IOTA/IOTA-ES occultation update for
(385) Ilmatar / HIP 34822 = SAO 41621 on January 19/20, 2004
visible from India, midle East, Tunisia, Algeria, Morocco, Canary Islands,
Surina, S Guyana and NW Brasil
Summary
In the night of January 19/20, 2004 a bright 8.3 mag star HIP 34822 = SAO 41621 will be occulted by a 82 km asteroid (385) Ilmatar. This update is based on USNO/Flagstaff and TMO astrometry for the asteroid and UCAC2 star position.
The updated path shows ~2 path widths north shift with time 0.4 minutes earlier compared to Edwin Goffin's nominal prediction.
Updated path runs due to north shift over India ~23:15.6 UT, middle East around 23:19.5 UT, Tunisia ~23:22.9 UT, Algeria ~23:23.9 UT, Morocco ~23:25.3 UT, Canary Islands ~23:26.2 UT, Surinam ~23:31.6 UT, S Guyana ~23:32.0 UT and NW Brasil ~23:32.4 UT. Please check the path chart for details.
Here is current station list for European cities.
Clear sky and good luck !!!
The event at one glimpse:
* date and approx. UT time of event: January 19, 2004 @ 23:22 UT (Europe)
* magnitude of target star: 8.3
* magnitude drop [mag]: 3.3
* estimated maximum duration [s]: 8.1
* approx. V mag of minor planet at event [mag]: 11.5
* geocentric parallax of minor planet ["]: 5.104
* apparent motion of minor planet ["/h]: 33.63
* angular distance to moon, phase of moon [deg,%]: 162, 5%
* Goffin's original chart reference: A04_0128
The occultation path with path maps:
* approximate ground width [km]: 100
* uncertainty [path widths]: 0.5
* uncertainty in time [s]: 8
* map: Overview
Indian part
N.Africa part
S.America part
* remarks: Path uncertainties [1 sigmas] are given according to nominal star
position errors and expected asteroid positional accuracy.
Elements for WinOccult - use 'Save as ...' to download and save these elements.
Finding charts (prepared in GUIDE8):
* occulted star is in center - labeled with cross
* labeled stars have indicated SAO numbers
* square box shows 30' field in all wider field charts
* remarks:
Target star is in very east Auriga, about 9.2 degrees northwest of 1.9 mag star alpha Geminorum = SAO 60198.
!!! IMPORTANT !!!
Purple stars in identification chart are so called 'non-star' objects in GSC; in dense fields
the 'non-stars' are often real stars or blends of close pairs. Be careful about this.
20-degree chart
3-degree chart
0.5-degree chart
Data for the target star:
* name: HIP 34822 = SAO 41621 = PPM 49677 = GSC 2948-00445
* constellation: Gemini
* J2000 position [h,m,s; o,',"]: 07h 12m 27.2853s; +40o 00' 39.004"
* position source: Hipparcos
* estimated accuracy ["]: 0.03" (0.03", 0.01")
* V mag [mag]: 8.26
* B-V [mag]: +1.43
* remarks:
Data for the minor planet:
* general information:
number, name: (385) Ilmatar
approx. diameter [km]: 94
* orbital information
orbit source: calculation Manek
source of used astrometry: USNO/Flagstaff (Ron Stone), TMO (Bill Owen)
number of used observations: 111 USNO, 24 TMO
number of rejected observations: 3 TMO
time covered by the observations: 1997 06 17 - 2003 12 29
rms residuals ["] (RA,DE): 0.08", 0.08"
estimated positional accuracy at epoch of event ["]: 0.07", 0.03"
remarks:
Calculator(s): Jan Manek
Path coordinates:
Centre Star Star Sun Path Limits Error Limits
E. Longitude Latitude U.T. Alt Az Alt Limit 1 Limit 2 Limit 3 Limit 4
...................................... shortened .............................................
