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7308 Hattori (1995 BQ4)
Classification: Main-belt Asteroid          SPK-ID: 2007308
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 7 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04290224009959354 6.0452e-08  
a 3.065402891029487 3.5655e-08 AU
q 2.933890240196552 1.8313e-07 AU
i 8.123574019959307 6.5557e-06 deg
node 281.0101228527714 5.7832e-05 deg
peri 335.2980492585948 0.00011469 deg
M 125.5054808192019 0.00010013 deg
tp 2456317.076415498791
(2013-Jan-24.57641550)
0.0005456 JED
period 1960.332638977413
5.37
3.4202e-05
9.364e-08
d
yr
n .1836423027613264 3.204e-09 deg/d
Q 3.196915541862423 3.7184e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1026  
   data-arc span      11672 days (31.96 yr)  
   first obs. used      1982-10-21  
   last obs. used      2014-10-05  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .48211  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Oct-09 14:09:34  

Additional Information
 Earth MOID = 1.92212 AU 
 T_jup = 3.216 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 12.5 mag n/a MPO265997  

7308 Hattori (1995 BQ4)          Discovered 1995-Jan-31 by Shimizu, Y., Urata, T. at Nachi-Katsuura
Reference: DISCOVERY.DBLast Updated: 2003-08-29

[ show close-approach data ]
Alternate Designations
 1995 BQ4 = 1982 UM8 = 1987 SG30 = 1992 QY1 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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