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(meteorobs) Leonids and Geminids 2001



The requirements for observations Leonids were poor for us.
From cloudinesses and mist Lm permanently varied (from 1m up to 4m).
I could confidently see meteors 1m and brighter.
All observable meteors belonged to a stream Leonid.

Visual Observing Form - Summary Report

Day: 18  Month: 11  Year: 2001
Begin: 19 h 07 m  End: 20 h 07 m  Teff: 1.00
Location:  long. 48°22'27"E    latit. 54°18'27"N
Town: Ulianovsk   Country: Russia
Observer: Sergey Shanov
Shower: LEO
Direction: 30 degrees to a east from zenith
 ------------------------------------------------------------------------
| N | Time (UT) | Mag.| Remarks
|---|-----------|-----|--------------------------------------------------
| 1 |   19:14   | - 5 | flight through the half-sky, orange, flash, train
| 2 |   19:25   | - 3 | very long, orange, flash, train
| 3 |   19:26   | - 1 | train
| 4 |   20:02   |   0 | orange, train
| 5 |   20:06   | + 1 |
 ------------------------------------------------------------------------
 
Nh = N / (dt * cos Z) = 5 / (1 * cos 83°,7) = 46 (for l = 236°,514)


The weather has not allowed to realize reliable observations.

In requirements of a urban mist was visible 14 Geminid (second magnitude and brighter).

Till 19:25 UT I did not see meteors, then they have begun to occur by groups, up to several meteors in one minute.

Taking into account requirements of observations, seems, that the stream was strong.

Visual Observing Form - Summary Report
Day: 13 Month: 12  Year: 2001   Begin: 19h 06m  End: 19h 51m
Location: long. 48° 22' 27"E  latit. 54° 18' 27"N
Town: Ulianovsk   Country: Russia
Observer: Sergey Shanov
Showers: GEM
 
 --------------------------------------------------------------
| Period (UT) |   Field    
| Teff |  F  | lm  | GEM | SPO | M |
|-------------|-------------|------|-----|-----|-----|-----|---|
| 19:06-19:51 | 80RA +20Dec
| 0.75 | 1.0 | 5.3 |  14 |   0 | C |
 --------------------------------------------------------------

 ---------------------------------------
| Shower | -2 | -1 |  0 | +1 | +2 | tot |
|--------|----|----|----|----|----|-----|
| GEM    |  1 |  3 |  1 |  3 |  6 |  14 |
 ---------------------------------------
 

Nh = N / (dt * cos Z) = 14 / (0,75 * cos 40°,2) = 24
ZHR = N / (dt * cos Z) * L

|  Date     |   Time (UT)   |   l°    | Nh | ZHR |

|13.12.2001 | 19 h 28,5 min | 261,841 | 24 |  88 |


 
Sergey Shanov
RUSSIA, Ulianovsk