Archive for the ‘Uncategorized’ Category

Highlights of Asteroid Occultations in Europe

Montag, März 23rd, 2015

Oliver Klös, IOTA/ES        Last update: 2018 June 16

Predictions calculated by Steve Preston, U.S.A.

http://asteroidoccultation.com

Upcoming Occultations:

Target star brighter than 9 mag

Prediction with high probability to make a positive observation

Preliminary prediction for asteroid’s moon by O. Klös

NEW! Predictions are using data from „Gaia DR2“ if available!

Day       UT        Asteroid            MaxDur             Star                  Vmag
                                                        sec

June 2018

23    00:23  (202) Chryseis     7.7     2UCAC 26335741     12.3

Last update: 2018 May 25
http://asteroidoccultation.com/2018_06/0623_202_55502.htm

July 2018

03   00:07     (4838) Billmclaughlin     2.9        4U 451-127135      7.8

Last update: 2018 May 15
http://asteroidoccultation.com/2018_07/0702_4838_58712.htm
04    01:56  (1015) Christa     7.2    TYC 6305-00788-1     11.1

Last update: 2018 May 15
http://asteroidoccultation.com/2018_07/0704_1015_55622.htm
05    03:06  (52) Europa     25.6        TYC 6318-01656-1     10.6

Last update: 2018 May 15
http://asteroidoccultation.com/2018_07/0705_52_55640.htm
10    01:30  (429) Lotis    7.7        TYC 5653-00622-1     11.4

Last update: 2018 May 22
http://asteroidoccultation.com/2018_07/0710_429_55704.htm
15    23:48     (294) Felicia     6.8       2UCAC 25197273      12.1

Last update: 2018 May 25
http://asteroidoccultation.com/2018_07/0715_294_55770.htm
17    00:01      (202) Chryseis        7.2       UCAC4-368-160251     11.9

Last update: 2018 May 24
http://asteroidoccultation.com/2018_07/0717_202_55788.htm
17    00:24      (268) Adorea      14.9       UCAC4-340-119766     11.8

Last update: 2018 May 24
http://asteroidoccultation.com/2018_07/0717_268_55790.htm
19   23:02     (198) Ampella      6.7       UCAC4-367-147344     12.5

Last update: 2018 May 24
http://asteroidoccultation.com/2018_07/0719_198_55822.htm
22   01:40     (611) Valeria      4.7       UCAC4-432-086993     12.5

Last update: 2018 May 25
http://asteroidoccultation.com/2018_07/0722_611_55852.htm
26   00:39     (97) Klotho      6.0      TYC 5713-00019-1     11.6

Last update: 2018 May 25
http://asteroidoccultation.com/2018_07/0726_97_55892.htm
26   01:10     (476) Hedwig     5.6      TYC 1769-01181-1     11.9

Last update: 2018 May 15
http://asteroidoccultation.com/2018_07/0726_476_55894.htm
27   03:15     (445) Edna    7.8      TYC 5756-01902-1     9.6

Last update: 2018 May 25
http://asteroidoccultation.com/2018_07/0727_445_55908.htm
30   00:08     (752) Sulamitis    6.5      TYC 6868-00904-1     11.7

Last update: 2018 May 25
http://asteroidoccultation.com/2018_07/0730_752_55926.htm
31   00:23     (119) Althaea    7.2      UCAC4-383-129348     11.2

Last update: 2018 May 25
http://asteroidoccultation.com/2018_07/0731_119_55942.htm
31   03:28     (539) Pamina    1.4      TYC 1804-00682-1       9.1

Last update: 2018 May 15
http://asteroidoccultation.com/2018_07/0731_539_57788.htm
31   19:03     (198) Ampella    9.0      UCAC4-370-142593       12.3

Last update: 2018 May 25
http://asteroidoccultation.com/2018_07/0731_198_55948.htm

August 2018

01   01:15     (86) Semele     10.6    TYC 6369-01011-1       11.3

Last update: 2018 Jun 12
http://asteroidoccultation.com/2018_08/0801_86_55950.htm
03   02:50     (3223) Forsius     1.4       HIP  8836      7.5

Last update: 2018 Jun 12
http://asteroidoccultation.com/2018_08/0803_3223_57712.htm
06   03:52     (643) Scheherezade     3.5    UCAC4-583-007874      11.9

Last update: 2018 Jun 12
http://asteroidoccultation.com/2018_08/0806_643_56004.htm
12   00:58     (510) Mabella     2.7    U4 539-7718   11.3

Last update: 2018 Jun 14
http://asteroidoccultation.com/2018_08/0812_510_58752.htm
12   23:15     (119) Althaea     11.4     UCAC4-380-129396      12.1

