[Message Prev][Message Next][Thread Prev][Thread Next][Message Index][Thread Index]
[vsnet-chat 5248] Re: Pre-discovery rendezvous of C/2002 E2
- Date: Mon, 18 Mar 2002 09:15:00 -1000 (HST)
- To: vsnet-chat@kusastro.kyoto-u.ac.jp
- From: Michael Linnolt <linnolt@hawaii.edu>
- Subject: [vsnet-chat 5248] Re: Pre-discovery rendezvous of C/2002 E2
- Delivered-To: vsnet-chat@kusastro.kyoto-u.ac.jp
- In-reply-to: <200203181522.g2IFMRY08563@amor.host4u.net>
- Sender: owner-vsnet-chat@ooruri.kusastro.kyoto-u.ac.jp
Dear Seiichi,
Your data showing conjunctions between the pre-deiscovery comet and
variable stars is interesting, but there may be several reasons why nobody
saw it.
1. The comet was low in east just before the twilight broke. Most
observers would have begun to finish by then, rather than continue to
measure variables in that part of sky as it brightens.
2. In the 2 weeks before discovery the waning moon was interfering and
passsed quite near to the fields around Mar6-10.
3. The conjunctions were not that close. Many were 1-2 degrees away,
outside the typical scopes fov, positioned there by goto for example.
4. Variable observers tend to work fast to get as many stars measured per
night as possible, so they go right for the target rather than scan
around.
In conclusion, the negative results dont surprise me so much!
Mike Linnolt
On Mon, 18 Mar 2002, Seiichi Yoshida wrote:
> Dear colleagues,
>
> I searched pre-discovery rendezvous of C/2002 E2 ( Snyder-Murakami ).
>
> The comet has been bright enough since January. Many rendezvous with
> frequently observed variable stars have occured. I wonder how the
> comet escaped variable star observers' views.
>
> I believe some of you have observed some of the following variable
> stars just on the day when the comet was near by.
>
> Please see the web pages for more information:
>
> http://vsnet.aerith.net/comet/rendezvous/current.html
>
> Best regards,
>
> 2002 Mar. 11 5h UT 1.400 deg ( 84.0 arcmin)
> C/2002 E2 ( Snyder-Murakami ) 18h54m.8 -01o10' 10.2 mag
> VX Aql (M:) 19h00m.2 -01o35' 12.2-<16.0 mag
>
> 2002 Mar. 10 17h UT 0.572 deg ( 34.3 arcmin)
> C/2002 E2 ( Snyder-Murakami ) 18h54m.2 -01o39' 10.2 mag
> CI Aql (N:) 18h52m.1 -01o29' 11.0-15.5 mag
