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(meteorobs) early URS observation
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NAMN VISUAL SUMMARY REPORT
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DATE: Dec. 20/21, 2000 BEGIN: 13:55 UT END: 21:43 UT
OBSERVER: Jin Zhu (ZHUJI)
LOCATION: Long: 117 d 34' 42" East; Lat: 40 d 23' 47" North
Place: Xinglong, Hebei, CHINA Elevation: 860 m.
RECORDING METHOD: Voice Recorder
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OBSERVED SHOWERS: 3-letter code; radiant position; radiant diameter
URS ; RA 14h 30m DEC +76d; 10d
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OBSERVING PERIODS: 0 = none seen; / = shower not watched.
PERIOD(UT) FIELD Teff F LM URS SPO
13:55-15:01 RA 05h 00m DEC +80d 1.10 1.00 5.7 1 6
18:22-19:25 RA 06h 00m DEC +70d 1.05 1.00 5.8 2 14
20:28-21:43 RA 05h 30m DEC +70d 1.00 1.00 5.8 2 23
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TOTALS 3.15 5 43 (48)
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MAGNITUDE DISTRIBUTIONS:
SHOWER -7 -6 -5 -4 -3 -2 -1 0 +1 +2 +3 +4 +5 +6 TOTAL
URS 0 0 0 0 0 0 0 1 0 1 2 1 0 0 5
SPO 0 0 0 0 0 0 1 2 3 9 19 8 1 0 43
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Total 0 0 0 0 0 0 1 3 3 10 21 9 1 0 48
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SKY OBSCURED:
Percentage(%) Duration (UT)
0 13:55-15:01
0 18:22-19:25
0 20:28-21:43
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DEAD TIME: NONE
BREAKS: 20:31-20:34, 20:37-20:50
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LIMITING MAGNITUDE:
STAR STAR
TIME AREA COUNT LM
13:57 17 12 5.91
14:00 7 9 5.29
14:00 17 12 5.91
14:11 7 10 5.36
14:23 7 11 5.42
14:57 17 11 5.64
15:00 7 11 5.42
15:01 17 11 5.64
18:24 17 11 5.64
18:28 19 5 5.50
18:30 19 6 5.81
18:31 17 11 5.64
18:41 19 6 5.81
18:41 17 11 5.64
19:01 17 12 5.91
19:01 19 6 5.81
19:09 19 6 5.81
19:09 17 12 5.91
19:23 17 11 5.64
19:23 19 6 5.81
20:34 3 13 5.79
20:36 16 6 5.64
20:53 19 5 5.50
20:53 16 6 5.64
20:53 17 11 5.64
20:56 3 13 5.79
21:13 3 13 5.79
21:14 17 10 5.46
21:15 16 8 5.85
21:20 16 9 5.88
21:26 16 8 5.85
21:28 3 11 5.66
21:29 17 10 5.46
21:33 3 12 5.72
21:42 3 13 5.79
21:43 17 10 5.46
MEAN LIMITING MAGNITUDE: 5.8
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METEOR DATA:
(see Original Records)
VELOCITY (VEL.) SCALE:
0 = Stationary
1 = Very Slow
2 = Slow
3 = Medium
4 = Fast
5 = Very Fast
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REMARKS:
1. #32 and #33 appeared at the same position, with almost same arc,
similar appearance (brightness and train), with a little time difference.
2. #35 and #36 appeared at exactly the same time with same velocity and
similar brightness, but in different direction. Juts like '/ \' in front
of me (downward), and the relavent radiant is around RA 10h30m, DEC +45.
(error: +/- 20 degrees? - I'm not familiar with those constellations.)
3. At 20:37, I noted a weak flash in Bootes, when I turned my head to my
right, I saw a second flash of -3. Then there was a third weaker flash.
I think that it must be a satellite. What unusual is that my voice recorder
(a digital recorder which records the voices on disk and can transfer to
computer easily) seemed out of function after that time, and all keys
were out of work, so I had to take off the batteries to 'reboot'. When
examing those files, I found that it recorded some very strange sounds
at that time, and also similar sounds in two files between 20:31-20:34.
4. It seems that the SPOs are a little more than what the background
should be in average under such LM. During the observations, it seems
to me that there might be a radiant from Auriga, and there were another
3 meteors came from somewhere in middle of Capella and Polaris during
a very short period of time. The URS might also have another radiant
near RA 15h05m, Dec 68d.
