Update for (329) Svea - August 1, 2002
Update computed by Jan Manek; issued 30 Jul 2002 00:55:00 +0200 (CEST)
Jan Manek's update
IOTA/IOTA-ES occultation update for
(329) Svea / TYC 0496-02046-1 on August 1, 2002
visible from Russia, Caucasus, Turkey and Cyprus
Summary
In the evening of August 1, 2002 a faint 11.9 mag star TYC 0496-02046-1
will be occulted by a 81 km asteroid (329) Svea. This update is based on
USNO/Flagstaff and TMO astrometry for the asteroid and recent UCAC star position.
The updated path shows ~3 path widths SE shift with time ~0.6 minutes earlier compared to
Edwin Goffin's nominal prediction.
Updated path runs over Russia from northeast to southwest with Sverdlovsk on south limit ~18:09.2 UT,
while Kuybyshev and Volgograd are ~1 path north of limit. Follows east Caucasus ~18:12.2 UT, east Turkey
~18:13 UT, Cyprus ~18:13.7 UT and north African coast at Lybia/Egypt border ~18:15 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: August 1, 2002 @ 18:12 UT
* magnitude of target star: 11.9
* magnitude drop [mag]: 1.5
* estimated maximum duration [s]: 7.3
* path description: given above
* Goffin's original chart reference: A02_0828
The occultation path:
* approximate ground width [km]: 140
* uncertainty [path widths]: 1.1
* uncertainty in time [s]: 7
* 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 0496-02046-1
* constellation: Aquila
* J2000 position [h,m,s; o,',"]: 20h 18m 28.9846s; +01o 43' 04.683"
* position source: UCAC combined with Tycho-2 proper motion
* estimated accuracy ["]: 0.02" (0.012", 0.014")
* V mag [mag]: 11.87
* B-V [mag]: +0.56
* remarks:
Recent UCAC position was provided by Marion and Norbert Zacharias.
Target star is in east Aquila, about 3.1 degrees northeast of 3.3 mag star theta Aquilae = SAO 144150.
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: (329) Svea
approx. diameter [km]: 81
* orbital information
orbit source: calculation Manek
source of used astrometry: USNO/Flagstaff (Ron Stone), TMO (Bill Owen)
number of used observations: 99 USNO, 19 TMO
number of rejected observations: 4 USNO, 1 TMO
time covered by the observations: 1998 05 22 - 2002 07 21
rms residuals ["] (RA,DE): 0.08", 0.08"
estimated positional accuracy at epoch of event ["]: 0.06", 0.07"
remarks:
Data for the event:
* UT date and time of least geocentric approach: 18:11.9 UT
* approx. V mag of minor planet at event [mag]: 13.1
* geocentric parallax of minor planet ["]: 5.926
* magnitude drop [mag]: 1.5
* estimated maximum duration [s]: 7.3
* apparent motion of minor planet ["/h]: 37.35
* angular distance to moon, phase of moon [deg,%]: 96, 47%
* remarks:
Elements for WinOccult:
============ cut here ===========================================
2002 Aug 01
329 Svea
18h 11.9m UT
96-02046-1 11.9 20 18 28.985 1 43 4.68TYC 0496-02046-1
13.1 81 7.3 1.484 -2.084 -20.48
81.467 1.725 -91.39 17.92
18.1982 -.44009 .67169 -5.27233 -3.45385 0.00061 -0.00183