>
> 2002 Mar. 8 9h UT 1.213 deg ( 72.8 arcmin)
> C/2002 E2 ( Snyder-Murakami ) 18h51m.6 -03o51' 10.2 mag
> EU Sct (NA) 18h56m.2 -04o13' 8.0-17.0 mag
>
> 2002 Mar. 7 8h UT 2.208 deg (132.5 arcmin)
> C/2002 E2 ( Snyder-Murakami ) 18h50m.3 -04o48' 10.2 mag
> RU Sct (DCEP) 18h41m.9 -04o07' 8.8-10.0 mag
>
> 2002 Mar. 7 7h UT 2.062 deg (123.7 arcmin)
> C/2002 E2 ( Snyder-Murakami ) 18h50m.3 -04o51' 10.2 mag
> FS Sct (N) 18h58m.3 -05o24' 10.1-16.6 mag
>
> 2002 Mar. 6 23h UT 0.787 deg ( 47.2 arcmin)
> C/2002 E2 ( Snyder-Murakami ) 18h49m.9 -05o09' 10.2 mag
> NSV 24587 (N:) 18h46m.9 -04o57' 8.0-<22.0 mag
>
> 2002 Mar. 6 5h UT 0.401 deg ( 24.0 arcmin)
> C/2002 E2 ( Snyder-Murakami ) 18h49m.0 -05o49' 10.2 mag
> R Sct (RVA) 18h47m.5 -05o42' 4.2-8.6 mag
>
> 2002 Mar. 4 4h UT 0.975 deg ( 58.5 arcmin)
> C/2002 E2 ( Snyder-Murakami ) 18h46m.6 -07o36' 10.3 mag
> S Sct (SRB) 18h50m.3 -07o54' 9.6-<10.9 mag
>
> 2002 Mar. 3 19h UT 0.922 deg ( 55.3 arcmin)
> C/2002 E2 ( Snyder-Murakami ) 18h46m.1 -07o56' 10.3 mag
> NSV 11235 (RV:) 18h42m.6 -07o38' 10.0-10.5 mag
>
> 2002 Mar. 2 3h UT 0.296 deg ( 17.7 arcmin)
> C/2002 E2 ( Snyder-Murakami ) 18h44m.1 -09o20' 10.3 mag
> FH Sct (RCB) 18h45m.2 -09o26' 13.4-16.8 mag
>
> 2002 Feb. 28 6h UT 2.497 deg (149.8 arcmin)
> C/2002 E2 ( Snyder-Murakami ) 18h41m.8 -10o52' 10.3 mag
> VW Sct (M) 18h32m.4 -09o55' 10.6-18.0 mag
>
> 2002 Feb. 18 17h UT 1.702 deg (102.1 arcmin)
> C/2002 E2 ( Snyder-Murakami ) 18h29m.4 -17o56' 10.5 mag
> V3645 Sgr (NB) 18h35m.8 -18o42' 8.0-18.0 mag
>
> 2002 Feb. 10 4h UT 1.793 deg (107.6 arcmin)
> C/2002 E2 ( Snyder-Murakami ) 18h17m.5 -23o22' 10.7 mag
> GU Sgr (RCB) 18h24m.3 -24o15' 11.3-15.0 mag
>
> 2002 Feb. 9 23h UT 2.443 deg (146.6 arcmin)
> C/2002 E2 ( Snyder-Murakami ) 18h17m.2 -23o29' 10.7 mag
> VX Sgr (SRC) 18h08m.1 -22o13' 6.5-14.0 mag
>
> 2002 Feb. 9 19h UT 0.107 deg ( 6.4 arcmin)
> C/2002 E2 ( Snyder-Murakami ) 18h16m.9 -23o35' 10.7 mag
> FM Sgr (NA) 18h17m.3 -23o38' 8.2-16.5 mag
>
> 2002 Feb. 9 0h UT 1.480 deg ( 88.8 arcmin)
> C/2002 E2 ( Snyder-Murakami ) 18h15m.8 -24o03' 10.7 mag
> V1860 Sgr (RCB:) 18h21m.5 -24o45' 13.5-15.5 mag
>
> 2002 Feb. 8 6h UT 1.394 deg ( 83.6 arcmin)
> C/2002 E2 ( Snyder-Murakami ) 18h14m.7 -24o29' 10.7 mag
