(meteorobs) Re: meteorobs Digest, Vol 4, Issue 63

Mon Aug 23 02:26:40 EDT 2004


> -----Original Message-----
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> Ö÷Ìâ: meteorobs Digest, Vol 4, Issue 63
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> Today's Topics:
> 
>    1. 	Fw: Fireball Report August 10, 2004 9pm-11pm, south visitor
>       center	of Grand Canyon's south rim in Arizona, USA (Mark Davis)
>    2. Re: Fw: Fireball Report August 10, 2004 9pm-11pm,	south
>       visitor center of Grand Canyon's south rim in Arizona, USA (Ed Majden)
>    3. Preliminary results from Belgian observers (Geert Barentsen)
>    4. 2004 PER Form Tian jin China (19/20)  (ÂíÇ¿)
>    5. 2004 PER Form Tianjin China (18/19)   (ÂíÇ¿)
>    6. Re: 2004 PER Form Tianjin China (18/19) (tom6740)
> 
> 
> ----------------------------------------------------------------------
> 
> Message: 1
> Date: Sat, 21 Aug 2004 20:31:50 -0400
> From: "Mark Davis" <meteors at comcast.net>
> Subject: (meteorobs) 	Fw: Fireball Report August 10, 2004 9pm-11pm,
> 	south visitor center	of Grand Canyon's south rim in Arizona, USA
> To: "Meteor Observing List" <meteorobs at meteorobs.org>
> Message-ID: <011b01c487e4$35ca4c40$0100a8c0 at CC894902A>
> Content-Type: text/plain;	charset="Windows-1252"
> 
> ----- Original Message ----- 
> From: "NAMN Fireball Reports" <namn at namnmeteors.org>
> Sent: Friday, August 20, 2004 4:40 PM
> Subject: Fireball Report August 10, 2004 9pm-11pm, south visitor center of
> Grand Canyon's south rim in Arizona, USA
> 
> 
> ----
> Your Town/State/Country? Spearfish, SD USA
> 
> 
> Date and Time? August 10, 2004 9pm-11pm
> 
> 
> What compass direction did the fireball appear from? north
> 
> 
> What compass direction did the fireball DISAPPEAR from? west
> 
> 
> How long, in seconds, were you able to see it in the sky? ~ 15
> 
> 
> How many degrees off the horizon was it when it APPEARED?
> (As a reference, a closed fist held at arm's length is
> approximately 10 degrees.)
>   70?
> 
> 
> How many degrees off the horizon was it when it DISAPPEARED? 20?
> 
> 
> How bright did it appear?
> Like a star, Venus, the Moon, or the setting Sun?
>   moon
> 
> 
> Did it have any color(s)? white
> 
> 
> Did it appear to fall apart as it went by? What did that look like?
>   disappeared into the trees followed in 2 seconds by an explosion
> 
> 
> Did it leave a persistent streak in the sky after it was gone?
> How long did that last?
>   yes, around 5-10 seconds
> 
> 
> How fast did it move? Use a 1 to 5 scale, 1 being
> VERY slow, and 5 being extremely quick.
>   2-3
> 
> 
> Did you hear a sound?
> If yes, what was the time delay from sighting to sound?
>   no
> 
> 
> What is the closest Town/State to where you saw the fireball?
>   south visitor center of Grand Canyon's south rim in Arizona, USA
> 
> 
> Please put any additional remarks, sketches, drawings, etc. below:
>   I'm sorry that I can't be more accurate, but we were camping last week in
> the Kaibab Forest just south of the Grand Canyon in Arizona.  Also, we were
> getting ready for bed so we had no paper or pens at hand to record times,
> constellations, etc. and the next morning we couldn't remember exact times
> and locations.  I would like to know a little more about this fireball
> (bolide?) if possible since it was my first one and amazing.  Where did it
> start (I first saw it when it entered my field of view) and where did it
> end?  Did it break up in the air (my husband saw the explosion as a
> reflection in our truck's window even though it was behind the trees)?  Did
> it reach land and/or leave behind any meteorites?  How far away was it when
> it exploded (i.e., over what town or section of highway)?  Anything else
> that might be interesting but that I did not think to ask.  Thank you for
> any information that you can supply.
