Hello GUIDE users,

Here is advanced notice of 1999KW4 which will brighten to 10th magnitude as
it passes by Earth on 25th May at a very close distance of 5 million kms.
However, the orbital elements are mysteriously not on the soft02unusual
file.
Hence I've supplied them for you.
1999 KW4 will be perfectly positioned in the late evening sky for both
hemispheres.

Cheers,
Michael Mattiazzo
Wallaroo, South Aust
mmatti@...


Asteroid 1999 KW4
Alternate Designation: none
OSCULATING ORBITAL ELEMENTS
(heliocentric ecliptic reference frame)
Epoch of Osculation (Julian Day, ET)2452000.5
Epoch of Osculation (Calendar Date, ET)2001-04-01
Mean Anomaly (deg)30.5848472
Argument of Perihelion (deg)192.5949917
Longitude of the Ascending Node (deg)244.9446413
Inclination (deg)38.89501
Eccentricity0.688407486
Semi-major Axis (AU)0.64229713
Perihelion Passage (Julian Day, ET)2451984.5262746
Perihelion Passage (Calendar Date, ET)2001-03-16.0262746
Perihelion Distance (AU)0.200134978

PHYSICAL PARAMETERS
GM (km^3 s^-2)unknown
Radius (km)unknown
H (absolute magnitude)16.500
G (magnitude slope parameter)0.15
Color Index (B-V)unknown
Rotation Period (h)3.000
Geometric Albedounknown
Spectral Classunknown
Orbit Solution Data Arc1999-2000
Observations used in Orbit Solution500