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JPL Small-Body Database Browser
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15202 Yamada-Houkoku (1977 EM5)
Classification: Main-belt Asteroid          SPK-ID: 2015202
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2093632315502363 4.4983e-08  
a 2.393253897119912 8.2785e-09 au
q 1.892194527298691 1.0588e-07 au
i 9.571712784898777 4.6514e-06 deg
node 177.6949538108308 2.5827e-05 deg
peri 224.1618862877064 2.7307e-05 deg
M 250.4165833248496 9.5375e-06 deg
tp 2459012.146024318925
(2020-Jun-11.64602432)
3.6679e-05 TDB
period 1352.326595128128
3.70
7.0167e-06
1.921e-08
d
yr
n .266207882989901 1.3813e-09 deg/d
Q 2.894313266941134 1.0012e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1315  
   data-arc span      15537 days (42.54 yr)  
   first obs. used      1977-03-12  
   last obs. used      2019-09-25  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53268  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Nov-07 03:54:45  

Additional Information
 Earth MOID = .911423 au 
 Jupiter MOID = 2.55697 au 
 T_jup = 3.482 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.3   n/a MPO492921  
diameter diameter 8.093 km 0.109 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.056   0.013 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

15202 Yamada-Houkoku           Discovered 1977 Mar. 12 by H. Kosai and K. Hurukawa at the Kiso Station of the Tokyo Astronomical Observatory.
Yamada-Houkoku (1805-1877) was a Confucian and Japanese scholar of the late Edo period, born in Okayama prefecture.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20060809/MPCPages.arcLast Updated: 2007-08-08

[ show close-approach data ]
Alternate Designations
 1977 EM5 = 1986 RK3 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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