5. I didn't note faint meteors from URS, maybe the observation time is too
far from the predicted maximum. It seems that URSs might be more red than
those SPOs I observed.
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<END OF REPORT>
Original records:
# TIME(UT) SHOWER MAG SPEED TRAIN(SEC) MEM
00 13:54 SPO
13:55 start
13:55 FOV: RA 05h 00m DEC +80d
showers: URS
13:57 LM: 17/12
01 13:58 URS +3 1 white
02 13:59 SPO +2 2
03 14:00 SPO +3 4
14:00 LM: 7/9
14:00 LM: 17/12
14:11 LM: 7/10
14:23 LM: 7/11
04 14:26 SPO +3 2
05 14:45 SPO +3 3
06 14:55 SPO +2 2
14:57 LM: 17/11
07 14:57 SPO +1 4
15:00 LM: 7/11
15:01 LM: 17/11
15:01 end
18:22 start
08 18:23 SPO +3 2
18:24 LM: 17/11
18:25 FOV: RA 06h 00m DEC +70d
18:28 LM: 19/5
18:30 LM: 19/6
09 18:31 SPO +4 5
10 18:31 SPO +3 2
18:31 LM: 17/11
11 18:34 SPO +3 5
12 18:36 SPO +3 1
13 18:36 SPO +1 3 1.0s
14 18:39 SPO +4 1
18:41 LM: 19/6
18:41 LM: 17/11
15 18:48 SPO +3 5
16 18:54 URS +0 2
17 18:54 SPO -1 1 appears with #16 simultaneously
19:01 LM: 17/12
19:01 LM: 19/6
18 19:03 SPO +2 4
19 19:03 SPO +3 3
19:04 airplane E-->W
20 19:05 URS +4 3 (red)
19:09 LM: 19/6
19:09 LM: 17/12
21 19:09 SPO +3 3
22 19:13 SPO +4 2
23 19:23 SPO +2 1
19:23 LM: 17/11
19:23 LM: 19/6
19:25 end
20:28 start
24 20:29 SPO +3 4
25 20:29 SPO +4 4
26 20:30 SPO +4 4
20:31-20:34 recorder problem
20:34 LM: 3/13
27 20:34 SPO +2 3 0.2s
20:36 LM: 16/6
28 20:36 URS +2 2 (red?)
20:37 satellite (NE-->E), at least flash, the 2nd flash mag = -3 !
20:37-20:50 recorder problem, make repairment.
20:51 resume
29 20:53 SPO +0 3
20:53 LM: 19/5
20:53 LM: 16/6
20:53 LM: 17/11
30 20:55 SPO +3 5
20:56 LM: 3/13
31 20:56 SPO +2 2
32 20:59 SPO +0 3 0.5s
33 20:59 SPO +1 3 1s exactly same position with #33, by about 2s delay
34 21:01 SPO +3 2
35 21:06 SPO +3 4
36 21:06 SPO +2 4 exactly same time with #35, but like / \. RA 10h30m, DEC +45
37 21:07 SPO +2 1 short arc, inside UMi gamma-13 --> Kocab
(21:12 SPO +2 2 seen by J. W. Wu)
21:13 LM: 3/13
21:14 LM: 17/10
21:15 LM: 16/8
38 21:15 SPO +3 3 0.5s
39 21:18 SPO +3 3
21:20 LM: 16/9
40 21:21 URS +3 3
41 21:23 SPO +4 3
42 21:23 SPO +4 3
21:26 LM: 16/8
43 21:26 SPO +2 3 0.5s
21:28 LM: 3/11
44 21:29 SPO +4 3
21:29 airplane (W-->E)
21:29 LM: 17/10
45 21:33 SPO +3 3
21:33 LM: 3/12
46 21:35 SPO +3 2
21:37 Iridium satellite flash? last for several seconds, mag = -4, E
47 21:40 SPO +5 5
48 21:41 SPO +3 4
21:42 LM: 3/13
21:43 LM: 17/10
21:43 end
--
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Jin Zhu | Tel.: +86-10-62751286 (O)
Beijing Astronomical Observatory | +86-314-5054767 (Schmidt dome)
Chinese Academy of Sciences | Pager: +86-10-96301682333
P. R. China | Fax : +86-10-62765031
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Room 2919, No. 2 Science Building, CAS-PKU Beijing Astrophysics Center,
Peking University, Beijing 100871, P. R. CHINA.
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email: zj@bac.pkudot edu.cn http://vega.bac.pkudot edu.cn/~zj
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