o ' " o ' " h m s o o o o ' " o ' " o ' " o ' "
Latitude Latitude Latitude Latitude
84 0 0 10 36 59 23 15 12 12 309 -22 11 9 18 10 4 36 11 41 33 9 32 9
82 0 0 12 4 35 23 15 18 14 309 -24 12 36 34 11 32 33 13 8 29 11 0 26
80 0 0 13 29 9 23 15 24 17 308 -27 14 0 47 12 57 27 14 32 22 12 25 42
78 0 0 14 50 37 23 15 31 19 308 -29 15 21 54 14 19 15 15 53 9 13 47 50
76 0 0 16 8 55 23 15 38 21 307 -31 16 39 53 15 37 54 17 10 47 15 6 50
74 0 0 17 24 4 23 15 47 24 307 -33 17 54 41 16 53 23 18 25 15 16 22 39
72 0 0 18 36 1 23 15 56 26 306 -35 19 6 19 18 5 40 19 36 34 17 35 16
70 0 0 19 44 49 23 16 5 28 306 -37 20 14 47 19 14 47 20 44 43 18 44 43
68 0 0 20 50 27 23 16 15 30 305 -39 21 20 7 20 20 45 21 49 44 19 50 59
66 0 0 21 52 59 23 16 26 32 305 -41 22 22 20 21 23 34 22 51 39 20 54 7
64 0 0 22 52 24 23 16 37 34 304 -43 23 21 28 22 23 18 23 50 29 21 54 8
62 0 0 23 48 47 23 16 48 36 303 -45 24 17 34 23 19 58 24 46 18 22 51 6
60 0 0 24 42 10 23 16 59 38 303 -47 25 10 40 24 13 37 25 39 8 23 45 2
58 0 0 25 32 36 23 17 11 40 302 -49 26 0 51 25 4 19 26 29 3 24 35 59
56 0 0 26 20 8 23 17 24 42 301 -50 26 48 8 25 52 6 27 16 5 25 24 2
54 0 0 27 4 49 23 17 36 44 301 -52 27 32 35 26 37 2 28 0 18 26 9 12
52 0 0 27 46 43 23 17 49 46 300 -54 28 14 15 27 19 9 28 41 45 26 51 33
50 0 0 28 25 53 23 18 2 48 300 -56 28 53 12 27 58 32 29 20 29 27 31 8
48 0 0 29 2 22 23 18 15 49 299 -57 29 29 29 28 35 12 29 56 34 28 8 1
46 0 0 29 36 12 23 18 28 51 298 -59 30 3 8 29 9 14 30 30 2 28 42 14
44 0 0 30 7 28 23 18 41 53 298 -60 30 34 13 29 40 40 31 0 57 29 13 50
42 0 0 30 36 11 23 18 55 54 297 -62 31 2 47 30 9 33 31 29 21 29 42 53
40 0 0 31 2 25 23 19 9 56 297 -63 31 28 52 30 35 56 31 55 17 30 9 24
38 0 0 31 26 11 23 19 22 58 297 -65 31 52 30 30 59 50 32 18 48 30 33 27
36 0 0 31 47 33 23 19 36 59 296 -66 32 13 45 31 21 20 32 39 55 30 55 4
34 0 0 32 6 33 23 19 50 61 296 -68 32 32 38 31 40 26 32 58 42 31 14 17
32 0 0 32 23 12 23 20 5 63 296 -69 32 49 11 31 57 10 33 15 9 31 31 7
30 0 0 32 37 31 23 20 19 64 296 -70 33 3 26 32 11 35 33 29 19 31 45 37
28 0 0 32 49 34 23 20 33 66 296 -71 33 15 24 32 23 42 33 41 13 31 57 47
26 0 0 32 59 20 23 20 48 67 296 -72 33 25 7 32 33 31 33 50 52 32 7 40
24 0 0 33 6 51 23 21 2 69 297 -74 33 32 35 32 41 5 33 58 18 32 15 17
22 0 0 33 12 8 23 21 17 70 297 -74 33 37 50 32 46 24 34 3 31 32 20 37
20 0 0 33 15 11 23 21 32 72 298 -75 33 40 53 32 49 28 34 6 32 32 23 43
18 0 0 33 16 1 23 21 47 73 300 -76 33 41 42 32 50 18 34 7 22 32 24 33
16 0 0 33 14 38 23 22 2 74 302 -77 33 40 20 32 48 55 34 5 59 32 23 9
14 0 0 33 11 2 23 22 17 76 304 -77 33 36 45 32 45 17 34 2 26 32 19 31
12 0 0 33 5 12 23 22 32 77 308 -77 33 30 57 32 39 26 33 56 40 32 13 37
10 0 0 32 57 9 23 22 48 78 312 -77 33 22 56 32 31 20 33 48 42 32 5 29
8 0 0 32 46 51 23 23 3 79 317 -77 33 12 42 32 20 58 33 38 31 31 55 4
6 0 0 32 34 18 23 23 19 80 324 -77 33 0 13 32 8 21 33 26 6 31 42 22
4 0 0 32 19 28 23 23 35 81 332 -76 32 45 28 31 53 26 33 11 26 31 27 22
