Update for (234) Barbara - January 17/18, 2003
Update computed by Jan Manek; issued 05 Jan 2003 21:29 +0100 (CET)
Jan Manek's update
IOTA/IOTA-ES occultation update for
(234) Barbara / TYC 0814-01598-1 = PPM 125996 on January 17/18, 2003
visible from India, Turkey, NE Bulgaria, SW Romania, Hungary, SW Slovakia,
NE Austria, Czechia, Germany, Netherlands and Scotland
Summary
In the night of January 17/18, 2003 a bright 9.7 mag star TYC 0814-01598-1 = PPM 125996
will be occulted by a 45 km asteroid (234) Barbara. This update is based on
USNO/Flagstaff and TMO astrometry for the asteroid and recent UCAC star position.
The updated path shows ~5 path width north shift with time 0.2 minutes later compared to
Edwin Goffin's nominal prediction.
Updated path runs over south India around 23:56 UT, Turkey ~0:01.0 UT, NE Bulgaria ~0:01.9 UT,
SW Romania ~0:02.2 UT just south of Bucharest, Hungary ~0:02.7 UT with Budapest in path,
SW Slovakia ~0:02.9 UT with Bratislava in path, NE Austria ~0:03.0 UT with Vienna on south limit,
Czechia ~0:03.3 UT just south of Prague, middle Germany around 0:03.6 UT, Netherlands ~0:03.9 UT
and Scotland ~0:04.6 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 18, 2003 @ 00:03 UT (Europe)
* magnitude of target star: 9.7
* magnitude drop [mag]: 3.5
* estimated maximum duration [s]: 3.1
* path description: given above
* Goffin's original chart reference: A03_0127
The occultation path:
* approximate ground width [km]: 55
* uncertainty [path widths]: 1.6
* uncertainty in time [s]: 6
* map: below
* remarks: Path uncertainties are given according to nominal star
position errors and expected asteroid positional accuracy.
Data for the target star:
* name: PPM 125996 = TYC 0814-01598-1
* constellation: Cancer
* J2000 position [h,m,s; o,',"]: 08h 59m 57.3693s; +10o 16' 18.932"
* position source: recent UCAC position combined with Tycho-2 proper motion
* estimated accuracy ["]: 0.01" (0.01", 0.01")
* V mag [mag]: 9.74
* B-V [mag]: +0.19
* remarks:
Target star is in south Cancer, about 1.6 degrees south of 4.3 mag star alpha Cancri = SAO 98267.
!!! 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: (234) Barbara
approx. diameter [km]: 45
* orbital information
orbit source: calculation Manek
source of used astrometry: USNO/Flagstaff (Ron Stone), TMO (Bill Owen)
number of used observations: 92 USNO, 3 TMO
number of rejected observations: 7 USNO
time covered by the observations: 1998 10 29 - 2002 12 22
rms residuals ["] (RA,DE): 0.07", 0.07"
estimated positional accuracy at epoch of event ["]: 0.05", 0.05"
remarks:
Data for the event:
* UT date and time of least geocentric approach: 00:00.7 UT
* approx. V mag of minor planet at event [mag]: 13.2
* geocentric parallax of minor planet ["]: 4.614
* magnitude drop [mag]: 3.5
* estimated maximum duration [s]: 3.1
* apparent motion of minor planet ["/h]: 37.73
* angular distance to moon, phase of moon [deg,%]: 25, 100%
* remarks:
Elements for WinOccult:
============ cut here ===========================================
2003 Jan 18
234 Barbara
0h 0.7m UT
14-01598-1 9.7 8 59 57.369 10 16 18.93TYC 0814-01598-1
13.2 45 3.1 1.906 -2.230 18.45
17.822 10.267 182.37 -20.67
0.0115 .26055 .46474 -7.13349 3.99804 -0.00148 0.00111
2000 133.9138992003 111.00000191.907628144.65802115.348823 0.242925512.388203841.808048209.025 0.15
RATE 2.6705270 .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
84 0 0 11 2 59 -0 4 35 26 -13 11 18 42 10 47 18
83 0 0 11 29 35 -0 4 31 27 -14 11 45 22 11 13 51
82 0 0 11 56 43 -0 4 27 28 -15 12 12 34 11 40 56
81 0 0 12 24 22 -0 4 22 29 -16 12 40 16 12 8 31
80 0 0 12 52 31 -0 4 17 30 -17 13 8 29 12 36 37
79 0 0 13 21 10 -0 4 12 31 -18 13 37 11 13 5 12
78 0 0 13 50 19 -0 4 7 32 -19 14 6 23 13 34 17
77 0 0 14 19 55 -0 4 2 33 -20 14 36 3 14 3 50
76 0 0 14 49 60 -0 3 56 34 -21 15 6 12 14 33 51
75 0 0 15 20 32 -0 3 51 35 -22 15 36 47 15 4 20
74 0 0 15 51 30 -0 3 45 36 -23 16 7 50 15 35 15
73 0 0 16 22 55 -0 3 39 37 -24 16 39 18 16 6 35
72 0 0 16 54 44 -0 3 33 38 -25 17 11 11 16 38 21
71 0 0 17 26 58 -0 3 27 39 -26 17 43 28 17 10 31
........................... shortened .............................
