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8646 (1988 TB1)
Classification: Main-belt Asteroid          SPK-ID: 2008646
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2457000.5 (2014-Dec-09.0) TDB
Reference: JPL 5 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1495937030975883 6.7934e-08  
a 2.430972664391992 1.967e-08 AU
q 2.067314461396584 1.5837e-07 AU
i 4.971890007886057 7.5168e-06 deg
node 208.83892315 5.8204e-05 deg
peri 144.3908143329563 6.274e-05 deg
M 345.3330035057371 2.6751e-05 deg
tp 2457056.903652376064
(2015-Feb-03.40365238)
0.00010333 JED
period 1384.422152369463
3.79
1.6803e-05
4.6e-08
d
yr
n .2600362897862142 3.156e-09 deg/d
Q 2.794630867387401 2.2612e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      910  
   data-arc span      21734 days (59.50 yr)  
   first obs. used      1954-12-21  
   last obs. used      2014-06-23  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .56208  
   data source      ORB  
   producer      Otto Matic  
   solution date      2014-Sep-12 13:53:51  

Additional Information
 Earth MOID = 1.0651 AU 
 T_jup = 3.487 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.3 mag n/a MPO263426  

8646 (1988 TB1)          Discovered 1988-Oct-13 by Ueda, S., Kaneda, H. at Kushiro (399)
Reference: 19980511/Numbers.arcLast Updated: 2004-04-19

Alternate Designations
 1988 TB1 = 1991 KH2 = 1992 WC4 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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