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16626 Thumper (1993 HJ3)
Classification: Main-belt Asteroid          SPK-ID: 2016626
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459200.5 (2020-Dec-17.0) TDB
Reference: JPL 31 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03003168953498133 3.0109e-08  
a 2.898272942066823 1.225e-08 au
q 2.811232908883035 9.2494e-08 au
i 3.203130786709663 3.109e-06 deg
node 104.4111009584108 6.3856e-05 deg
peri 3.152115398911537 8.907e-05 deg
M 302.2803158296568 6.2333e-05 deg
tp 2459489.454056458873
(2021-Oct-01.95405646)
0.00031236 TDB
period 1802.218113636909
4.93
1.1426e-05
3.128e-08
d
yr
n .1997538462608798 1.2665e-09 deg/d
Q 2.985312975250611 1.2618e-08 au
  Orbit Determination Parameters
   # obs. used (total)      2105  
   data-arc span      14322 days (39.21 yr)  
   first obs. used      1981-12-20  
   last obs. used      2021-03-07  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .49036  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 01:37:01  

Additional Information
 Earth MOID = 1.82789 au 
 Jupiter MOID = 2.03798 au 
 T_jup = 3.285 
[ 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 13.78   n/a E2021B10  
rotation period rot_per 6.813 h n/a LCDB (Rev. 2020-October); 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. 150, A75.]

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 | Mission Design | Physical Parameters | Discovery Circumstances ]
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