Update for (844) Leontina - November 17/18, 2002
Update computed by Jan Manek; issued 13 Nov 2002 22:05:00 +0100 (CET)
Jan Manek's update
IOTA/IOTA-ES occultation update for
(844) Leontina / TYC 2361-01655-1 on November 17/18, 2002
visible from middle East, S Italy, Sardegna, N Spain and S France,
later USA from NE to SW and N Mexico
Summary
In the night of November 17/18, 2002 a faint 11.5 mag star TYC 2361-01655-1
will be occulted by a 66 km asteroid (844) Leontina. This update is based on
USNO/Flagstaff astrometry for the asteroid and recent UCAC star position.
The updated path shows ~2 path width north shift with time 0.7 minutes later compared to
Edwin Goffin's nominal prediction.
Updated path runs over middle East and N Egypt with Alexandria ~2:57.5 UT, S Italy ~2:58.8 UT,
Sardinia ~2:59.5 UT, N Spain and S France in the Pyrenees area ~3:00.3 UT, later USA from NE to SW
(New York to Texas) 3:07 -> 3:10 UT and N Mexico around ~3:10.5 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: November 18, 2002 @ 03:00 UT (Europe)
03:09 UT (USA)
* magnitude of target star: 11.5
* magnitude drop [mag]: 2.7
* estimated maximum duration [s]: 5.0
* path description: given above
* Goffin's original chart reference: A02_1136
The occultation path:
* approximate ground width [km]: 70
* uncertainty [path widths]: 2.2
* uncertainty in time [s]: 10
* 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 2361-01655-1
* constellation: Perseus
* J2000 position [h,m,s; o,',"]: 04h 01m 58.0169s; +33o 03' 47.995"
* position source: recent UCAC position combined with Tycho-2 proper motion
* estimated accuracy ["]: 0.02" (0.01", 0.01")
* V mag [mag]: 11.54
* B-V [mag]: +0.99
* remarks:
Recent UCAC position was provided by Marion and Norbert Zacharias.
Target star is in south Perseus, 2.0 degrees northeast of 2.9 mag star zeta Persei = SAO 56799.
!!! 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 3.5x3.5 degrees
* limiting magnitude is 13.0
* labeled stars have indicated SAO numbers
* remarks:
Data for the minor planet:
* general information:
number, name: (844) Leontina
approx. diameter [km]: 66
* orbital information
orbit source: calculation Manek
source of used astrometry: USNO/Flagstaff (Ron Stone)
number of used observations: 95 USNO
number of rejected observations: 19 USNO
time covered by the observations: 1998 02 24 - 2002 11 07
rms residuals ["] (RA,DE): 0.10", 0.11"
estimated positional accuracy at epoch of event ["]: 0.07", 0.08"
remarks:
Data for the event:
* UT date and time of least geocentric approach: 03:04.3 UT
* approx. V mag of minor planet at event [mag]: 14.1
* geocentric parallax of minor planet ["]: 3.961
* magnitude drop [mag]: 2.7
* estimated maximum duration [s]: 5.0
* apparent motion of minor planet ["/h]: 29.64
* angular distance to moon, phase of moon [deg,%]: 34, 97%
* remarks:
Elements for WinOccult:
============ cut here ===========================================
2002 Nov 18
844 Leontina
3h 4.3m UT
61-01655-1 11.5 4 1 58.017 33 3 48.00TYC 2361-01655-1
14.1 66 5.0 2.220 -2.348 -2.74
-42.582 33.064 130.20 -19.16
