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227152 Shujinakamura (2005 PJ20)
Classification: Main-belt Asteroid          SPK-ID: 2227152
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.


Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .2030898277998218 4.5504e-08  
a 2.383759114130581 1.126e-08 au
q 1.899641886125546 1.0418e-07 au
i 3.825218534344389 4.7924e-06 deg
node 156.1737444184562 5.9655e-05 deg
peri 187.3294425882183 6.0946e-05 deg
M 45.7581494636073 1.0905e-05 deg
tp 2459029.633104612750
(2020-Jun-29.13310461)
4.0466e-05 TDB
period 1344.286931628038
3.68
9.5245e-06
2.608e-08
d
yr
n .2677999700287285 1.8974e-09 deg/d
Q 2.867876342135617 1.3546e-08 au
  Orbit Determination Parameters
   # obs. used (total)      255  
   data-arc span      9651 days (26.42 yr)  
   first obs. used      1994-08-10  
   last obs. used      2021-01-11  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .55049  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-14 00:38:38  

Additional Information
 Earth MOID = .890065 au 
 Jupiter MOID = 2.54068 au 
 T_jup = 3.505 
[ 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 17.66   n/a MPCxxxxx  

227152 Shujinakamura           Discovered 2005 Aug. 5 by V. S. Casulli at Vallemare Borbona.
Shuji Nakamura (b. 1954) is a Japanese physicist who received the 2014 Nobel Prize for Physics for his discovery of neutrino oscillations, showing that the neutrino has mass.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: MPC batch dated 2017-01-12Last Updated: 2017-01-17

Alternate Designations
 2005 PJ20 = 1994 PZ3 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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