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190057 Nakagawa (2004 RR252)
Classification: Main-belt Asteroid          SPK-ID: 2190057
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Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 17 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1187176790949742 5.5149e-08  
a 2.756402634403323 3.1492e-08 au
q 2.429168910995688 1.5347e-07 au
i 3.863673750760698 6.0646e-06 deg
node 277.3459496925574 9.0629e-05 deg
peri 10.11299565398704 9.5736e-05 deg
M 272.0201095372055 3.615e-05 deg
tp 2459609.001191411527
(2022-Jan-29.50119141)		 0.00017219 TDB
period 1671.523209844637
4.58		 2.8646e-05
7.843e-08		 d
yr
n .215372420723647 3.691e-09 deg/d
Q 3.083636357810958 3.5231e-08 au
   Orbit Determination Parameters
   # obs. used (total)      232  
   data-arc span      5642 days (15.45 yr)  
   first obs. used      2004-09-14  
   last obs. used      2020-02-25  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .55315  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 22:06:02  

Additional Information
 Earth MOID = 1.41096 au 
 Jupiter MOID = 2.06121 au 
 T_jup = 3.330 
[ 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 16.38   n/a E2021B55  

190057 Nakagawa           Discovered 2004 Sept. 14 by H. Hori and H. Maeno at Nakagawa.
Nakagawa is a river that flows for about 125 km in Tokushima prefecture. The river's source appears to be in the Turugi mountain range. The town bearing the name Nakagawa was eliminated following its amalgamation with Anan City in Mar. 2006.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20090607/MPCPages.arcLast Updated: 2009-06-08

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