Update for (142) Polana - January 24/25, 2003
Update computed by Jan Manek; issued 19 Jan 2003 17:10 +0100 (CET)
Jan Manek's update
IOTA/IOTA-ES occultation update for
(142) Polana / TYC 0827-00902-1 on January 24/25, 2003
visible from Egypt, Libya, Tunisia, NE Algeria, Spain, Portugal
and Canada from east to west
Summary
In the night of January 24/25, 2003 a faint 10.7 mag star TYC 0827-00902-1
will be occulted by a 80 km asteroid (142) Polana. This update is based on
USNO/Flagstaff and TMO astrometry for the asteroid and recent UCAC star position.
The updated path shows ~3 path width east shift with time 1.0 minutes later compared to
Edwin Goffin's nominal prediction.
Updated path runs over Egypt ~4:07.8 UT, Libya ~4:08.5 UT, Tunisia ~4:10.0 UT, NE Algeria ~4:10.5 UT,
Spain just south of Madrid ~4:12.0 UT, Portugal with Porto in path ~4:12.6 UT and Canada from east to west
4:19 to 4:25 UT.
Please check the path chart for details.
Clear sky and good luck !!!
The event at one glimpse:
* date and approx. UT time of event: January 25, 2003 @ 04:12 UT (Europe)
* magnitude of target star: 11.8
* magnitude drop [mag]: 1.7
* estimated maximum duration [s]: 6.2
* path description: given above
* Goffin's original chart reference: A03_0118
The occultation path:
* approximate ground width [km]: 70
* uncertainty [path widths]: 1.25
* uncertainty in time [s]: 8
* map: below
* remarks: Path uncertainties are given according to nominal star
position errors and expected asteroid positional accuracy.
Data for the target star:
* name: TYC 0827-00902-1
* constellation: Leo
* J2000 position [h,m,s; o,',"]: 09h 36m 39.0455s; +12o 38' 44.199"
* position source: recent UCAC position combined with Tycho-2 proper motion
* estimated accuracy ["]: 0.02" (0.01", 0.01")
* V mag [mag]: 10.81
* B-V [mag]: +0.61
* remarks:
Target star is in southwest Leo, about 7.7 degrees west of 1.4 mag star alpha Leonis = SAO 98967
or 1.8 degrees NE of 5.0 mag star xi Leonis = SAO 98627.
!!! 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.
Close finding chart (prepared in GUIDE7):
* occulted star is in center - labeled with cross
* field is 3.0x3.0 degrees
* limiting magnitude is 13.0
* labeled stars have indicated SAO numbers
* remarks:
Data for the minor planet:
* general information:
number, name: (142) Polana
approx. diameter [km]: 57
* orbital information
orbit source: calculation Manek
source of used astrometry: USNO/Flagstaff (Ron Stone), TMO (Bill Owen)
number of used observations: 113 USNO, 2 TMO
number of rejected observations: 11 USNO
time covered by the observations: 1998 11 02 - 2003 01 15
rms residuals ["] (RA,DE): 0.09", 0.09"
estimated positional accuracy at epoch of event ["]: 0.07", 0.07"
remarks:
Data for the event:
* UT date and time of least geocentric approach: 04:16.0 UT
* approx. V mag of minor planet at event [mag]: 13.3
* geocentric parallax of minor planet ["]: 6.255
* magnitude drop [mag]: 1.7
* estimated maximum duration [s]: 6.2
* apparent motion of minor planet ["/h]: 32.61
* angular distance to moon, phase of moon [deg,%]: 70, 52%
* remarks:
Elements for WinOccult:
============ cut here ===========================================
2003 Jan 25
142 Polana
4h 16.0m UT
27-00902-1 11.8 9 36 39.046 12 38 44.20TYC 0827-00902-1
13.3 57 6.2 1.406 -2.170 7.45
-43.912 12.645 119.05 -19.07
4.2671 .13395 .56943 -5.07703 1.19082 -0.00163 0.00071
2000 286.3165512003 121.00000291.793561291.3969052.237940 0.136256192.418898612.0893087010.25 0.15
RATE 2.6198570 .0000000 .0000000 .0000000 .00000000 .00000000 .00000000
============ cut here ===========================================
Calculator(s): Jan Manek
Path coordinates:
Center Altitude Path Limits
E. Longitude Latitude U.T. star sun Limit 1 Limit 2
........................... shortened .............................
