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22470 Shirakawa-go (1997 CR21)
Classification: Main-belt Asteroid          SPK-ID: 2022470
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 27 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1344525336343181 3.5124e-08  
a 2.422730707087588 7.0163e-09 au
q 2.096988425205998 8.3763e-08 au
i 2.022659025391561 3.0594e-06 deg
node 119.6550976586412 0.0001083 deg
peri 55.23165036657999 0.00010897 deg
M 89.61313809258252 1.145e-05 deg
tp 2458857.633284061625
(2020-Jan-09.13328406)
4.3641e-05 TDB
period 1377.387516664051
3.77
5.9834e-06
1.638e-08
d
yr
n .2613643550886088 1.1354e-09 deg/d
Q 2.748472988969177 7.9597e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1388  
   data-arc span      10088 days (27.62 yr)  
   first obs. used      1993-01-22  
   last obs. used      2020-09-05  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .53962  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 04:06:42  

Additional Information
 Earth MOID = 1.10207 au 
 Jupiter MOID = 2.2126 au 
 T_jup = 3.499 
[ 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 15.43   n/a E2021B10  

22470 Shirakawa-go           Discovered 1997 Feb. 9 by N. Sato at Chichibu.
Shirakawa=go is the village located on the border of Gifu Prefecture and Toyama Prefecture, Japan. It is famous for its big houses with thatched rafter roofs and was registered as a World Culture Heritage site in 1995.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20110715/MPCPages.arcLast Updated: 2011-07-20

[ show close-approach data ]
Alternate Designations
 1997 CR21 = 1995 US25 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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