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17657 Himawari (1996 VO4)
Classification: Inner Main-belt Asteroid          SPK-ID: 2017657
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 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .08696544246006817 4.1578e-08  
a 1.92726735729762 7.5912e-09 au
q 1.759661698831386 8.0816e-08 au
i 23.07294430678506 5.3583e-06 deg
node 52.47116444200139 1.099e-05 deg
peri 289.1607827199629 4.1523e-05 deg
M 352.1199097392784 4.5526e-05 deg
tp 2459021.891442259927
(2020-Jun-21.39144226)
0.00012366 TDB
period 977.2628179094465
2.68
5.7739e-06
1.581e-08
d
yr
n .3683758282854855 2.1765e-09 deg/d
Q 2.094873015763854 8.2514e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1199  
   data-arc span      15690 days (42.96 yr)  
   first obs. used      1977-08-19  
   last obs. used      2020-08-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .48227  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Aug-25 01:14:34  

Additional Information
 Earth MOID = .838851 au 
 Jupiter MOID = 3.14561 au 
 T_jup = 3.815 
[ 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 15.1   n/a MPO474001  
diameter diameter 9.04 km 1.2 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 2
rotation period rot_per 5.507 h n/a LCDB (Rev. 2019-August); Warner et al., 2009 Published Reference List:
[Warner, B.D. (2013) Minor Planet Bull. 40, 71-80.]
geometric albedo albedo 0.0313   0.010 IRAS-A-FPA-3-RDR-IMPS-V6.0 IRAS observations used: 2

17657 Himawari           Discovered 1996 Nov. 6 by N. Sato at Chichibu.
Himawari, which means "sunflower", is the name of a series of Japanese weather satellites. Himawari-1 was launched in 1977, and the latest, Himawari-7, was launched in 2006.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20110517/MPCPages.arcLast Updated: 2011-06-24

Alternate Designations
 1996 VO4 = 1998 KJ2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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