o ' " o ' " h m s o o o ' " o ' "
Latitude Latitude
34 0 0 27 26 6 4 7 26 18 -6 27 46 7 27 6 11
33 0 0 27 44 13 4 7 31 19 -7 28 4 16 27 24 16
32 0 0 28 2 29 4 7 35 20 -8 28 22 33 27 42 31
31 0 0 28 20 54 4 7 40 21 -9 28 40 59 28 0 55
30 0 0 28 39 27 4 7 45 22 -10 28 59 33 28 19 26
29 0 0 28 58 7 4 7 50 23 -11 29 18 15 28 38 5
28 0 0 29 16 55 4 7 55 24 -12 29 37 4 28 56 52
27 0 0 29 35 49 4 8 1 24 -13 29 55 59 29 15 45
26 0 0 29 54 50 4 8 7 25 -14 30 15 1 29 34 44
25 0 0 30 13 57 4 8 12 26 -14 30 34 9 29 53 50
24 0 0 30 33 9 4 8 18 27 -15 30 53 22 30 13 0
23 0 0 30 52 25 4 8 25 28 -16 31 12 40 30 32 16
22 0 0 31 11 47 4 8 31 29 -17 31 32 3 30 51 36
21 0 0 31 31 12 4 8 37 29 -18 31 51 29 31 11 0
20 0 0 31 50 41 4 8 44 30 -19 32 10 59 31 30 28
19 0 0 32 10 13 4 8 51 31 -20 32 30 32 31 49 59
18 0 0 32 29 47 4 8 58 32 -21 32 50 7 32 9 32
17 0 0 32 49 24 4 9 5 33 -21 33 9 45 32 29 8
16 0 0 33 9 2 4 9 12 33 -22 33 29 24 32 48 46
15 0 0 33 28 42 4 9 19 34 -23 33 49 4 33 8 24
14 0 0 33 48 22 4 9 26 35 -24 34 8 46 33 28 4
13 0 0 34 8 3 4 9 34 36 -25 34 28 27 33 47 44
12 0 0 34 27 43 4 9 41 36 -26 34 48 8 34 7 24
11 0 0 34 47 23 4 9 49 37 -26 35 7 49 34 27 3
10 0 0 35 7 3 4 9 57 38 -27 35 27 29 34 46 42
9 0 0 35 26 40 4 10 5 39 -28 35 47 7 35 6 19
8 0 0 35 46 16 4 10 13 39 -29 36 6 44 35 25 54
7 0 0 36 5 50 4 10 21 40 -30 36 26 18 35 45 28
6 0 0 36 25 21 4 10 29 41 -31 36 45 49 36 4 58
5 0 0 36 44 49 4 10 37 41 -31 37 5 18 36 24 26
4 0 0 37 4 13 4 10 45 42 -32 37 24 42 36 43 50
3 0 0 37 23 34 4 10 54 42 -33 37 44 3 37 3 10
2 0 0 37 42 50 4 11 2 43 -34 38 3 20 37 22 26
1 0 0 38 2 2 4 11 11 44 -34 38 22 32 37 41 38
0 0 0 38 21 8 4 11 19 44 -35 38 41 38 38 0 44
- 1 0 0 38 40 10 4 11 28 45 -36 39 0 40 38 19 45
- 2 0 0 38 59 5 4 11 36 45 -37 39 19 35 38 38 41
- 3 0 0 39 17 54 4 11 45 46 -37 39 38 24 38 57 30
- 4 0 0 39 36 37 4 11 54 46 -38 39 57 7 39 16 13
- 5 0 0 39 55 13 4 12 2 47 -39 40 15 43 39 34 49
- 6 0 0 40 13 42 4 12 11 47 -39 40 34 12 39 53 18
- 7 0 0 40 32 4 4 12 20 48 -40 40 52 33 40 11 40
- 8 0 0 40 50 17 4 12 29 48 -41 41 10 46 40 29 54
- 9 0 0 41 8 23 4 12 37 49 -41 41 28 51 40 47 60
- 10 0 0 41 26 20 4 12 46 49 -42 41 46 48 41 5 57
- 11 0 0 41 44 8 4 12 55 50 -43 42 4 36 41 23 46
- 12 0 0 42 1 48 4 13 4 50 -43 42 22 15 41 41 26
- 13 0 0 42 19 18 4 13 13 50 -44 42 39 44 41 58 57
........................... shortened .............................
