Googling around a bit for "Latyshev-Wild-Burnham" I found this:

http://pds-smallbodies.astro.umd.edu/SBNcomet/archive/PCC/
http://pds-smallbodies.astro.umd.edu/SBNcomet/archive/PCC/pccmag.tab

It appears that this comet has an absolute magnitude of 10.6. Presumably
the "slope parameter" is the standard one one assigns to all comets with
insufficient observations to determine an individual slope parameter.


Bernd Brinkmann wrote:

> Hello Bill,
>
> I just followed the discussion on the yahoogroups COMETS-ML about comet
> C/1957 U1 (Latyshev-Wild-Burnham), which is 1957 IX in Guides database.
>
> There seems to be no brigthness information for this comet within
> Guides ephemeries, since it is listed with 99.0 mag. But at the end of
> September 1957 it is drawn with a 45' wide coma and a 17 deg long tail.
> It was discovered on Oct. 16 1957 with a pair of 7x50 binoculars, so
> probably it was bright.
>
> Are there some other information within Guide which are not displayed,
> even in MORE INFO, which leads to this representation of a bright
> comet(perhaps empirically, distance to the sun or earth, elongation)?
>
> Clear skies
> Bernd
>
> Bernd Brinkmann
> Sternwarte Herne, MPC code A18
>
> http://www.sternwarte-herne.de
> info@...
>
>
>
>
>
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