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10967 Billallen (4349 T-1)
Classification: Main-belt Asteroid          SPK-ID: 2010967
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2456800.5 (2014-May-23.0) TDB
Reference: JPL 4 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .3112873772281849 6.5296e-08  
a 2.769451240324023 2.8148e-08 AU
q 1.907356027362214 1.8332e-07 AU
i 8.997847098031691 7.5392e-06 deg
node 158.3665491592945 4.0466e-05 deg
peri 191.125114150253 4.2399e-05 deg
M 341.4475278754736 2.0161e-05 deg
tp 2456887.253758411218
(2014-Aug-17.75375841)
9.539e-05 JED
period 1683.406546492018
4.61
2.5665e-05
7.027e-08
d
yr
n .2138520850772437 3.2603e-09 deg/d
Q 3.631546453285833 3.691e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      749  
   data-arc span      15465 days (42.34 yr)  
   first obs. used      1971-03-26  
   last obs. used      2013-07-28  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .58993  
   data source      ORB  
   producer      Otto Matic  
   solution date      2013-Aug-26 19:38:32  

Additional Information
 Earth MOID = .900483 AU 
 T_jup = 3.248 
[ 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 13.7 mag n/a MPO267751  

10967 Billallen           Discovered 1971 Mar. 26 by C. J. van Houten and I. van Houten-Groeneveld on Palomar Schmidt plates taken by T. Gehrels.
William H. Allen (b. 1939), an electrical engineer and amateur astronomer, erected his private observatory with a 0.32-m telescope in Rapaura, New Zealand. He has participated in photometric campaigns on cataclysmic variables, notably \eta Carinae, as well as on stellar occultations by minor planets.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20060219/MPCPages.arcLast Updated: 2010-06-03

[ show close-approach data ]
Alternate Designations
 4349 T-1 = 1977 RJ8 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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