Update for (170) Maria - February 1/2, 2003
Update computed by Jan Manek; issued 26 Jan 2003 17:17 +0100 (CET)
Jan Manek's update
IOTA/IOTA-ES occultation update for
(170) Maria / TYC 1885-01254-1 on February 1/2, 2003
visible from frm.Yugoslavia, Bulgaria, Turkey, Iran, S Pakistan and India
Summary
In the night of February 1/2, 2003 a faint 10.8 mag star TYC 1885-01254-1
will be occulted by a 46 km asteroid (170) Maria. This update is based on
USNO/Flagstaff and TMO astrometry for the asteroid and recent UCAC star position.
The updated path shows ~7 path width south shift with time 0.6 minutes later compared to
Edwin Goffin's nominal prediction.
Updated path runs over frm.Yugoslavia ~16:37.5 UT, north Bulgaria ~16:38.3 UT, Turkey around 16:39.5 UT,
Iran 16:40-16:42 UT, S Pakistan ~16:42.6 UT and India around 16:43.8 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: February 1, 2003 @ 16:38 UT (Europe)
16:44 UT (India)
* magnitude of target star: 10.8
* magnitude drop [mag]: 3.3
* estimated maximum duration [s]: 3.1
* path description: given above
* Goffin's original chart reference: A03_0212
The occultation path:
* approximate ground width [km]: 50
* uncertainty [path widths]: 1.6
* uncertainty in time [s]: 5
* 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 1885-01254-1
* constellation: Aries
* J2000 position [h,m,s; o,',"]: 03h 03m 46.1915s; +30o 02' 29.586"
* position source: recent UCAC position combined with Tycho-2 proper motion
* estimated accuracy ["]: 0.02" (0.01", 0.02")
* V mag [mag]: 10.83
* B-V [mag]: +1.71
* remarks:
Target star is in north Aries, about 4.1 degrees NE 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 3.0x3.0 degrees
* limiting magnitude is 12.5
* labeled stars have indicated SAO numbers
* remarks:
Data for the minor planet:
* general information:
number, name: (170) Maria
approx. diameter [km]: 46
* orbital information
orbit source: calculation Manek
source of used astrometry: USNO/Flagstaff (Ron Stone), TMO (Bill Owen)
number of used observations: 110 USNO, 7 TMO
number of rejected observations: 21 USNO
time covered by the observations: 1997 05 31 - 2003 01 12
rms residuals ["] (RA,DE): 0.07", 0.07"
estimated positional accuracy at epoch of event ["]: 0.04", 0.04"
remarks:
Data for the event:
* UT date and time of least geocentric approach: 16:38.6 UT
* approx. V mag of minor planet at event [mag]: 14.0
* geocentric parallax of minor planet ["]: 4.319
* magnitude drop [mag]: 3.3
* estimated maximum duration [s]: 3.1
* apparent motion of minor planet ["/h]: 36.26
* angular distance to moon, phase of moon [deg,%]: 97, 0%
* remarks:
Elements for WinOccult:
============ cut here ===========================================
2003 Feb 01
170 Maria
16h 38.6m UT
39-00472-1 10.8 3 3 46.192 30 2 29.59TYC 2339-00472-1
14.0 46 3.1 2.036 2.681 -10.20
24.812 30.045 293.74 -17.08
16.6436 .06037 .20955 8.05569 -2.36324 0.00555 0.00143
2000 337.7613282003 131.00000158.606018301.50918214.412209 0.064043622.552617192.389138349.395 0.15
