Update for (680) Genoveva - November 2/3, 2002
Update computed by Jan Manek; issued 27 Oct 2002 22:00:00 +0200 (CEST)
Jan Manek's update
IOTA/IOTA-ES occultation update for
(680) Genoveva / HIP 49947 = PPM 100154 on November 2/3, 2002
visible from Portugal, Spain, SE France, N Italy, Slovenia, Croatia,
S Hungary, N Romania and Moldavia
Summary
In the morning of night November 2/3, 2002 a 9.1 mag star HIP 49947 = PPM 100154
will be occulted by a 87 km asteroid (680) Genoveva. This update is based on
USNO/Flagstaff astrometry for the asteroid and Hipparcos star position.
The updated path shows about 2 path width south shift with time ~0.6 minutes later compared to
Edwin Goffin's nominal prediction.
Updated path runs over Portugal just north of Lisbon ~4:28.3 UT, Spain north of Madrid ~4:28.6 UT,
SE France around 4:29.0 UT with Marseille and Nice on south limit, N Italy ~4:29.3 UT,
Slovenia and Croatia around 4:29.7 UT, south Hungary ~4:29.8 UT, N Romania ~4:30.3 UT and Moldavia
in twilight ~4:30.4 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: November 3, 2002 @ 04:29 UT
* magnitude of target star: 9.1
* magnitude drop [mag]: 7.0
* estimated maximum duration [s]: 4.1
* path description: given above
* Goffin's original chart reference: A02_1133
The occultation path:
* approximate ground width [km]: 95
* uncertainty [path widths]: 3.0
* uncertainty in time [s]: 13
* map: below
* remarks: Path uncertainties are given according to nominal star
position errors and expected asteroid positional accuracy.
Data for the target star:
* name: HIP 49947 = PPM 100154 = TYC 1974-01031-1
* constellation: Leo Minor
* J2000 position [h,m,s; o,',"]: 10h 11m 51.2869s; +29o 28' 29.900"
* position source: Hipparcos
* estimated accuracy ["]: 0.02" (0.014", 0.011")
* V mag [mag]: 9.09
* B-V [mag]: +0.10
* remarks:
Target star is in SW Leo Minor, about 1.0 degrees west of 5.5 mag star 23 LMi = SAO 81258.
!!! 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 4.0x4.0 degrees
* limiting magnitude is 13.0
* labeled stars have indicated SAO numbers
* remarks:
Data for the minor planet:
* general information:
number, name: (680) Genoveva
approx. diameter [km]: 67
* orbital information
orbit source: calculation Manek
source of used astrometry: USNO/Flagstaff (Ron Stone)
number of used observations: 120 USNO
number of rejected observations: 17 USNO
time covered by the observations: 1998 03 12 - 2002 03 02
rms residuals ["] (RA,DE): 0.10", 0.11"
estimated positional accuracy at epoch of event ["]: 0.08", 0.08"
remarks: No recent opposition astrometry.
