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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 ]

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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 18 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1930339266823309 3.2289e-08  
a 2.372624713230499 8.8975e-09 au
q 1.914627648292076 7.6792e-08 au
i 2.197513653212458 4.4076e-06 deg
node 171.9992119112336 9.755e-05 deg
peri 245.2134445423314 9.8341e-05 deg
M 254.9762511834397 1.467e-05 deg
tp 2459589.927859011767
(2022-Jan-10.42785901)
5.5731e-05 TDB
period 1334.879308956169
3.65
7.5088e-06
2.056e-08
d
yr
n .2696873025034061 1.517e-09 deg/d
Q 2.830621778168921 1.0615e-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 = .927115 au 
 Jupiter MOID = 2.51622 au 
 T_jup = 3.517 
[ 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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