Backward scattering C/2007 N3 Lulin
- Dear all.
In the period 2009 February 24 - March 4, C/2007 N3 Lulin reach a near
backward scattering geometry (phase angle < 10 degrees, with a minimum
of 0.1 degrees (!) on Feb. 26.3).
Using a linear phase coefficient of beta = 0.02, a maximum brightening
of about 0.6 magnitudes on Feb. 26 is possible.
In a moonless dark sky, there are good opportunities for photometric
The so-called opposition effect, mainly observed between scatter angle
173 and 180 degrees at moon and asteroids, is unlike.
Groningen, The Netherlands