3.0719 -.01983 .21466 -7.45108 -0.68986 -0.00070 -0.00140
2000 81.135557420021112.00000342.556271349.0075398.813829 0.074224643.199075752.961625519.405 0.15
RATE 1.7225320 .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
43 0 0 25 10 11 2 56 54 18 -7 25 31 52 24 48 33
42 0 0 25 44 51 2 56 57 19 -8 26 6 29 25 23 15
41 0 0 26 19 4 2 57 0 20 -9 26 40 39 25 57 32
40 0 0 26 52 50 2 57 4 21 -10 27 14 21 26 31 21
39 0 0 27 26 8 2 57 7 22 -11 27 47 36 27 4 42
38 0 0 27 58 58 2 57 10 24 -12 28 20 23 27 37 35
37 0 0 28 31 19 2 57 14 25 -13 28 52 41 28 10 0
36 0 0 29 3 12 2 57 18 26 -14 29 24 30 28 41 56
35 0 0 29 34 35 2 57 22 27 -15 29 55 49 29 13 22
34 0 0 30 5 28 2 57 25 28 -16 30 26 38 29 44 19
33 0 0 30 35 50 2 57 29 29 -17 30 56 57 30 14 45
32 0 0 31 5 43 2 57 34 29 -18 31 26 46 30 44 41
31 0 0 31 35 5 2 57 38 30 -19 31 56 4 31 14 7
30 0 0 32 3 56 2 57 42 31 -20 32 24 52 31 43 2
29 0 0 32 32 16 2 57 46 32 -21 32 53 8 32 11 26
28 0 0 33 0 5 2 57 51 33 -22 33 20 53 32 39 19
27 0 0 33 27 23 2 57 55 34 -22 33 48 7 33 6 41
26 0 0 33 54 10 2 57 60 35 -23 34 14 50 33 33 31
25 0 0 34 20 25 2 58 4 36 -24 34 41 1 33 59 50
24 0 0 34 46 9 2 58 9 37 -25 35 6 41 34 25 38
23 0 0 35 11 21 2 58 14 38 -26 35 31 50 34 50 55
22 0 0 35 36 3 2 58 19 39 -27 35 56 27 35 15 40
21 0 0 36 0 13 2 58 24 40 -28 36 20 33 35 39 54
20 0 0 36 23 52 2 58 28 40 -28 36 44 8 36 3 37
19 0 0 36 46 60 2 58 33 41 -29 37 7 12 36 26 49
18 0 0 37 9 36 2 58 38 42 -30 37 29 45 36 49 29
17 0 0 37 31 42 2 58 43 43 -31 37 51 47 37 11 39
16 0 0 37 53 17 2 58 48 44 -32 38 13 18 37 33 18
15 0 0 38 14 22 2 58 54 45 -32 38 34 19 37 54 26
14 0 0 38 34 56 2 58 59 45 -33 38 54 49 38 15 4
13 0 0 38 54 59 2 59 4 46 -34 39 14 49 38 35 11
12 0 0 39 14 33 2 59 9 47 -35 39 34 19 38 54 49
11 0 0 39 33 37 2 59 14 48 -35 39 53 19 39 13 56
10 0 0 39 52 10 2 59 20 49 -36 40 11 49 39 32 33
9 0 0 40 10 15 2 59 25 49 -37 40 29 50 39 50 41
8 0 0 40 27 49 2 59 30 50 -37 40 47 21 40 8 19
7 0 0 40 44 55 2 59 35 51 -38 41 4 23 40 25 28
6 0 0 41 1 32 2 59 41 52 -39 41 20 57 40 42 9
5 0 0 41 17 40 2 59 46 52 -40 41 37 1 40 58 20
4 0 0 41 33 19 2 59 51 53 -40 41 52 37 41 14 2
3 0 0 41 48 30 2 59 57 54 -41 42 7 45 41 29 17
2 0 0 42 3 13 3 0 2 55 -42 42 22 25 41 44 3
1 0 0 42 17 28 3 0 8 55 -42 42 36 37 41 58 21
0 0 0 42 31 16 3 0 13 56 -43 42 50 21 42 12 11
- 1 0 0 42 44 35 3 0 18 57 -44 43 3 38 42 25 34
- 2 0 0 42 57 28 3 0 24 58 -44 43 16 28 42 38 29
- 3 0 0 43 9 53 3 0 29 58 -45 43 28 51 42 50 57
- 4 0 0 43 21 52 3 0 35 59 -45 43 40 47 43 2 59
- 5 0 0 43 33 24 3 0 40 60 -46 43 52 16 43 14 33
- 6 0 0 43 44 29 3 0 46 60 -47 44 3 19 43 25 41
- 7 0 0 43 55 8 3 0 51 61 -47 44 13 56 43 36 23
- 8 0 0 44 5 21 3 0 56 62 -48 44 24 6 43 46 38
- 9 0 0 44 15 9 3 1 2 62 -48 44 33 51 43 56 27
- 10 0 0 44 24 30 3 1 7 63 -49 44 43 10 44 5 51
- 11 0 0 44 33 26 3 1 13 63 -49 44 52 4 44 14 49
- 12 0 0 44 41 56 3 1 18 64 -50 45 0 32 44 23 21
- 13 0 0 44 50 1 3 1 24 65 -51 45 8 36 44 31 28
- 14 0 0 44 57 41 3 1 29 65 -51 45 16 14 44 39 10
- 15 0 0 45 4 56 3 1 35 66 -52 45 23 27 44 46 27
........................... shortened .............................
