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7139 Tsubokawa (1994 CV2)
Classification: Main-belt Asteroid          SPK-ID: 2007139
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 34 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .02583253717656154 3.5565e-08  
a 2.997553008021882 1.5466e-08 au
q 2.920118608503443 1.1046e-07 au
i 9.802366909774062 3.8462e-06 deg
node 175.9419763319181 2.0008e-05 deg
peri 356.76544211 7.082e-05 deg
M 347.9487172471766 6.7241e-05 deg
tp 2459063.956996127501
(2020-Aug-02.45699613)
0.00035405 TDB
period 1895.608880353262
5.19
1.467e-05
4.016e-08
d
yr
n .1899125941702231 1.4698e-09 deg/d
Q 3.074987407540321 1.5865e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2149  
   data-arc span      12334 days (33.77 yr)  
   first obs. used      1986-09-06  
   last obs. used      2020-06-13  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46054  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Jun-23 16:38:02  

Additional Information
 Earth MOID = 1.92448 au 
 Jupiter MOID = 1.88376 au 
 T_jup = 3.231 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 12.8   n/a MPO337315  
diameter diameter 8.768 km 0.090 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
rotation period rot_per 2.756 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.]
geometric albedo albedo 0.210   0.034 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

7139 Tsubokawa (1994 CV2)          Discovered 1994-Feb-14 by Niijima, T., Urata, T. at Ojima
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1994 CV2 = 1986 RN6 = 1991 PE17 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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