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16626 Thumper (1993 HJ3)
Classification: Main-belt Asteroid          SPK-ID: 2016626
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 8 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .02756702732950125 5.3579e-08  
a 2.90005511783304 2.6939e-08 AU
q 2.820109219142677 1.5418e-07 AU
i 3.200043761333028 5.8246e-06 deg
node 104.4977775891566 9.4411e-05 deg
peri 358.8841900785287 0.00014397 deg
M 227.3763876722497 0.00011058 deg
tp 2457665.047696618540
(2016-Oct-03.54769662)
0.00055764 JED
period 1803.880670897818
4.94
2.5135e-05
6.882e-08
d
yr
n .1995697419501827 2.7808e-09 deg/d
Q 2.980001016523404 2.7682e-08 AU
  Orbit Determination Parameters
   # obs. used (total)      1059  
   data-arc span      12290 days (33.65 yr)  
   first obs. used      1981-12-20  
   last obs. used      2015-08-14  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .50461  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Sep-02 14:46:05  

Additional Information
 Earth MOID = 1.83684 AU 
 T_jup = 3.284 
[ 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 13.6 mag n/a PDS3 (MPO 2889)  
rotation period rot_per 6.8127 h n/a LCDB (Rev. 2015-July); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J., in press.]

16626 Thumper           Discovered 1993 Apr. 20 by Spacewatch at Kitt Peak.
Thumper was a fictional young rabbit in Walt Disney's 1942 animated film, Bambi. Thumper's wisecracks and antics have been comic relief for generations of children the world over. The name was suggested by R. Jedicke and P. Jedicke.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20050919/MPCPages.arcLast Updated: 2005-09-26

Alternate Designations
 1993 HJ3 = 1981 YJ 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances ]
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