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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 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 12 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1491669596580944 6.6618e-08  
a 2.431098054609647 1.8746e-08 au
q 2.068458549172818 1.5471e-07 au
i 4.972503379674007 7.1742e-06 deg
node 208.8261511275786 5.7876e-05 deg
peri 144.450011813191 6.2402e-05 deg
M 141.3481626964307 2.7806e-05 deg
tp 2457056.887033065652
(2015-Feb-03.38703307)
0.00010259 JED
period 1384.52926704584
3.79
1.6014e-05
4.384e-08
d
yr
n .260016171971669 3.0075e-09 deg/d
Q 2.793737560046476 2.1542e-08 au
  Orbit Determination Parameters
   # obs. used (total)      978  
   data-arc span      22383 days (61.28 yr)  
   first obs. used      1954-12-21  
   last obs. used      2016-04-02  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .55049  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Apr-25 13:03:03  

Additional Information
 Earth MOID = 1.06502 au 
 Jupiter MOID = 2.64452 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
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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