Update for (241) Germania - September 3/4, 2002
Update computed by Jan Manek; issued 25 Aug 2002 18:55:00 +0200 (CEST)
Jan Manek's update
IOTA/IOTA-ES occultation update for
(241) Germania / TYC 1851-00054-1 on September 3/4, 2002
visible from N Egypt, middle East, Iraq, Iran, Turkmenia,
Uzbekistan and Khazachstan
Summary
In the night of September 3/4, 2002 a faint 11.5 mag star TYC 1851-00054-1
will be occulted by a 169 km asteroid (241) Germania. This update is based on
USNO/Flagstaff for the asteroid and recent UCAC star position.
The updated path shows ~1 path widths south shift with time ~0.7 minutes later compared to
Edwin Goffin's nominal prediction.
Updated path runs over Egypt ~23:06.8 UT, middle East ~23:07.2 UT, Iraq ~23:07.4 UT,
Iran ~23:07.8 UT, Turkmenia ~23:08.4 UT, Uzbekistan ~23:08.7 UT and Khazachstan ~23:09.4 UT
with Taskent ~23:08.9 UT and Almaty ~23:09.4 UT just south of path.
Please check the path chart for details.
Clear sky and good luck !!!
The event at one glimpse:
* date and approx. UT time of event: September 3, 2002 @ 23:08 UT
* magnitude of target star: 11.5
* magnitude drop [mag]: 2.0
* estimated maximum duration [s]: 8.2
* path description: given above
* Goffin's original chart reference: A02_0927
The occultation path:
* approximate ground width [km]: 185
* uncertainty [path widths]: 1.4
* 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 1851-00054-1
* constellation: Taurus
* J2000 position [h,m,s; o,',"]: 05h 19m 44.2586s; +25o 52' 46.695"
* position source: UCAC combined with Tycho-2 proper motion
* estimated accuracy ["]: 0.04" (0.030", 0.026")
* V mag [mag]: 11.49
* B-V [mag]: +1.98
* remarks:
Recent UCAC position was provided by Marion and Norbert Zacharias.
Target star is in north Taurus, about 3.1 degrees southwest of 1.7 mag star beta Tauri = SAO 77168.
!!! IMPORTANT !!!
GSC flags this entry as non-star and GSC position refers to photocenter of a pair os stars, where the
secondary star is ~14th mag and ~11" north of target.
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: Second chart is a RealSky image showing the double star in detail.
Data for the minor planet:
* general information:
number, name: (241) Germania
approx. diameter [km]: 169
* orbital information
orbit source: calculation Manek
source of used astrometry: USNO/Flagstaff (Ron Stone), Bordeaux-Floirac
number of used observations: 96 USNO, 1 Bordeaux
number of rejected observations: 14 USNO
time covered by the observations: 1988 04 01 - 2001 12 06
rms residuals ["] (RA,DE): 0.07", 0.08"
estimated positional accuracy at epoch of event ["]: 0.05", 0.07"
remarks: No recent opposition astrometry.
Data for the event:
* UT date and time of least geocentric approach: 23:11.4 UT
* approx. V mag of minor planet at event [mag]: 13.3
* geocentric parallax of minor planet ["]: 2.986
* magnitude drop [mag]: 2.0
* estimated maximum duration [s]: 8.2
* apparent motion of minor planet ["/h]: 34.54
* angular distance to moon, phase of moon [deg,%]: 37, 14%
* remarks:
Elements for WinOccult:
============ cut here ===========================================
2002 Sep 03
241 Germania
23h 11.4m UT
51-00054-1 11.5 5 19 44.259 25 52 46.70TYC 1851-00054-1
13.3 169 8.2 2.945 2.555 1.83
-250.823 25.879 -168.03 7.34
23.1897 -.01960 .38664 11.54729 0.61300 -0.00562 -0.00035
2000 64.22634722002 9 3.0000075.152555 271.0630745.518729 0.096609703.050191482.755513397.585 0.15
RATE 1.8501776 .0000000 .0000000 .0000000 .00000000 .00000000 .00000000
============ cut here ===========================================
Calculator(s): Jan Manek
