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21776 Kryszczynska (1999 RE221)
Classification: Main-belt Asteroid          SPK-ID: 2021776
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbit Diagram
Note: Make sure you have Java enabled on your browser to see the applet. This applet is provided as a 3D orbit visualization tool. The applet was implemented using 2-body methods, and hence should not be used for determining accurate long-term trajectories (over several years or decades) or planetary encounter circumstances. For accurate long-term ephemerides, please instead use our Horizons system.

Note: If the applet has stopped working because of a recent Java upgrade, here is a possible workaround.
Orbit Viewer

Additional Notes: the orbits shown in the applet are color coded. The planets are white lines, and the asteroid/comet is a blue line. The bright white line indicates the portion of the orbit that is above the ecliptic plane, and the darker portion is below the ecliptic plane. Likewise for the asteroid/comet orbit, the light blue indicates the portion above the ecliptic plane, and the dark blue the portion below the ecliptic plane.

Orbit Viewer applet originally written and kindly provided by Osamu Ajiki (AstroArts), and further modified by Ron Baalke (JPL).

Orbital Elements at Epoch 2457600.5 (2016-Jul-31.0) TDB
Reference: JPL 15 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1314686308078798 7.4744e-08  
a 2.620727751703563 2.2103e-08 au
q 2.276184262466882 1.9723e-07 au
i 5.483761128125237 6.88e-06 deg
node 90.54324349853907 7.377e-05 deg
peri 311.2549363348937 7.7397e-05 deg
M 317.543018262898 2.5131e-05 deg
tp 2457783.258634483169
0.00010915 JED
period 1549.641677812579
n .2323117693299032 2.939e-09 deg/d
Q 2.965271240940243 2.5009e-08 au
  Orbit Determination Parameters
   # obs. used (total)      559  
   data-arc span      8179 days (22.39 yr)  
   first obs. used      1993-03-17  
   last obs. used      2015-08-08  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-BIG16  
   condition code      0  
   fit RMS      .56855  
   data source      ORB  
   producer      Otto Matic  
   solution date      2015-Sep-02 14:57:56  

Additional Information
 Earth MOID = 1.28792 au 
 Jupiter MOID = 2.4234 au 
 T_jup = 3.386 
[ 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 14.9 mag n/a MPO344474  

21776 Kryszczy\'nska           Discovered 1999 Sept. 5 by the Lowell Observatory Near-Earth Object Search at the Anderson Mesa Station.
Agnieszka Kryszczy\'nska (b. 1965) is a planetary scientist at Adam Mickiewicz University, Pozna\'n. Using photometry, she has studied the physical properties of minor planets. She discovered the binary nature of (809) Lundia and maintains a database of the pole coordinates and shapes of 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: 20080718/MPCPages.arcLast Updated: 2008-07-18

[ show close-approach data ]
Alternate Designations
 1999 RE221 = 1993 FD15 = 1995 WA41 = 1999 TW280 
Ephemeris | Orbit Diagram | Orbital Elements | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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