> V1016 Sgr (NA) 18h20m.0 -25o11' 7.0-15.0 mag
>
> 2002 Feb. 8 6h UT 1.966 deg (118.0 arcmin)
> C/2002 E2 ( Snyder-Murakami ) 18h14m.7 -24o29' 10.7 mag
> V441 Sgr (NA) 18h22m.1 -25o29' 8.7-16.5 mag
>
> 2002 Feb. 7 21h UT 1.384 deg ( 83.1 arcmin)
> C/2002 E2 ( Snyder-Murakami ) 18h14m.1 -24o41' 10.7 mag
> V4641 Sgr (XN) 18h19m.4 -25o24' 9.0-13.8 mag
>
> 2002 Feb. 6 7h UT 0.413 deg ( 24.8 arcmin)
> C/2002 E2 ( Snyder-Murakami ) 18h11m.8 -25o35' 10.8 mag
> V3795 Sgr (RCB) 18h13m.4 -25o47' 11.5-<15.5 mag
>
> 2002 Feb. 3 23h UT 2.019 deg (121.2 arcmin)
> C/2002 E2 ( Snyder-Murakami ) 18h08m.3 -26o51' 10.8 mag
> V2323 Sgr (UG:) 18h15m.9 -27o57' 13.1-16.5 mag
>
> 2002 Feb. 3 20h UT 1.501 deg ( 90.1 arcmin)
> C/2002 E2 ( Snyder-Murakami ) 18h08m.1 -26o55' 10.8 mag
> V1830 Sgr (UG) 18h13m.8 -27o42' 11.5-17.5 mag
>
> 2002 Feb. 3 20h UT 2.397 deg (143.8 arcmin)
> C/2002 E2 ( Snyder-Murakami ) 18h08m.1 -26o55' 10.8 mag
> V2905 Sgr (ZAND) 18h17m.3 -28o10' 10.0-14.6 mag
>
> 2002 Feb. 1 10h UT 1.143 deg ( 68.6 arcmin)
> C/2002 E2 ( Snyder-Murakami ) 18h04m.4 -28o12' 10.9 mag
> V999 Sgr (NB) 18h00m.1 -27o33' 7.5-16.6 mag
>
> 2002 Jan. 30 17h UT 0.883 deg ( 53.0 arcmin)
> C/2002 E2 ( Snyder-Murakami ) 18h01m.7 -29o04' 10.9 mag
> W Sgr (DCEP) 18h05m.0 -29o35' 4.3-5.1 mag
>
> 2002 Jan. 30 2h UT 0.379 deg ( 22.8 arcmin)
> C/2002 E2 ( Snyder-Murakami ) 18h00m.7 -29o23' 10.9 mag
> V4338 Sgr (UG) 17h59m.3 -29o10' 8.0-<14.0 mag
>
> 2002 Jan. 29 16h UT 0.054 deg ( 3.3 arcmin)
> C/2002 E2 ( Snyder-Murakami ) 18h00m.1 -29o35' 10.9 mag
> V735 Sgr 17h59m.9 -29o34' 0.0 mag
>
> 2002 Jan. 25 23h UT 0.235 deg ( 14.1 arcmin)
> C/2002 E2 ( Snyder-Murakami ) 17h54m.1 -31o23' 11.0 mag
> V744 Sco (N:) 17h53m.3 -31o14' 13.3-<15.6 mag
>
> 2002 Jan. 25 6h UT 1.103 deg ( 66.2 arcmin)
> C/2002 E2 ( Snyder-Murakami ) 17h53m.0 -31o43' 11.0 mag
> V1178 Sco (?) 17h57m.1 -32o23' 10.2-<14.6 mag
>
> 2002 Jan. 23 16h UT 1.322 deg ( 79.3 arcmin)
> C/2002 E2 ( Snyder-Murakami ) 17h50m.4 -32o27' 11.1 mag
> V745 Sco (NA) 17h55m.4 -33o15' 11.0-<14.9 mag
>
> 2002 Jan. 23 3h UT 1.816 deg (109.0 arcmin)
> C/2002 E2 ( Snyder-Murakami ) 17h49m.5 -32o41' 11.1 mag
> AI Sco (RVB) 17h56m.3 -33o49' 9.3-12.9 mag
>
> 2002 Jan. 21 21h UT 1.700 deg (102.0 arcmin)
