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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 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1874075540402606 2.8968e-08  
a 2.38804806168355 8.4784e-09 au
q 1.940509815512851 6.8097e-08 au
i 1.641519570432477 3.3872e-06 deg
node 261.9376430053743 0.00013879 deg
peri 163.2195994122127 0.00013924 deg
M 308.9578448660444 1.2456e-05 deg
tp 2459587.612689345120
(2022-Jan-08.11268935)
4.7162e-05 TDB
period 1347.916599204759
3.69
7.1784e-06
1.965e-08
d
yr
n .267078838714793 1.4223e-09 deg/d
Q 2.83558630785425 1.0067e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1807  
   data-arc span      25400 days (69.54 yr)  
   first obs. used      1951-12-01  
   last obs. used      2021-06-16  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .47117  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-09 13:41:56  

Additional Information
 Earth MOID = .953856 au 
 Jupiter MOID = 2.47265 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 14.44   n/a MPCxxxxx  
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. 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:
[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.]
[Erasmus, N.; Navarro-Meza, S.; McNeill, A.; Trilling, D.E.; et al. (2020) Ap. J. Suppl. Ser. 247, A13.]
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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