Update for (387) Aquitania - February 11/12, 2003
Update computed by Jan Manek; issued 02 Feb 2003 22:55 +0100 (CET)
Jan Manek's update
IOTA/IOTA-ES occultation update for
(387) Aquitania / TYC 1433-01114-1 on February 11/12, 2003
visible from Africa and Canada
Summary
In the night of February 11/12, 2003 a faint 11.3 mag star TYC 1433-01114-1
will be occulted by a 106 km asteroid (387) Aquitania. This update is based on
USNO/Flagstaff astrometry for the asteroid and recent UCAC star position.
The updated path shows ~6 path width SW shift with time 0.6 minutes earlier compared to
Edwin Goffin's nominal prediction.
Updated path runs over Africa from SE to NW 1:17-1:25 UT and NE Canada around 1:29.5 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: February 12, 2003 @ 01:25 UT (Europe miss)
01:29 UT (Canada)
* magnitude of target star: 11.7
* magnitude drop [mag]: 0.9
* estimated maximum duration [s]: 7.3
* path description: given above
* Goffin's original chart reference: A03_0231
The occultation path:
* approximate ground width [km]: 110
* uncertainty [path widths]: 0.6
* uncertainty in time [s]: 5
* 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 1433-01114-1
* constellation: Leo
* J2000 position [h,m,s; o,',"]: 11h 11m 26.0273s; +18o 36' 56.297"
* position source: recent UCAC position combined with Tycho-2 proper motion
* estimated accuracy ["]: 0.02" (0.01", 0.02")
* V mag [mag]: 11.69
* B-V [mag]: +0.49
* remarks:
Target star is in east Leo, about 2.0 degrees south of 2.5 mag star delta Leonis = SAO 81727 or
6' SW of 8.2 mag star SAO 99491.
!!! 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: (387) Aquitania
approx. diameter [km]: 106
* orbital information
orbit source: calculation Manek
source of used astrometry: USNO/Flagstaff (Ron Stone)
number of used observations: 114 USNO
number of rejected observations: 12 USNO
time covered by the observations: 1998 02 14 - 2003 01 15
rms residuals ["] (RA,DE): 0.06", 0.07"
estimated positional accuracy at epoch of event ["]: 0.04", 0.04"
remarks:
Data for the event:
* UT date and time of least geocentric approach: 01:22.8 UT
* approx. V mag of minor planet at event [mag]: 12.0
* geocentric parallax of minor planet ["]: 4.178
* magnitude drop [mag]: 0.9
* estimated maximum duration [s]: 7.3
* apparent motion of minor planet ["/h]: 34.15
* angular distance to moon, phase of moon [deg,%]: 80, 74%
* remarks:
Elements for WinOccult:
============ cut here ===========================================
2003 Feb 12
387 Aquitania
1h 22.8m UT
33-01114-1 11.7 11 11 26.027 18 36 56.30TYC 1433-01114-1
12.0 106 7.3 2.105 -1.561 25.97
5.472 18.608 162.87 -13.88
1.3797 .02155 .01803 -5.30786 6.21575 -0.00220 -0.00036
2000 253.9089332003 210.00000157.485482128.33886118.134037 0.236363682.740898602.093049727.415 0.15
RATE 2.1720240 .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
50 0 0 -28 36 26 1 16 16 27 -14 -27 56 40 -29 16 11
48 0 0 -26 52 22 1 16 25 30 -16 -26 11 58 -27 32 45
46 0 0 -25 3 18 1 16 35 32 -19 -24 22 16 -25 44 19
44 0 0 -23 9 17 1 16 46 35 -21 -22 27 39 -23 50 54
42 0 0 -21 10 25 1 16 58 38 -23 -20 28 12 -21 52 38
40 0 0 -19 6 53 1 17 12 40 -26 -18 24 7 -19 49 39
38 0 0 -16 58 54 1 17 26 43 -29 -16 15 36 -17 42 11
36 0 0 -14 46 46 1 17 41 46 -31 -14 2 59 -15 30 32
34 0 0 -12 30 50 1 17 58 49 -34 -11 46 38 -13 15 2
