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

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04110479265746038 3.5346e-08  
a 3.065264425230362 1.8982e-08 au
q 2.939267366590979 1.0434e-07 au
i 8.131911203567073 3.8646e-06 deg
node 280.8188018892671 4.0895e-05 deg
peri 332.1943445719746 8.4097e-05 deg
M 135.936880002997 7.3857e-05 deg
tp 2458260.323757616319
(2018-May-21.82375762)
0.00040224 TDB
period 1960.199816652041
5.37
1.8208e-05
4.985e-08
d
yr
n .1836547462874824 1.7059e-09 deg/d
Q 3.191261483869746 1.9762e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1878  
   data-arc span      13612 days (37.27 yr)  
   first obs. used      1982-10-21  
   last obs. used      2020-01-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5047  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 18:26:13  

Additional Information
 Earth MOID = 1.92676 au 
 Jupiter MOID = 1.88971 au 
 T_jup = 3.216 
[ hide covariance matrix ]
Orbital Elements at Epoch 2456757.5 (2014-Apr-10.0) TDB
Reference: JPL 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .04282383455395099 3.431e-08  
q 2.934820934105324 1.0153e-07 au
tp 2456318.501264687279
(2013-Jan-26.00126469)
0.0003943 TDB
node 281.0142709284498 4.0959e-05 deg
peri 335.5933857327444 8.272e-05 deg
i 8.123604367147038 3.8652e-06 deg
  Orbit Determination Parameters
   # obs. used (total)      1878  
   data-arc span      13612 days (37.27 yr)  
   first obs. used      1982-10-21  
   last obs. used      2020-01-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .5047  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 18:26:13  

Additional Information
 Jupiter MOID = 1.88971 au 
 T_jup = 3.216 
Orbit Covariance (6×6)
  e q tp node peri i
e 1.177182449528038E-15 -3.431103742041014E-15 -2.238959915517953E-12 -3.418685951303694E-15 -4.153016721300522E-13 -4.245158462176269E-17
q -3.431103742041014E-15 1.030834009993906E-14 6.07544737843109E-12 9.424544357242513E-15 1.137959240088051E-12 6.639462883989556E-16
tp -2.238959915517953E-12 6.07544737843109E-12 1.55474666989672E-7 2.017473896780524E-11 2.840117294910083E-8 -4.914830480941261E-12
node -3.418685951303694E-15 9.424544357242513E-15 2.017473896780524E-11 1.677668930329635E-9 -1.657042408477455E-9 3.992040358381682E-11
peri -4.153016721300522E-13 1.137959240088051E-12 2.840117294910083E-8 -1.657042408477455E-9 6.842646681491902E-9 -4.044048390680158E-11
i -4.245158462176269E-17 6.639462883989556E-16 -4.914830480941261E-12 3.992040358381682E-11 -4.044048390680158E-11 1.493969672531644E-11

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 12.6   n/a MPO332888  
diameter diameter 10.099 km 0.161 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.190   0.028 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

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 | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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