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11878 Hanamiyama (1990 HJ)
Classification: Main-belt Asteroid          SPK-ID: 2011878
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1440881377363458 3.6127e-08  
a 2.393967668327209 8.2391e-09 au
q 2.049025325196919 8.6226e-08 au
i 3.904226354845298 4.1689e-06 deg
node 50.1473809000465 5.459e-05 deg
peri 112.4049044380511 5.6317e-05 deg
M 76.78291798447624 1.4009e-05 deg
tp 2458711.938783728939
(2019-Aug-16.43878373)
5.2196e-05 TDB
period 1352.931623132435
3.70
6.9844e-06
1.912e-08
d
yr
n .2660888354183739 1.3737e-09 deg/d
Q 2.738910011457498 9.4263e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1905  
   data-arc span      18967 days (51.93 yr)  
   first obs. used      1968-05-22  
   last obs. used      2020-04-26  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49803  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 03:37:51  

Additional Information
 Earth MOID = 1.06061 au 
 Jupiter MOID = 2.24032 au 
 T_jup = 3.513 
[ 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 14.3   n/a MPO431637  
diameter diameter 3.460 km 0.818 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.371   0.145 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

11878 Hanamiyama           Discovered 1990 Apr. 18 by T. Seki at Geisei.
Hanamiyama Mountain in Fukushima city is famous for the production of flowering plants. In spring the mountain is completely covered with colorful flowers of cherry trees, peaches and golden bells attracting large numbers of tourists. The name was suggested by H. Ohno.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20070601/MPCPages.arcLast Updated: 2007-06-06

Alternate Designations
 1990 HJ = 1953 GO1 = 1968 KH = 1997 AU1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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