Update for (804) Hispania - September 12, 2002 - South Africa
Update computed by Jan Manek; issued 08 Sep 2002 21:55:00 +0200 (CEST)
Jan Manek's update
IOTA/IOTA-ES occultation update for
(804) Hispania / TYC 7356-00322-1 on September 12, 2002
visible from South Africa and Mozambique
Summary
In the night of September 12/13, 2002 a 11.1 mag star TYC 7356-00322-1
will be occulted by a 141 km asteroid (804) Hispania. This update is based on
USNO/Flagstaff and TMO astrometry for the asteroid and UCAC1 star position.
The updated path shows ~1.5 path width south shift with time ~0.6 minutes earlier compared to
Edwin Goffin's nominal prediction.
Updated path runs over South Africa around ~20:07.3 UT with Cape Town on south limit while
Kimberley, Johannesburg and Pretoria are in path and later follows Mozambique ~20:07.6 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: September 12, 2002 @ 20:07 UT (south Africa)
* magnitude of target star: 11.1
* magnitude drop [mag]: 2.1
* estimated maximum duration [s]: 6.0
* path description: given above
* Goffin's original chart reference: A02_0953
The occultation path:
* approximate ground width [km]: 150
* uncertainty [path widths]: 1.3
* uncertainty in time [s]: 10
* 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 7356-00322-1
* constellation: Scorpius
* J2000 position [h,m,s; o,',"]: 16h 21m 03.4607s; -36o 44' 04.680"
* position source: UCAC1
* estimated accuracy ["]: 0.06" (0.055", 0.016")
* V mag [mag]: 11.09
* B-V [mag]: ????? possibly very red
* remarks:
Target star is in southwest Scorpius, about 6.3 degrees west of 2.3 mag star epsilon Scorpii = SAO 208078.
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.
Close finding chart (prepared in GUIDE7):
* occulted star is in center - labeled with cross
* field is 3.0x3.0 degrees
* limiting magnitude is 13.0
* labeled stars have indicated SAO numbers
* remarks:
Data for the minor planet:
* general information:
number, name: (804) Hispania
approx. diameter [km]: 141
* orbital information
orbit source: calculation Manek
source of used astrometry: USNO/Flagstaff (Ron Stone), TMO (Bill Owen)
number of used observations: 117 USNO, 9 TMO
number of rejected observations: 10 USNO, 1 TMO
time covered by the observations: 1998 07 17 - 2002 06 29
rms residuals ["] (RA,DE): 0.10", 0.15"
estimated positional accuracy at epoch of event ["]: 0.07", 0.08"
remarks:
Data for the event:
* UT date and time of least geocentric approach: 20:03.6 UT
* approx. V mag of minor planet at event [mag]: 13.0
* geocentric parallax of minor planet ["]: 3.432
* magnitude drop [mag]: 2.1
* estimated maximum duration [s]: 6.0
* apparent motion of minor planet ["/h]: 45.74
* angular distance to moon, phase of moon [deg,%]: 16, 40%
* remarks:
Elements for WinOccult:
============ cut here ===========================================
2002 Sep 12
804 Hispania
20h 3.6m UT
56-00322-1 11.1 16 21 3.461-36 44 4.68TYC 7356-00322-1
13.0 141 6.0 2.562 3.777 5.67
-47.291 -36.737 -121.85 4.00
20.0601 .04039 -.32676 13.22793 1.65220 0.00538 -0.00121
2000 312.7980182002 9 3.00000342.754611347.89672215.378473 0.141232982.838132582.437294667.845 0.18
RATE 2.0613660 .0000000 .0000000 .0000000 .00000000 .00000000 .00000000
============ cut here ===========================================
Calculator(s): Jan Manek
Path coordinates:
Latitude Latitude
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 ' "
12 0 0 -37 22 39 20 6 33 43 -37 -38 14 14 -36 31 23
13 0 0 -36 44 51 20 6 36 42 -38 -37 36 38 -35 53 25
14 0 0 -36 6 25 20 6 40 41 -39 -36 58 22 -35 14 49
15 0 0 -35 27 21 20 6 43 40 -40 -36 19 28 -34 35 34
16 0 0 -34 47 39 20 6 47 39 -41 -35 39 56 -33 55 43
17 0 0 -34 7 20 20 6 50 38 -42 -34 59 47 -33 15 15
18 0 0 -33 26 26 20 6 53 37 -43 -34 19 1 -32 34 13
19 0 0 -32 44 57 20 6 56 36 -44 -33 37 40 -31 52 36
20 0 0 -32 2 54 20 6 60 35 -45 -32 55 44 -31 10 26
21 0 0 -31 20 19 20 7 3 34 -46 -32 13 16 -30 27 44
22 0 0 -30 37 13 20 7 6 33 -47 -31 30 16 -29 44 32
23 0 0 -29 53 37 20 7 9 31 -49 -30 46 45 -29 0 50
24 0 0 -29 9 32 20 7 12 30 -50 -30 2 45 -28 16 41
25 0 0 -28 25 1 20 7 15 29 -51 -29 18 18 -27 32 6
26 0 0 -27 40 4 20 7 17 28 -52 -28 33 24 -26 47 7
27 0 0 -26 54 44 20 7 20 27 -53 -27 48 7 -26 1 44
28 0 0 -26 9 2 20 7 23 26 -54 -27 2 27 -25 16 0
29 0 0 -25 23 0 20 7 25 25 -56 -26 16 26 -24 29 58
30 0 0 -24 36 40 20 7 28 23 -57 -25 30 6 -23 43 37
31 0 0 -23 50 4 20 7 30 22 -58 -24 43 29 -22 57 2
32 0 0 -23 3 14 20 7 32 21 -59 -23 56 38 -22 10 13
33 0 0 -22 16 11 20 7 34 20 -60 -23 9 33 -21 23 12
34 0 0 -21 28 58 20 7 36 19 -62 -22 22 18 -20 36 2
35 0 0 -20 41 38 20 7 38 17 -63 -21 34 53 -19 48 45
36 0 0 -19 54 11 20 7 40 16 -64 -20 47 22 -19 1 22
37 0 0 -19 6 40 20 7 42 15 -65 -19 59 47 -18 13 56
38 0 0 -18 19 8 20 7 43 14 -66 -19 12 9 -17 26 29
39 0 0 -17 31 35 20 7 45 12 -68 -18 24 30 -16 39 3
40 0 0 -16 44 6 20 7 46 11 -69 -17 36 54 -15 51 40
41 0 0 -15 56 41 20 7 47 10 -70 -16 49 21 -15 4 22
42 0 0 -15 9 22 20 7 48 9 -71 -16 1 54 -14 17 11
43 0 0 -14 22 12 20 7 49 7 -73 -15 14 35 -13 30 10
44 0 0 -13 35 12 20 7 50 6 -74 -14 27 27 -12 43 19
45 0 0 -12 48 25 20 7 50 5 -75 -13 40 30 -11 56 42
........................... 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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