- 52 0 0 51 8 51 4 18 35 51 -57 51 28 30 50 49 17
- 53 0 0 51 18 1 4 18 42 51 -57 51 37 38 50 58 28
- 54 0 0 51 26 57 4 18 49 50 -57 51 46 33 51 7 26
- 55 0 0 51 35 39 4 18 56 50 -57 51 55 13 51 16 9
- 56 0 0 51 44 7 4 19 3 50 -57 52 3 40 51 24 38
- 57 0 0 51 52 21 4 19 10 50 -57 52 11 52 51 32 54
- 58 0 0 52 0 21 4 19 17 49 -57 52 19 51 51 40 55
- 59 0 0 52 8 7 4 19 24 49 -57 52 27 36 51 48 43
- 60 0 0 52 15 40 4 19 31 49 -57 52 35 7 51 56 17
- 61 0 0 52 22 58 4 19 38 48 -57 52 42 25 52 3 37
- 62 0 0 52 30 3 4 19 44 48 -57 52 49 28 52 10 43
- 63 0 0 52 36 54 4 19 51 47 -56 52 56 18 52 17 35
- 64 0 0 52 43 31 4 19 58 47 -56 53 2 54 52 24 13
- 65 0 0 52 49 54 4 20 4 47 -56 53 9 16 52 30 38
- 66 0 0 52 56 4 4 20 11 46 -56 53 15 24 52 36 48
- 67 0 0 53 1 59 4 20 17 46 -56 53 21 18 52 42 45
- 68 0 0 53 7 41 4 20 23 46 -56 53 26 59 52 48 28
- 69 0 0 53 13 9 4 20 30 45 -55 53 32 26 52 53 57
- 70 0 0 53 18 24 4 20 36 45 -55 53 37 40 52 59 12
- 71 0 0 53 23 24 4 20 42 44 -55 53 42 39 53 4 14
- 72 0 0 53 28 11 4 20 48 44 -55 53 47 25 53 9 2
- 73 0 0 53 32 44 4 20 54 44 -55 53 51 57 53 13 36
- 74 0 0 53 37 4 4 21 0 43 -54 53 56 16 53 17 56
- 75 0 0 53 41 10 4 21 6 43 -54 54 0 21 53 22 3
- 76 0 0 53 45 2 4 21 12 42 -54 54 4 12 53 25 56
- 77 0 0 53 48 40 4 21 18 42 -53 54 7 50 53 29 35
- 78 0 0 53 52 5 4 21 23 41 -53 54 11 14 53 33 1
- 79 0 0 53 55 16 4 21 29 41 -53 54 14 24 53 36 12
- 80 0 0 53 58 14 4 21 35 40 -53 54 17 21 53 39 11
- 81 0 0 54 0 57 4 21 40 40 -52 54 20 4 53 41 55
- 82 0 0 54 3 28 4 21 46 40 -52 54 22 34 53 44 26
- 83 0 0 54 5 44 4 21 51 39 -52 54 24 50 53 46 43
- 84 0 0 54 7 47 4 21 57 39 -51 54 26 53 53 48 47
- 85 0 0 54 9 37 4 22 2 38 -51 54 28 42 53 50 37
- 86 0 0 54 11 13 4 22 7 38 -51 54 30 17 53 52 13
- 87 0 0 54 12 35 4 22 12 37 -50 54 31 39 53 53 36
- 88 0 0 54 13 44 4 22 17 37 -50 54 32 47 53 54 45
- 89 0 0 54 14 39 4 22 23 36 -49 54 33 42 53 55 40
- 90 0 0 54 15 20 4 22 28 36 -49 54 34 23 53 56 21
- 91 0 0 54 15 48 4 22 33 35 -49 54 34 51 53 56 49
- 92 0 0 54 16 2 4 22 37 35 -48 54 35 5 53 57 4
- 93 0 0 54 16 3 4 22 42 34 -48 54 35 5 53 57 4
- 94 0 0 54 15 49 4 22 47 34 -47 54 34 52 53 56 51
- 95 0 0 54 15 23 4 22 52 33 -47 54 34 25 53 56 25
- 96 0 0 54 14 42 4 22 56 33 -47 54 33 45 53 55 44
- 97 0 0 54 13 48 4 23 1 32 -46 54 32 51 53 54 50
- 98 0 0 54 12 40 4 23 6 32 -46 54 31 43 53 53 42
- 99 0 0 54 11 19 4 23 10 31 -45 54 30 22 53 52 20
-100 0 0 54 9 44 4 23 15 31 -45 54 28 47 53 50 45
