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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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1925531521604296 3.2275e-08  
a 2.372083339750476 9.1216e-09 au
q 1.915331215494283 7.6628e-08 au
i 2.199157279781531 4.4098e-06 deg
node 171.9653210517649 9.7429e-05 deg
peri 245.2907698828433 9.8226e-05 deg
M 307.7444256364798 1.4886e-05 deg
tp 2459590.197255231465
(2022-Jan-10.69725523)
5.5858e-05 TDB
period 1334.422456028097
3.65
7.6971e-06
2.107e-08
d
yr
n .2697796326596141 1.5561e-09 deg/d
Q 2.828835464006669 1.0878e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1141  
   data-arc span      10100 days (27.65 yr)  
   first obs. used      1992-12-21  
   last obs. used      2020-08-16  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .5212  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 23:01:58  

Additional Information
 Earth MOID = .928154 au 
 Jupiter MOID = 2.51851 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 15.28   n/a E2021B10  
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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