Update for (70) Panopaea - December 18, 1998
Update computed by Jan Manek; issued 15 Dec 1998 12:07:27 +0100 (CET)
Jan Manek's update
IOTA/IOTA-ES occultation update for
(70) Panopaea / PPM 71626 event on 1998, December 18
visible from Russia, Latvia, southern Sweden, northern Denmark,
Scotland and North Ireland
Summary
On the night December 18, 1998 will be occulted 9.9 mag star by a 127km asteroid
(70) Panopaea. This update is based on USNO/Flagstaff and TMO astrometry for
asteroid and ACT star position. The updated path is about 4 path widths south of
Goffin's nominal path with -2 minutes time correction.
The event at one glimpse:
* date and approx. UT time of event: December, 18, 1998 @ 22:01 UT (Euro),
* magnitude of target star: 9.9
* magnitude drop [mag]: 2.7
* estimated maximum duration [s]: 8.6
* path description: After crossing China and cetral Asia the shadow enters
Russia ~21:58 UT, goes just north of Samara ~21:59 UT and Moscow ~22:00
UT. Riga (Latvia) is in the path ~22:01 UT. Shaortly after path
crosses southern Sweden, northern Denmark ~22:01:30 UT and hits Scotland
(St. Andrews) ~22:02:30 UT and barely miss North Ireland.
Due to uncertainities in path location observers from following areas may
have a chance to see this occultation : Lithuania, Estonia, very south
Finland, Baltic coast Poland and Germany, south Norway, middle and north
U.K. and Ireland.
The occultation path:
* approximate width [km]: 150
* uncertainty [path widths]: 1.5
* uncertainty in time [s]: 20
* map: see below
* remarks: Path uncertainities are given according to nominal star position
errors and expected asteroid positional accuracy.
!!!!!!!
Circles along the path are OCCULT exactly calculated centerline points.
!!!!!!!
Data for the target star:
* name: PPM 71626 = TYC 2430 00372 1
* constellation: Auriga
* J2000 position [h,m,s; o,',"]: 06h 27m 14.044s; +35o 25' 56.97"
* position source: ACT
* estimated accuracy ["]: 0.10"
* V mag [mag]: 9.9
* remarks: Target star is 2.8' east of 8.0 mag star SAO 59088 = PPM 71623; be
careful and don't confuse them ! The target star is approximately midway
between theta Gem and theta Aur.
Data for the minor planet:
* general information:
mumber, name: (70) Panopaea
approx. diameter [km]: 127
* orbital information
orbit source: calculation Manek
source of used astrometry: USNO/Flagstaff (Ron Stone), TMO (Bill Owen)
number of used observations: 15 USNO, 14 TMO
number of rejected observations: 0
time covered by the observations: 1997 11 08 - 1998 12 14
rms residuals ["] (RA,DE): 0.06", 0.04"
estimated positional accuracy at epoch of event ["]: 0.07"
remarks:
Data for the event:
* UT date and time of least geocentric approach: 21:59:00 UT
* approx. V mag of minor planet at event [mag]: 12.5
* geocentric parallax of minor planet ["]: 4.307
* magnitude drop [mag]: 2.7
* estimated maximum duration [s]: 8.6
* apparent motion of minor planet ["/h]: 35.78
* angular distance to moon, phase of moon [deg,%]: 161, 0%
* remarks:
Calculator(s): Manek
Path coordinates:
Only european continent part given here.
Altitude
E. Longitude Latitude U.T. star sun
+ 75 00 00 + 45 32 16 21 56 40 62 -48
+ 73 00 00 + 46 25 39 21 56 52 63 -49
+ 71 00 00 + 47 16 32 21 57 03 64 -50
+ 69 00 00 + 48 04 58 21 57 14 65 -50
+ 67 00 00 + 48 51 00 21 57 25 66 -51
+ 65 00 00 + 49 34 41 21 57 36 67 -52
+ 63 00 00 + 50 16 04 21 57 47 68 -53
+ 61 00 00 + 50 55 14 21 57 57 68 -53
+ 59 00 00 + 51 32 12 21 58 08 69 -54
+ 57 00 00 + 52 07 04 21 58 18 69 -54
+ 55 00 00 + 52 39 52 21 58 28 70 -55
+ 53 00 00 + 53 10 40 21 58 37 70 -55
+ 51 00 00 + 53 39 31 21 58 47 70 -56
+ 49 00 00 + 54 06 27 21 58 56 70 -56
+ 47 00 00 + 54 31 34 21 59 05 70 -56
+ 45 00 00 + 54 54 52 21 59 14 70 -56
+ 43 00 00 + 55 16 25 21 59 23 70 -57
+ 41 00 00 + 55 36 16 21 59 32 70 -57
+ 39 00 00 + 55 54 27 21 59 41 69 -57
+ 37 00 00 + 56 11 00 21 59 49 69 -57
+ 35 00 00 + 56 25 57 21 59 58 69 -57
+ 33 00 00 + 56 39 21 22 00 06 68 -57
+ 31 00 00 + 56 51 12 22 00 14 68 -56
+ 29 00 00 + 57 01 33 22 00 22 67 -56
+ 27 00 00 + 57 10 24 22 00 30 67 -56
+ 25 00 00 + 57 17 48 22 00 38 66 -56
+ 23 00 00 + 57 23 44 22 00 46 65 -56
+ 21 00 00 + 57 28 14 22 00 54 65 -55
+ 19 00 00 + 57 31 18 22 01 02 64 -55
+ 17 00 00 + 57 32 56 22 01 09 63 -55
+ 15 00 00 + 57 33 09 22 01 17 62 -54
+ 13 00 00 + 57 31 57 22 01 24 62 -54
+ 11 00 00 + 57 29 20 22 01 32 61 -54
+ 9 00 00 + 57 25 16 22 01 39 60 -53
+ 7 00 00 + 57 19 47 22 01 47 59 -53
+ 5 00 00 + 57 12 50 22 01 54 58 -52
+ 3 00 00 + 57 04 25 22 02 01 58 -51
+ 1 00 00 + 56 54 31 22 02 09 57 -51
- 1 00 00 + 56 43 06 22 02 16 56 -50
- 3 00 00 + 56 30 09 22 02 23 55 -50
- 5 00 00 + 56 15 38 22 02 31 54 -49
- 7 00 00 + 55 59 31 22 02 38 53 -48
- 9 00 00 + 55 41 46 22 02 45 52 -48
- 11 00 00 + 55 22 22 22 02 53 51 -47
- 13 00 00 + 55 01 14 22 03 00 50 -46
- 15 00 00 + 54 38 21 22 03 07 49 -45
- 17 00 00 + 54 13 39 22 03 14 48 -44
- 19 00 00 + 53 47 07 22 03 22 46 -43
- 21 00 00 + 53 18 39 22 03 29 45 -42
- 23 00 00 + 52 48 14 22 03 36 44 -41
- 25 00 00 + 52 15 47 22 03 44 43 -40
- 27 00 00 + 51 41 15 22 03 51 41 -39
- 29 00 00 + 51 04 35 22 03 58 40 -38
- 31 00 00 + 50 25 42 22 04 05 39 -37
----------------------------------------------------------------------------
Jan Manek
Stefanik Observatory Private :
Petrin 205 Werichova 950
118 46 Praha 1 152 00 Praha 5 - Barrandov |_|_|
Czech Republic Czech Republic / \
Internet : jmanek@mbox.vol.cz |-O-O-|
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