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15805 Murakamitakehiko (1994 GB1)
Classification: Main-belt Asteroid          SPK-ID: 2015805
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 37 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1967725133076921 2.9269e-08  
a 2.271483931276054 6.5131e-09 au
q 1.824518329180828 6.6229e-08 au
i 5.509129444097913 4.0753e-06 deg
node 40.1472325770379 3.2829e-05 deg
peri 238.8004723706425 3.4353e-05 deg
M 174.7522533269694 1.0927e-05 deg
tp 2458393.507655230957
(2018-Oct-02.00765523)
3.7288e-05 TDB
period 1250.44020867645
3.42
5.3782e-06
1.472e-08
d
yr
n .2878986116265793 1.2383e-09 deg/d
Q 2.71844953337128 7.7947e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2368  
   data-arc span      10671 days (29.22 yr)  
   first obs. used      1991-08-06  
   last obs. used      2020-10-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .45659  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 02:31:15  

Additional Information
 Earth MOID = .815668 au 
 Jupiter MOID = 2.42549 au 
 T_jup = 3.580 
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Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.6   n/a MPO302163  
diameter diameter 4.951 km 0.274 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.315   0.081 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

15805 Murakamitakehiko           Discovered 1994 Apr. 8 by K. Endate and K. Watanabe at Kitami.
Takehiko Murakami (b. 1956) is a well-known amateur astronomer in Kanagawa Prefecture. He supports the organization of star parties for local children and citizens. He enjoys observing and photographing nebulae and star clusters.
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 2015-09-28Last Updated: 2015-10-05

Alternate Designations
 1994 GB1 = 1998 MH48 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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