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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 ]

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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 25 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1877929265737817 2.9355e-08  
a 2.389177498757841 8.5252e-09 au
q 1.940506864161879 6.8953e-08 au
i 1.642394335754781 3.411e-06 deg
node 261.9932534303717 0.00013865 deg
peri 163.0401039702602 0.00013911 deg
M 256.7981867871439 1.2425e-05 deg
tp 2459587.183710861847
(2022-Jan-07.68371086)
4.7661e-05 TDB
period 1348.872966244782
3.69
7.2196e-06
1.977e-08
d
yr
n .2668894766289431 1.4285e-09 deg/d
Q 2.837848133353804 1.0126e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1803  
   data-arc span      25072 days (68.64 yr)  
   first obs. used      1951-12-01  
   last obs. used      2020-07-23  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .47131  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-12 18:58:09  

Additional Information
 Earth MOID = .953529 au 
 Jupiter MOID = 2.47039 au 
 T_jup = 3.508 
[ 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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