Update for (185) Eunike - June 25/26, 2002
Update computed by Jan Manek; issued 16 Jun 2002 19:55:00 +0200 (CEST)
Jan Manek's update
IOTA/IOTA-ES occultation update for
(185) Eunike / TYC 0503-00797-1 on June 25/26, 2002
visible from Russia, Ukraine, Moldavia, Romania, Hungary,
frm. Yugoslavia, central Italy, Spain and Portugal
Summary
In the night of June 25/26, 2002 a faint 11.4 mag star TYC 0503-00797-1
will be occulted by a large 165 km asteroid (185) Eunike. This update is based on
USNO/Flagstaff and TMO astrometry for the asteroid and recent UCAC star position.
The updated path shows ~2.5 path width south shift with time ~1.3 minutes later compared to
Edwin Goffin's nominal prediction.
Updated path runs over Russia from northeast to southwest with Kazan on north limit
and Kuybyshev on south limit ~20:57.7 UT, Ukraine from NE to SW with Kharkov south of
central line ~20:59.9 UT and Kiev just north of path limit ~21:00.5 UT, Moldavia ~21:01.1 UT,
northwest Romania ~21:01.8 UT, southeast Hungary ~21:02.0 UT, frm. Yugoslavia around 21:02.5 UT
with Beograd in path an zagreb on north limit, central Italy with Rome on south limit ~21:03.6 UT,
Corse ~21:04.0 UT and finally Spain from NE to SW with Barcelona in path ~21:04.5 UT and Madrid
slightly later at ~21:05.0 UT, and Portugal with Lisabon ~21:05.5 UT at low altitude.
Please check the path chart for details.
Low uncertainty makes it good event on one hand, on the other hand star is faint having only 11.4 mag
and drop in brightness is 1.0 mag only. Complication may be also almost full Moon ~32 degrees away,
but fortunately it will be low in the sky. Clear sky and good luck !!!
The event at one glimpse:
* date and approx. UT time of event: June 25, 2002 @ 21:02 UT
* magnitude of target star: 11.4
* magnitude drop [mag]: 1.0
* estimated maximum duration [s]: 21.5
* path description: given above
* Goffin's original chart reference: A02_0617
The occultation path:
* approximate ground width [km]: 280
* uncertainty [path widths]: 0.4
* uncertainty in time [s]: 9
* 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 0503-00797-1
* constellation: Aquila
* J2000 position [h,m,s; o,',"]: 20h 09m 42.7889s; +03o 54' 56.981"
* position source: UCAC combined with Tycho-2 proper motion
* estimated accuracy ["]: 0.01" (0.011", 0.006")
* V mag [mag]: 11.40
* B-V [mag]: +0.24
* remarks:
Recent UCAC position was provided by Marion and Norbert Zacharias.
Target star is in mideast Aquila, about 6.7 degrees north of 3.3 mag star theta Aquilae = SAO 144150.
Only 2.6 degrees NE of target is 9.5 mag star PPM 169469.