> 
> P.S.  We forgot to ask at the Grand Canyon if anyone else had seen and
> reported anything (the fire station attentant perhaps).
> 
> 
> ------------------------------
> 
> Message: 2
> Date: Sat, 21 Aug 2004 18:41:47 -0700
> From: Ed Majden <epmajden at shaw.ca>
> Subject: Re: (meteorobs) Fw: Fireball Report August 10, 2004 9pm-11pm,
> 	south visitor center of Grand Canyon's south rim in Arizona, USA
> To: Global Meteor Observing Forum <meteorobs at meteorobs.org>
> Message-ID: <BD4D47EB.14B85%epmajden at shaw.ca>
> Content-Type: text/plain; charset=US-ASCII
> 
> on 8/21/04 17:31, Mark Davis at meteors at comcast.net wrote:
> 
> > ----- Original Message -----
> > From: "NAMN Fireball Reports" <namn at namnmeteors.org>
> > Sent: Friday, August 20, 2004 4:40 PM
> > Subject: Fireball Report August 10, 2004 9pm-11pm, south visitor center of
> > Grand Canyon's south rim in Arizona, USA
> > 
> > 
>     I see reports like this all the time.  I don't really understand why
> amateur astronomers, campers etc, don't have an adequate kit with them like
> a sighting compass, a map, and possibly an angle measuring device like a
> clinometer or builders roof slope measuring device.  That latter costs about
> $5.00 from building suppliers.  A GPS would be nice also but a good map will
> also work.  With the above you can take serious measurements that are useful
> to a fireball investigator.  Accurate time is also important.
>     With a minimum investment you can assemble a "Fireball Kit" that will
> provide useful scientific data.  It will also help you, should you get lost
> on outdoor outings!
> 
> Ed Majden
> Sandia Bolide Detection Station
> Courtenay, B.C.  Canada.
> 
> 
> ------------------------------
> 
> Message: 3
> Date: Sun, 22 Aug 2004 04:25:21 +0200
> From: Geert Barentsen <geert.barentsen at pandora.be>
> Subject: (meteorobs) Preliminary results from Belgian observers
> To: meteorobs at meteorobs.org
> Message-ID: <6.1.0.6.2.20040822012608.030573c8 at in.telenet.be>
> Content-Type: text/plain; charset="iso-8859-1"; format=flowed
> 
> Belgian observers from the Urania observatory observed the Perseids from 
> different locations in Europe (eastern France, southern France and 
> Romania).  Data was gathered throughout August 10-16; approx. 200 effective 
> hours by 20 observers. Most observers experienced clear skies during the 
> maximum night!  Data will be submitted soon, after a final double-double-check.
> 
> 
> Some early impressions:
> 
> - Our data confirms the IMO circular; a short peak was seen around 21UT 
> (approx. 2x normal activity)... The peak is clearly present in the 5-minute 
> intervals of all observers, and is not the result of a big/unreliable 
> correction factor caused by the low radiant elevation (approx 25?at 21UT 
> in eastern France).
> 
> - Additional features (e.g. midnight 11-12) and high activity in general 
> were noticed.
> 
> - The 21UT peak may have been dominated by weak meteors. I did some r-value 
> calculations tonight (hence the reason why I'm not sleeping at 4:30 am), 
> and noticed very low population index values near the 21UT peak. Note that 
> the used dataset and technique (log10 + linear fit) is definitly not 
> suitable to draw conclusions, but I do expect the 21UT peak to become even 
> more clear in a global analysis that takes into account the variation of 
> the population index for ZHR determination. (Do notice: I'm a newbie in 
> this matter, not an expert).
