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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 2456800.5 (2014-May-23.0) TDB
Reference: JPL 5 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04283119717610825 6.6043e-08  
a 3.066033459322587 4.0085e-08 AU
q 2.934711575677796 2.0828e-07 AU
i 8.123567209383687 7.3238e-06 deg
node 281.0136348162264 5.7957e-05 deg
peri 335.5535138529664 0.00011968 deg
M 88.52382318021291 0.00010427 deg
tp 2456318.306420823348
(2013-Jan-25.80642082)
0.00056945 JED
period 1960.937545029077
5.37
3.8456e-05
1.053e-07
d
yr
n .1835856531548341 3.6003e-09 deg/d
Q 3.197355342967378 4.1802e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      995  
   data-arc span      11575 days (31.69 yr)  
   first obs. used      1982-10-21  
   last obs. used      2014-06-30  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .48093  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Jul-14 12:16:40  

Additional Information
 Earth MOID = 1.92111 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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