Update for (416) Vaticana - January 5, 2002
Update computed by Jan Manek; issued 31 Dec 2001 19:05:00 +0100 (CET)
Jan Manek's update
IOTA/IOTA-ES occultation update for
(416) Vaticana/ SAO 59862 = TYC 2450-00492-1 on January 5, 2002
visible from China, Turkey and north Africa
Summary
In the evening of January 4, 2002 a 10.0 mag star SAO 59862 = TYC 2450-00492-1 will be
occulted by a 90 km asteroid (416) Vaticana. This update is based on
USNO/Flagstaff astrometry for the asteroid and Tycho-2 star position.
The updated path shows ~2.0 path width north shift with time ~0.9 minutes earlier compared to
Edwin Goffin's nominal prediction.
Updated path runs over China ~18:45 till 18:49 UT and Turkey ~18:52.5 UT to name
some countries. Of European countries has marginal chance of seeing occultation only
south Greece at 18:53.5 UT and Creta Island is in path that moment.
Please check the path chart for details.
The event at one glimpse:
* date and approx. UT time of event: January 5, 2002 @ 18:53 UT (Euro)
* magnitude of target star: 10.0
* magnitude drop [mag]: 2.7
* estimated maximum duration [s]: 5.7
* path description: given above
* Goffin's original chart reference: A02_0129
The occultation path:
* approximate ground width [km]: 90
* uncertainty [path widths]: 2.3
* uncertainty in time [s]: 15
* map: below
* remarks: Path uncertainities are given according to nominal star
position errors and expected asteroid positional accuracy.
Data for the target star:
* name: SAO 59862 = PPM 72539 = TYC 2450-00492-1
* constellation: Auriga
* J2000 position [h,m,s; o,',"]: 07h 11m 22.4194s; +35o 55' 21.721"
* position source: Tycho-2
* estimated accuracy ["]: 0.06" (0.035", 0.044")
* V mag [mag]: 9.98
* B-V [mag]: +1.43
* remarks:
Target star is in east Auriga, about 6.3 degrees NW of 2.0 mag star alpha
Geminorum = Castor = SAO 60198. Target star is 17' SW of 7.8 mag star
SAO 59882 and forms a nice pair with 9.9 mag star GSC 2450.1000 which is
only 2.9' NW of target.
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
Data for the minor planet:
* general information:
number, name: (416) Vaticana
approx. diameter [km]: 90
* orbital information
orbit source: calculation Manek
source of used astrometry: USNO/Flagstaff (Ron Stone)
number of used observations: 83 USNO
number of rejected observations: 14 USNO
time covered by the observations: 1998 02 05 - 2001 12 17
rms residuals ["] (RA,DE): 0.10", 0.08"
estimated positional accuracy at epoch of event ["]: 0.09", 0.08"
remarks:
Data for the event:
* UT date and time of least geocentric approach: 18:48.7 UT
* approx. V mag of minor planet at event [mag]: 12.6
* geocentric parallax of minor planet ["]: 3.784
* magnitude drop [mag]: 2.7
* estimated maximum duration [s]: 5.7
* apparent motion of minor planet ["/h]: 33.87
* angular distance to moon, phase of moon [deg,%]: 84, 54%
* remarks:
Calculator(s): Jan Manek
Path coordinates:
Latitude Latitude
Centre Altitude Path Limits
E. Longitude Latitude U.T. star sun Limit 1 Limit 2
........................... shortened .............................