> 
> 
> Kind regards,
> Geert Barentsen
> 
> 
> 
> 
> 
> 
> 
> 
> 
> 
> 
> ------------------------------
> 
> Message: 4
> Date: Sun, 22 Aug 2004 22:41:11 +0800 (CST)
> From: "ÂíÇ¿"<meteorobs at people.com.cn>
> Subject: (meteorobs) 2004 PER Form Tian jin China (19/20) 
> To: visual at imo.net
> Cc: meteorobs at meteorobs.org
> Message-ID: <mc959177775888.11568 at mail03>
> Content-Type: text/plain
> 
> 
> 
> Visual Observing Form - Summary Report
> Day:19/20 Month:8 Year:2004 Begin: 18h00m (UT) End: 19h00m(UT)
> 
> Location long: 117d 27m 02s  latit: 39d 18m 01s height: 10m
> 
> Site: Qilihai, Tianjin Country: China
> Observer: Qiang MA 
> Surname (family name) with CAPITAL LETTERS; only SINGLE PERSONS
> 
> Showers:
>  -------------------------------------------------------------------------
> | Shw |alpha|delta| Shw |alpha|delta| Shw  |alpha|delta| Shw  |alpha|delta|
> |-------------------------------------------------------------------------|
> | PER | 056 | +59 | NIA | 326 | -06 | KCG  | 286 | +59 |      |     |     |
>  -------------------------------------------------------------------------
> 
> | Period  |Field  |Teff| F | lm | PER| NIA| KCG| ___| ___| ___| ___|Spor|
>   |  (UT)   |RA  Dec|  h |   | m  |M| N|M| N|M| N|M| N|M| N|M| N|M| N|M| N|
>   |-----------------------------------------------------------------------|
>  1|1800-1900|30|+30 |1.00|1.0|6.14|c|3 |c|1 |c|3 | |  | |  | |  | |  |c|8 |
>    -----------------------------------------------------------------------
> -------------------------------------------------------------------------
> |Shower  |-6|-5|-4|-3| -2| -1 |  0 | +1 | +2 | +3 | +4 | +5 | +6 | +7| tot|
> |--------|--|--|--|--|---|----|----|----|----|----|----|----|----|---|----|
> |PER     | 0| 0| 0| 0| 0 |  0 |  1 |  1 |  0 |  1 | 0  | 0  | 0  | 0 | 3  |
> |--------|--|--|--|--|---|----|----|----|----|----|----|----|----|---|----|
> |NIA     | 0| 0| 0| 0| 0 |  0 |  0 |  0 |  0 |  1 | 0  |  0 |  0 | 0 | 1  |
> |--------|--|--|--|--|---|----|----|----|----|----|----|----|----|---|----|
> |KCG     | 0| 0| 0| 0| 0 |  0 |  0 |  0 |  1 |  0 | 1  |  1 | 0  | 0 | 3  |
> |--------|--|--|--|--|---|----|----|----|----|----|----|----|----|---|----|
> |spor.   | 0| 0| 0| 0| 1 |  0 |  0 |  3 |  0 |  1 | 3  |  0 |  0 | 0 | 8  |
> 
> Reverse of the Visual Observing Form
> 
> Interval from 1800 to 1900
> 
>  -----------------------------------------------
> |Time   | Nr | N  | lm |Time   | Nr | N  | lm |
> |---------------------------------------------|
> | 1800  | 6  | 10 |6.14| 1900  | 6  | 10 |6.14| 
> -----------------------------------------------
> Mean limiting magnitude Lm: 6.14(same as on summary report)
> 
>  -------------------------------------------         ----------------
> | Obscured Field | %  | Obscured Field | %  |       |      Breaks    |
> |-------------------------------------------|       |----------------|
> | 18:00to 19:00  |  0 | _____ to _____ | __ |       |      0         |
>  -------------------------------------------         ----------------
>  K= 0, F=1/(1-K)= 1  (same as on summary report)
> 
> Time for plotting: 0 sec/meteor, 0 m total, Breaks: 0 m total.
> Net observed time Teff= 60 m = 1.00 h (same as on summary report.