> C/2002 E2 ( Snyder-Murakami ) 17h47m.4 -33o15' 11.1 mag
> BM Sco (SRD) 17h41m.0 -32o13' 6.8-8.7 mag
>
> 2002 Jan. 21 21h UT 0.990 deg ( 59.4 arcmin)
> C/2002 E2 ( Snyder-Murakami ) 17h47m.4 -33o15' 11.1 mag
> V1086 Sco (LB) 17h43m.6 -32o40' 6.4-6.7 mag
>
> 2002 Jan. 19 11h UT 1.768 deg (106.1 arcmin)
> C/2002 E2 ( Snyder-Murakami ) 17h43m.3 -34o19' 11.2 mag
> V723 Sco (NA) 17h50m.1 -35o24' 9.0-22.2 mag
>
> 2002 Jan. 13 10h UT 1.866 deg (112.0 arcmin)
> C/2002 E2 ( Snyder-Murakami ) 17h32m.6 -36o50' 11.3 mag
> V478 Sco (UG) 17h26m.0 -35o33' 14.0-16.7 mag
>
> 2001 Dec. 29 6h UT 1.056 deg ( 63.4 arcmin)
> C/2002 E2 ( Snyder-Murakami ) 17h03m.3 -42o29' 11.7 mag
> V992 Sco (NA) 17h07m.3 -43o15' 7.3-18.0 mag
>
> 2001 Nov. 25 12h UT 0.403 deg ( 24.2 arcmin)
> C/2002 E2 ( Snyder-Murakami ) 15h40m.8 -52o40' 12.5 mag
> IM Nor (NB) 15h39m.4 -52o19' 9.0-<20.0 mag
>
> 2001 Oct. 16 5h UT 0.261 deg ( 15.7 arcmin)
> C/2002 E2 ( Snyder-Murakami ) 13h14m.9 -61o08' 13.3 mag
> NN Cen (UGSS) 13h14m.3 -60o53' 13.2-17.5 mag
>
> 2001 Oct. 5 13h UT 0.434 deg ( 26.1 arcmin)
> C/2002 E2 ( Snyder-Murakami ) 12h26m.0 -62o21' 13.5 mag
> BP Cru (ELL+XPNG:) 12h26m.6 -62o46' 10.8-10.9 mag
>
> 2001 Oct. 4 22h UT 0.249 deg ( 14.9 arcmin)
> C/2002 E2 ( Snyder-Murakami ) 12h23m.0 -62o24' 13.5 mag
> BI Cru (ZAND) 12h23m.4 -62o38' 11.0-14.0 mag
>
> 2001 Sept.16 16h UT 0.910 deg ( 54.6 arcmin)
> C/2002 E2 ( Snyder-Murakami ) 10h53m.9 -62o57' 13.9 mag
> BZ Car (SRC) 10h54m.1 -62o03' 8.9-10.8 mag
>
> 2001 Sept. 7 5h UT 0.968 deg ( 58.1 arcmin)
> C/2002 E2 ( Snyder-Murakami ) 10h08m.1 -62o30' 14.0 mag
> S Car (M) 10h09m.4 -61o33' 4.5-9.9 mag
>
> 2001 Sept. 2 10h UT 0.399 deg ( 23.9 arcmin)
> C/2002 E2 ( Snyder-Murakami ) 09h45m.7 -62o07' 14.1 mag
> l Car (DCEP) 09h45m.2 -62o30' 3.3-4.2 mag
>
> 2001 Aug. 30 20h UT 0.951 deg ( 57.0 arcmin)
> C/2002 E2 ( Snyder-Murakami ) 09h34m.0 -61o52' 14.2 mag
> R Car (M) 09h32m.2 -62o47' 3.9-10.5 mag
>
> 2001 Aug. 7 4h UT 0.508 deg ( 30.5 arcmin)
> C/2002 E2 ( Snyder-Murakami ) 07h58m.0 -58o38' 14.7 mag
> V341 Car (L) 07h56m.8 -59o08' 6.2-7.1 mag
>
> --
> Seiichi Yoshida
> comet@aerith.net
> http://vsnet.aerith.net/
>
Return to Daisaku Nogami
vsnet-adm@kusastro.kyoto-u.ac.jp
VSNET Home Page