Data for the event:
* UT date and time of least geocentric approach: 04:31.3 UT
* approx. V mag of minor planet at event [mag]: 16.1
* geocentric parallax of minor planet ["]: 2.198
* magnitude drop [mag]: 7.0
* estimated maximum duration [s]: 4.1
* apparent motion of minor planet ["/h]: 26.33
* angular distance to moon, phase of moon [deg,%]: 53, 4%
* remarks:
Elements for WinOccult:
============ cut here ===========================================
2002 Nov 03
680 Genoveva
4h 31.3m UT
HIP 49947 9.1 10 11 51.287 29 28 29.90
16.1 87 4.1 4.001 2.015 -0.40
42.870 29.475 108.08 -15.00
4.5216 .00611 .31171 11.97431 -0.18345 -0.00531 0.00257
2000 224.167171200211 2.00000243.54191339.000871 17.563550 0.281635313.167868622.275684949.315 0.15
RATE 1.7480480 .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
- 17 0 0 36 32 47 4 27 45 39 -38 36 5 2 37 0 37
- 16 0 0 36 56 54 4 27 48 40 -37 36 29 13 37 24 39
- 15 0 0 37 20 33 4 27 51 41 -36 36 52 58 37 48 14
- 14 0 0 37 43 46 4 27 55 42 -35 37 16 15 38 11 21
- 13 0 0 38 6 31 4 27 58 43 -34 37 39 5 38 34 2
- 12 0 0 38 28 49 4 28 1 44 -33 38 1 28 38 56 15
- 11 0 0 38 50 40 4 28 5 44 -32 38 23 23 39 18 1
- 10 0 0 39 12 3 4 28 8 45 -32 38 44 51 39 39 20
- 9 0 0 39 32 59 4 28 11 46 -31 39 5 52 40 0 11
- 8 0 0 39 53 27 4 28 15 47 -30 39 26 25 40 20 34
- 7 0 0 40 13 28 4 28 18 48 -29 39 46 31 40 40 30
- 6 0 0 40 33 2 4 28 22 48 -28 40 6 9 40 59 59
- 5 0 0 40 52 8 4 28 25 49 -28 40 25 20 41 19 1
- 4 0 0 41 10 47 4 28 29 50 -27 40 44 4 41 37 35
- 3 0 0 41 28 59 4 28 32 51 -26 41 2 20 41 55 42
- 2 0 0 41 46 43 4 28 36 51 -25 41 20 9 42 13 22
- 1 0 0 42 4 1 4 28 39 52 -25 41 37 31 42 30 35
0 0 0 42 20 52 4 28 43 53 -24 41 54 26 42 47 21
1 0 0 42 37 15 4 28 46 54 -23 42 10 55 43 3 40
2 0 0 42 53 12 4 28 50 54 -22 42 26 56 43 19 33
3 0 0 43 8 43 4 28 53 55 -22 42 42 31 43 34 59
4 0 0 43 23 47 4 28 57 56 -21 42 57 39 43 49 59
5 0 0 43 38 24 4 29 0 56 -20 43 12 21 44 4 32
6 0 0 43 52 36 4 29 4 57 -19 43 26 36 44 18 39
7 0 0 44 6 21 4 29 7 58 -19 43 40 26 44 32 21
8 0 0 44 19 41 4 29 11 58 -18 43 53 49 44 45 36
9 0 0 44 32 35 4 29 15 59 -17 44 6 47 44 58 26
10 0 0 44 45 3 4 29 18 59 -16 44 19 19 45 10 50
11 0 0 44 57 5 4 29 22 60 -16 44 31 25 45 22 49
12 0 0 45 8 43 4 29 25 61 -15 44 43 6 45 34 23
13 0 0 45 19 55 4 29 29 61 -14 44 54 22 45 45 32
14 0 0 45 30 42 4 29 33 62 -14 45 5 13 45 56 16
15 0 0 45 41 5 4 29 36 62 -13 45 15 38 46 6 35
16 0 0 45 51 2 4 29 40 63 -12 45 25 39 46 16 29
17 0 0 46 0 35 4 29 43 64 -12 45 35 15 46 25 59
18 0 0 46 9 44 4 29 47 64 -11 45 44 27 46 35 5
19 0 0 46 18 28 4 29 50 65 -10 45 53 14 46 43 46
20 0 0 46 26 49 4 29 54 65 -10 46 1 37 46 52 4
21 0 0 46 34 45 4 29 58 66 -9 46 9 36 46 59 57
22 0 0 46 42 17 4 30 1 66 -8 46 17 11 47 7 27
23 0 0 46 49 25 4 30 5 66 -8 46 24 21 47 14 33
24 0 0 46 56 10 4 30 8 67 -7 46 31 9 47 21 16
25 0 0 47 2 31 4 30 12 67 -6 46 37 32 47 27 35
26 0 0 47 8 29 4 30 15 68 -6 46 43 32 47 33 30
27 0 0 47 14 4 4 30 19 68 -5 46 49 8 47 39 3
28 0 0 47 19 15 4 30 23 69 -5 46 54 21 47 44 12
29 0 0 47 24 3 4 30 26 69 -4 46 59 11 47 48 59
30 0 0 47 28 28 4 30 30 69 -3 47 3 37 47 53 22
........................... 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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