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22919 Shuwan (1999 TR91)
Classification: Main-belt Asteroid          SPK-ID: 2022919
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 28 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1035175681355443 3.0846e-08  
a 2.430630881210701 9.6997e-09 au
q 2.179017883352614 7.3815e-08 au
i 7.221891008852545 4.6838e-06 deg
node 141.1453850720738 2.6554e-05 deg
peri 317.7042525604801 3.619e-05 deg
M 135.8787799919032 2.3486e-05 deg
tp 2458678.072437113934
(2019-Jul-13.57243711)
9.0142e-05 TDB
period 1384.13019788808
3.79
8.2853e-06
2.268e-08
d
yr
n .2600911392217954 1.5569e-09 deg/d
Q 2.682243879068787 1.0704e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1294  
   data-arc span      9485 days (25.97 yr)  
   first obs. used      1994-06-10  
   last obs. used      2020-05-29  
   planetary ephem.      DE441  
   SB-pert. ephem.      SB441-N16  
   condition code      0  
   norm. resid. RMS      .49638  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Apr-13 04:14:47  

Additional Information
 Earth MOID = 1.20166 au 
 Jupiter MOID = 2.43673 au 
 T_jup = 3.490 
[ 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 15.18   n/a E2021B10  

22919 Shuwan           Discovered 1999 Oct. 2 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Shu Wan (b. 1989) is a finalist in the 2007 Intel Science Talent Search (STS), a science competition for high school seniors, for his medicine and health project. He attends the Classical High School, Providence, Rhode Island.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20070303/MPCPages.arcLast Updated: 2010-04-12

Alternate Designations
 1999 TR91 = 1994 LR2 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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