Path coordinates:
Latitude Latitude
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 ' "
17 0 0 20 32 41 23 6 38 6 -62 19 36 22 21 29 27
18 0 0 21 2 47 23 6 38 7 -61 20 6 25 21 59 36
19 0 0 21 32 55 23 6 39 8 -61 20 36 30 22 29 47
20 0 0 22 3 3 23 6 40 9 -60 21 6 35 22 59 58
21 0 0 22 33 11 23 6 41 10 -59 21 36 41 23 30 8
22 0 0 23 3 17 23 6 42 11 -58 22 6 46 24 0 16
23 0 0 23 33 22 23 6 43 12 -58 22 36 48 24 30 22
24 0 0 24 3 23 23 6 45 13 -57 23 6 49 25 0 25
25 0 0 24 33 21 23 6 46 14 -56 23 36 45 25 30 24
26 0 0 25 3 14 23 6 48 15 -55 24 6 37 26 0 17
27 0 0 25 33 1 23 6 49 16 -55 24 36 24 26 30 4
28 0 0 26 2 41 23 6 51 17 -54 25 6 5 26 59 45
29 0 0 26 32 15 23 6 53 18 -53 25 35 39 27 29 18
30 0 0 27 1 40 23 6 55 19 -52 26 5 4 27 58 42
31 0 0 27 30 56 23 6 57 20 -51 26 34 22 28 27 58
32 0 0 28 0 3 23 6 59 21 -50 27 3 29 28 57 3
33 0 0 28 28 59 23 7 2 22 -49 27 32 27 29 25 57
34 0 0 28 57 43 23 7 4 23 -49 28 1 14 29 54 40
35 0 0 29 26 16 23 7 6 24 -48 28 29 49 30 23 10
36 0 0 29 54 36 23 7 9 25 -47 28 58 11 30 51 27
37 0 0 30 22 42 23 7 11 26 -46 29 26 21 31 19 30
38 0 0 30 50 35 23 7 14 27 -45 29 54 16 31 47 20
39 0 0 31 18 12 23 7 17 28 -44 30 21 57 32 14 53
40 0 0 31 45 34 23 7 19 29 -43 30 49 23 32 42 12
41 0 0 32 12 41 23 7 22 30 -42 31 16 34 33 9 14
42 0 0 32 39 30 23 7 25 31 -41 31 43 28 33 35 59
43 0 0 33 6 3 23 7 28 32 -41 32 10 5 34 2 27
44 0 0 33 32 17 23 7 31 33 -40 32 36 24 34 28 36
45 0 0 33 58 14 23 7 34 34 -39 33 2 26 34 54 28
46 0 0 34 23 52 23 7 37 35 -38 33 28 9 35 20 0
47 0 0 34 49 11 23 7 40 36 -37 33 53 34 35 45 13
48 0 0 35 14 10 23 7 44 36 -36 34 18 39 36 10 7
49 0 0 35 38 50 23 7 47 37 -35 34 43 25 36 34 40
50 0 0 36 3 9 23 7 50 38 -34 35 7 50 36 58 53
51 0 0 36 27 7 23 7 54 39 -34 35 31 55 37 22 45
52 0 0 36 50 45 23 7 57 40 -33 35 55 39 37 46 15
53 0 0 37 14 1 23 8 0 41 -32 36 19 2 38 9 25
54 0 0 37 36 55 23 8 4 42 -31 36 42 3 38 32 12
55 0 0 37 59 28 23 8 7 42 -30 37 4 43 38 54 38
56 0 0 38 21 39 23 8 11 43 -29 37 27 1 39 16 41
57 0 0 38 43 27 23 8 15 44 -28 37 48 56 39 38 22
58 0 0 39 4 53 23 8 18 45 -28 38 10 30 39 59 40
59 0 0 39 25 56 23 8 22 46 -27 38 31 40 40 20 36
60 0 0 39 46 37 23 8 25 46 -26 38 52 28 40 41 9
61 0 0 40 6 54 23 8 29 47 -25 39 12 53 41 1 18
62 0 0 40 26 49 23 8 33 48 -24 39 32 56 41 21 5
63 0 0 40 46 20 23 8 36 49 -23 39 52 35 41 40 29
64 0 0 41 5 28 23 8 40 49 -23 40 11 51 41 59 29
65 0 0 41 24 13 23 8 44 50 -22 40 30 43 42 18 6
66 0 0 41 42 35 23 8 48 51 -21 40 49 13 42 36 19
67 0 0 42 0 33 23 8 51 51 -20 41 7 18 42 54 10
68 0 0 42 18 8 23 8 55 52 -19 41 25 1 43 11 36
69 0 0 42 35 19 23 8 59 53 -19 41 42 20 43 28 40
70 0 0 42 52 7 23 9 3 53 -18 41 59 16 43 45 20
71 0 0 43 8 32 23 9 6 54 -17 42 15 48 44 1 37
72 0 0 43 24 33 23 9 10 55 -16 42 31 57 44 17 30
73 0 0 43 40 11 23 9 14 55 -15 42 47 43 44 33 1
74 0 0 43 55 26 23 9 18 56 -15 43 3 5 44 48 8
75 0 0 44 10 17 23 9 21 57 -14 43 18 4 45 2 52
76 0 0 44 24 46 23 9 25 57 -13 43 32 40 45 17 13
77 0 0 44 38 51 23 9 29 58 -12 43 46 52 45 31 10
78 0 0 44 52 33 23 9 33 58 -12 44 0 42 45 44 45
79 0 0 45 5 52 23 9 37 59 -11 44 14 8 45 57 57
80 0 0 45 18 49 23 9 40 59 -10 44 27 11 46 10 47
81 0 0 45 31 23 23 9 44 60 -9 44 39 52 46 23 13
82 0 0 45 43 34 23 9 48 60 -9 44 52 9 46 35 18
83 0 0 45 55 22 23 9 52 61 -8 45 4 4 46 46 59
84 0 0 46 6 48 23 9 56 61 -7 45 15 37 46 58 19
85 0 0 46 17 51 23 9 59 62 -6 45 26 46 47 9 16
86 0 0 46 28 32 23 10 3 62 -6 45 37 34 47 19 51
........................... 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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