42 0 0 34 42 58 0 0 4 57 -53 35 0 52 34 25 9
41 0 0 35 19 13 0 0 12 57 -53 35 37 7 35 1 23
40 0 0 35 55 17 0 0 19 58 -54 36 13 12 35 37 26
39 0 0 36 31 9 0 0 27 58 -54 36 49 6 36 13 17
38 0 0 37 6 49 0 0 34 58 -55 37 24 46 36 48 56
37 0 0 37 42 15 0 0 42 58 -56 38 0 12 37 24 21
36 0 0 38 17 26 0 0 49 58 -56 38 35 24 37 59 32
35 0 0 38 52 21 0 0 57 58 -57 39 10 19 38 34 27
34 0 0 39 26 59 0 1 4 57 -57 39 44 57 39 9 5
33 0 0 40 1 19 0 1 11 57 -57 40 19 17 39 43 25
32 0 0 40 35 20 0 1 18 57 -58 40 53 18 40 17 27
31 0 0 41 9 2 0 1 25 57 -58 41 26 59 40 51 9
30 0 0 41 42 23 0 1 32 57 -58 42 0 20 41 24 31
29 0 0 42 15 23 0 1 39 57 -59 42 33 19 41 57 31
28 0 0 42 48 0 0 1 46 56 -59 43 5 55 42 30 9
27 0 0 43 20 15 0 1 53 56 -59 43 38 8 43 2 25
26 0 0 43 52 5 0 1 59 56 -59 44 9 58 43 34 17
25 0 0 44 23 32 0 2 6 55 -60 44 41 23 44 5 46
24 0 0 44 54 34 0 2 12 55 -60 45 12 23 44 36 49
23 0 0 45 25 10 0 2 19 55 -60 45 42 58 45 7 27
22 0 0 45 55 21 0 2 25 54 -60 46 13 7 45 37 40
21 0 0 46 25 5 0 2 31 54 -60 46 42 49 46 7 26
20 0 0 46 54 22 0 2 37 53 -60 47 12 4 46 36 45
19 0 0 47 23 12 0 2 43 53 -60 47 40 51 47 5 38
18 0 0 47 51 35 0 2 49 52 -60 48 9 11 47 34 3
17 0 0 48 19 30 0 2 55 52 -60 48 37 3 48 1 60
16 0 0 48 46 56 0 3 0 52 -60 49 4 27 48 29 29
15 0 0 49 13 54 0 3 6 51 -60 49 31 23 48 56 30
14 0 0 49 40 24 0 3 11 51 -59 49 57 49 49 23 3
13 0 0 50 6 25 0 3 17 50 -59 50 23 47 49 49 7
12 0 0 50 31 57 0 3 22 50 -59 50 49 16 50 14 42
11 0 0 50 57 1 0 3 27 49 -59 51 14 16 50 39 49
10 0 0 51 21 35 0 3 32 49 -59 51 38 48 51 4 27
9 0 0 51 45 41 0 3 37 48 -58 52 2 50 51 28 36
8 0 0 52 9 17 0 3 42 48 -58 52 26 23 51 52 16
7 0 0 52 32 25 0 3 47 47 -58 52 49 27 52 15 27
6 0 0 52 55 4 0 3 51 46 -58 53 12 3 52 38 10
5 0 0 53 17 15 0 3 56 46 -57 53 34 9 53 0 23
4 0 0 53 38 56 0 4 0 45 -57 53 55 47 53 22 9
3 0 0 54 0 10 0 4 5 45 -57 54 16 57 53 43 26
2 0 0 54 20 55 0 4 9 44 -56 54 37 38 54 4 15
1 0 0 54 41 12 0 4 13 44 -56 54 57 51 54 24 35
0 0 0 55 1 0 0 4 17 43 -56 55 17 37 54 44 28
- 1 0 0 55 20 22 0 4 22 43 -55 55 36 54 55 3 53
- 2 0 0 55 39 16 0 4 25 42 -55 55 55 44 55 22 51
- 3 0 0 55 57 42 0 4 29 42 -55 56 14 7 55 41 21
- 4 0 0 56 15 42 0 4 33 41 -54 56 32 2 55 59 24
- 5 0 0 56 33 14 0 4 37 41 -54 56 49 31 56 17 1
- 6 0 0 56 50 21 0 4 40 40 -53 57 6 34 56 34 11
- 7 0 0 57 7 1 0 4 44 40 -53 57 23 10 56 50 55
- 8 0 0 57 23 15 0 4 47 39 -53 57 39 20 57 7 12
- 9 0 0 57 39 3 0 4 51 39 -52 57 55 5 57 23 5
- 10 0 0 57 54 26 0 4 54 38 -52 58 10 25 57 38 31
- 11 0 0 58 9 24 0 4 57 38 -51 58 25 19 57 53 33
- 12 0 0 58 23 58 0 5 1 37 -51 58 39 48 58 8 10
........................... 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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