(137199) 1999 KX4

(1999 KX4 )

Discovery Circumstances:

LINEAR - Lincoln Laboratory ETS, New Mexico

20 May 1999

(1)

Orbital Type:

AM

(*)

Taxonomic Type:

Sq

( 2)

Albedo:

-

-

Diameter:(km)

1.3 - 2.8 km

($)

H:(mag)

16.90

(#)

G:

0.15

(#)

U-B:(mag)

-

-

B-V:(mag)

-

-

V-R:(mag)

-

-

R-I:(mag)

-

-

Rotation Period:(hrs)

2.767

( 3)( 4)

Quality:

3B? !

( 3)( 4)

Lightcurve Amplitude:(mag)

0.12-0.35

( 3)( 4)

Spin Vector:

-

-

Sense of Rotation:

-

-

Radar Observations:

Y

( 5)

Spectral Observations:

Y

( 6)

IR Observations:

-

-

Remarks

* - orbital type derived from osculating orbital elements

$ - diameter range derived from H and assumed albedo for C and S type - 0.04 and 0.20 respectively

# - 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-K29

(002) Hicks, M. et al. (2013) ATel#5132 (Palomar Spectroscopy of Near-Earth Asteroids 137199 (1999 KX4), 152756 (1999 JV3), 163249 (2002 GT), 163364 (2002 OD20), and 285263 (1998 QE2))

(003) Warner, B.D. (2013) MPB 40, 137-145. (ASTEROID LIGHTCURVE ANALYSIS AT THE PALMER DIVIDE OBSERVATORY: 2013 JANUARY - MARCH) (..,11405,137199,154347,343098,349068,2013BE19)

(004) Sanchez, J.A. et al. (2013) Icarus 225, 131-140. (Surface composition and taxonomic classification of a group of near-Earth and Mars-crossing asteroids) (,4055,19764,89830,138404,143381,159609,164121,241662,2007ML13)

(005) JPL's NEO Radar Detection Program Webpage

(006) Hicks, M. et al. (2013) ATel#5132 (Palomar Spectroscopy of Near-Earth Asteroids 137199 (1999 KX4), 152756 (1999 JV3), 163249 (2002 GT), 163364 (2002 OD20), and 285263 (1998 QE2))


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