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6660 Matsumoto (1993 BC)
Classification: Main-belt Asteroid          SPK-ID: 2006660
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 24 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1885082583222085 2.9435e-08  
a 2.388238553407016 8.3159e-09 au
q 1.938035863246308 6.926e-08 au
i 1.644042519406411 3.4229e-06 deg
node 262.0178110863829 0.00013854 deg
peri 163.0209875379239 0.00013899 deg
M 203.4581676703113 1.2225e-05 deg
tp 2459586.696061759529
(2022-Jan-07.19606176)
4.742e-05 TDB
period 1348.077884951444
3.69
7.041e-06
1.928e-08
d
yr
n .2670468850640381 1.3948e-09 deg/d
Q 2.838441243567723 9.8835e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1787  
   data-arc span      25072 days (68.64 yr)  
   first obs. used      1951-12-01  
   last obs. used      2020-07-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .4711  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Nov-13 03:34:04  

Additional Information
 Earth MOID = .951669 au 
 Jupiter MOID = 2.46955 au 
 T_jup = 3.509 
[ 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 14.4   n/a MPO337311  
diameter diameter 3.054 km 0.440 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  
rotation period rot_per 7.556 h n/a LCDB (Rev. 2019-August); 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:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]
[Chang, C.-K.; Lin, H.-W.; Ip, W.-H.; Prince, T.A.; et al. (2016) Astrophys. J. Sup. Ser. 227, A20.]
geometric albedo albedo 0.396   0.108 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2012ApJ...759L...8M)  

6660 Matsumoto (1993 BC)          Discovered 1993-Jan-16 by Seki, T. at Geisei
Reference: DISCOVERY.DBLast Updated: 2003-08-29

Alternate Designations
 1993 BC = 1984 ST1 = 1991 PK4 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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