2000 69.17355892002 725.0000054.757504 178.55990015.884708 0.024259222.477092542.417000199.665 0.15
RATE 2.5280796 .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 ' "
67 0 0 64 15 13 18 8 12 27 -6 65 43 17 62 53 50
66 0 0 63 21 39 18 8 20 27 -7 64 48 0 62 1 39
65 0 0 62 27 40 18 8 27 28 -7 63 52 17 61 9 1
64 0 0 61 33 18 18 8 36 29 -8 62 56 13 60 16 3
63 0 0 60 38 40 18 8 44 29 -9 61 59 53 59 22 48
62 0 0 59 43 51 18 8 52 30 -9 61 3 23 58 29 21
61 0 0 58 48 54 18 9 1 31 -10 60 6 47 57 35 46
60 0 0 57 53 55 18 9 10 31 -11 59 10 11 56 42 7
59 0 0 56 58 57 18 9 20 32 -11 58 13 39 55 48 29
58 0 0 56 4 5 18 9 29 32 -12 57 17 14 54 54 54
57 0 0 55 9 21 18 9 39 33 -12 56 21 1 54 1 26
56 0 0 54 14 50 18 9 48 33 -13 55 25 3 53 8 9
55 0 0 53 20 35 18 9 58 34 -13 54 29 23 52 15 6
54 0 0 52 26 38 18 10 8 34 -13 53 34 5 51 22 19
53 0 0 51 33 2 18 10 19 35 -14 52 39 10 50 29 51
52 0 0 50 39 50 18 10 29 35 -14 51 44 42 49 37 45
51 0 0 49 47 4 18 10 39 35 -15 50 50 44 48 46 4
50 0 0 48 54 47 18 10 50 36 -15 49 57 16 47 54 49
49 0 0 48 3 0 18 11 0 36 -15 49 4 21 47 4 3
48 0 0 47 11 46 18 11 11 36 -15 48 12 2 46 13 47
47 0 0 46 21 7 18 11 21 36 -16 47 20 19 45 24 3
46 0 0 45 31 3 18 11 32 36 -16 46 29 15 44 34 54
45 0 0 44 41 37 18 11 43 36 -16 45 38 50 43 46 20
44 0 0 43 52 50 18 11 53 36 -16 44 49 7 42 58 23
43 0 0 43 4 42 18 12 4 36 -16 44 0 6 42 11 5
42 0 0 42 17 17 18 12 14 36 -16 43 11 48 41 24 26
41 0 0 41 30 34 18 12 25 36 -16 42 24 15 40 38 29
40 0 0 40 44 34 18 12 35 36 -16 41 37 28 39 53 13
39 0 0 39 59 19 18 12 45 36 -16 40 51 27 39 8 40
38 0 0 39 14 49 18 12 56 36 -16 40 6 13 38 24 51
37 0 0 38 31 6 18 13 6 35 -16 39 21 46 37 41 46
36 0 0 37 48 9 18 13 16 35 -16 38 38 9 36 59 27
35 0 0 37 5 60 18 13 26 35 -16 37 55 20 36 17 54
34 0 0 36 24 39 18 13 36 34 -15 37 13 21 35 37 8
33 0 0 35 44 6 18 13 46 34 -15 36 32 13 34 57 9
32 0 0 35 4 23 18 13 55 34 -15 35 51 55 34 17 58
31 0 0 34 25 29 18 14 5 33 -15 35 12 27 33 39 36
30 0 0 33 47 26 18 14 14 33 -14 34 33 52 33 2 2
29 0 0 33 10 12 18 14 23 32 -14 33 56 8 32 25 18
28 0 0 32 33 50 18 14 32 32 -14 33 19 15 31 49 23
27 0 0 31 58 19 18 14 41 31 -13 32 43 16 31 14 18
26 0 0 31 23 39 18 14 50 31 -13 32 8 8 30 40 4
25 0 0 30 49 50 18 14 58 30 -13 31 33 53 30 6 40
24 0 0 30 16 53 18 15 6 29 -12 31 0 31 29 34 7
23 0 0 29 44 48 18 15 14 29 -12 30 28 3 29 2 25
22 0 0 29 13 36 18 15 22 28 -11 29 56 27 28 31 34
21 0 0 28 43 15 18 15 30 27 -11 29 25 44 28 1 35
20 0 0 28 13 48 18 15 37 27 -10 28 55 55 27 32 27
19 0 0 27 45 12 18 15 45 26 -9 28 26 59 27 4 10
18 0 0 27 17 29 18 15 52 25 -9 27 58 57 26 36 46
17 0 0 26 50 39 18 15 59 24 -8 27 31 48 26 10 14
16 0 0 26 24 42 18 16 5 24 -8 27 5 33 25 44 33
15 0 0 25 59 38 18 16 12 23 -7 26 40 12 25 19 45
14 0 0 25 35 26 18 16 18 22 -6 26 15 44 24 55 49
13 0 0 25 12 8 18 16 24 21 -6 25 52 11 24 32 45
........................... 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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