> Detail Information for observed meteors:
> 
> # TIME(UT) MAG VEL. COLOR SHOWER TRAIN MAP ACCURACY 
> --------------------------------------------------------------------- 
> 
> 1  1802     1   3   w    SPO
> 2  1805     5   4   w    KCG
> 3  1811     3   3   w    SPO
> 4  1813     3   4   w    PER
> 5  1813     1   3   w    SPO
> 6  1822     4   3   w    KCG
> 7  1824     1   5   w    PER
> 8  1826     4   4   w    SPO
> 9  1831     0   3   w    PER
> 10 1843     4   4   w    SPO
> 11 1847     2   4   w    KCG
> 12 1848     4   5   w    SPO
> 13 1848     3   4   w    NIA
> 14 1855     1   4   w    SPO
> 15 1859    -2   4   w    SPO
> 
> VELOCITY (VEL.) SCALE: 
> 0 = Stationary 
> 1 = Very Slow 
> 2 = Slow 
> 3 = Medium 
> 4 = Fast 
> 5 = Very Fast 
> 
> --------------------------------------------------------------------- 
> REMARKS: 
> 
> --------------------------------------------------------------------- 
> <END OF REPORT> 
> 
> 
> 
> -------------------------------------------------------------
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> 
> 
> ------------------------------
> 
> Message: 5
> Date: Sun, 22 Aug 2004 22:47:14 +0800 (CST)
> From: "ÂíÇ¿"<meteorobs at people.com.cn>
> Subject: (meteorobs) 2004 PER Form Tianjin China (18/19)  
> To: meteorobs at meteorobs.org
> Message-ID: <me959177775285.03692 at mail03>
> Content-Type: text/plain
> 
> hi! that day is super clear skys!!!
> we are so happy!!!
> 
> Visual Observing Form - Summary Report
> Day:18/19 Month:8 Year:2004 Begin: 17h00m (UT) End: 18h00m(UT)
> 
> Location long: 117d 27m 02s  latit: 39d 18m 01s height: 10m
> 
> Site: Qilihai, Tianjin Country: China
> Observer: Qiang MA 
> Surname (family name) with CAPITAL LETTERS; only SINGLE PERSONS
> 
> Showers:
>  -------------------------------------------------------------------------
> | Shw |alpha|delta| Shw |alpha|delta| Shw  |alpha|delta| Shw  |alpha|delta|
> |-------------------------------------------------------------------------|
> | PER | 055 | +59 | NIA | 325 | -06 | KCG  | 286 | +59 |      |     |     |
>  -------------------------------------------------------------------------
> | Period  |Field  |Teff| F | lm | PER| NIA| KCG| ___| ___| ___| ___|Spor|
>   |  (UT)   |RA  Dec|  h |   | m  |M| N|M| N|M| N|M| N|M| N|M| N|M| N|M| N|
>   |-----------------------------------------------------------------------|
>  1|1700-1800|30|+30 |1.00|1.0|6.14|c|2 |c|1 |c|1 | |  | |  | |  | |  |c|6 |
>    -----------------------------------------------------------------------
> -------------------------------------------------------------------------
> |Shower  |-6|-5|-4|-3| -2| -1 |  0 | +1 | +2 | +3 | +4 | +5 | +6 | +7| tot|
> |--------|--|--|--|--|---|----|----|----|----|----|----|----|----|---|----|
> |PER     | -| -| -| -| - |  - |  - |  - |  1 |  1 | -  | -  | -  | - | 2  |
> |--------|--|--|--|--|---|----|----|----|----|----|----|----|----|---|----|
> |NIA     | -| -| -| -| - |  - |  - |  - |  1 |  - | -  |  - |  - | - | 1  |
> |--------|--|--|--|--|---|----|----|----|----|----|----|----|----|---|----|
> |KCG     | -| -| -| -| - |  - |  - |  - |  - |  1 |  - | -  | -  | - | 1  |
> |--------|--|--|--|--|---|----|----|----|----|----|----|----|----|---|----|
> |spor.   | -| -| -| -| - |  - |  - |  1 |  2 |  3 |  - |  - |  - | - | 6  |
> 
> Reverse of the Visual Observing Form
> 
> Interval from 1700 to 1800
> 
>  -----------------------------------------------
> |Time   | Nr | N  | lm |Time   | Nr | N  | lm |
> |---------------------------------------------|
> | 1700  | 6  | 10 |6.14| 1800  | 6  | 10 |6.14| 
> -----------------------------------------------
> Mean limiting magnitude Lm: 6.14(same as on summary report)
> 
>  -------------------------------------------         ----------------
> | Obscured Field | %  | Obscured Field | %  |       |      Breaks    |
> |-------------------------------------------|       |----------------|
> | 17:00to 18:00  |  0 | _____ to _____ | __ |       |      0         |
>  -------------------------------------------         ----------------
>  K= 0, F=1/(1-K)= 1  (same as on summary report)
> 
> Time for plotting: 0 sec/meteor, 0 m total, Breaks: 0 m total.
