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16624 Hoshizawa (1993 HX)
Classification: Main-belt Asteroid          SPK-ID: 2016624
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 37 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .0444770061630772 2.091e-08  
a 2.407988793786002 6.9055e-09 au
q 2.300888661364161 4.9532e-08 au
i 3.055528489474102 1.4228e-06 deg
node 133.6266240812155 1.6659e-05 deg
peri 143.7673543707697 2.4395e-05 deg
M 132.0337871565041 1.7894e-05 deg
tp 2458895.932442698732
(2020-Feb-16.43244270)
6.781e-05 TDB
period 1364.83489953109
3.74
5.871e-06
1.607e-08
d
yr
n .2637681672147184 1.1346e-09 deg/d
Q 2.515088926207843 7.2127e-09 au
  Orbit Determination Parameters
   # obs. used (total)      2437  
   data-arc span      11634 days (31.85 yr)  
   first obs. used      1989-04-07  
   last obs. used      2021-02-12  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .48903  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 17:41:08  

Additional Information
 Earth MOID = 1.28509 au 
 Jupiter MOID = 2.51716 au 
 T_jup = 3.518 
[ hide covariance matrix ]
Orbital Elements at Epoch 2457270.5 (2015-Sep-05.0) TDB
Reference: JPL 37 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04386393536388591 2.1119e-08  
q 2.302736793481271 5.0076e-08 au
tp 2457534.874424553112
(2016-May-26.37442455)
6.7239e-05 TDB
node 133.6577233138748 1.6674e-05 deg
peri 144.9403391406987 2.4217e-05 deg
i 3.053848341888024 1.4221e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      2437  
   data-arc span      11634 days (31.85 yr)  
   first obs. used      1989-04-07  
   last obs. used      2021-02-12  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .48903  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-08 17:41:08  

Additional Information
 Jupiter MOID = 2.51716 au 
 T_jup = 3.518 
Orbit Covariance (6×6)
  e q tp node peri i
e 4.46032146103251E-16 -1.048567114904325E-15 9.875867574810018E-13 1.710357221059989E-14 2.626016757118894E-13 -1.020506123314747E-14
q -1.048567114904325E-15 2.507625625584328E-15 -2.423044220088258E-12 -4.071994247665205E-14 -6.455540207410746E-13 2.425196774881604E-14
tp 9.875867574810018E-13 -2.423044220088258E-12 4.52108729187248E-9 5.962711546413235E-11 1.182881059281902E-9 -2.897256852729003E-11
node 1.710357221059989E-14 -4.071994247665205E-14 5.962711546413235E-11 2.780196260498683E-10 -2.60952761151034E-10 -3.533828050396607E-12
peri 2.626016757118894E-13 -6.455540207410746E-13 1.182881059281902E-9 -2.60952761151034E-10 5.864681445135333E-10 -4.290867993175252E-12
i -1.020506123314747E-14 2.425196774881604E-14 -2.897256852729003E-11 -3.533828050396607E-12 -4.290867993175252E-12 2.022403038613641E-12

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.20   n/a MPCxxxxx  
rotation period rot_per 2.762 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]

16624 Hoshizawa           Discovered 1993 Apr. 16 by K. Endate and K. Watanabe at Kitami.
Sachiko Hoshizawa (b. 1951) appears daily on a Japanese television program about cooking and has introduced more than 3800 dishes using the produce of Hokkaido. A great space enthusiast, she developed and in 2000 presented to the astronaut Kouichi Wakata a special soybean soup for space.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20070601/MPCPages.arcLast Updated: 2007-06-06

Alternate Designations
 1993 HX = 1998 SD66 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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