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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 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04290223260761154 5.8677e-08  
a 3.06540289590843 3.4187e-08 AU
q 2.93389026783212 1.7491e-07 AU
i 8.123575555793435 6.075e-06 deg
node 281.0101269033419 5.7397e-05 deg
peri 335.2980362919031 0.00011287 deg
M 125.5054881015784 9.8775e-05 deg
tp 2456317.076374211947
(2013-Jan-24.57637421)
0.00053767 JED
period 1960.332643657556
5.37
3.2794e-05
8.979e-08
d
yr
n .1836423023228945 3.0721e-09 deg/d
Q 3.19691552398474 3.5653e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1065  
   data-arc span      11761 days (32.20 yr)  
   first obs. used      1982-10-21  
   last obs. used      2015-01-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .47571  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Jan-08 00:20:49  

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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