Last update: 2018 Jun 14
http://asteroidoccultation.com/2018_08/0812_119_56082.htm
15   01:16     (80) Sappho     3.1     UCAC4-560-009402      10.5

Last update: 2018 Jun 15
http://asteroidoccultation.com/2018_08/0815_80_56108.htm
Detailed path maps, star charts and potential observing sites for these events can be found at Derek C. Breit’s web page:

http://www.poyntsource.com/New/Global.htm

 

Preliminary Predictions:

Target star brighter than 9 mag

Day       UT        Asteroid            MaxDur            Star              Vmag
                                                           sec

September 2018

08   00:40     (654) Zelinda     18.2        HIP  7594      8.3
Last update: 2018 May 15
http://asteroidoccultation.com/2018_09/0908_654_56366.htm

October 2018

05   03:09     (7394) Xanthomalitia     3.6        HIP  31277     5.6
Last update: 2018 May 15
http://asteroidoccultation.com/2018_10/1005_7394_57676.htm

November 2018

08   00:53     (790) Pretoria    7.0        HIP  48351      6.4
Last update: 2018 May 15
http://asteroidoccultation.com/2018_11/1108_790_57678.htm
10   02:09     (1756) Giacobini    1.9        HIP  7358      6.7
Last update: 2018 May 15
http://asteroidoccultation.com/2018_11/1110_1756_57736.htm
28   22:44   (1339) Desagneauxa    2.3    TYC 2403-00937-1    8.5
Last update: 2018 May 15
http://asteroidoccultation.com/2018_11/1128_1339_57740.htm

December 2018

06   22:34   (3495) Colchagua   2.3    TYC 1341-02323-1    9.0
Last update: 2018 May 15
http://asteroidoccultation.com/2018_12/1206_3495_57940.htm
10   20:44   (479) Caprera   9.8     HIP 33753     7.7
Last update: 2018 May 15
http://asteroidoccultation.com/2018_12/1210_479_57398.htm
16   02:39   (1191) Alfaterna     3.8       HIP 32535       7.5
Last update: 2018 May 15
http://asteroidoccultation.com/2018_12/1216_1191_57452.htm
17   20:49   (2773) Brooks      1.5        TYC 1340-00835-1      8.9
Last update: 2018 May 15
http://asteroidoccultation.com/2018_12/1217_2773_57942.htm
21   18:33   (3995) Sakaino       1.2       HIP 22496       7.1
Last update: 2018 May 15
http://asteroidoccultation.com/2018_12/1221_3995_57742.htm
Detailed path maps, star charts and potential observing sites for these events can be found at Derek C. Breit’s web page:

http://www.poyntsource.com/New/Future.htm

Mittwoch, Februar 11th, 2009

Station Map for the Occultation by (105) Artemis at Thursday, 2009 January 15 (~ 21:34 UT)

V-Magnitude of target star TYC 5369-01307-1: 10.7 mag
Johnson B-V Colour Index: + 0.4
The UCAC2 gives a „pseudo-R magnitude“ of  10.8 mag

The max duration is expected to be 8.9 sec with a max drop of 2.2 mag.
The event will take place at an altitude of  34 deg and at azimuth 156 deg. The sun will be at an altitude of – 51 deg. (At predicted centre line for longitude 0 deg)

There is a 1 sigma uncertainty interval of  ± 0.31  path widths.
The probabilities to see a positive event:

Centre line: ~  90 %
Path limits: ~  50 %
1 sigma lines:  ~ 16 %
2 sigma lines: ~ 2 %

(Calculation according to Raymond Dusser, E.A.O.N. Circular #10)

PLEASE REMEMBER: Predictions are sometimes wrong. Please observe even with a small probability.
Let other observers know about you observing plans: Announce you station with OccultWatcher !

More information (coordinates, finder charts) at Steve Preston’s prediction:
http://asteroidoccultation.com/2009_01/0115_105_17170.htm

Table of potential observing stations and cities with distance from center of predicted path (Derek C. Breit):
http://www.poyntsource.com/New/Google/20090115_17170_Sites.txt

Map and Coordinates at the web page of  E.A.O.N. (not updated with Steve Preston’s data) :
http://astrosurf.com/eaon/Occultations%20January.htm

Good luck with your observation!

