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29199 Himeji (1991 FZ)
Classification: Main-belt Asteroid          SPK-ID: 2029199
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 35 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05186524114276374 4.0228e-08  
a 2.548765281368957 1.0789e-08 au
q 2.416572955434452 1.0499e-07 au
i 13.66974418444601 4.2638e-06 deg
node 4.673193868014365 1.4196e-05 deg
peri 348.5338180393659 3.7805e-05 deg
M 235.8643913413793 3.5789e-05 deg
tp 2459512.991973602942
(2021-Oct-25.49197360)
0.00014909 TDB
period 1486.254528339532
4.07
9.4372e-06
2.584e-08
d
yr
n .2422196152379082 1.538e-09 deg/d
Q 2.680957607303462 1.1349e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2210  
   data-arc span      24697 days (67.62 yr)  
   first obs. used      1952-09-15  
   last obs. used      2020-04-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .42518  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 06:36:26  

Additional Information
 Earth MOID = 1.4137 au 
 Jupiter MOID = 2.53804 au 
 T_jup = 3.400 
[ 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 13.2   n/a MPO474144  
diameter diameter 12.948 km 3.538 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2017AJ....154..168M)  
geometric albedo albedo 0.061   0.036 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2017AJ....154..168M)  

29199 Himeji           Discovered 1991 Mar. 17 by T. Seki at Geisei.
Himeji is a popular tourist city in the southwestern part of Hyogo prefecture. Himeji Castle is the symbol of the city and both Japan's national treasure and a World Heritage site. It was also the hometown of Hideo Hirose, former director of Tokyo Astronomical Observatory.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20100527/MPCPages.arcLast Updated: 2010-12-06

Alternate Designations
 1991 FZ = 1952 RU = 1998 WX23 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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