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JPL Small-Body Database Browser
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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 2459000.5 (2020-May-31.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04481009435675878 3.1343e-08  
a 2.409184068200664 8.7588e-09 au
q 2.301228302781792 7.7311e-08 au
i 3.055045504261575 3.5519e-06 deg
node 133.6241546546105 6.7349e-05 deg
peri 144.3496458436859 8.2208e-05 deg
M 27.01425642097417 4.8397e-05 deg
tp 2458898.007067832950
(2020-Feb-18.50706783)
0.00018349 TDB
period 1365.851238144407
3.74
7.4485e-06
2.039e-08
d
yr
n .2635718956400274 1.4374e-09 deg/d
Q 2.517139833619536 9.1513e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1873  
   data-arc span      11343 days (31.06 yr)  
   first obs. used      1989-04-07  
   last obs. used      2020-04-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52184  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 04:25:31  

Additional Information
 Earth MOID = 1.28561 au 
 Jupiter MOID = 2.51886 au 
 T_jup = 3.517 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456567.5 (2013-Oct-02.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04471274398621639 3.1523e-08  
q 2.300347757183886 7.7594e-08 au
tp 2456164.141525521736
(2012-Aug-24.64152552)
0.0001802 TDB
node 133.6683221593493 6.7452e-05 deg
peri 143.558923876905 8.2212e-05 deg
i 3.052533180794063 3.5496e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1873  
   data-arc span      11343 days (31.06 yr)  
   first obs. used      1989-04-07  
   last obs. used      2020-04-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .52184  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 04:25:31  

Additional Information
 Jupiter MOID = 2.51886 au 
 T_jup = 3.517 
Orbit Covariance (6×6)
  e q tp node peri i
e 9.937255864639894E-16 -2.432619228371297E-15 -4.343176125289153E-13 5.041813214695656E-16 -8.777646836308131E-14 2.83181752897856E-16
q -2.432619228371297E-15 6.020865395285666E-15 1.263798979792308E-12 -1.699278834167868E-15 2.714123594924751E-13 -5.951402846416591E-16
tp -4.343176125289153E-13 1.263798979792308E-12 3.247113460579914E-8 -5.992226490711566E-11 8.481184713172553E-9 1.654507583665017E-12
node 5.041813214695656E-16 -1.699278834167868E-15 -5.992226490711566E-11 4.549834415128097E-9 -4.558513623414125E-9 2.922783287221814E-11
peri -8.777646836308131E-14 2.714123594924751E-13 8.481184713172553E-9 -4.558513623414125E-9 6.758826929224441E-9 -2.875178076063483E-11
i 2.83181752897856E-16 -5.951402846416591E-16 1.654507583665017E-12 2.922783287221814E-11 -2.875178076063483E-11 1.259960930619959E-11

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.1   n/a MPO337399  
rotation period rot_per 2.762 h n/a LCDB (Rev. 2019-August); 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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