RATE 2.4167150 .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
12 0 0 45 38 38 16 36 58 71 -4 45 25 43 45 51 34
13 0 0 45 31 5 16 37 3 72 -5 45 18 9 45 44 2
14 0 0 45 23 4 16 37 9 72 -5 45 10 7 45 36 3
15 0 0 45 14 36 16 37 14 73 -6 45 1 37 45 27 36
16 0 0 45 5 40 16 37 20 73 -6 44 52 39 45 18 42
17 0 0 44 56 16 16 37 25 74 -7 44 43 13 45 9 20
18 0 0 44 46 24 16 37 31 74 -8 44 33 19 44 59 29
19 0 0 44 36 3 16 37 36 75 -8 44 22 56 44 49 10
20 0 0 44 25 13 16 37 42 75 -9 44 12 5 44 38 23
21 0 0 44 13 55 16 37 47 75 -10 44 0 44 44 27 6
22 0 0 44 2 7 16 37 53 76 -10 43 48 55 44 15 21
23 0 0 43 49 50 16 37 59 76 -11 43 36 35 44 3 6
24 0 0 43 37 4 16 38 4 76 -12 43 23 46 43 50 21
25 0 0 43 23 47 16 38 10 76 -12 43 10 27 43 37 7
26 0 0 43 10 0 16 38 16 77 -13 42 56 38 43 23 23
27 0 0 42 55 43 16 38 22 77 -14 42 42 19 43 9 8
28 0 0 42 40 55 16 38 28 77 -14 42 27 28 42 54 23
29 0 0 42 25 36 16 38 34 77 -15 42 12 7 42 39 7
30 0 0 42 9 46 16 38 40 77 -16 41 56 14 42 23 19
31 0 0 41 53 25 16 38 46 77 -17 41 39 50 42 7 0
32 0 0 41 36 31 16 38 52 77 -17 41 22 54 41 50 10
33 0 0 41 19 6 16 38 58 77 -18 41 5 25 41 32 47
34 0 0 41 1 8 16 39 4 77 -19 40 47 25 41 14 53
35 0 0 40 42 38 16 39 11 76 -20 40 28 51 40 56 25
36 0 0 40 23 35 16 39 17 76 -20 40 9 45 40 37 25
37 0 0 40 3 59 16 39 23 76 -21 39 50 6 40 17 52
38 0 0 39 43 49 16 39 30 75 -22 39 29 54 39 57 46
39 0 0 39 23 7 16 39 36 75 -23 39 9 8 39 37 6
40 0 0 39 1 50 16 39 42 74 -23 38 47 48 39 15 53
41 0 0 38 39 59 16 39 49 74 -24 38 25 54 38 54 5
42 0 0 38 17 35 16 39 55 73 -25 38 3 26 38 31 44
43 0 0 37 54 36 16 40 2 73 -26 37 40 24 38 8 48
44 0 0 37 31 2 16 40 9 72 -26 37 16 47 37 45 18
45 0 0 37 6 54 16 40 15 71 -27 36 52 36 37 21 13
46 0 0 36 42 11 16 40 22 71 -28 36 27 50 36 56 34
47 0 0 36 16 54 16 40 29 70 -29 36 2 29 36 31 20
48 0 0 35 51 1 16 40 35 69 -30 35 36 33 36 5 30
........................... shortened .............................
65 0 0 27 4 4 16 42 32 54 -45 26 48 44 27 19 26
66 0 0 26 28 16 16 42 39 53 -46 26 12 53 26 43 40
67 0 0 25 51 59 16 42 45 52 -47 25 36 34 26 7 25
68 0 0 25 15 15 16 42 52 51 -48 24 59 48 25 30 43
69 0 0 24 38 4 16 42 59 50 -49 24 22 35 24 53 34
70 0 0 24 0 27 16 43 5 49 -50 23 44 56 24 15 60
71 0 0 23 22 26 16 43 12 47 -51 23 6 53 23 38 0
72 0 0 22 44 2 16 43 18 46 -52 22 28 27 22 59 37
73 0 0 22 5 15 16 43 24 45 -52 21 49 39 22 20 52
74 0 0 21 26 7 16 43 30 44 -53 21 10 29 21 41 45
75 0 0 20 46 39 16 43 37 43 -54 20 31 0 21 2 19
76 0 0 20 6 52 16 43 43 42 -55 19 51 13 20 22 33
77 0 0 19 26 49 16 43 49 41 -56 19 11 8 19 42 31
78 0 0 18 46 29 16 43 54 40 -57 18 30 48 19 2 12
79 0 0 18 5 55 16 44 0 38 -58 17 50 13 18 21 39
80 0 0 17 25 8 16 44 6 37 -59 17 9 26 17 40 52
81 0 0 16 44 10 16 44 11 36 -60 16 28 27 16 59 54
82 0 0 16 3 1 16 44 16 35 -61 15 47 18 16 18 46
83 0 0 15 21 45 16 44 22 34 -62 15 6 2 15 37 29
84 0 0 14 40 21 16 44 27 32 -63 14 24 38 14 56 5
85 0 0 13 58 52 16 44 32 31 -64 13 43 10 14 14 36
........................... 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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