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JPL Small-Body Database Browser
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21450 Kissel (1998 HD23)
Classification: Main-belt Asteroid          SPK-ID: 2021450
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

[ show orbit diagram ]
Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 23 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .05059242047309178 5.4225e-08  
a 2.208983052588231 7.5107e-09 au
q 2.097225253173754 1.2174e-07 au
i 8.34492342260485 5.7942e-06 deg
node 38.85184218270549 2.2674e-05 deg
peri 339.9547844022359 4.7096e-05 deg
M 83.16203056146659 3.9899e-05 deg
tp 2458723.480981009547
(2019-Aug-27.98098101)
0.00013335 TDB
period 1199.187251240255
3.28
6.116e-06
1.674e-08
d
yr
n .3002033248999864 1.5311e-09 deg/d
Q 2.320740852002709 7.8907e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1424  
   data-arc span      13229 days (36.22 yr)  
   first obs. used      1983-11-08  
   last obs. used      2020-01-27  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .53362  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 23:24:42  

Additional Information
 Earth MOID = 1.10213 au 
 Jupiter MOID = 2.85982 au 
 T_jup = 3.643 
[ show covariance matrix ]

Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

Physical Parameter Table
Parameter Symbol Value Units Sigma Reference Notes
absolute magnitude H 14.9   n/a MPO449110  

21450 Kissel           Discovered 1998 Apr. 20 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Stacy Kissel mentored a finalist in the 2005 Intel Science Talent Search, a science competition for high school seniors. She teaches at the Brookline High School, Brookline, Massachusetts.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20050224/MPCPages.arcLast Updated: 2005-02-28

[ show close-approach data ]
Alternate Designations
 1998 HD23 = 1983 VA5 = 1999 SR17 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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