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11928 Akimotohiro (1993 BT2)
Classification: Main-belt Asteroid          SPK-ID: 2011928
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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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 .2071913373499439 4.0086e-08  
a 2.638097467051757 8.5194e-09 au
q 2.091506524793804 1.0437e-07 au
i 5.430362654979147 3.9278e-06 deg
node 328.6438464547689 4.0253e-05 deg
peri 195.6228797449971 4.1069e-05 deg
M 116.6331726038025 8.4914e-06 deg
tp 2458493.445932645208
(2019-Jan-09.94593265)
3.6238e-05 TDB
period 1565.07329923883
4.28
7.5813e-06
2.076e-08
d
yr
n .2300211754779058 1.1142e-09 deg/d
Q 3.18468840930971 1.0285e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2099  
   data-arc span      23827 days (65.23 yr)  
   first obs. used      1955-03-24  
   last obs. used      2020-06-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49292  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 17:21:36  

Additional Information
 Earth MOID = 1.09998 au 
 Jupiter MOID = 1.80485 au 
 T_jup = 3.359 
[ show covariance matrix ]

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 13.3   n/a MPO389703  
diameter diameter 8.040 km 0.161 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
geometric albedo albedo 0.177   0.040 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  

11928 Akimotohiro           Discovered 1993 Jan. 23 by K. Endate and K. Watanabe at Kitami.
Hiroyuki Akimoto (b. 1967) is editor-in-chief of the Japanese monthly astronomical magazine Gekkan Tenmon Guide. He has edited many books on astronomy.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20030910/MPCPages.arcLast Updated: 2003-10-02

[ show close-approach data ]
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