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18609 Shinobuyama (1998 BN48)
Classification: Main-belt Asteroid          SPK-ID: 2018609
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 33 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .140019497930594 1.7865e-08  
a 2.289144028202197 7.3519e-09 au
q 1.968619230682508 4.2128e-08 au
i 5.711310456476559 7.5759e-07 deg
node 133.1283334556047 6.9736e-06 deg
peri 238.7215789039039 9.4913e-06 deg
M 325.1750988440074 7.4399e-06 deg
tp 2459322.875786557362
(2021-Apr-18.37578656)
2.6414e-05 TDB
period 1265.051204691486
3.46
6.0944e-06
1.669e-08
d
yr
n .2845734612677554 1.3709e-09 deg/d
Q 2.609668825721886 8.3814e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2263  
   data-arc span      12461 days (34.12 yr)  
   first obs. used      1986-11-03  
   last obs. used      2020-12-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .43832  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 02:33:17  

Additional Information
 Earth MOID = .973553 au 
 Jupiter MOID = 2.8621 au 
 T_jup = 3.580 
[ 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 13.91   n/a E2021B10  
diameter diameter 4.824 km 0.047 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.291   0.032 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

18609 Shinobuyama           Discovered 1998 Jan. 30 by T. Seki at Geisei.
Shinobuyama, called "Fuku-Shima" many centuries ago, is a small mountain in Fukushima city, Japan. This beloved mountain is the symbol of the city.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: MPC batch dated 2017-10-05Last Updated: 2017-10-09

Alternate Designations
 1998 BN48 = 1986 VX1 = 1988 ER = 1995 FM7 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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