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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 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 42 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1967108814755194 2.7138e-08  
a 2.271528963723682 6.1905e-09 au
q 1.824694498972423 6.202e-08 au
i 5.508887767006969 3.6055e-06 deg
node 40.13849638635671 3.2663e-05 deg
peri 238.8381689796587 3.4036e-05 deg
M 232.2867803437858 1.0914e-05 deg
tp 2459644.118039172996
(2022-Mar-05.61803917)
3.8614e-05 TDB
period 1250.477394056582
3.42
5.1118e-06
1.4e-08
d
yr
n .2878900504007917 1.1769e-09 deg/d
Q 2.718363428474941 7.4082e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2610  
   data-arc span      10814 days (29.61 yr)  
   first obs. used      1991-08-06  
   last obs. used      2021-03-15  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .44257  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 01:09:39  

Additional Information
 Earth MOID = .814014 au 
 Jupiter MOID = 2.4248 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 13.65   n/a E2021B10  
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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