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JPL Small-Body Database Browser
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11925 Usubae (1992 YA1)
Classification: Main-belt Asteroid          SPK-ID: 2011925
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1942053684352509 3.2749e-08  
a 2.370546952587463 9.0073e-09 au
q 1.910174008267153 7.7743e-08 au
i 2.197420100092665 5.1251e-06 deg
node 172.071562719538 9.8595e-05 deg
peri 245.2353001783329 9.9529e-05 deg
M 92.93095681218799 1.4728e-05 deg
tp 2458256.364736318119
(2018-May-17.86473632)
5.3666e-05 TDB
period 1333.12621730404
3.65
7.5982e-06
2.08e-08
d
yr
n .2700419475119336 1.5391e-09 deg/d
Q 2.830919896907772 1.0757e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1075  
   data-arc span      9625 days (26.35 yr)  
   first obs. used      1992-12-21  
   last obs. used      2019-04-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53341  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-Jul-12 19:14:48  

Additional Information
 Earth MOID = .923031 au 
 Jupiter MOID = 2.51475 au 
 T_jup = 3.518 
[ 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 15.2   n/a MPO266022  
diameter diameter 2.062 km 0.187 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.379   0.241 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

11925 Usubae           Discovered 1992 Dec. 23 by T. Seki at Geisei.
Usubae at Cape Ashizuri in western Kochi prefecture is a beautiful beach featuring many strange rock formations. It is a famous spot for fishing and well-known as the first place in the Japanese archipelago that the Kuroshio ocean current reaches.
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 2016-11-14Last Updated: 2016-11-20

Alternate Designations
 1992 YA1 = 1997 BQ2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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