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15840 Hiroshiendou (1995 KH1)
Classification: Main-belt Asteroid          SPK-ID: 2015840
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 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1444893972145107 3.3366e-08  
a 2.787942885747408 1.2e-08 au
q 2.385114698717282 9.0829e-08 au
i 10.26311709358932 3.4824e-06 deg
node 124.1056888085465 1.7799e-05 deg
peri 187.1054791901301 2.118e-05 deg
M 84.22231104702337 1.0677e-05 deg
tp 2458602.714554224620
(2019-Apr-29.21455422)
5.0432e-05 TDB
period 1700.294835167644
4.66
1.0978e-05
3.006e-08
d
yr
n .2117279853787859 1.367e-09 deg/d
Q 3.190771072777535 1.3734e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2069  
   data-arc span      10367 days (28.38 yr)  
   first obs. used      1991-09-15  
   last obs. used      2020-02-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48924  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 21:29:00  

Additional Information
 Earth MOID = 1.371 au 
 Jupiter MOID = 2.07924 au 
 T_jup = 3.292 
[ 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 13.3   n/a MPO347649  
diameter diameter 5.883 km 0.235 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 6.449 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
geometric albedo albedo 0.294   0.025 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

15840 Hiroshiendou           Discovered 1995 May 31 by T. Okuni at Nanyo.
Hiroshi Endou (b. 1939) is a confectionery manufacturer and amateur astronomer, active in the Nanyo Astronomy Lovers Club since 1983.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20100923/MPCPages.arcLast Updated: 2010-12-06

[ show close-approach data ]
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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