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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 ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1403711155212172 4.2638e-08  
a 2.289227001606127 7.5095e-09 au
q 1.967885653709384 9.8423e-08 au
i 5.71004668479773 3.9594e-06 deg
node 133.1335150050899 3.992e-05 deg
peri 238.7754190634133 4.1384e-05 deg
M 268.2444285253085 1.1336e-05 deg
tp 2459322.949464666453
(2021-Apr-18.44946467)
4.0118e-05 TDB
period 1265.119985786816
3.46
6.2251e-06
1.704e-08
d
yr
n .2845579897910673 1.4002e-09 deg/d
Q 2.61056834950287 8.5637e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2138  
   data-arc span      12278 days (33.62 yr)  
   first obs. used      1986-11-03  
   last obs. used      2020-06-15  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .44199  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 18:24:03  

Additional Information
 Earth MOID = .974359 au 
 Jupiter MOID = 2.8603 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 13.9   n/a MPO365475  
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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