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17928 Neuwirth (1999 GJ21)
Classification: Main-belt Asteroid          SPK-ID: 2017928
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 37 (heliocentric ecliptic J2000)
 Element Value Uncertainty (1-sigma)   Units 
e .1579248997662945 4.4079e-08  
a 2.443021807490529 8.2255e-09 au
q 2.057207833415716 1.1007e-07 au
i 6.97838063900351 4.0468e-06 deg
node 34.69645330916443 3.3257e-05 deg
peri 319.7067715551961 3.4883e-05 deg
M 59.14856422861975 1.0272e-05 deg
tp 2458771.344044427770
(2019-Oct-14.84404443)
3.9727e-05 TDB
period 1394.727751753036
3.82
7.044e-06
1.929e-08
d
yr
n .2581148898396231 1.3036e-09 deg/d
Q 2.828835781565343 9.5245e-09 au
  Orbit Determination Parameters
   # obs. used (total)      1876  
   data-arc span      23930 days (65.52 yr)  
   first obs. used      1954-07-29  
   last obs. used      2020-02-03  
   planetary ephem.      DE431  
   SB-pert. ephem.      SB431-N16  
   condition code      0  
   norm. resid. RMS      .46606  
   source      ORB  
   producer      Otto Matic  
   solution date      2020-Feb-22 22:15:14  

Additional Information
 Earth MOID = 1.05882 au 
 Jupiter MOID = 2.62334 au 
 T_jup = 3.473 
[ 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 13.6   n/a MPO435866  
diameter diameter 4.316 km 0.251 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  
geometric albedo albedo 0.198   0.030 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)  

17928 Neuwirth           Discovered 1999 Apr. 15 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.
Melissa Marie Neuwirth (b. 1984) was awarded fourth place in the 2003 Intel International Science and Engineering Fair for her behavioral and social sciences team project. She attends the Francis Howell North High School, St. Charles, Missouri, 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: 20040614/MPCPages.arcLast Updated: 2009-12-11

[ show close-approach data ]
Alternate Designations
 1999 GJ21 = 1954 OM = 1977 QY1 = 1981 SR1 
Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances | Close-Approach Data ]
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