> Net observed time Teff= 60 m = 1.00 h (same as on summary report.
> 
> Detail Information for observed meteors:
> 
> # TIME(UT) MAG VEL. COLOR SHOWER TRAIN MAP ACCURACY 
> --------------------------------------------------------------------- 
> 
> 1  1711     3   4    w    SPO
> 2  1721     2   5    w    SPO
> 3  1726     3   3    w    SPO
> 4  1727     2   5    w    PER
> 5  1728     2   4    w    SPO
> 6  1745     3   4    w    SPO
> 7  1746     2   3    w    NIA
> 8  1750     3   5    w    PER
> 9  1759     3   4    w    SPO
> 10 1759     3   4    w    KCG
> 
> VELOCITY (VEL.) SCALE: 
> 0 = Stationary 
> 1 = Very Slow 
> 2 = Slow 
> 3 = Medium 
> 4 = Fast 
> 5 = Very Fast 
> 
> --------------------------------------------------------------------- 
> REMARKS: 
> 
> --------------------------------------------------------------------- 
> <END OF REPORT> 
> 
> 
> -------------------------------------------------------------
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> 
> 
> ------------------------------
> 
> Message: 6
> Date: Sun, 22 Aug 2004 15:01:14 -0000
> From: "tom6740" <tom6740 at yahoo.com.cn>
> Subject: Re: (meteorobs) 2004 PER Form Tianjin China (18/19)
> To: Global Meteor Observing Forum <meteorobs at meteorobs.org>
> Message-ID: <cgacfq+jkfg at eGroups.com>
> Content-Type: text/plain; charset=ISO-8859-1
> 
> Again, please change your name into English or the friends from 
> other countries may read your name uncorrectly.
> And it may be Chinglish...
> 
> -Quanzhi
> 
> --- In meteorobs at yahoogroups.com, "ÂíÇ¿"<meteorobs at p...> wrote:
> > hi! that day is super clear skys!!!
> > we are so happy!!!
> > 
> > Visual Observing Form - Summary Report
> > Day:18/19 Month:8 Year:2004 Begin: 17h00m (UT) End: 18h00m(UT)
> > 
> > Location long: 117d 27m 02s  latit: 39d 18m 01s height: 10m
> > 
> > Site: Qilihai, Tianjin Country: China
> > Observer: Qiang MA 
> > Surname (family name) with CAPITAL LETTERS; only SINGLE PERSONS
> > 
> > Showers:
> >  ------------------------------------------------------------------
> -------
> > | Shw |alpha|delta| Shw |alpha|delta| Shw  |alpha|delta| Shw  
> |alpha|delta|
> > |------------------------------------------------------------------
> -------|
> > | PER | 055 | +59 | NIA | 325 | -06 | KCG  | 286 | +59 |      
> |     |     |
> >  ------------------------------------------------------------------
> -------
> > | Period  |Field  |Teff| F | lm | PER| NIA| KCG| ___| ___| ___| 
> ___|Spor|
> >   |  (UT)   |RA  Dec|  h |   | m  |M| N|M| N|M| N|M| N|M| N|M| 
> N|M| N|M| N|
> >   |----------------------------------------------------------------
> -------|
> >  1|1700-1800|30|+30 |1.00|1.0|6.14|c|2 |c|1 |c|1 | |  | |  | |  | 
> |  |c|6 |
> >    ----------------------------------------------------------------
> -------
> > -------------------------------------------------------------------
> ------
> > |Shower  |-6|-5|-4|-3| -2| -1 |  0 | +1 | +2 | +3 | +4 | +5 | +6 | 
> +7| tot|
> > |--------|--|--|--|--|---|----|----|----|----|----|----|----|----|-
> --|----|
> > |PER     | -| -| -| -| - |  - |  - |  - |  1 |  1 | -  | -  | -  