o ' " o ' " h m s o o o ' " o ' "
126 0 0 15 35 36 18 44 3 46 -46 16 5 32 15 5 41
124 0 0 16 57 4 18 44 15 48 -49 17 26 47 16 27 21
122 0 0 18 16 15 18 44 27 50 -51 18 45 45 17 46 44
120 0 0 19 33 2 18 44 39 52 -53 20 2 19 19 3 45
118 0 0 20 47 23 18 44 52 55 -55 21 16 27 20 18 20
116 0 0 21 59 13 18 45 4 57 -57 22 28 3 21 30 24
114 0 0 23 8 30 18 45 17 59 -59 23 37 6 22 39 54
112 0 0 24 15 12 18 45 30 61 -61 24 43 33 23 46 50
110 0 0 25 19 17 18 45 43 63 -62 25 47 25 24 51 10
108 0 0 26 20 46 18 45 56 65 -64 26 48 39 25 52 53
106 0 0 27 19 38 18 46 8 67 -66 27 47 18 26 51 58
104 0 0 28 15 54 18 46 21 69 -67 28 43 20 27 48 28
102 0 0 29 9 34 18 46 34 71 -69 29 36 47 28 42 22
100 0 0 30 0 41 18 46 47 73 -70 30 27 40 29 33 42
98 0 0 30 49 15 18 46 59 75 -72 31 16 2 30 22 29
96 0 0 31 35 19 18 47 12 76 -73 32 1 53 31 8 45
94 0 0 32 18 54 18 47 24 78 -74 32 45 16 31 52 32
92 0 0 33 0 2 18 47 36 80 -75 33 26 13 32 33 52
90 0 0 33 38 46 18 47 48 82 -75 34 4 46 33 12 47
88 0 0 34 15 9 18 48 0 83 -76 34 40 57 33 49 20
86 0 0 34 49 11 18 48 12 85 -76 35 14 50 34 23 32
84 0 0 35 20 56 18 48 24 86 -76 35 46 25 34 55 26
82 0 0 35 50 25 18 48 36 87 -76 36 15 46 35 25 5
80 0 0 36 17 42 18 48 47 87 -76 36 42 54 35 52 30
78 0 0 36 42 47 18 48 59 87 -76 37 7 51 36 17 43
76 0 0 37 5 43 18 49 10 85 -75 37 30 40 36 40 46
74 0 0 37 26 32 18 49 21 84 -74 37 51 22 37 1 41
72 0 0 37 45 15 18 49 32 83 -74 38 9 59 37 20 30
70 0 0 38 1 53 18 49 43 81 -73 38 26 33 37 37 14
68 0 0 38 16 30 18 49 54 80 -72 38 41 4 37 51 55
66 0 0 38 29 4 18 50 5 78 -71 38 53 35 38 4 34
64 0 0 38 39 38 18 50 15 77 -69 39 4 5 38 15 12
62 0 0 38 48 13 18 50 26 75 -68 39 12 37 38 23 49
60 0 0 38 54 49 18 50 36 74 -67 39 19 11 38 30 27
58 0 0 38 59 27 18 50 46 72 -66 39 23 47 38 35 6
56 0 0 39 2 7 18 50 56 71 -65 39 26 26 38 37 47
54 0 0 39 2 49 18 51 6 69 -63 39 27 8 38 38 29
52 0 0 39 1 33 18 51 16 68 -62 39 25 53 38 37 13
50 0 0 38 58 20 18 51 26 66 -61 39 22 40 38 33 59
48 0 0 38 53 8 18 51 36 65 -59 39 17 30 38 28 45
46 0 0 38 45 57 18 51 46 63 -58 39 10 22 38 21 32
44 0 0 38 36 47 18 51 55 61 -57 39 1 15 38 12 19
42 0 0 38 25 36 18 52 5 60 -55 38 50 8 38 1 5
40 0 0 38 12 24 18 52 14 58 -54 38 36 60 37 47 48
38 0 0 37 57 9 18 52 23 57 -52 38 21 49 37 32 28
36 0 0 37 39 49 18 52 33 55 -51 38 4 35 37 15 2
34 0 0 37 20 23 18 52 42 54 -49 37 45 16 36 55 30
32 0 0 36 58 49 18 52 51 52 -48 37 23 49 36 33 50
30 0 0 36 35 6 18 52 60 50 -46 37 0 13 36 9 58
28 0 0 36 9 10 18 53 8 49 -45 36 34 25 35 43 55
26 0 0 35 41 0 18 53 17 47 -43 36 6 24 35 15 36
24 0 0 35 10 34 18 53 26 45 -42 35 36 7 34 45 0
22 0 0 34 37 48 18 53 34 44 -40 35 3 32 34 12 5
20 0 0 34 2 41 18 53 42 42 -38 34 28 35 33 36 47
18 0 0 33 25 10 18 53 50 40 -37 33 51 15 32 59 5
16 0 0 32 45 12 18 53 58 39 -35 33 11 29 32 18 56
14 0 0 32 2 45 18 54 6 37 -33 32 29 14 31 36 16
12 0 0 31 17 46 18 54 14 35 -31 31 44 27 30 51 4
10 0 0 30 30 12 18 54 21 33 -30 30 57 7 30 3 17
8 0 0 29 40 1 18 54 28 31 -28 30 7 10 29 12 53
6 0 0 28 47 11 18 54 35 29 -26 29 14 34 28 19 49
4 0 0 27 51 41 18 54 41 27 -24 28 19 17 27 24 4
2 0 0 26 53 27 18 54 48 25 -22 27 21 19 26 25 36
0 0 0 25 52 30 18 54 54 23 -20 26 20 36 25 24 24
- 2 0 0 24 48 49 18 54 59 21 -18 25 17 10 24 20 27
- 4 0 0 23 42 22 18 55 4 19 -16 24 10 58 23 13 46
- 6 0 0 22 33 11 18 55 9 17 -14 23 2 3 22 4 20
- 8 0 0 21 21 17 18 55 13 15 -12 21 50 24 20 52 11
- 10 0 0 20 6 42 18 55 17 12 -10 20 36 3 19 37 20
- 12 0 0 18 49 28 18 55 20 10 -7 19 19 4 18 19 52
........................... 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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