- 61 0 0 43 25 21 3 5 58 72 -64 43 44 15 43 6 28
- 62 0 0 43 13 32 3 6 4 72 -64 43 32 29 42 54 37
- 63 0 0 43 1 17 3 6 10 71 -64 43 20 16 42 42 18
- 64 0 0 42 48 34 3 6 16 71 -64 43 7 37 42 29 33
- 65 0 0 42 35 25 3 6 22 70 -63 42 54 30 42 16 21
- 66 0 0 42 21 49 3 6 29 70 -63 42 40 57 42 2 42
- 67 0 0 42 7 45 3 6 35 69 -63 42 26 56 41 48 35
- 68 0 0 41 53 14 3 6 41 68 -63 42 12 28 41 34 1
- 69 0 0 41 38 15 3 6 47 68 -63 41 57 32 41 18 59
- 70 0 0 41 22 48 3 6 53 67 -62 41 42 8 41 3 29
- 71 0 0 41 6 52 3 6 59 66 -62 41 26 16 40 47 30
- 72 0 0 40 50 29 3 7 5 66 -62 41 9 56 40 31 3
- 73 0 0 40 33 37 3 7 12 65 -61 40 53 7 40 14 8
- 74 0 0 40 16 16 3 7 18 64 -61 40 35 50 39 56 43
- 75 0 0 39 58 26 3 7 24 64 -60 40 18 3 39 38 50
- 76 0 0 39 40 7 3 7 30 63 -60 39 59 48 39 20 28
- 77 0 0 39 21 19 3 7 36 62 -60 39 41 3 39 1 36
- 78 0 0 39 2 1 3 7 43 61 -59 39 21 49 38 42 14
- 79 0 0 38 42 13 3 7 49 61 -59 39 2 5 38 22 23
- 80 0 0 38 21 56 3 7 55 60 -58 38 41 52 38 2 2
- 81 0 0 38 1 9 3 8 1 59 -58 38 21 8 37 41 11
- 82 0 0 37 39 52 3 8 8 58 -57 37 59 55 37 19 50
- 83 0 0 37 18 4 3 8 14 58 -57 37 38 11 36 57 59
- 84 0 0 36 55 46 3 8 20 57 -56 37 15 57 36 35 38
- 85 0 0 36 32 58 3 8 26 56 -55 36 53 13 36 12 45
- 86 0 0 36 9 39 3 8 33 55 -55 36 29 58 35 49 23
- 87 0 0 35 45 50 3 8 39 54 -54 36 6 12 35 25 30
- 88 0 0 35 21 30 3 8 45 53 -54 35 41 56 35 1 6
- 89 0 0 34 56 39 3 8 51 53 -53 35 17 9 34 36 11
- 90 0 0 34 31 18 3 8 57 52 -52 34 51 51 34 10 46
- 91 0 0 34 5 26 3 9 4 51 -52 34 26 3 33 44 50
- 92 0 0 33 39 3 3 9 10 50 -51 33 59 44 33 18 23
- 93 0 0 33 12 9 3 9 16 49 -50 33 32 54 32 51 26
- 94 0 0 32 44 45 3 9 22 48 -49 33 5 34 32 23 58
- 95 0 0 32 16 51 3 9 28 47 -49 32 37 43 31 56 0
- 96 0 0 31 48 26 3 9 34 46 -48 32 9 22 31 27 32
- 97 0 0 31 19 31 3 9 40 45 -47 31 40 31 30 58 33
- 98 0 0 30 50 6 3 9 46 44 -46 31 11 10 30 29 5
- 99 0 0 30 20 12 3 9 51 44 -45 30 41 19 29 59 6
-100 0 0 29 49 48 3 9 57 43 -45 30 10 58 29 28 39
-101 0 0 29 18 54 3 10 3 42 -44 29 40 9 28 57 42
-102 0 0 28 47 32 3 10 9 41 -43 29 8 50 28 26 17
-103 0 0 28 15 42 3 10 14 40 -42 28 37 3 27 54 23
-104 0 0 27 43 23 3 10 20 39 -41 28 4 47 27 22 1
-105 0 0 27 10 37 3 10 25 38 -40 27 32 4 26 49 11
-106 0 0 26 37 23 3 10 31 37 -39 26 58 53 26 15 55
-107 0 0 26 3 43 3 10 36 36 -39 26 25 16 25 42 12
-108 0 0 25 29 37 3 10 41 35 -38 25 51 13 25 8 3
-109 0 0 24 55 5 3 10 46 33 -37 25 16 44 24 33 28
-110 0 0 24 20 9 3 10 51 32 -36 24 41 50 23 58 29
-111 0 0 23 44 48 3 10 56 31 -35 24 6 32 23 23 6
-112 0 0 23 9 4 3 11 1 30 -34 23 30 50 22 47 20
-113 0 0 22 32 57 3 11 5 29 -33 22 54 46 22 11 11
-114 0 0 21 56 29 3 11 10 28 -32 22 18 19 21 34 40
-115 0 0 21 19 39 3 11 14 27 -31 21 41 32 20 57 49
-116 0 0 20 42 30 3 11 19 26 -30 21 4 24 20 20 37
-117 0 0 20 5 1 3 11 23 25 -29 20 26 57 19 43 7
-118 0 0 19 27 15 3 11 27 24 -28 19 49 12 19 5 19
-119 0 0 18 49 11 3 11 30 23 -27 19 11 10 18 27 14
........................... 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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