Update for (200) Dynamene - December 16/17, 2002
Update computed by Jan Manek; issued 13 Dec 2002 01:45:00 +0100 (CET)
Jan Manek's update
IOTA/IOTA-ES occultation update for
(200) Dynamene / TYC 1771-01085-1 = PPM 91773 on December 16/17, 2002
visible from Siberia, S Russia, Caucasus, Turkey and Egypt
Summary
In the night of December 16/17, 2002 a faint 10.1 mag star TYC 1771-01085-1 = PPM 91773
will be occulted by a 132 km asteroid (200) Dynamene. This update is based on
USNO/Flagstaff and TMO astrometry for the asteroid and Tycho-2 star position.
The updated path shows ~1.5 path width north shift with time 0.4 minutes later compared to
Edwin Goffin's nominal prediction.
Updated path runs over Siberia 18:43 -> 18:53 UT, S Russia, around 18:57 UT, Caucasus ~19:00,
Turkey ~19:02 UT and Egypt ~19:06 UT. Later path runs to SW over Africa.
Please check the path chart for details.
Clear sky and good luck !!!
The event at one glimpse:
* date and approx. UT time of event: December 16, 2002 @ 18:55 UT (S Russia)
* magnitude of target star: 10.1
* magnitude drop [mag]: 2.1
* estimated maximum duration [s]: 31.6
* path description: given above
* Goffin's original chart reference: A02_1222
The occultation path:
* approximate ground width [km]: 135
* uncertainty [path widths]: 0.7
* uncertainty in time [s]: 25
* 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 1771-01085-1 = PPM 91773
* constellation: Aries
* J2000 position [h,m,s; o,',"]: 02h 32m 48.0237s; +26o 09' 19.300"
* position source: Tycho-2
* estimated accuracy ["]: 0.06" (0.4", 0.4")
* V mag [mag]: 10.14
* B-V [mag]: +0.68
* remarks:
Target star is in N Aries, about 4 degrees west of 3.6 mag star 41 Arietis = SAO 75596.
!!! 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 2.0x2.0 degrees
* limiting magnitude is 13.0
* labeled stars have indicated SAO numbers
* remarks:
Data for the minor planet:
* general information:
number, name: (200) Dynamene
approx. diameter [km]: 132
* orbital information
orbit source: calculation Manek
source of used astrometry: USNO/Flagstaff (Ron Stone), TMO (Bill Owen)
number of used observations: 99 USNO, 17 TMO
number of rejected observations: 8 USNO
time covered by the observations: 1998 11 03 - 2002 12 09
rms residuals ["] (RA,DE): 0.07", 0.09"
estimated positional accuracy at epoch of event ["]: 0.05", 0.05"
remarks:
Data for the event:
* UT date and time of least geocentric approach: 19:08.0 UT
* approx. V mag of minor planet at event [mag]: 12.0
* geocentric parallax of minor planet ["]: 5.659
* magnitude drop [mag]: 2.1
* estimated maximum duration [s]: 31.6
* apparent motion of minor planet ["/h]: 13.32
* angular distance to moon, phase of moon [deg,%]: 14, 91%
* remarks:
Elements for WinOccult:
============ cut here ===========================================
2002 Dec 16
200 Dynamene
19h 8.0m UT
71-01085-1 10.1 2 32 48.024 26 9 19.30TYC 1771-01085-1
12.0 132 31.6 1.554 -0.469 -11.71
25.946 26.159 251.93 -23.33
19.1334 .02118 -.01175 -1.11985 -2.07143 0.00381 0.00043
2000 5.9652091720021212.0000085.809806 324.7764426.909751 0.131307872.737558822.378095798.265 0.15
RATE 2.1760000 .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
147 0 0 57 29 27 18 42 58 10 -31 58 12 13 56 46 39
145 0 0 58 10 42 18 43 4 11 -32 58 52 38 57 28 43
143 0 0 58 48 33 18 43 10 12 -33 59 29 44 58 7 21
141 0 0 59 23 17 18 43 17 13 -34 60 3 46 58 42 47
139 0 0 59 55 5 18 43 24 14 -34 60 34 55 59 15 13
137 0 0 60 24 8 18 43 32 16 -35 61 3 23 59 44 51