> | - | 2  |
> > |--------|--|--|--|--|---|----|----|----|----|----|----|----|----|-
> --|----|
> > |NIA     | -| -| -| -| - |  - |  - |  - |  1 |  - | -  |  - |  - 
> | - | 1  |
> > |--------|--|--|--|--|---|----|----|----|----|----|----|----|----|-
> --|----|
> > |KCG     | -| -| -| -| - |  - |  - |  - |  - |  1 |  - | -  | -  
> | - | 1  |
> > |--------|--|--|--|--|---|----|----|----|----|----|----|----|----|-
> --|----|
> > |spor.   | -| -| -| -| - |  - |  - |  1 |  2 |  3 |  - |  - |  - 
> | - | 6  |
> > 
> > Reverse of the Visual Observing Form
> > 
> > Interval from 1700 to 1800
> > 
> >  -----------------------------------------------
> > |Time   | Nr | N  | lm |Time   | Nr | N  | lm |
> > |---------------------------------------------|
> > | 1700  | 6  | 10 |6.14| 1800  | 6  | 10 |6.14| 
> > -----------------------------------------------
> > Mean limiting magnitude Lm: 6.14(same as on summary report)
> > 
> >  -------------------------------------------         --------------
> --
> > | Obscured Field | %  | Obscured Field | %  |       |      
> Breaks    |
> > |-------------------------------------------|       |--------------
> --|
> > | 17:00to 18:00  |  0 | _____ to _____ | __ |       |      
> 0         |
> >  -------------------------------------------         --------------
> --
> >  K= 0, F=1/(1-K)= 1  (same as on summary report)
> > 
> > Time for plotting: 0 sec/meteor, 0 m total, Breaks: 0 m total.
> > Net observed time Teff= 60 m = 1.00 h (same as on summary report.
> > 
> > Detail Information for observed meteors:
> > 
> > # TIME(UT) MAG VEL. COLOR SHOWER TRAIN MAP ACCURACY 
> > -------------------------------------------------------------------
> -- 
> > 
> > 1  1711     3   4    w    SPO
> > 2  1721     2   5    w    SPO
> > 3  1726     3   3    w    SPO
> > 4  1727     2   5    w    PER
> > 5  1728     2   4    w    SPO
> > 6  1745     3   4    w    SPO
> > 7  1746     2   3    w    NIA
> > 8  1750     3   5    w    PER
> > 9  1759     3   4    w    SPO
> > 10 1759     3   4    w    KCG
> > 
> > VELOCITY (VEL.) SCALE: 
> > 0 = Stationary 
> > 1 = Very Slow 
> > 2 = Slow 
> > 3 = Medium 
> > 4 = Fast 
> > 5 = Very Fast 
> > 
> > -------------------------------------------------------------------
> -- 
> > REMARKS: 
> > 
> > -------------------------------------------------------------------
> -- 
> > <END OF REPORT> 
> > 
> > 
> > -------------------------------------------------------------
> > ¾Û½¹ÑÅµä ¶ÌÐÅ¿´°ÂÔË ·¢ËÍ701µ½1510¶©ÔÄ£¨ÁªÍ¨ÓÃ»§·¢ËÍ701µ½9510£©
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> > 
> > 
> > _______________________________________________
> > Mailing list meteorobs
> > meteorobs at m...
> > http://lists.meteorobs.org/mailman/listinfo/meteorobs
> 
> 
> ------------------------------
> 
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> End of meteorobs Digest, Vol 4, Issue 63
> ****************************************


Excuse me, who else is continuing observing PER these days? 
what is new?
-------------------------------------------------------------
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