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JPL Small-Body Database Browser

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17926 Jameswu (1999 GA18)

Classification: Main-belt Asteroid          SPK-ID: 2017926

[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

[ show orbit diagram ]

Orbital Elements at Epoch 2458600.5 (2019-Apr-27.0) TDB
Reference: JPL 26 (heliocentric ecliptic J2000)

Element Value Uncertainty (1-sigma) Units

e .1003075118969711 2.9427e-08

a 2.200598398379499 8.3882e-09 au

q 1.979861848353591 6.3682e-08 au

i 4.321446847817954 4.3474e-06 deg

node 16.80447101197052 6.0854e-05 deg

peri 230.5158121691308 6.7491e-05 deg

M 359.547050010933 2.9474e-05 deg

t_p 2458602.000228351043
(2019-Apr-28.50022835) 9.7622e-05 TDB

period 1192.366087673031
3.26 6.8176e-06
1.867e-08 d
yr

n .3019206967740588 1.7263e-09 deg/d

Q 2.421334948405406 9.2296e-09 au

Orbit Determination Parameters

   # obs. used (total)      1411

   data-arc span      8399 days (23.00 yr)

   first obs. used      1996-03-24

   last obs. used      2019-03-23

   planetary ephem.      DE431

   SB-pert. ephem.      SB431-N16

   condition code      0

   norm. resid. RMS      .54281

   source      ORB

   producer      Otto Matic

   solution date      2019-Jul-12 22:25:59

Additional Information

Earth MOID = .969641 au

Jupiter MOID = 2.5936 au

T_jup = 3.655

[ 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 14.7 n/a MPO431705

diameter diameter 3.307 km 0.259 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)

rotation period rot_per 5.343 h n/a LCDB (Rev. 2019-January); Warner et al., 2009 Result based on less than full coverage, so that the period may be wrong by 30 percent or so.
Published Reference List:
[Waszczak, A.; Chang, C.-K.; Ofeck, E.O.; Laher, F.; et al. (2015) Astron. J. 150, A75.]

geometric albedo albedo 0.177 0.058 urn:nasa:pds:neowise_diameters_albedos::2.0[mainbelt] (http://adsabs.harvard.edu/abs/2011ApJ...741...68M)

17926 Jameswu           Discovered 1999 Apr. 15 by the Lincoln Laboratory Near-Earth Asteroid Research Team at Socorro.

James YW Wu (b. 1987) was awarded third place in the 2003 Intel International Science and Engineering Fair for his zoology team project. He attends the Keystone School, San Antonio, Texas, 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.arc Last Updated: 2009-12-11

Alternate Designations
1999 GA18 = 2000 QK142

[ Ephemeris | Orbit Diagram | Orbital Elements | Mission Design | Physical Parameters | Discovery Circumstances ]

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