-101 0 0 54 7 55 4 23 19 30 -44 54 26 58 53 48 56
-102 0 0 54 5 52 4 23 23 30 -44 54 24 56 53 46 52
-103 0 0 54 3 35 4 23 27 29 -43 54 22 40 53 44 35
-104 0 0 54 1 5 4 23 32 29 -43 54 20 9 53 42 5
-105 0 0 53 58 20 4 23 36 28 -43 54 17 26 53 39 20
-106 0 0 53 55 22 4 23 40 28 -42 54 14 28 53 36 21
-107 0 0 53 52 10 4 23 44 27 -42 54 11 16 53 33 8
-108 0 0 53 48 44 4 23 48 26 -41 54 7 51 53 29 42
-109 0 0 53 45 4 4 23 51 26 -41 54 4 11 53 26 1
-110 0 0 53 41 10 4 23 55 25 -40 54 0 18 53 22 6
-111 0 0 53 37 2 4 23 59 25 -40 53 56 11 53 17 57
-112 0 0 53 32 39 4 24 3 24 -39 53 51 49 53 13 34
-113 0 0 53 28 3 4 24 6 24 -39 53 47 14 53 8 57
-114 0 0 53 23 13 4 24 10 23 -38 53 42 24 53 4 6
-115 0 0 53 18 8 4 24 13 23 -38 53 37 20 52 59 0
-116 0 0 53 12 49 4 24 17 22 -37 53 32 2 52 53 40
-117 0 0 53 7 16 4 24 20 21 -36 53 26 30 52 48 6
-118 0 0 53 1 28 4 24 23 21 -36 53 20 43 52 42 18
-119 0 0 52 55 26 4 24 26 20 -35 53 14 42 52 36 15
-120 0 0 52 49 10 4 24 29 20 -35 53 8 27 52 29 57
-121 0 0 52 42 39 4 24 32 19 -34 53 1 57 52 23 25
-122 0 0 52 35 54 4 24 35 18 -34 52 55 13 52 16 39
-123 0 0 52 28 54 4 24 38 18 -33 52 48 15 52 9 38
-124 0 0 52 21 39 4 24 41 17 -33 52 41 1 52 2 22
-125 0 0 52 14 10 4 24 44 17 -32 52 33 34 51 54 52
-126 0 0 52 6 27 4 24 46 16 -31 52 25 51 51 47 7
-127 0 0 51 58 28 4 24 49 15 -31 52 17 54 51 39 7
-128 0 0 51 50 15 4 24 51 15 -30 52 9 43 51 30 53
-129 0 0 51 41 48 4 24 54 14 -30 52 1 16 51 22 24
-130 0 0 51 33 5 4 24 56 14 -29 51 52 35 51 13 40
-131 0 0 51 24 8 4 24 58 13 -29 51 43 39 51 4 41
-132 0 0 51 14 55 4 25 0 12 -28 51 34 28 50 55 27
-133 0 0 51 5 28 4 25 2 12 -27 51 25 2 50 45 59
-134 0 0 50 55 46 4 25 4 11 -27 51 15 22 50 36 15
-135 0 0 50 45 49 4 25 6 10 -26 51 5 26 50 26 17
-136 0 0 50 35 37 4 25 8 10 -25 50 55 16 50 16 3
-137 0 0 50 25 10 4 25 9 9 -25 50 44 51 50 5 35
-138 0 0 50 14 28 4 25 11 8 -24 50 34 10 49 54 51
-139 0 0 50 3 31 4 25 12 8 -24 50 23 15 49 43 53
-140 0 0 49 52 20 4 25 13 7 -23 50 12 5 49 32 39
-141 0 0 49 40 53 4 25 15 6 -22 50 0 39 49 21 11
-142 0 0 49 29 11 4 25 16 6 -22 49 48 59 49 9 28
-143 0 0 49 17 14 4 25 17 5 -21 49 37 4 48 57 29
........................... shortened .............................
----------------------------------------------------------------------------
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@worldonline.cz |-O-O-|
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