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(meteorobs) re C/2000 WM1




Someone, somewhere, recently asked about C/2000 WM1

Well, it ain't got here yet, but in 2002 we get these values:

>             EQUINOX: 2000.0;       DATA FOR YEAR: 2002
>--------------------------------------------------------------------
>METH.  ALPHA  DELTA    VG      VH        L     DATE-MAX.    D-DISC.
> -Q     94.1   58.6   46.62   42.38    237.9   NOV. 20.4     .120
> -B     95.6   59.2   45.94   41.63    237.9   NOV. 20.4     .115
> -W     98.0   64.6   45.94   42.38    237.9   NOV. 20.4     .242
> -A    162.5   52.7   46.38   42.48    283.4   JAN.  3.9     .738
> -H    104.8   64.3   45.81   42.40    242.2   NOV. 24.7     .232
> -P     96.6   61.9   45.41   42.39    240.1   NOV. 22.6     .143
> Q+     36.6  -29.6   45.26   41.88     57.9   MAY  19.1     .010
> B+     36.6  -29.6   45.30   41.92     57.9   MAY  19.1     .010
> W+     36.5  -29.1   45.31   41.88     57.9   MAY  19.1     .020
> A+     39.8  -27.8   45.17   41.87     61.8   MAY  23.1     .065
> H+     36.8  -29.0   45.31   41.88     58.2   MAY  19.4     .019
> P+     36.6  -29.4   45.33   41.88     58.1   MAY  19.2     .011
>--------------------------------------------------------------------

[Neslusan et al , A&A 331, 411 (1998)]

RA, DEC in degrees; VG, VH in km/s

so, most post-perihelic arc solutions [the '+' ones] have good d disc.

Nearest orbital distance is 0.013 AU, which is a bit big, and the orbit
does not appear to be periodic [if anything it is just hyperbolic!]

If anything happened they could be called the "alpha Piscis Austrinids" at
a pinch, but we'd be talking daylight shower here [at least for Northern
climes, I'm not sure about SH dusk/dawn]

Cheers

John

John Greaves UK

PS, I think the query came from somebody IMO-NEWS, which I'm not on.  Could
someone forward this to that person, but _not_ imo-news?  Ta!
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