135 0 0 60 50 36 18 43 40 17 -36 61 29 19 60 11 51
133 0 0 61 14 38 18 43 48 18 -37 61 52 52 60 36 22
131 0 0 61 36 22 18 43 56 19 -38 62 14 10 60 58 33
129 0 0 61 55 55 18 44 5 20 -38 62 33 19 61 18 30
127 0 0 62 13 23 18 44 14 21 -39 62 50 25 61 36 19
125 0 0 62 28 51 18 44 23 22 -40 63 5 35 61 52 6
123 0 0 62 42 24 18 44 32 22 -40 63 18 52 62 5 55
121 0 0 62 54 6 18 44 42 23 -41 63 30 20 62 17 52
119 0 0 63 4 1 18 44 52 24 -42 63 40 2 62 27 59
117 0 0 63 12 11 18 45 2 25 -42 63 48 3 62 36 19
115 0 0 63 18 40 18 45 12 26 -43 63 54 23 62 42 55
113 0 0 63 23 28 18 45 23 27 -44 63 59 6 62 47 49
111 0 0 63 26 37 18 45 34 28 -44 64 2 11 62 51 3
109 0 0 63 28 9 18 45 45 29 -45 64 3 41 62 52 37
107 0 0 63 28 4 18 45 56 30 -45 64 3 36 62 52 31
105 0 0 63 26 22 18 46 8 30 -46 64 1 56 62 50 47
103 0 0 63 23 3 18 46 20 31 -46 63 58 41 62 47 24
101 0 0 63 18 6 18 46 32 32 -47 63 53 50 62 42 22
99 0 0 63 11 30 18 46 45 33 -48 63 47 22 62 35 38
97 0 0 63 3 14 18 46 58 34 -48 63 39 15 62 27 12
95 0 0 62 53 15 18 47 12 35 -49 63 29 29 62 17 2
93 0 0 62 41 32 18 47 26 36 -49 63 17 59 62 5 5
91 0 0 62 28 1 18 47 40 37 -50 63 4 43 61 51 18
89 0 0 62 12 39 18 47 56 38 -50 62 49 39 61 35 38
87 0 0 61 55 21 18 48 11 39 -51 62 32 42 61 18 1
85 0 0 61 36 5 18 48 28 40 -51 62 13 48 60 58 22
83 0 0 61 14 44 18 48 45 41 -52 61 52 51 60 36 37
81 0 0 60 51 13 18 49 3 42 -52 61 29 47 60 12 40
79 0 0 60 25 26 18 49 21 43 -53 61 4 29 59 46 24
77 0 0 59 57 16 18 49 41 44 -53 60 36 50 59 17 43
75 0 0 59 26 35 18 50 1 45 -54 60 6 43 58 46 28
73 0 0 58 53 16 18 50 22 46 -54 59 33 60 58 12 33
71 0 0 58 17 8 18 50 45 47 -55 58 58 30 57 35 46
69 0 0 57 38 2 18 51 9 48 -55 58 20 6 56 55 59
67 0 0 56 55 46 18 51 34 50 -56 57 38 34 56 12 60
65 0 0 56 10 10 18 52 0 51 -56 56 53 44 55 26 37
63 0 0 55 20 59 18 52 28 52 -57 56 5 23 54 36 37
61 0 0 54 28 1 18 52 58 54 -57 55 13 17 53 42 47
59 0 0 53 31 0 18 53 29 55 -57 54 17 12 52 44 52
57 0 0 52 29 41 18 54 3 57 -58 53 16 50 51 42 35
55 0 0 51 23 47 18 54 39 58 -58 52 11 56 50 35 41
53 0 0 50 12 60 18 55 16 60 -58 51 2 11 49 23 51
51 0 0 48 57 1 18 55 57 61 -58 49 47 18 48 6 48
49 0 0 47 35 32 18 56 40 63 -58 48 26 56 46 44 12
47 0 0 46 8 13 18 57 26 65 -58 47 0 46 45 15 44
45 0 0 44 34 44 18 58 15 67 -58 45 28 28 43 41 5
43 0 0 42 54 46 18 59 7 69 -58 43 49 43 41 59 55
41 0 0 41 8 1 19 0 2 71 -57 42 4 11 40 11 56
39 0 0 39 14 10 19 1 2 74 -57 40 11 34 38 16 52
37 0 0 37 12 59 19 2 4 76 -56 38 11 37 36 14 27
35 0 0 35 4 13 19 3 11 79 -55 36 4 4 34 4 28
33 0 0 32 47 43 19 4 21 81 -54 33 48 47 31 46 45
31 0 0 30 23 22 19 5 35 84 -52 31 25 38 29 21 13
29 0 0 27 51 9 19 6 53 86 -51 28 54 34 26 47 50
27 0 0 25 11 8 19 8 14 88 -49 26 15 40 24 6 40
25 0 0 22 23 27 19 9 38 86 -47 23 29 3 21 17 53
23 0 0 19 28 22 19 11 6 83 -45 20 35 0 18 21 45
21 0 0 16 26 17 19 12 35 79 -43 17 33 54 15 18 40
19 0 0 13 17 41 19 14 6 76 -40 14 26 13 12 9 6
17 0 0 10 3 11 19 15 38 72 -38 11 12 34 8 53 43
15 0 0 6 43 33 19 17 11 69 -35 7 53 43 5 33 15
13 0 0 3 19 39 19 18 43 65 -32 4 30 32 2 8 37
11 0 0 - 0 7 29 19 20 13 61 -29 1 3 60 - 1 19 12
9 0 0 - 3 36 46 19 21 41 57 -26 - 2 24 46 - 4 49 1
7 0 0 - 7 6 56 19 23 6 54 -23 - 5 54 33 - 8 19 37
5 0 0 -10 36 40 19 24 26 50 -20 - 9 24 3 -11 49 37
3 0 0 -14 4 36 19 25 42 46 -17 -12 51 55 -15 17 38
1 0 0 -17 29 19 19 26 52 42 -14 -16 16 46 -18 42 15
- 1 0 0 -20 49 27 19 27 55 38 -11 -19 37 13 -22 2 4
........................... 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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