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 2.5x2.5 degrees
* limiting magnitude is 12.5
* labeled stars have indicated SAO numbers
* remarks:
Data for the minor planet:
* general information:
number, name: (185) Eunike
approx. diameter [km]: 165
* orbital information
orbit source: calculation Manek
source of used astrometry: USNO/Flagstaff (Ron Stone), TMO (Bill Owen)
number of used observations: 91 USNO, 10 TMO
number of rejected observations: 4 USNO
time covered by the observations: 1998 07 28 - 2002 06 11
rms residuals ["] (RA,DE): 0.06", 0.07"
estimated positional accuracy at epoch of event ["]: 0.04", 0.05"
remarks:
Data for the event:
* UT date and time of least geocentric approach: 20:57.7 UT
* approx. V mag of minor planet at event [mag]: 11.8
* geocentric parallax of minor planet ["]: 4.888
* magnitude drop [mag]: 1.0
* estimated maximum duration [s]: 21.5
* apparent motion of minor planet ["/h]: 21.19
* angular distance to moon, phase of moon [deg,%]: 32, 99%
* remarks:
Elements for WinOccult:
============ cut here ===========================================
2002 Jun 25
185 Eunike
20h 57.7m UT
03-00797-1 11.4 20 9 42.789 3 54 56.98TYC 0503-00797-1
11.8 165 21.5 1.799 -1.356 -6.17
74.180 3.919 -133.75 23.37
20.9615 -.23481 .77495 -4.14816 -1.25894 -0.00236 -0.00247
2000 288.4116782002 625.00000223.152085154.05919423.250546 0.128036142.739048192.388351047.625 0.15
RATE 2.1742260 .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 ' "
68 0 0 60 11 21 20 55 9 34 -5 61 41 35 58 44 49
67 0 0 59 54 10 20 55 17 34 -5 61 24 26 58 27 37
66 0 0 59 36 49 20 55 25 34 -6 61 7 6 58 10 15
65 0 0 59 19 17 20 55 33 34 -6 60 49 34 57 52 42
64 0 0 59 1 36 20 55 41 34 -7 60 31 53 57 35 1
63 0 0 58 43 44 20 55 49 35 -7 60 14 1 57 17 10
62 0 0 58 25 44 20 55 57 35 -7 59 55 59 56 59 11
61 0 0 58 7 35 20 56 6 35 -8 59 37 48 56 41 4
60 0 0 57 49 17 20 56 14 35 -8 59 19 28 56 22 48
59 0 0 57 30 51 20 56 23 35 -9 59 0 59 56 4 25
58 0 0 57 12 18 20 56 31 35 -9 58 42 22 55 45 54
57 0 0 56 53 37 20 56 40 35 -9 58 23 38 55 27 17
56 0 0 56 34 49 20 56 49 35 -10 58 4 45 55 8 33
55 0 0 56 15 55 20 56 58 35 -10 57 45 46 54 49 44
54 0 0 55 56 55 20 57 7 36 -11 57 26 40 54 30 48
53 0 0 55 37 49 20 57 16 36 -11 57 7 29 54 11 48
52 0 0 55 18 38 20 57 25 36 -11 56 48 11 53 52 43
51 0 0 54 59 23 20 57 35 36 -12 56 28 49 53 33 34
50 0 0 54 40 3 20 57 44 36 -12 56 9 22 53 14 21
49 0 0 54 20 40 20 57 53 36 -12 55 49 51 52 55 5
48 0 0 54 1 14 20 58 3 36 -13 55 30 16 52 35 46
47 0 0 53 41 45 20 58 12 36 -13 55 10 39 52 16 24
46 0 0 53 22 14 20 58 22 36 -13 54 50 58 51 57 1
45 0 0 53 2 41 20 58 31 35 -14 54 31 16 51 37 37
44 0 0 52 43 7 20 58 41 35 -14 54 11 32 51 18 12
43 0 0 52 23 32 20 58 50 35 -14 53 51 47 50 58 46
42 0 0 52 3 58 20 59 0 35 -15 53 32 2 50 39 21
41 0 0 51 44 23 20 59 10 35 -15 53 12 17 50 19 56
