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21937 Basheehan (1999 VV80)
Classification: Main-belt Asteroid          SPK-ID: 2021937
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 32 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .03445082219783519 3.4816e-08  
a 2.922839196418393 1.4233e-08 au
q 2.82214498294972 1.019e-07 au
i 1.055128013187881 4.076e-06 deg
node 230.882093875009 0.00019151 deg
peri 36.49059967785574 0.0002012 deg
M 212.1428110383221 6.3842e-05 deg
tp 2459950.127923309902
(2023-Jan-05.62792331)
0.00032537 TDB
period 1825.180461543262
5.00
1.3331e-05
3.65e-08
d
yr
n .1972407702061448 1.4407e-09 deg/d
Q 3.023533409887067 1.4723e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1506  
   data-arc span      10503 days (28.76 yr)  
   first obs. used      1992-04-23  
   last obs. used      2021-01-24  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .54988  
   source      ORB  
   producer      Otto Matic  
   solution date      2021-Feb-24 02:55:12  

Additional Information
 Earth MOID = 1.80442 au 
 Jupiter MOID = 1.9906 au 
 T_jup = 3.278 
[ 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 14.6   n/a MPO365513  

21937 Basheehan           Discovered 1999 Nov. 4 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Brittany Ann Sheehan (b. 1991) is a finalist in the 2005 Discovery Channel Young Scientist Challenge (DCYSC), a middle school science competition, for her biochemistry, medicine, health, & microbiology project. She attends the Bluffton Middle School, Bluffton, Ohio.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20051019/MPCPages.arcLast Updated: 2005-10-26

Alternate Designations
 1999 VV80 = 1994 WG9 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]
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