Perseids 1998: visual observations
team Public Observatory Twente (VST/EPS-Lattrop)
Observer: Johannink, Carl (IMO-code JOHCA)
Year: 1998
Observing site: Lat.: Lon.:
Gronau (Ger.) 52 13' 07 01'
Night: Time (UT): Center: Stream: TotalTeff: LM: Remarks:
January 03/04 03:10 - 04:00 10h / 80 d9 B ; 1 Com ; 2 HB(?) ; 3 15. 0.83 5.5 clouds > 03:55 UT
Observer: Johannink, Carl (IMO-code JOHCA)
Year: 1998
Observing site: Lat.: Lon.:
Gronau (Ger.) 52 13' 07 01'
May 03/04 00:30 - 02:00 19h / 70 d1 A ; 1 Sco ; 13 sp. 15. 1.50 6.0 a few small ci-clo
LM = 5.2 at 02:00 UT
Observer: Johannink, Carl (IMO-code JOHCA)
Year: 1998
Observing site: Lat.: Lon.:
Lattrop (Neth) 52 26' 06 58'
July 21/22 21:30 - 22:45 20h / 70 d1 P ; 1 o Cyg ; 7 sp. 9.1.10 6.1 plotting!
22:45 - 23:50 1 P ; 1 o Cyg ; 2 iA ; 1C 11.1.00 6.2 plotting!
5 sp
The results of the Perseids 21/22 july 1998,
from the Public Observatory Lattrop Netherlands.
Date : 21/22 july
Observer : Arnold Tukkers
Code : ATL
Obs. time : 21h30m - 00h00m.
T.eff : 2h30m
Total observed meteors: 24
Place: Lattrop, 52.24 - 06.52
UT T-eff Persei. Capricor. Aquar. Spor.
21h30m - 22h30m 1 1 0 1 7
22h30m - 23h00m 1 1 2
23h00m - 23h30m 1 1 1 5
23h30m - 00h00m 1 1 2 2
-------------------------------------------------------------------
Total: 3 2 3 16
Observer: Johannink, Carl (IMO-code JOHCA)
Year: 1998
Observing site: Lat.: Lon.:
Lattrop (Neth) 52 26' 06 58'
July 22/23 21:45 - 22:45 20h / 70 d2C ; 5 sp 7.0.92 5.7 plotting!
3/8 cirrus
22:45 - 23:45 2P ; 3C ; 6sp 11.0.92 6.1 plotting!
23:45 - 00:53 3P ; 1 o Cyg ; 1dA ; 6sp 11.1.03 6.2 plotting!
The results of the Perseids 22/23 july 1998,
from the Public Observatory Lattrop Netherlands.
Date : 221/23 july
Observer : Arnold Tukkers
Code : ATL
Obs. time : 22h15m - 00h15m.
T.eff : 2h15m
Total observed meteors: 35
Place: Lattrop, 52.24 - 06.52
UT T-eff Persei. Capricor. Spor.
22h15m - 22h45m 0.5 2 2 2
22h45m - 23h15m 0.5 2 2 5
23h15m - 23h45m 0.5 1 1 6
23h45m - 00h15m 0.5 1 11
------------------------------------------------------
Total: 6 5 24
Observer: Johannink, Carl (IMO-code JOHCA)
Year: 1998
Observing site: Lat.: Lon.:
Denekamp (Neth) 52 22' 07 01'
July 24/25 22:10 - 22:40 16h / 50 deg 1P ; 1C ; 1 sp 3. 0.50 5.5 plotting; totally
clouded at 22:45 UT
23:38 - 01:20 7P ; 2 o Cyg ; 3 dA ; 1C ; 7 sp 20. 1.63 6.0 plotting; first 15 min. 2/8 cu;
LM = 5.5 at 01:15 UT
The results of the Perseids 24/25 july 1998,
from the Public Observatory Lattrop Netherlands.
Date : 24/25 july
Observer : Arnold Tukkers
Code : ATL
Obs. time : 22h15m - 01h15m (pause 22h45m/23h45m clouds)
T.eff : 2 h.
Total observed meteors: 32
Place: Denekamp 52.22 - 7.00.
Lm: 5.7
UT T-eff Persei. Capricor. Aquar. 1997BR Spor.
22h15m - 22h45m 0.5 1 1 2
22h45m - 23h45m 0
23h45m - 00h15m 0.5 5 1 5
00h15m - 00h45m 0.5 1 1 4
00h45m - 01h15m 0.5 2 1 2 6
---------------------------------------------------------------------
Total: 9 2 3 1 17
I saw the 1997BR meteor (magnitude 3) left from Deneb and the meteor
flew very slow from Cygnus trough m15 in Pegasus and it stopped in
Capricornes.
Observer: Johannink, Carl (IMO-code JOHCA)
Year: 1998
Observing site: Lat.: Lon.:
Lattrop (Neth) 52 26' 06 58'
July 25/26 21:55 - 23:25 20h / 70 deg 4P ; 3dA ; 1 o Cyg ; 9 sp 17. 1.42 5.9
LM fluctuating between 5.8 and 6.2 after 23:00;
after 23:25 rapid <5.5 at least until 00:30 UT
The results of the Perseids 25/26 july 1998,
from the Public Observatory Lattrop Netherlands.
Date : 25/26 july
Observer : Arnold Tukkers
Code : ATL
Obs. time : 22h00m - 00h30m UT
T.eff : 2h30m.
Total observed meteors: 27
Place: Lattrop 52.22/7.00
Lm: 5.1
UT T-eff Per. Aqua. Capr. aCyg. Spor.
22h00m - 22h30m 0.5 5
22h30m - 23h00m 0.5 1 3
23h00m - 23h30m 0.5 2 1 1 6
23h30m - 00h00m 0.5 1 1 1
00h00m - 00h30m 0.5 3 2
-----------------------------------------------------------
Total: 6 2 1 1 17
Date : July 30/31
Observer: Johannink, Carl (IMO-code JOHCA)
Year : 1998
Observing site: Lat.: Lon.:
Gronau (Ger.) 52 13' 07 01'
Time(UT) LM: Stream: Remarks:
22:35-23:00 6.0 3 C ; 1 dA ; 2 sp clouds after 23:00 UT
23:45-00:00 6.0 1 dA ; 1 P clouded after 00:00 UT
Observer : Johannink, Carl (IMO-code JOHCA)
Date : August 02/03, 1998
Observing site: Public Observatory, Lattrop, Netherlands
Coordinates : Latitude: 52 26' Longitude: 06 58'
Center : 20h / 70 deg
Time (UT) Streams: Tot. Teff LM Method
22:45 - 23:45 8P ; 4C ; 2 dA ; 1 o Cyg ; 2 sp 17. 0.98 5.5 plotting
LM increasing to 6.0 ;
2/8 clouds between 23:30 - 23:40
23:45 - 00:45 6P ; 1C ; 2 dA ; 1 kC ; 11 sp 21. 0.92 6.2 plotting
00:45 - 02:03 10P ; 1C ; 2 dA ; 3 iA ; 1 o Cyg ; 8 sp 25. 1.23 6.1 plotting
LM decreasing to 5.0 at 02:03
