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JPL Small-Body Database Browser
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13989 Murikabushi (1993 BG)
Classification: Main-belt Asteroid          SPK-ID: 2013989
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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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 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2883556391784424 3.6026e-08  
a 2.37798857370833 8.594e-09 au
q 1.692282158577632 8.6161e-08 au
i 14.59418943084969 4.4383e-06 deg
node 123.9813043280473 1.4156e-05 deg
peri 234.7522976216739 1.5866e-05 deg
M 249.4944769419357 9.5788e-06 deg
tp 2459411.644567179036
(2021-Jul-16.14456718)
3.6957e-05 TDB
period 1339.408566092041
3.67
7.2609e-06
1.988e-08
d
yr
n .2687753454126123 1.457e-09 deg/d
Q 3.063694988839028 1.1072e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1538  
   data-arc span      12969 days (35.51 yr)  
   first obs. used      1984-08-02  
   last obs. used      2020-02-04  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48882  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 20:48:53  

Additional Information
 Earth MOID = .729052 au 
 Jupiter MOID = 2.46984 au 
 T_jup = 3.441 
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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 14.3   n/a MPO435833  
diameter diameter 5.012 km 0.051 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
geometric albedo albedo 0.132   0.069 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2015ApJ...814..117N)  

13989 Murikabushi           Discovered 1993 Jan. 16 by T. Seki at Geisei.
Murikabushi ("a swarm of stars" in the Okinawa dialect) is the name of the 1.05-m infrared-optical telescope at the Ishigakijima Astronomical Observatory. The telescope was named following a popular suggestion from Okinawa citizens.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20061109/MPCPages.arcLast Updated: 2006-11-13

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Alternate Designations
 1993 BG = 1984 PE = 1997 AA15 = 2000 AP187 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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