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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 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04303948432345584 5.6146e-08  
a 3.065149173460235 3.1133e-08 au
q 2.93322673366004 1.6935e-07 au
i 8.123350061912628 5.8771e-06 deg
node 281.0039450789548 5.0001e-05 deg
peri 334.709639004142 0.00010065 deg
M 236.3445413084292 9.0512e-05 deg
tp 2458273.765936330064
(2018-Jun-04.26593633)
0.00049538 JED
period 1960.089264505272
5.37
2.9863e-05
8.176e-08
d
yr
n .183665104706782 2.7983e-09 deg/d
Q 3.19707161326043 3.2473e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1229  
   data-arc span      12218 days (33.45 yr)  
   first obs. used      1982-10-21  
   last obs. used      2016-04-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .4752  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Apr-25 12:58:48  

Additional Information
 Earth MOID = 1.91991 au 
 Jupiter MOID = 1.88277 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 12.6 mag n/a MPO332888  

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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