40 0 0 51 24 50 20 59 19 35 -15 52 52 33 50 0 33
39 0 0 51 5 18 20 59 29 35 -15 52 32 50 49 41 11
38 0 0 50 45 49 20 59 39 34 -16 52 13 8 49 21 51
37 0 0 50 26 21 20 59 48 34 -16 51 53 29 49 2 35
36 0 0 50 6 57 20 59 58 34 -16 51 33 53 48 43 21
35 0 0 49 47 37 21 0 8 34 -16 51 14 20 48 24 11
34 0 0 49 28 20 21 0 17 34 -17 50 54 51 48 5 6
33 0 0 49 9 8 21 0 27 33 -17 50 35 27 47 46 5
32 0 0 48 50 2 21 0 37 33 -17 50 16 8 47 27 10
31 0 0 48 31 1 21 0 46 33 -17 49 56 54 47 8 20
30 0 0 48 12 6 21 0 56 32 -17 49 37 46 46 49 37
29 0 0 47 53 18 21 1 5 32 -17 49 18 45 46 31 1
28 0 0 47 34 37 21 1 15 32 -18 48 59 52 46 12 31
27 0 0 47 16 5 21 1 24 31 -18 48 41 6 45 54 10
26 0 0 46 57 40 21 1 33 31 -18 48 22 28 45 35 57
25 0 0 46 39 24 21 1 42 30 -18 48 3 59 45 17 53
24 0 0 46 21 17 21 1 52 30 -18 47 45 39 44 59 58
23 0 0 46 3 21 21 2 1 30 -18 47 27 30 44 42 13
22 0 0 45 45 34 21 2 10 29 -18 47 9 30 44 24 38
21 0 0 45 27 58 21 2 18 29 -18 46 51 41 44 7 14
20 0 0 45 10 34 21 2 27 28 -18 46 34 4 43 50 1
19 0 0 44 53 21 21 2 36 28 -18 46 16 38 43 32 60
18 0 0 44 36 20 21 2 44 27 -18 45 59 25 43 16 10
17 0 0 44 19 32 21 2 53 27 -18 45 42 24 42 59 33
16 0 0 44 2 57 21 3 1 26 -18 45 25 36 42 43 10
15 0 0 43 46 36 21 3 9 26 -18 45 9 3 42 26 59
14 0 0 43 30 28 21 3 17 25 -18 44 52 43 42 11 3
13 0 0 43 14 35 21 3 25 24 -17 44 36 38 41 55 20
12 0 0 42 58 57 21 3 32 24 -17 44 20 48 41 39 53
11 0 0 42 43 34 21 3 40 23 -17 44 5 13 41 24 40
10 0 0 42 28 26 21 3 47 23 -17 43 49 54 41 9 43
9 0 0 42 13 35 21 3 54 22 -17 43 34 51 40 55 2
8 0 0 41 59 0 21 4 1 21 -17 43 20 5 40 40 37
7 0 0 41 44 42 21 4 8 21 -16 43 5 36 40 26 29
6 0 0 41 30 42 21 4 15 20 -16 42 51 25 40 12 38
5 0 0 41 16 58 21 4 21 19 -16 42 37 32 39 59 4
4 0 0 41 3 33 21 4 27 19 -16 42 23 56 39 45 48
3 0 0 40 50 26 21 4 33 18 -15 42 10 40 39 32 50
2 0 0 40 37 38 21 4 39 17 -15 41 57 42 39 20 11
1 0 0 40 25 9 21 4 45 17 -15 41 45 3 39 7 50
0 0 0 40 12 60 21 4 50 16 -14 41 32 45 38 55 49
- 1 0 0 40 1 10 21 4 55 15 -14 41 20 46 38 44 7
- 2 0 0 39 49 40 21 5 0 14 -14 41 9 8 38 32 45
- 3 0 0 39 38 31 21 5 5 14 -13 40 57 50 38 21 43
- 4 0 0 39 27 42 21 5 10 13 -13 40 46 53 38 11 1
- 5 0 0 39 17 14 21 5 14 12 -12 40 36 18 38 0 40
- 6 0 0 39 7 8 21 5 18 12 -12 40 26 4 37 50 40
- 7 0 0 38 57 23 21 5 22 11 -11 40 16 12 37 41 2
- 8 0 0 38 47 60 21 5 25 10 -11 40 6 43 37 31 45
- 9 0 0 38 38 59 21 5 28 9 -11 39 57 35 37 22 50
- 10 0 0 38 30 21 21 5 31 8 -10 39 48 51 37 14 17
- 11 0 0 38 22 5 21 5 34 8 -10 39 40 30 37 6 6
- 12 0 0 38 14 12 21 5 37 7 -9 39 32 32 36 58 18
- 13 0 0 38 6 43 21 5 39 6 -8 39 24 57 36 50 53
- 14 0 0 37 59 36 21 5 41 5 -8 39 17 46 36 43 51
- 15 0 0 37 52 54 21 5 43 5 -7 39 10 59 36 37 13
- 16 0 0 37 46 35 21 5 44 4 -7 39 4 37 36 30 58
........................... 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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