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6381 Toyama (1988 DO1)
Classification: Main-belt Asteroid          SPK-ID: 2006381
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 7 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1120073622864549 6.2018e-08  
a 2.258947104154802 1.2612e-08 AU
q 2.005928397473797 1.408e-07 AU
i 6.08069589457922 5.0713e-06 deg
node 120.3545358955539 6.6219e-05 deg
peri 119.0081714356448 7.0921e-05 deg
M 257.1945517605415 2.6883e-05 deg
tp 2457354.636873978157
(2015-Nov-28.13687398)
9.3341e-05 JED
period 1240.102317682459
3.40
1.0386e-05
2.844e-08
d
yr
n .2902986268687723 2.4312e-09 deg/d
Q 2.511965810835807 1.4025e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1089  
   data-arc span      21914 days (60.00 yr)  
   first obs. used      1954-02-10  
   last obs. used      2014-02-09  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .52369  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jun-09 18:21:57  

Additional Information
 Earth MOID = 1.00307 AU 
 T_jup = 3.606 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 13.3 mag n/a MPO279581  
rotation period rot_per 27. h n/a Asteroid Lightcurve DataBase (Rev. 2014-Mar-01) Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Pravec, P.; Wolf, M.; Sarounova, L. (2012) http://www.asu.cas.cz/~ppravec/neo.htm]

6381 Toyama           Discovered 1988 Feb. 21 by T. Fujii and K. Watanabe at Kitami.
Japanese amateur astronomer Miyuki Toyama (b. 1953) has been explaining the night sky in planetaria for many years. He is also famous as an illustrator of space.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20090209/MPCPages.arcLast Updated: 2009-02-11

Alternate Designations
 1988 DO1 = 1955 RK = 1988 FM2 = 1991 AD1 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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