( 66391) 1999 KW4

(1999 KW4 )

Discovery Circumstances:

LINEAR - Lincoln Laboratory ETS, New Mexico

20 May 1999

(1)

Orbital Type:

AT

(*)( 2)( 3)( 4)( 5)( 6)( 7)( 8)( 9)

Taxonomic Type:

S:

(10)(11)

Albedo:

m

(12)

Diameter:(km)

1.6 km

(13)

H:(mag)

16.50

(#)

G:

0.15

(#)

U-B:(mag)

-

-

B-V:(mag)

-

-

V-R:(mag)

-

-

R-I:(mag)

-

-

Rotation Period:(hrs)

2.7650+17.44

(14)(15)(16)(17)(18)

Quality:

3B !

(14)(15)(16)(17)(18)

Lightcurve Amplitude:(mag)

0.12

(14)(15)(16)(17)(18)

Spin Vector:

-

-

Sense of Rotation:

-

-

Radar Observations:

Y

(19)(20)(21)

Spectral Observations:

Y

(22)(23)

IR Observations:

-

-

Remarks

* - orbital type derived from osculating orbital elements

# - absolute magnitude H derived from astrometric observation via orbit determination - G value assumed to be 0.15

! - quality code according to Lagerkvist et al. (1989) in "Asteroids II" (Eds. R.P.Binzel et al.), Univ.Ariz.Press, Tucson, USA, pp. 1162-1179.

B - in rotation quality code means Binary asteroid

References

( 1) M.P.E.C. 1999-K28

(002) Scheeres, D.J. et al. (2006) Science 314, 1280-1283. (Dynamical configuration of binary near-Earth asteroid (66391) 1999 KW4)

(003) McMahon, J.W. & D.J. Scheeres (2009) DPS 41, 5609. (Predictions For The Effects Of BYORP On 1999 KW4)

(004) McMahon J. & D. Scheeres (2010) Icarus 209, 494-509. (Detailed prediction for the BYORP effect on binary near-Earth Asteroid (66391) 1999 KW4 and implications for the binary population)

(005) McMahon, J. & D. Scheeres (2010) DPS 42, 6306. (abstract) (Measuring the Binary YORP Effect and the Influence of Librations on Binary Asteroid Evolution) (1999KW4)

(006) McMahon, J.W. & D.J. Scheeres (2012) DPS 44 105-08. (abstract) (Binary-YORP Coefficients for Known Asteroid Shapes) (1999KW4)

(007) Scheeres, D.J. (2014) Icarus 247, 1-17. (Landslides and Mass shedding on spinning spheroidal asteroids) (1999KW4,2008EV5)

(008) Richardson, J.E. & P.A. Taylor (2015) LPSC 46,1895. (THE FATE OF IMPACT EJECTA IN THE 1999 KW4 BINARY ASTEROID SYSTEM: A DETAILED MODELING INVESTIGATION)

(009) Sanchez, P. & D.J. Scheeres (2016) P&SS 271, 453-471. (Disruption patterns of rotating self-gravitating aggregates: A survey on angle of friction and tensile strength) (..,1950DA,1999KW4)

(010) Binzel, R.P. et al. (2004) Icarus 170, 259-294. (Observed spectral properties of near-Earth objects: results for population distribution, source regions, and space weathering processes.)

(011) DeMeo, F.E. et al. (2014) Icarus 227, 112-122. (Mars encounters cause fresh surfaces on some near-Earth asteroids) (contains taxonomic classification of 249 NEAs)

(012) Binzel, R.P. et al. (2002) in "Asteroids III" (Eds. W.F.Bottke et al.), Univ.Ariz.Press, Tucson, USA, pp. 255-271. (Physical Properties of NEOs)

(013) Binzel, R.P. et al. (2002) in "Asteroids III" (Eds. W.F.Bottke et al.), Univ.Ariz.Press, Tucson, USA, pp. 255-271. (Physical Properties of NEOs)

(014) Pravec, P. et al. (2006) Icarus 181, 63-93. (Photometric survey of binary near-Earth asteroids)

(015) Petr Pravec's Ondrejov NEO Photometric Program Webpage "Prepublished Periods"

(016) Pravec, P. et al. (2001) I.A.U. Circ. 7633. (1999 KW4) (Rotation period and colors, complex lightcurve, binary)

(017) Krugly, Yu. N. et al. (2002) Proceedings of ACM2002, ESA-SP500, pp. 903-906. (CCD photometry of Near-Earth asteroids in 2001) (rot.per. for 719,1916,26760,33342 2001 MF1; LCs for 1620,3103,5587,1999 K W4)

(018) Pravec, P. et al (2016) Icarus 267,267-295. (Binary asteroid population. 3. Secondary rotations and elongations) (..,..)

(019) JPL's NEO Radar Detection Program Webpage

(020) Benner, L.A.M. et al. (2001) I.A.U. Circ. 7632. (1999 KW4) (Binary asteroid detection)

(021) Ostro, S.J. et al. (2006) Science 314, 1276-1280. (Radar imaging of binary near-Earth asteroid (66391) 1999 KW4)

(022) Binzel, R.P. et al. (2004) Icarus 170, 259-294. (Observed spectral properties of near-Earth objects: results for population distribution, source regions, and space weathering processes.)

(023) Davies, J.K. et al. (2007) Icarus 186,111-125. (Near-infrared spectra of 12 near-Earth objects) (1627,4179,5381,5587,6489,11405,14402,25143,25330,52760,66391,101955)


NEODyS Page of ( 66391) 1999 KW4