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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 ]

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For accurate long-term ephemerides, please instead use our Horizons system.This orbit viewer was implemented using two-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04481015150744494 3.2212e-08  
a 2.409184057347539 9.2476e-09 au
q 2.301228154728475 7.9159e-08 au
i 3.055045325563604 3.6976e-06 deg
node 133.6242281767478 6.821e-05 deg
peri 144.3495028542324 8.336e-05 deg
M 27.01432838067873 4.9368e-05 deg
tp 2458898.006795508166
(2020-Feb-18.50679551)
0.00018716 TDB
period 1365.85122891488
3.74
7.8642e-06
2.153e-08
d
yr
n .2635718974210736 1.5176e-09 deg/d
Q 2.517139959966603 9.662e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1800  
   data-arc span      10989 days (30.09 yr)  
   first obs. used      1989-04-07  
   last obs. used      2019-05-09  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50426  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 02:26:18  

Additional Information
 Earth MOID = 1.28561 au 
 Jupiter MOID = 2.51886 au 
 T_jup = 3.517 
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Orbital Elements at Epoch 2456499.5 (2013-Jul-26.0) TDB
Reference: JPL 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04474875467687314 3.2393e-08  
q 2.300211924102963 7.9477e-08 au
tp 2456164.087063942041
(2012-Aug-24.58706394)
0.00018327 TDB
node 133.6686910298455 6.8315e-05 deg
peri 143.5373615769298 8.3342e-05 deg
i 3.052538154526275 3.6954e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1800  
   data-arc span      10989 days (30.09 yr)  
   first obs. used      1989-04-07  
   last obs. used      2019-05-09  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .50426  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 02:26:18  

Additional Information
 Jupiter MOID = 2.51886 au 
 T_jup = 3.517 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.04932220239868E-15 -2.559334365926282E-15 -3.787027394549151E-13 1.867661079870093E-16 -7.409285938961196E-14 3.178015802512021E-16
q -2.559334365926282E-15 6.316587549202321E-15 1.171998386317077E-12 -9.865252378534307E-16 2.498078591534669E-13 -6.887503625961508E-16
tp -3.787027394549151E-13 1.171998386317077E-12 3.358962563806942E-8 -5.857006973138238E-11 8.76130623061996E-9 8.63395112137152E-13
node 1.867661079870093E-16 -9.865252378534307E-16 -5.857006973138238E-11 4.666901468808343E-9 -4.675039871410335E-9 2.486279146834768E-11
peri -7.409285938961196E-14 2.498078591534669E-13 8.76130623061996E-9 -4.675039871410335E-9 6.945853947213643E-9 -2.459512498636597E-11
i 3.178015802512021E-16 -6.887503625961508E-16 8.63395112137152E-13 2.486279146834768E-11 -2.459512498636597E-11 1.365587566188655E-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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