Update for (667) Denise - January 7/8, 2002 - South Africa and Caribic
Update computed by Jan Manek; issued 04 Jan 2002 22:55:00 +0100 (CET)
Jan Manek's update
IOTA/IOTA-ES occultation update for
(667) Denise / TYC 5378-00407-1 on January 7/8, 2002
visible from Haiti, Dominican Rep. and Texas
Summary
In the night of January 7/8, 2002 a 11.1 mag star TYC 5378-00407-1 will be
occulted by a 84 km asteroid (667) Denise. This update is based on USNO/Flagstaff
astrometry for the asteroid and Tycho-2 star position.
The updated path shows ~0.8" south shift with time ~0.5 minutes earlier compared to
Edwin Goffin's nominal prediction.
Updated path now miss completely South Africa leaving only marginal chance for
Cape Town area ~00:59.3 UT. Around 1:07 UT path runs along very east Brazil with
some chance for Natal and Fortaleza. Then path runs to Caribic sea area with
St.Vincent ~1:10.8 UT, Haiti and Dominican Rep. around 1:12 UT, along eastern
coast of Cuba ~01:12.5 UT and finally Texas 01:13.5 UT just south of Houston.
Please check the path chart for details.
The event at one glimpse:
* date and approx. UT time of event: January 8, 2002 @ 00:59 UT (S.Africa)
01:13 UT (Caribic area)
* magnitude of target star: 11.1
* magnitude drop [mag]: 1.9
* estimated maximum duration [s]: 6.7
* path description: given above
* Goffin's original chart reference: A02_0142
The occultation path:
* approximate ground width [km]: 85
* uncertainty [path widths]: 2.1
* 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: TYC 5378-00407-1
* constellation: Monoceros
* J2000 position [h,m,s; o,',"]: 06h 42m 18.6787s; -08o 05' 21.424"
* position source: Tycho-2
* estimated accuracy ["]: 0.07" (0.05", 0.05")
* V mag [mag]: 11.07
* B-V [mag]: +0.21
* remarks:
Target star is in south Monoceros, 8.7 degrees north of Sirius.
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
Data for the minor planet:
* general information:
number, name: (667) Denise
approx. diameter [km]: 84
* orbital information
orbit source: calculation Manek
source of used astrometry: USNO/Flagstaff (Ron Stone)
number of used observations: 95 USNO
number of rejected observations: 5 USNO
time covered by the observations: 1998 03 22 - 2001 12 19
rms residuals ["] (RA,DE): 0.12", 0.12"
estimated positional accuracy at epoch of event ["]: 0.08", 0.08"
remarks:
Data for the event:
* UT date and time of least geocentric approach: 01:05.3 UT
* approx. V mag of minor planet at event [mag]: 12.8
* geocentric parallax of minor planet ["]: 5.247
* magnitude drop [mag]: 1.9
* estimated maximum duration [s]: 6.7
* apparent motion of minor planet ["/h]: 37.10
* angular distance to moon, phase of moon [deg,%]: 117, 30%
* 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 ' "
24 0 0 -37 48 24 0 58 45 39 -21 -37 24 12 -38 12 38
22 0 0 -37 13 15 0 58 55 41 -22 -36 48 53 -37 37 38
20 0 0 -36 35 53 0 59 5 43 -23 -36 11 21 -37 0 26
18 0 0 -35 56 15 0 59 15 44 -25 -35 31 32 -36 20 58
16 0 0 -35 14 19 0 59 26 46 -26 -34 49 26 -35 39 14
14 0 0 -34 30 5 0 59 38 48 -28 -34 5 1 -34 55 11
12 0 0 -33 43 31 0 59 50 50 -29 -33 18 15 -34 8 48
10 0 0 -32 54 35 1 0 2 52 -31 -32 29 8 -33 20 3
8 0 0 -32 3 16 1 0 15 53 -32 -31 37 38 -32 28 56
6 0 0 -31 9 34 1 0 29 55 -34 -30 43 44 -31 35 26
........................... shortened .............................
- 30 0 0 - 8 53 30 1 5 58 83 -56 - 8 25 4 - 9 21 58
- 32 0 0 - 7 24 47 1 6 19 81 -56 - 6 56 19 - 7 53 16
- 34 0 0 - 5 55 35 1 6 40 79 -56 - 5 27 6 - 6 24 5
- 36 0 0 - 4 26 7 1 7 1 77 -56 - 3 57 39 - 4 54 36
- 38 0 0 - 2 56 36 1 7 22 75 -56 - 2 28 9 - 3 25 4
- 40 0 0 - 1 27 13 1 7 43 73 -56 - 0 58 49 - 1 55 39
- 42 0 0 0 1 47 1 8 3 70 -56 0 30 8 - 0 26 35
- 44 0 0 1 30 14 1 8 23 68 -55 1 58 31 1 1 57
........................... shortened .............................
- 58 0 0 11 17 52 1 10 30 51 -48 11 45 14 10 50 28
- 60 0 0 12 35 21 1 10 46 49 -47 13 2 34 12 8 7
- 62 0 0 13 50 50 1 11 1 47 -46 14 17 52 13 23 47
- 64 0 0 15 4 12 1 11 15 45 -44 15 31 3 14 37 20
- 66 0 0 16 15 22 1 11 29 42 -43 16 42 2 15 48 42
- 68 0 0 17 24 16 1 11 41 40 -41 17 50 44 16 57 48
- 70 0 0 18 30 50 1 11 54 38 -40 18 57 6 18 4 33
- 72 0 0 19 35 1 1 12 5 36 -38 20 1 5 19 8 56
- 74 0 0 20 36 47 1 12 16 34 -37 21 2 39 20 10 53
- 76 0 0 21 36 5 1 12 26 32 -35 22 1 45 21 10 23
- 78 0 0 22 32 54 1 12 35 30 -34 22 58 23 22 7 25
- 80 0 0 23 27 15 1 12 44 28 -32 23 52 32 23 1 57
- 82 0 0 24 19 5 1 12 52 26 -30 24 44 11 23 53 59
- 84 0 0 25 8 26 1 12 59 24 -29 25 33 21 24 43 31
- 86 0 0 25 55 18 1 13 6 22 -27 26 20 2 25 30 34
- 88 0 0 26 39 42 1 13 12 20 -26 27 4 14 26 15 8
- 90 0 0 27 21 37 1 13 17 18 -24 27 45 60 26 57 14
- 92 0 0 28 1 6 1 13 22 16 -23 28 25 19 27 36 53
- 94 0 0 28 38 10 1 13 27 14 -21 29 2 13 28 14 6
- 96 0 0 29 12 50 1 13 30 12 -20 29 36 44 28 48 54
- 98 0 0 29 45 6 1 13 34 11 -18 30 8 52 29 21 20
-100 0 0 30 15 1 1 13 36 9 -17 30 38 39 29 51 23
-102 0 0 30 42 37 1 13 38 7 -15 31 6 7 30 19 5
-104 0 0 31 7 53 1 13 40 5 -14 31 31 17 30 44 29
........................... 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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