Update for (449) Hamburga - January 5/6, 2003
Update computed by Jan Manek; issued 31 Dec 2002 20:15 +0100 (CET)
Jan Manek's update
IOTA/IOTA-ES occultation update for
(449) Hamburga / TYC 0283-01002-1 on January 5/6, 2003
visible from Scotland, N Netherlands, N Germany, S Poland,
S Ukraine and S Russia
Summary
In the night of January 5/6, 2003 a 10.0 mag star TYC 0283-01002-1
will be occulted by a 89 km asteroid (449) Hamburga. This update is based on
USNO/Flagstaff and TMO astrometry for the asteroid and recent UCAC star position.
The updated path shows ~4 path width south shift with time 0.2 minutes later compared to
Edwin Goffin's nominal prediction.
Updated path runs just north of Ireland ~3:05.5 UT, Scotland ~3:05.8 UT with Glasgow on north limit,
N Netherlands ~3:06.5 UT, N Germany around 3:07.0 UT with Berlin in path while Hannover is on south limit
and Hamburg on north limit. Follows S Poland around ~3:07.6 UT with Wroclaw in path and Krakow on south limit.
Later follows S Ukraine around 3:08.8 UT and S Russia ~3:10.3 UT with Krasnodar on south limit and Stavropol in path.
Please check the path chart for details.
No recent opposition astrometry is available, the uncertainty may be larger than indicated.
Clear sky and good luck !!!
The event at one glimpse:
* date and approx. UT time of event: January 6, 2003 @ 03:07 UT (Europe)
* magnitude of target star: 10.0
* magnitude drop [mag]: 3.4
* estimated maximum duration [s]: 7.7
* path description: given above
* Goffin's original chart reference: A03_0141
The occultation path:
* approximate ground width [km]: 125
* uncertainty [path widths]: 1.1
* uncertainty in time [s]: 8
* 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 0283-01002-1
* constellation: Virgo
* J2000 position [h,m,s; o,',"]: 12h 08m 08.4458s; +03o 07' 53.253"
* position source: recent UCAC position combined with Tycho-2 proper motion
* estimated accuracy ["]: 0.01" (0.01", 0.01")
* V mag [mag]: 10.04
* B-V [mag]: +0.39
* remarks:
Recent UCAC position was provided by Marion and Norbert Zacharias.
Target star is in Virgo, about 4.6 degrees east of 3.6 mag star beta Virginis = SAO 119076
or 4.8 degrees northwest of 3.9 mag star eta Virginis = SAO 138721.
!!! 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: As the first chart is bit cluttered with SAO numbers, second one gives closer view.
Data for the minor planet:
* general information:
number, name: (449) Hamburga
approx. diameter [km]: 89
* orbital information
orbit source: calculation Manek
source of used astrometry: USNO/Flagstaff (Ron Stone), TMO (Bill Owen), Oak Ridge
number of used observations: 79 USNO, 6 TMO, 2 Oak Ridge
number of rejected observations: 14 USNO
time covered by the observations: 1990 02 27 - 2001 12 26
rms residuals ["] (RA,DE): 0.08", 0.08"
estimated positional accuracy at epoch of event ["]: 0.07", 0.07"
remarks: No recent opposition astrometry is available, the uncertainty may be larger than indicated.
Data for the event:
* UT date and time of least geocentric approach: 03:10.5 UT
* approx. V mag of minor planet at event [mag]: 13.4
* geocentric parallax of minor planet ["]: 5.285
* magnitude drop [mag]: 3.4
* estimated maximum duration [s]: 7.7
* apparent motion of minor planet ["/h]: 34.46
* angular distance to moon, phase of moon [deg,%]: 145, 12%
* remarks:
Elements for WinOccult:
============ cut here ===========================================
2003 Jan 06
449 Hamburga
3h 10.5m UT
83-01002-1 10.0 12 8 8.446 3 7 53.25TYC 0283-01002-1
13.4 89 7.7 1.664 2.220 -8.96
29.126 3.135 133.78 -22.55
3.1743 .17792 .65716 6.29565 -1.69677 -0.00504 0.00209
