IOTA/IOTA-ES occultation update for
(361) Bononia / TYC 6763-01551-1 on January 24/25, 2004
visible from S England, France, Corse, Sardinia, Sicilia and NE Libya
Summary
In the night of January 24/25, 2004 a faint 11.0 mag star TYC 6763-01551-1 will be occulted by a 149 km asteroid (361) Bononia. This update is based on USNO/Flagstaff and TMO astrometry for the asteroid and UCAC2 star position.
The updated path shows ~5 path width south shift with time 0.1 minutes later compared to Edwin Goffin's nominal prediction.
Updated path runs due to south shift over S England ~4:53.0 UT, France ~4:53.2 UT, Corse and Sardinia ~4:53.3 UT, Sicilia ~4:53.6 UT and NE Libya ~4:54.1 UT. Please check the path chart for details.
Mentioned path location is for main body, campaing for observation occultation by it's satellite is organized by EAON.
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 25, 2004 @ 04:53 UT (Europe)
* magnitude of target star: 11.0
* magnitude drop [mag]: 4.8
* estimated maximum duration [s]: 6.4
* approx. V mag of minor planet at event [mag]: 15.8
* geocentric parallax of minor planet ["]: 1.866
* apparent motion of minor planet ["/h]: 24.60
* angular distance to moon, phase of moon [deg,%]: 112, 14%
* Goffin's original chart reference: A04_0126
The occultation path with path maps:
* approximate ground width [km]: 200
* uncertainty [path widths]: 0.9
* uncertainty in time [s]: 7
* map: Overview
European part
* remarks: Path uncertainties [1 sigma] 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 middle Gemini, about 2.7 degrees northwest of 3.0 mag star epsilon Geminorum = SAO 78682.
!!! 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: TYC 6763-01551-1
* constellation: Libra
* J2000 position [h,m,s; o,',"]: 15h 25m 54.2865s; -23o 52' 05.222"
* position source: UCAC2
* estimated accuracy ["]: 0.03" (0.02", 0.02")
* V mag [mag]: 10.98
* B-V [mag]: +1.7
* remarks: Probably red star.
Data for the minor planet:
* general information:
number, name: (361) Bononia
approx. diameter [km]: 149
* orbital information
orbit source: calculation Manek
source of used astrometry: USNO/Flagstaff (Ron Stone), TMO (Bill Owen)
number of used observations: 144 USNO, 3 TMO
number of rejected observations: 14
time covered by the observations: 1998 06 08 - 2003 05 28
rms residuals ["] (RA,DE): 0.09", 0.09"
estimated positional accuracy at epoch of event ["]: 0.04", 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
- 7 0 0 53 35 22 4 53 0 5 143 -31 52 17 6 54 55 57 50 1 24 57 27 49
- 6 0 0 52 54 20 4 53 0 6 143 -31 51 36 1 54 15 0 49 20 12 56 47 0
- 5 0 0 52 12 36 4 53 1 7 144 -30 50 54 14 53 33 18 48 38 21 56 5 23
- 4 0 0 51 30 11 4 53 2 8 145 -30 50 11 48 52 50 53 47 55 54 55 22 58
- 3 0 0 50 47 5 4 53 3 9 146 -29 49 28 44 52 7 47 47 12 52 54 39 49
- 2 0 0 50 3 22 4 53 3 9 147 -28 48 45 4 51 24 0 46 29 16 53 55 55
- 1 0 0 49 19 2 4 53 4 10 147 -28 48 0 49 50 39 35 45 45 8 53 11 18
0 0 0 48 34 8 4 53 6 11 148 -27 47 16 1 49 54 33 45 0 30 52 26 2
1 0 0 47 48 41 4 53 7 12 149 -26 46 30 42 49 8 58 44 15 24 51 40 7
2 0 0 47 2 44 4 53 8 13 150 -26 45 44 54 48 22 49 43 29 52 50 53 37
3 0 0 46 16 18 4 53 10 14 150 -25 44 58 40 47 36 11 42 43 56 50 6 32
4 0 0 45 29 26 4 53 12 15 151 -24 44 12 1 46 49 5 41 57 38 49 18 57
5 0 0 44 42 11 4 53 13 16 152 -24 43 25 0 46 1 34 41 11 0 48 30 53
6 0 0 43 54 34 4 53 15 18 153 -23 42 37 39 45 13 40 40 24 4 47 42 23
7 0 0 43 6 39 4 53 17 19 154 -22 41 50 1 44 25 26 39 36 54 46 53 30
8 0 0 42 18 28 4 53 20 20 154 -21 41 2 9 43 36 55 38 49 31 46 4 17
9 0 0 41 30 3 4 53 22 21 155 -20 40 14 4 42 48 8 38 1 58 45 14 46
10 0 0 40 41 27 4 53 24 22 156 -19 39 25 49 41 59 10 37 14 17 44 25 0
11 0 0 39 52 43 4 53 27 23 157 -19 38 37 27 41 10 2 36 26 31 43 35 3
12 0 0 39 3 54 4 53 30 24 158 -18 37 49 1 40 20 47 35 38 43 42 44 57
13 0 0 38 15 1 4 53 33 25 159 -17 37 0 32 39 31 29 34 50 53 41 54 46
14 0 0 37 26 9 4 53 36 26 159 -16 36 12 5 38 42 9 34 3 6 41 4 31
15 0 0 36 37 19 4 53 39 27 160 -15 35 23 41 37 52 51 33 15 24 40 14 17
16 0 0 35 48 34 4 53 42 28 161 -14 34 35 22 37 3 38 32 27 49 39 24 5
17 0 0 34 59 57 4 53 46 29 162 -13 33 47 12 36 14 32 31 40 23 38 34 0
18 0 0 34 11 30 4 53 49 30 163 -12 32 59 13 35 25 35 30 53 8 37 44 3
19 0 0 33 23 15 4 53 53 31 164 -11 32 11 26 34 36 50 30 6 8 36 54 17
20 0 0 32 35 16 4 53 57 32 165 -10 31 23 55 33 48 20 29 19 24 36 4 45
21 0 0 31 47 34 4 54 1 33 166 -9 30 36 42 33 0 7 28 32 58 35 15 30
22 0 0 31 0 12 4 54 5 34 167 -8 29 49 49 32 12 14 27 46 53 34 26 34
23 0 0 30 13 12 4 54 9 35 168 -7 29 3 18 31 24 42 27 1 10 33 37 59
24 0 0 29 26 35 4 54 13 36 169 -5 28 17 11 30 37 34 26 15 52 32 49 49
...................................... 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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