85   n/a E2021B10  
diameter diameter 6.553 km 0.074 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.033   0.007 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

72839 (2001 HS31)          Discovered 2001-Apr-26 by Yeung, W. K. Y. at Desert Beaver
Reference: 20031109/Numbers.arcLast Updated: 2004-04-19

[ show close-approach data ]
Alternate Designations
 2001 HS31 = 2000 AN105 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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