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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 2457400.5 (2016-Jan-13.0) TDB
Reference: JPL 9 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1493826385235814 6.695e-08  
a 2.430503921738207 1.9152e-08 au
q 2.067428832967042 1.5593e-07 au
i 4.97235290180963 7.3964e-06 deg
node 208.8373413793876 5.7991e-05 deg
peri 144.3681310346643 6.2519e-05 deg
M 89.39784092138687 2.7374e-05 deg
tp 2457056.809565231680
(2015-Feb-03.30956523)
0.0001025 JED
period 1384.021753113673
3.79
1.6359e-05
4.479e-08
d
yr
n .2601115186160173 3.0745e-09 deg/d
Q 2.793579010509373 2.2014e-08 au
  Orbit Determination Parameters
   # obs. used (total)      959  
   data-arc span      22276 days (60.99 yr)  
   first obs. used      1954-12-21  
   last obs. used      2015-12-17  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .55034  
   data source      ORB  
   producer      Otto Matic  
   solution date      2016-Jan-04 13:07:56  

Additional Information
 Earth MOID = 1.06305 au 
 Jupiter MOID = 2.64397 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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