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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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 44 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1966921389398196 2.6561e-08  
a 2.271237006804548 6.1221e-09 au
q 1.824502541896888 6.0863e-08 au
i 5.509180963198768 3.5253e-06 deg
node 40.1325700691977 3.234e-05 deg
peri 238.8843146216586 3.3711e-05 deg
M 288.6696327879915 1.0993e-05 deg
tp 2459644.221710227844
(2022-Mar-05.72171023)
3.8583e-05 TDB
period 1250.236318242455
3.42
5.055e-06
1.384e-08
d
yr
n .2879455625685849 1.1642e-09 deg/d
Q 2.717971471712208 7.3262e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2779  
   data-arc span      10921 days (29.90 yr)  
   first obs. used      1991-08-06  
   last obs. used      2021-06-30  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .44163  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 03:56:33  

Additional Information
 Earth MOID = .815486 au 
 Jupiter MOID = 2.42421 au 
 T_jup = 3.581 
[ 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 13.66   n/a MPCxxxxx  
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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