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JPL Small-Body Database Browser
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27284 Billdunbar (2000 AJ97)
Classification: Main-belt Asteroid          SPK-ID: 2027284
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 19 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1418483037558882 4.3471e-08  
a 2.448634237816602 9.5899e-09 au
q 2.101299624663725 1.0922e-07 au
i 3.267654863530262 4.1184e-06 deg
node 102.499413895305 7.8561e-05 deg
peri 93.68816407392775 8.0029e-05 deg
M 332.2325992133565 1.6655e-05 deg
tp 2458708.448604262273
(2019-Aug-12.94860426)
6.5048e-05 TDB
period 1399.536738530865
3.83
8.2218e-06
2.251e-08
d
yr
n .2572279741494336 1.5111e-09 deg/d
Q 2.795968850969479 1.095e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1576  
   data-arc span      10007 days (27.40 yr)  
   first obs. used      1991-12-14  
   last obs. used      2019-05-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .49141  
   source      ORB  
   producer      Otto Matic  
   solution date      2019-May-30 03:27:30  

Additional Information
 Earth MOID = 1.10319 au 
 Jupiter MOID = 2.16395 au 
 T_jup = 3.481 
[ show covariance matrix ]

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

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.5   n/a MPO337489  

27284 Billdunbar           Discovered 2000 Jan. 4 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Bill Dunbar mentored a finalist in the 2011 Intel Science Talent Search (STS), a science competition for high-school seniors. He teaches at the Henry M. Gunn Senior High School, Palo Alto, California, U.S.A.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20110319/MPCPages.arcLast Updated: 2011-03-23

Alternate Designations
 2000 AJ97 = 1998 VZ15 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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