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6925 Susumu (1993 UW2)
Classification: Main-belt Asteroid          SPK-ID: 2006925
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 39 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1016201133682972 1.4376e-08  
a 2.835357440010726 1.1656e-08 au
q 2.547228095517191 4.2202e-08 au
i 14.2040213289645 7.154e-07 deg
node 207.47460771419 3.2349e-06 deg
peri 85.40209267995438 1.2077e-05 deg
M 354.4406020550377 9.7691e-06 deg
tp 2459227.429941654421
(2021-Jan-12.92994165)
4.7322e-05 TDB
period 1743.854117220843
4.77
1.0754e-05
2.944e-08
d
yr
n .2064392866610466 1.273e-09 deg/d
Q 3.123486784504261 1.2841e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2737  
   data-arc span      20463 days (56.02 yr)  
   first obs. used      1964-10-09  
   last obs. used      2020-10-18  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .41101  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 19:14:09  

Additional Information
 Earth MOID = 1.57937 au 
 Jupiter MOID = 2.0762 au 
 T_jup = 3.259 
[ 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 12.36   n/a E2021B10  
diameter diameter 22.860 km 0.082 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  
rotation period rot_per 52.7947 h n/a LCDB (Rev. 2020-October); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Pal, A.; Szakats, R.; Kiss, C.; Bodi, A.; et al. (2019) Ap. J. Supl. Ser. 247, id.26.]
geometric albedo albedo 0.046   0.010 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2014ApJ...791..121M)  

6925 Susumu           Discovered 1993 Oct. 24 by T. Seki at Geisei.
Named in honor of Augustin Susumu Yamamoto (b. 1915), agronomist and director of the Yamamoto Observatory and, from 1988 to 1994, chairman of the board of directors of the Oriental Astronomical Association, which maintains its headquarters there. He published a Catalogue of Cometary Orbits in 1936. His father was the astronomer Issei Yamamoto. Name proposed by the discoverer following a suggestion by I. Hasegawa and T. Sato.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 19981005/MPCPages.arcLast Updated: 2009-11-17

Alternate Designations
 1993 UW2 = 1964 TF2 = 1972 HP1 = 1976 DL = 1987 MV 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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