Analyses of meteor activities over China

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Geminids 2004, 1st circular

1st Edition
Beijing Standard Time r=2.0 C<10
Day Time Sol_long Nind. nINT nGEM nSPO ZHR Err.
11 2303 259.930 2 1.67 015 17 43.55 10.89
12 0033 259.993 3 1.47 014 01 38.90 10.04
12 0223 260.071 4 5.66 093 48 30.87 3.18
12 0409 260.146 3 4.00 060 66 27.18 3.48
12 0530 260.233 1 1.00 012 12 28.94 8.03
13 0133 261.053 1 0.90 010 07 35.23 10.62
13 2207 261.925 3 1.81 075 22 150.61 17.28
13 2259 261.961 5 5.88 290 68 229.87 13.48
14 0000 262.004 8 4.30 253 57 236.75 14.85
14 0103 262.049 11 9.27 452 86 173.61 8.16
14 0152 262.084 8 5.92 382 108 171.37 8.76
14 0252 262.126 5 3.86 209 84 140.46 9.69
14 0359 262.173 3 1.95 140 85 143.98 12.13
14 0500 262.216 5 3.46 220 56 151.54 10.19
15 0445 263.223 1 1.50 011 15 37.58 10.85
Total Geminids: 2236
Total observe time: 52.65h
Observers: Yifei Wang (5.60h), Xiaoyun Ma (5.56h), Yanan Wan (3.84h), Benmu
Liu (3.67h), Yi Wang (3.67h), Jiaqing Yang (3.59h), Feng Chen (2.46h), Quanzhi
Ye (2.25h), Weiqi Li (2.20h), Hao Zheng (2.15h), Xun Yu (2.12h), Qiang Ma
(2.00h), Feng Xiao (1.75h), Tianjing Ouyang (1.48h), Huang Shi (1.45h), Ling
Chen (1.12h), Wei Zhao (0.98h), Hao Wu (0.90h), Jingyu Wang (0.72h), Tianfei
Ye (0.70h).

By Quanzhi Ye, December 19, 2004

Leonids 2004, 2nd circular

This result based on 9 observers, 23.64 hours and 204 Leonids, it could be the final version. Compare with IMC 3rd, we could find the rate are quite similar. r=2 used.

2nd Edition
Beijing Standard Time r=2.0 lm>4.0 F<2 H>15d
Day Time Sol_long Nind. nINT nLEO nSPO ZHR Err.
17 04:10 234.748 1 1.00 12 8 20.9 +- 5.8
17 04:57 234.790 1 0.53 3 7 12.3 +- 6.2
17 05:56 234.832 1 0.97 4 15 7.8 +- 3.4
18 01:08 235.631 1 0.47 2 5 32.9 +- 19.0
18 02:06 235.673 2 0.83 10 5 28.6 +- 8.6
18 04:24 235.758 4 3.78 37 37 24.8 +- 4.0
19 02:20 236.683 1 0.75 5 6 16.2 +- 6.6
19 04:02 236.766 5 4.72 41 40 17.5 +- 2.7
19 05:09 236.808 7 8.43 73 92 19.5 +- 2.1
20 04:00 237.775 1 1.00 10 10 22.1 +- 6.7
20 05:49 237.859 1 1.16 7 4 19.8 +- 7.0
Total Leonids: 204
Total observe time: 23.64h
Observers: Tianjin OUYANG (4.5h), Qiang MA (4.0h), Quanzhi YE (3.3h), Jin ZHU (2.4h), Xun YU (2.2h), Yu WANG (2.1h), Menglin ZHANG (1.6h), Wen ZHOU (1.5h), Huan MENG (0.63h).

By Quanzhi Ye, December 3, 2004

Leonids 2004, 1st circular

This is the first analysis of Leonids in China, so the result is not detailed.

Beijing Standard Time r=2.5 lm>4.0 F<2 H>15d
Day Time Sol_long Nind. nINT nLEO nSPO ZHR Err.
18 04:15 236.7792 2.07 2 23 22 42.8+-8.7
20 04:17 237.7884 1.25 2 12 12 59.2+-16.4
20 05:17 237.8304 2.58 3 28 33 38.9+-7.2
Total Leonids: 63
Total observed time: 5.9h
Observers: Jin ZHU(2.4h), Quanzhi YE(1.8h), Tianjin OUYANG(1.5h), Wen ZHOU(not used).

By Quanzhi YE, November 21, 2004.

Perseids 2004, 3th circular

This analysis based on 18 observers, 26.52 hours and 636 Perseids. I was more district at selecting data for the analysis, so some data are out these time, but the result is more fairy I think. r=2, and I wouldn't use the data if there wasn't three observers in a period, or C>10. Beijing Time (GMT+8) used.

Day Time Sol_long Nind. nINT nPER nSPO ZHR Err.
12 01:23 139.3005 6 4.45 64 23 60.3 +- 7.5
12 02:06 139.3292 6 3.90 61 14 65.8 +- 8.4
12 03:03 139.3672 5 4.50 38 17 42.2 +- 6.8
12 03:42 139.3932 4 2.55 49 12 66.0 +- 9.3
13 01:34 140.2680 3 3.22 128 21 140.3 +- 12.4
13 02:43 140.3140 5 4.75 152 62 98.2 +- 7.9
13 03:36 140.3494 3 3.15 144 26 128.9 +- 10.7
Observers: Quanzhi YE(3.37h) Gu CHAN(2.25h) Fan ZHANG(1.86h) Le JI(1.84h) Xu ZHANG(1.75h)
Shangfei LIU(1.60h) Wen ZHOU(1.53h) Yandong HU(1.50h) Li FENG(1.35h) Wei WANG(1.34h) Jiaqing YANG(1.32h) Yujiang CAI(1.26h) Jin ZHU(1.11h) Hao ZHENG(0.98h) Huan MENG(0.67h) Chen XU(not use) Chuan WANG(not use) Qiang MA(not use).

