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18994 Nhannguyen (2000 RO50)
Classification: Main-belt Asteroid          SPK-ID: 2018994
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]

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Orbital Elements at Epoch 2459000.5 (2020-May-31.0) TDB
Reference: JPL 30 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1524885317723049 3.6305e-08  
a 2.369118443242201 8.915e-09 au
q 2.007855050237509 8.5821e-08 au
i 7.415408849018895 3.6751e-06 deg
node 35.5743240300807 2.9091e-05 deg
peri 327.60011659149 3.1162e-05 deg
M 165.7978624610121 1.0925e-05 deg
tp 2458387.084121404273
(2018-Sep-25.58412140)
4.0295e-05 TDB
period 1331.921371099646
3.65
7.518e-06
2.058e-08
d
yr
n .2702862254569734 1.5256e-09 deg/d
Q 2.730381836246892 1.0274e-08 au
  Orbit Determination Parameters
   # obs. used (total)      1523  
   data-arc span      11159 days (30.55 yr)  
   first obs. used      1989-10-10  
   last obs. used      2020-04-29  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .47273  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-May-20 04:56:11  

Additional Information
 Earth MOID = 1.0107 au 
 Jupiter MOID = 2.7339 au 
 T_jup = 3.519 
[ 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 14.6   n/a MPO452440  
diameter diameter 2.969 km 0.900 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.220   0.066 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

18994 Nhannguyen           Discovered 2000 Sept. 5 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Nhan Duy Nguyen (b. 1987) was awarded fourth place in the 2003 Intel International Science and Engineering Fair for his computer science project. He attends the Southside High School, Greenville, South Carolina, U.S.A.
NOTE: some special characters may not display properly (any characters within {} are an attempt to place the proper accent above a character)
Reference: 20040830/MPCPages.arcLast Updated: 2004-09-06

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Alternate Designations
 2000 RO50 = 1989 TS17 = 1998 DY15 = 1999 KB10 = A916 UC 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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