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

[ show orbit diagram ]
Orbital Elements at Epoch 2459396.5 (2021-Jul-01.0) TDB
Reference: JPL 29 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .128873377910818 3.7832e-08  
a 2.620637187785259 1.1319e-08 au
q 2.282906821116666 1.0345e-07 au
i 5.483218046090992 3.3843e-06 deg
node 90.51408204572522 4.3491e-05 deg
peri 311.8101345563843 4.621e-05 deg
M 14.05395395173978 1.6674e-05 deg
tp 2459336.007044738072
(2021-May-01.50704474)
7.1632e-05 TDB
period 1549.56135256145
4.24
1.004e-05
2.749e-08
d
yr
n .2323238117709338 1.5052e-09 deg/d
Q 2.958367554453852 1.2778e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1125  
   data-arc span      10192 days (27.90 yr)  
   first obs. used      1993-03-17  
   last obs. used      2021-02-10  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .53172  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Jul-09 10:14:30  

Additional Information
 Earth MOID = 1.29565 au 
 Jupiter MOID = 2.42368 au 
 T_jup = 3.387 
[ 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 14.9   n/a MPO344474  
diameter diameter 3.453 km 0.883 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.195   0.136 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

21776 Kryszczyńska           Discovered 1999 Sept. 5 by the Lowell Observatory Near-Earth Object Search at the Anderson Mesa Station.
Agnieszka Kryszczyńska (b. 1965) is a planetary scientist at Adam Mickiewicz University, Poznań. 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

Alternate Designations
 1999 RE221 = 1993 FD15 = 1995 WA41 = 1999 TW280 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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