32 0 0 -10 11 33 1 18 16 52 -37 - 9 26 59 -10 56 7
30 0 0 - 7 49 25 1 18 34 55 -39 - 7 4 31 - 8 34 17
28 0 0 - 5 24 57 1 18 54 58 -42 - 4 39 49 - 6 10 5
26 0 0 - 2 58 48 1 19 14 61 -45 - 2 13 29 - 3 44 5
24 0 0 - 0 31 33 1 19 35 64 -48 0 13 52 - 1 16 57
22 0 0 1 56 7 1 19 57 67 -50 2 41 34 1 10 41
20 0 0 4 23 33 1 20 19 70 -53 5 8 57 3 38 9
18 0 0 6 50 4 1 20 42 73 -55 7 35 22 6 4 48
16 0 0 9 15 4 1 21 5 76 -58 10 0 11 8 29 59
14 0 0 11 37 56 1 21 27 79 -60 12 22 49 10 53 6
12 0 0 13 58 7 1 21 50 82 -62 14 42 41 13 13 36
10 0 0 16 15 8 1 22 12 85 -64 16 59 19 15 30 58
8 0 0 18 28 30 1 22 34 87 -65 19 12 17 17 44 46
6 0 0 20 37 54 1 22 56 87 -67 21 21 12 19 54 37
4 0 0 22 42 59 1 23 17 85 -68 23 25 47 22 0 12
2 0 0 24 43 31 1 23 37 83 -69 25 25 47 24 1 17
0 0 0 26 39 21 1 23 57 81 -69 27 21 3 25 57 41
- 2 0 0 28 30 20 1 24 16 78 -69 29 11 27 27 49 16
- 4 0 0 30 16 25 1 24 34 76 -69 30 56 56 29 35 57
- 6 0 0 31 57 36 1 24 51 73 -69 32 37 29 31 17 44
- 8 0 0 33 33 52 1 25 8 71 -68 34 13 8 32 54 37
- 10 0 0 35 5 18 1 25 24 69 -68 35 43 58 34 26 40
- 12 0 0 36 31 59 1 25 39 67 -67 37 10 2 35 53 58
- 14 0 0 37 54 2 1 25 54 65 -66 38 31 28 37 16 37
- 16 0 0 39 11 34 1 26 7 63 -65 39 48 25 38 34 45
- 18 0 0 40 24 44 1 26 20 61 -63 41 0 60 39 48 30
- 20 0 0 41 33 41 1 26 33 59 -62 42 9 22 40 58 1
- 22 0 0 42 38 33 1 26 45 57 -61 43 13 42 42 3 26
- 24 0 0 43 39 31 1 26 56 55 -60 44 14 8 43 4 55
- 26 0 0 44 36 43 1 27 6 54 -59 45 10 50 44 2 38
- 28 0 0 45 30 20 1 27 17 52 -57 46 3 56 44 56 43
- 30 0 0 46 20 28 1 27 26 50 -56 46 53 37 45 47 20
- 32 0 0 47 7 19 1 27 35 49 -55 47 40 1 46 34 37
- 34 0 0 47 50 59 1 27 44 47 -54 48 23 16 47 18 42
- 36 0 0 48 31 36 1 27 52 46 -52 49 3 30 47 59 44
- 38 0 0 49 9 19 1 28 0 44 -51 49 40 50 48 37 49
- 40 0 0 49 44 14 1 28 8 43 -50 50 15 24 49 13 5
- 42 0 0 50 16 27 1 28 15 42 -49 50 47 18 49 45 38
- 44 0 0 50 46 5 1 28 22 40 -48 51 16 37 50 15 34
- 46 0 0 51 13 14 1 28 28 39 -47 51 43 29 50 42 59
- 48 0 0 51 37 58 1 28 34 38 -45 52 7 57 51 7 58
- 50 0 0 52 0 22 1 28 40 36 -44 52 30 7 51 30 37
- 52 0 0 52 20 30 1 28 46 35 -43 52 50 3 51 50 58
- 54 0 0 52 38 27 1 28 51 34 -42 53 7 48 52 9 6
- 56 0 0 52 54 15 1 28 56 33 -41 53 23 26 52 25 5
- 58 0 0 53 7 58 1 29 1 31 -40 53 37 0 52 38 57
- 60 0 0 53 19 39 1 29 6 30 -39 53 48 33 52 50 45
- 62 0 0 53 29 18 1 29 11 29 -38 53 58 6 53 0 31
- 64 0 0 53 36 59 1 29 15 28 -37 54 5 42 53 8 17
- 66 0 0 53 42 43 1 29 19 27 -36 54 11 22 53 14 4
- 68 0 0 53 46 30 1 29 23 26 -35 54 15 7 53 17 54
- 70 0 0 53 48 21 1 29 27 24 -34 54 16 57 53 19 46
- 72 0 0 53 48 17 1 29 31 23 -32 54 16 53 53 19 42
- 74 0 0 53 46 17 1 29 34 22 -31 54 14 54 53 17 41
- 76 0 0 53 42 21 1 29 38 21 -30 54 11 1 53 13 42
- 78 0 0 53 36 28 1 29 41 20 -29 54 5 11 53 7 45
- 80 0 0 53 28 37 1 29 44 18 -28 53 57 25 52 59 49
- 82 0 0 53 18 45 1 29 46 17 -27 53 47 40 52 49 51
- 84 0 0 53 6 51 1 29 49 16 -26 53 35 54 52 37 49
- 86 0 0 52 52 53 1 29 52 15 -25 53 22 4 52 23 41
- 88 0 0 52 36 46 1 29 54 14 -24 53 6 9 52 7 24
- 90 0 0 52 18 29 1 29 56 12 -22 52 48 3 51 48 55
- 92 0 0 51 57 56 1 29 58 11 -21 52 27 44 51 28 9
- 94 0 0 51 35 4 1 30 0 10 -20 52 5 6 51 5 2
- 96 0 0 51 9 47 1 30 2 8 -19 51 40 6 50 39 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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