IOTA/IOTA-ES occultation update for
(166) Rhodope / HIP 49669 = SAO 98967 on October 18/19, 2005
visible from S Portugal, S Spain, S Italy, Greece and Turkey
Summary
In the morning of night of October 18/19, 2005 a bright 1.4 mag star HIP 49669 = SAO 98967 will be occulted by a 35 km asteroid (166) Rhodope. This update is based on USNO/Flagstaff astrometry for the asteroid and HIP star position.
Updated path runs over S Portugal ~4:23.8 UT, S Spain ~4:23.9 UT, S Italy ~4:24.5 UT, Greece ~4:24.7 UT and Turkey ~4:25.0 UT. Please check the path chart for details.
Possible some astrometry will be available ~2 weeks before the event. I will include it as it will be available, but don't expect any large shift.
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Clear sky and good luck !!!
The event at one glimpse:
* date and approx. UT time of event: October 19, 2005 @ 04:24 UT (Europe)
* magnitude of target star: 1.4
* magnitude drop [mag]: 14.1
* estimated maximum duration [s]: 1.1
* approx. V mag of minor planet at event [mag]: 15.5
* geocentric parallax of minor planet ["]: 2.862
* apparent motion of minor planet ["/h]: 51.59
* angular distance to moon, phase of moon [deg,%]: 102, 96%
* Goffin's original chart reference: AXX_XXXX
The occultation path with path maps:
* approximate ground width [km]: 40
* uncertainty [path widths]: 1.3
* uncertainty in time [s]: 6
* map: Overview
European part
* remarks: Path uncertainties [2 sigmas] are given according to nominal star
position errors and expected asteroid positional accuracy.
Elements for WinOccult - use 'Save as ...' to download and save these elements.
Finding charts (prepared in GUIDE8):
* occulted star is in center - labeled with cross
* labeled stars have indicated SAO numbers
* (smaller) square box shows 30' field in all wider field charts
* (larger) square box shows 3° field in wide field charts
* remarks:
Target star is in the brightest star in Leo - alpha Leonis = Regulus = SAO 98967 = PPM 127140.
!!! 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.
40-degree chart
3-degree chart
0.5-degree chart
Data for the target star:
* name: HIP 49669 = SAO 98967 = PPM 127140 = TYC 0833-01381-1
* constellation: Leo
* J2000 position [h,m,s; o,',"]: 10h 08m 22.2143s; +11d 58' 01.961"
* position source: HIP, parallax including
* estimated 1-sigma accuracy ["]: 0.013" (0.011", 0.007")
* V mag [mag]: 1.36 (HIP)
* B-V [mag]: -0.09 (TYC)
* remarks:
Data for the minor planet:
* general information:
number, name: (166) Rhodope
approx. diameter [km]: 35
* orbital information
orbit source: calculation Manek
source of used astrometry: USNO/Flagstaff (Ron Stone), Ondrejov (Kusnirak, Manek)
number of used observations: 114 USNO, 7 Ondrejov
number of rejected observations: 0
time covered by the observations: 1998 02 26 - 2005 10 08
estimated positional 2-sigma accuracy at epoch of event ["]: 0.064", 0.036", 97 deg
remarks:
* orbital elements
Semimajor axis = 2.68458418673982
Eccentricity = 0.212361653834265
Inclination = 12.0120898329577 deg
Long. of node = 129.1211055372199 deg
Arg. of pericenter = 264.0243114668402 deg
Mean anomaly = 74.1094363629116 deg
Epoch of elements : MJD 53662.18000000 TDT (Oct 19, 2005, 4.320000 h)
Path coordinates: click here
Calculator(s): Jan Manek
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Jan Manek
Werichova 950
152 00 Praha 5 - Barrandov |_|_|
Czech Republic / \
Internet : jan.manek AT worldonline.cz |-O-O-|
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