By Quanzhi Ye, October 3, 2004

Perseids 2004, 2nd circular

This result has been out on August 19, but due to some reason it's delay. Some mistakes have been correct, and more data have been added. It'll be the final result of Perseids 2004 in China.

Analyze by Quanzhi Ye, September 17, 2004.

Beijing Standard Time r=2.0 lm>4.0 F<2 H>15d
Day Time Sol_long Nind. nINT nPER nSPO ZHR Err.
11 03:00 138.405 2 1.5 15 3 39.8 +- 9.7
11 03:17 138.417 1 0.4 7 1 35.1 +- 12.4
11 03:45 138.435 2 0.7 5 2 40.0 +- 16.3
11 04:35 138.469 1 0.7 8 5 41.7 +- 13.9
12 01:20 139.289 6 3.7 46 22 57.5 +- 8.3
12 02:00 139.325 5 3.4 50 7 63.2 +- 8.8
12 02:50 139.360 5 4.5 52 17 62.7 +- 8.6
12 03:30 139.385 5 5.3 83 36 65.8 +- 7.2
12 23:40 140.200 2 1.8 15 8 81.5 +- 20.4
13 00:30 140.225 2 1.4 17 6 94.9 +- 22.4
13 01:30 140.265 3 3.1 125 21 136.9 +- 12.2
13 02:30 140.305 5 3.3 143 61 116.8 +- 9.7
13 03:30 140.345 4 3.8 122 23 95.8 +- 8.6
13 04:30 140.385 2 2.4 84 20 111.8 +- 12.1
Total Perseids: 772
Total observed time: 61.5h
Observers: Quanzhi YE (9.5h), Gu CHEN (5.0h), Le JI (2.7h), Fan ZHANG (1.9h), Xu ZHANG (1.8h), Yujiang CAI (1.8h), Shangfei LIU (1.6h), Wen ZHOU (1.5h), Yandong HU (1.5h), Li FENG (1.4h), Hao ZHENG (1.3h), Jiaqing YANG (1.3h), Wei WANG (1.3h), Jin ZHU (1.1h), Chen XU (1.0h), Huan MENG (0.7h), Chuan WANG (not use), Qiang MA (not use), Xiaoyun MA (not use).

Perseids 2004, 1st circular

Many new observers joining our team this time, I
recive 20 reports from 17 observers this time, and the
reports can nearly cover the nights of 11, 12 and 13.
Unfortunately the weather was not good in most part of
China when the rev-1 peak occured.

Beijing Standard Time (GMT+8) to be use.

Day Hour Nind. nINT nPER nSPO ZHR Err.
11 3.0 2 1.5 15 3 39.8 9.9
11 3.2 1 0.4 7 1 35.1 11.7
11 3.8 2 0.7 5 2 40.0 17.5
11 4.6 1 0.7 8 5 41.7 17.6
12 1.3 6 3.7 46 22 57.5 7.4
12 2.0 5 3.4 50 7 63.2 8.8
12 2.8 5 4.5 52 17 62.7 8.9
12 3.5 5 4.1 52 20 61.7 7.8
12 23.6 2 1.8 7 8 54.3 17.1
13 0.5 2 1.4 11 6 63.3 18.3
13 1.5 3 3.1 125 21 136.9 12.2
13 2.5 5 3.3 143 61 116.8 9.7
13 3.5 4 3.8 122 23 95.8 8.6
13 4.5 2 2.4 84 20 111.8 12.1
Total Perseids: 727
Total observed time: 60.3h
Observers: Quanzhi YE (9.5h), Gu CHEN (5.0h), Le JI (2.7h), Fan ZHANG (1.9h), Xu ZHANG (1.8h), Yujiang CAI (1.8h), Shangfei LIU (1.6h), Wen ZHOU (1.5h), Yandong
HU (1.5h), Li FENG (1.4h), Hao ZHENG (1.3h), Jiaqing YANG (1.3h), Wei WANG (1.3h), Jin ZHU (1.1h), Chen XU (1.0h), Huan MENG (0.7h), Chuan WANG (not use).
Nind.: the number of observers
nINT : observed period (hr)
sPER : the number of Perseid meteors
ZHR :average ZHR with population index = 2.0
Err. : ZHRave/sqrt(PER)
----------------------------
By Quanzhi YE
August 17, 2004.

Geminids 2003

According to the observations from other countries, we are able to find out there are two peaks in Geminids 2003, at 14th 2h and 15th 2-5h (Beijing Standard Time, GMT+8h).

Thanks to these observers who offer his observations.

Rui ZHENG, Yandong HU, Quanzhi YE, Jin MA, Steed_Joy.

DD.H ZHR Err
14.0 83.14534 9.181867
14.7 207.1413 19.48621
14.9 132.6815 14.83424
15.1 119.3941 13.18488
15.4 125.1616 13.26711
16.1 90.48209 26.11993



By Quanzhi Ye
2004.8.1

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