2 0 0 32 2 20 23 23 50 81 342 -75 32 28 26 31 36 12 32 54 30 31 10 2
0 0 0 31 42 52 23 24 6 81 352 -74 32 9 5 31 16 38 32 35 15 30 50 22
- 2 0 0 31 21 4 23 24 22 81 2 -73 31 47 23 30 54 42 32 13 41 30 28 19
- 4 0 0 30 56 52 23 24 39 80 11 -72 31 23 20 30 30 23 31 49 46 30 3 51
- 6 0 0 30 30 15 23 24 55 79 19 -71 30 56 52 30 3 37 31 23 26 29 36 57
- 8 0 0 30 1 11 23 25 11 78 25 -70 30 27 57 29 34 23 30 54 41 29 7 34
- 10 0 0 29 29 37 23 25 28 77 30 -69 29 56 33 29 2 39 30 23 28 28 35 39
- 12 0 0 28 55 31 23 25 45 76 34 -67 29 22 38 28 28 22 29 49 43 28 1 11
- 14 0 0 28 18 50 23 26 2 74 37 -66 28 46 9 27 51 30 29 13 26 27 24 7
- 16 0 0 27 39 32 23 26 18 73 39 -64 28 7 3 27 11 59 28 34 32 26 44 23
- 18 0 0 26 57 33 23 26 35 71 41 -63 27 25 17 26 29 47 27 52 59 26 1 58
- 20 0 0 26 12 52 23 26 53 70 42 -61 26 40 49 25 44 51 27 8 45 25 16 49
- 22 0 0 25 25 24 23 27 10 68 43 -59 25 53 36 24 57 10 26 21 46 24 28 53
- 24 0 0 24 35 8 23 27 27 66 44 -58 25 3 35 24 6 39 25 32 0 23 38 6
- 26 0 0 23 42 1 23 27 44 64 45 -56 24 10 44 23 13 16 24 39 24 22 44 28
- 28 0 0 22 46 1 23 28 1 62 45 -54 23 15 0 22 16 59 23 43 56 21 47 55
- 30 0 0 21 47 5 23 28 19 60 46 -52 22 16 20 21 17 46 22 45 34 20 48 25
- 32 0 0 20 45 11 23 28 36 58 46 -50 21 14 44 20 15 36 21 44 15 19 45 57
- 34 0 0 19 40 19 23 28 53 56 46 -48 20 10 9 19 10 25 20 39 57 18 40 29
- 36 0 0 18 32 26 23 29 10 54 46 -46 19 2 35 18 2 15 19 32 41 17 32 0
- 38 0 0 17 21 33 23 29 27 52 46 -44 17 52 0 16 51 3 18 22 24 16 20 30
- 40 0 0 16 7 40 23 29 43 50 46 -42 16 38 25 15 36 51 17 9 8 15 5 58
- 42 0 0 14 50 47 23 30 0 48 46 -40 15 21 51 14 19 39 15 52 53 13 48 27
- 44 0 0 13 30 56 23 30 16 45 46 -38 14 2 19 12 59 29 14 33 39 12 27 58
- 46 0 0 12 8 10 23 30 32 43 46 -36 12 39 52 11 36 24 13 11 31 11 4 34
- 48 0 0 10 42 32 23 30 47 41 45 -34 11 14 33 10 10 27 11 46 31 9 38 18
- 50 0 0 9 14 8 23 31 2 38 45 -31 9 46 28 8 41 45 10 18 44 8 9 17
- 52 0 0 7 43 4 23 31 16 36 45 -29 8 15 42 7 10 22 8 48 16 6 37 36
- 54 0 0 6 9 28 23 31 29 33 45 -27 6 42 23 5 36 28 7 15 15 5 3 24
- 56 0 0 4 33 27 23 31 42 31 45 -24 5 6 40 4 0 11 5 39 48 3 26 49
- 58 0 0 2 55 14 23 31 55 28 45 -22 3 28 42 2 21 41 4 2 7 1 48 3
- 60 0 0 1 14 59 23 32 6 26 45 -19 1 48 43 0 41 11 2 22 22 0 7 18
- 62 0 0 - 0 27 3 23 32 16 23 45 -17 0 6 55 - 1 1 5 0 40 48 - 1 35 12
- 64 0 0 - 2 10 38 23 32 26 21 45 -15 - 1 36 28 - 2 44 53 - 1 2 22 - 3 19 13
- 66 0 0 - 3 55 29 23 32 34 18 46 -12 - 3 21 8 - 4 29 55 - 2 46 51 - 5 4 27
- 68 0 0 - 5 41 19 23 32 41 15 46 -10 - 5 6 49 - 6 15 55 - 4 32 22 - 6 50 36
- 70 0 0 - 7 27 50 23 32 48 13 46 -7 - 6 53 11 - 8 2 33 - 6 18 37 - 8 37 22
...................................... shortened .............................................
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Jan Manek
Stefanik Observatory Private :
Petrin 205 Werichova 950
118 46 Praha 1 152 00 Praha 5 - Barrandov |_|_|
Czech Republic Czech Republic / \
Internet : jan.manek AT worldonline.cz |-O-O-|
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