2000 14.03110792003 1 1.0000046.350554 86.054218 3.090114 0.171818962.552861472.114231469.475 0.15
RATE 2.4163687 .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
- 11 0 0 56 17 42 3 5 15 27 -48 55 44 12 56 51 31
- 10 0 0 56 9 58 3 5 19 28 -48 55 36 26 56 43 50
- 9 0 0 56 2 1 3 5 22 28 -47 55 28 26 56 35 55
- 8 0 0 55 53 51 3 5 26 29 -47 55 20 13 56 27 47
- 7 0 0 55 45 28 3 5 30 29 -47 55 11 47 56 19 27
- 6 0 0 55 36 51 3 5 34 30 -46 55 3 9 56 10 53
- 5 0 0 55 28 2 3 5 38 30 -46 54 54 17 56 2 7
- 4 0 0 55 19 0 3 5 42 31 -45 54 45 12 55 53 8
- 3 0 0 55 9 45 3 5 46 31 -45 54 35 55 55 43 55
- 2 0 0 55 0 17 3 5 50 32 -44 54 26 24 55 34 30
- 1 0 0 54 50 36 3 5 54 32 -44 54 16 40 55 24 52
0 0 0 54 40 42 3 5 59 33 -44 54 6 43 55 15 0
1 0 0 54 30 35 3 6 3 33 -43 53 56 34 55 4 56
2 0 0 54 20 15 3 6 8 34 -43 53 46 11 54 54 39
3 0 0 54 9 43 3 6 12 34 -42 53 35 36 54 44 9
4 0 0 53 58 57 3 6 17 35 -42 53 24 47 54 33 27
5 0 0 53 47 59 3 6 22 35 -41 53 13 46 54 22 31
6 0 0 53 36 47 3 6 27 36 -41 53 2 32 54 11 23
7 0 0 53 25 24 3 6 32 36 -40 52 51 6 54 0 1
8 0 0 53 13 47 3 6 37 37 -40 52 39 27 53 48 28
9 0 0 53 1 58 3 6 42 37 -39 52 27 35 53 36 41
10 0 0 52 49 56 3 6 47 38 -39 52 15 30 53 24 42
11 0 0 52 37 42 3 6 52 38 -38 52 3 13 53 12 31
12 0 0 52 25 15 3 6 58 39 -37 51 50 44 53 0 7
13 0 0 52 12 37 3 7 3 39 -37 51 38 3 52 47 31
14 0 0 51 59 46 3 7 9 39 -36 51 25 9 52 34 43
15 0 0 51 46 43 3 7 14 40 -36 51 12 4 52 21 42
16 0 0 51 33 28 3 7 20 40 -35 50 58 46 52 8 30
17 0 0 51 20 1 3 7 26 41 -34 50 45 17 51 55 5
18 0 0 51 6 22 3 7 32 41 -34 50 31 36 51 41 29
19 0 0 50 52 32 3 7 38 41 -33 50 17 44 51 27 42
20 0 0 50 38 31 3 7 44 42 -33 50 3 41 51 13 43
21 0 0 50 24 19 3 7 50 42 -32 49 49 26 50 59 33
22 0 0 50 9 55 3 7 56 43 -31 49 35 0 50 45 11
23 0 0 49 55 21 3 8 2 43 -31 49 20 24 50 30 39
24 0 0 49 40 36 3 8 9 43 -30 49 5 37 50 15 56
25 0 0 49 25 40 3 8 15 44 -29 48 50 39 50 1 2
26 0 0 49 10 35 3 8 22 44 -29 48 35 32 49 45 59
27 0 0 48 55 19 3 8 28 44 -28 48 20 14 49 30 45
28 0 0 48 39 54 3 8 35 45 -27 48 4 47 49 15 21
29 0 0 48 24 19 3 8 42 45 -27 47 49 11 48 59 48
30 0 0 48 8 35 3 8 49 45 -26 47 33 25 48 44 6
31 0 0 47 52 42 3 8 55 45 -25 47 17 31 48 28 14
32 0 0 47 36 40 3 9 2 46 -24 47 1 28 48 12 14
33 0 0 47 20 30 3 9 10 46 -24 46 45 16 47 56 5
34 0 0 47 4 12 3 9 17 46 -23 46 28 57 47 39 48
35 0 0 46 47 46 3 9 24 46 -22 46 12 30 47 23 23
36 0 0 46 31 13 3 9 31 46 -21 45 55 56 47 6 51
37 0 0 46 14 32 3 9 38 46 -21 45 39 15 46 50 12
38 0 0 45 57 45 3 9 46 47 -20 45 22 27 46 33 25
39 0 0 45 40 52 3 9 53 47 -19 45 5 33 46 16 33
40 0 0 45 23 53 3 10 1 47 -18 44 48 33 45 59 34
41 0 0 45 6 48 3 10 8 47 -18 44 31 28 45 42 29
42 0 0 44 49 37 3 10 16 47 -17 44 14 17 45 25 19
43 0 0 44 32 22 3 10 23 47 -16 43 57 2 45 8 5
44 0 0 44 15 3 3 10 31 47 -15 43 39 43 44 50 45
45 0 0 43 57 40 3 10 39 47 -14 43 22 19 44 33 22
46 0 0 43 40 13 3 10 46 47 -14 43 4 53 44 15 55
47 0 0 43 22 43 3 10 54 47 -13 42 47 23 43 58 25
48 0 0 43 5 10 3 11 2 47 -12 42 29 50 43 40 51
49 0 0 42 47 35 3 11 10 47 -11 42 12 16 43 23 16
50 0 0 42 29 58 3 11 17 46 -10 41 54 40 43 5 39
51 0 0 42 12 20 3 11 25 46 -10 41 37 2 42 47 60
52 0 0 41 54 41 3 11 33 46 -9 41 19 24 42 30 20
53 0 0 41 37 2 3 11 41 46 -8 41 1 45 42 12 40
54 0 0 41 19 22 3 11 49 46 -7 40 44 7 41 54 59
55 0 0 41 1 44 3 11 57 45 -6 40 26 29 41 37 20
56 0 0 40 44 6 3 12 4 45 -5 40 8 53 41 19 41
57 0 0 40 26 30 3 12 12 45 -5 39 51 18 41 2 3
58 0 0 40 8 56 3 12 20 45 -4 39 33 45 40 44 28
........................... 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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