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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.


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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1885082290454866 2.9779e-08  
a 2.388238550432353 8.4942e-09 au
q 1.93803593075219 6.9975e-08 au
i 1.64404563378192 3.4485e-06 deg
node 262.0176405075051 0.00014011 deg
peri 163.0211546008728 0.00014056 deg
M 203.4581700848886 1.2312e-05 deg
tp 2459586.696051622554
(2022-Jan-07.19605162)
4.7772e-05 TDB
period 1348.077882432803
3.69
7.1921e-06
1.969e-08
d
yr
n .2670468855629672 1.4247e-09 deg/d
Q 2.838441170112516 1.0095e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1735  
   data-arc span      24633 days (67.44 yr)  
   first obs. used      1951-12-01  
   last obs. used      2019-05-11  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46472  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 01:20:54  

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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