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46689 Hakuryuko (1997 AL19)
Classification: Main-belt Asteroid          SPK-ID: 2046689
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .07293176191476465 2.8865e-08  
a 2.298415224008459 6.9965e-09 au
q 2.130787752109804 6.7774e-08 au
i 6.178107659761467 2.8901e-06 deg
node 131.4220475967635 3.6228e-05 deg
peri 39.01025722945376 4.5784e-05 deg
M 318.4216133210004 2.8753e-05 deg
tp 2459543.496263114105
(2021-Nov-24.99626311)
0.0001019 TDB
period 1272.744301736117
3.48
5.8115e-06
1.591e-08
d
yr
n .282853358297447 1.2915e-09 deg/d
Q 2.466042695907115 7.5068e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1653  
   data-arc span      8826 days (24.16 yr)  
   first obs. used      1997-01-12  
   last obs. used      2021-03-13  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .51586  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Aug-25 16:53:16  

Additional Information
 Earth MOID = 1.14219 au 
 Jupiter MOID = 2.50353 au 
 T_jup = 3.582 
[ 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 15.06   n/a MPCxxxxx  

46689 Hakuryuko           Discovered 1997 Jan. 13 by T. Okuni at Nanyo.
Hakuryuko is the name of the marsh located in the northeastern part of Akayu hot spring, Nanyo city, Yamagata. The natural marsh became part of the prefectural nature park in 1961.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20121029/MPCPages.arcLast Updated: 2013-03-29

Alternate Designations
 1997 AL19 = 1999 TF246 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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