Oliver Klös

IOTA-ES

(105) Artemis, 2009 Jan 15, Station Map

Mittwoch, Februar 11th, 2009

Station Maps for the Occultation by (639) Latona at Thursday, 2009 January 15 (~ 21:08 UT)

EAST and WEST

V-Magnitude of target star TYC 1864-00746-1: 10.4 mag
Johnson B-V Colour Index: + 0.3
The UCAC2 gives a „pseudo-R magnitude“ of  10.3 mag

The max duration is expected to be 6.3 sec with a max drop of 2.6 mag.
The event will take place at an altitude of  64 deg and at azimuth 162 deg. The sun will be at an altitude of – 51 deg. (At predicted centre line for longitude E 10 deg)

There is a 1 sigma uncertainty interval of  ±  0.50 path widths.
The probabilities to see a positive event:

Centre line: ~  68 %
Path limits: ~  48 %
1 sigma lines:  ~ 16 %
2 sigma lines: ~ 2 %

(Calculation according to Raymond Dusser, E.A.O.N. Circular #10)

PLEASE REMEMBER: Predictions are sometimes wrong. Please observe even with a small probability.
Let other observers know about you observing plans: Announce you station with OccultWatcher !

More information (coordinates, finder charts) at Steve Preston’s prediction:
http://asteroidoccultation.com/2009_01/0115_639_17169.htm

Table of potential observing stations and cities with distance from center of predicted path (Derek C. Breit):
http://www.poyntsource.com/New/Google/20090115_17169_Sites.txt

Map and Coordinates at the web page of  E.A.O.N. (not updated with Steve Preston’s data) :
http://astrosurf.com/eaon/Occultations%20January.htm

Good luck with your observation!

Oliver Klös

IOTA-ES

(639) Latona, 2009 Jan 15, Station Map WEST(639) Latona, 2009 Jan 15, Station Map EAST

Mittwoch, Februar 11th, 2009

Station Map for the Occultation by (4711) Kathy at Thursday, 2009 January 15 (~ 18:30 UT)

V-Magnitude of target star TYC 0042-01409-1: 9.1 mag
Johnson B-V Colour Index: + 1.1
Spectral type K0
The UCAC2 gives a „pseudo-R magnitude“ of  8.9 mag

The max duration is expected to be 0.7 sec with a max drop of 6.9 mag.
The event will take place at an altitude of  41 deg and at azimuth 177 deg. The sun will be at an altitude of – 20 deg. (At predicted centre line for longitude 0 deg)

There is a 1 sigma uncertainty interval of  ±  3.86 path widths.
The probabilities to see a positive event:

Centre line: ~  10 %
Path limits: ~  10 %
1 sigma lines:  ~ 6 %
2 sigma lines: ~ 1 %

(Calculation according to Raymond Dusser, E.A.O.N. Circular #10)

PLEASE REMEMBER: Predictions are sometimes wrong. Please observe even with a small probability.
Let other observers know about you observing plans: Announce you station with OccultWatcher !

More information (coordinates, finder charts) at Steve Preston’s prediction:
http://asteroidoccultation.com/2009_01/0115_4711_18999.htm

Table of potential observing stations and cities with distance from center of predicted path (Derek C. Breit):
http://www.poyntsource.com/New/Google/20090115_18999_Sites.txt

Good luck with your observation!

Oliver Klös

IOTA-ES

(4711) Kathy, 2009 Jan 15, Station Map

Mittwoch, Februar 11th, 2009

Station Map for the Occultation by (307) Nike at Wednesday, 2009 January 14 (~ 20.42 UT)

V-Magnitude of target star HIP 6630: 8.6 mag
Johnson B-V Colour Index: + 0.5
Spectral type F8
The UCAC2 gives a „pseudo-R magnitude“ of 8.7 mag

The max duration is expected to be 2.7 sec with a max drop of 6.5 mag.
The event will take place at an altitude of 36 deg and at azimuth 239 deg. The sun will be at an altitude of -42 deg. (At predicted centre line for longitude 0 deg)

There is a 1 sigma uncertainty interval of  ±  0.53 path widths.
The probabilities to see a positive event:

Centre line: ~ 66 %
Path limits: ~  47 %
1 sigma lines:  ~ 16 %
2 sigma lines: ~ 2 %

(Calculation according to Raymond Dusser, E.A.O.N. Circular #10)

PLEASE REMEMBER: Predictions are sometimes wrong. Please observe even with a small probability.
Let other observers know about you observing plans: Announce you station with OccultWatcher !

More information (coordinates, finder charts) at Steve Preston’s prediction:
http://asteroidoccultation.com/2009_01/0114_307_18589.htm

Table of potential observing stations and cities with distance from center of predicted path (Derek C. Breit):
http://www.poyntsource.com/New/Google/20090114_18589_Sites.txt

Map and Coordinates at the web page of  E.A.O.N. (not updated with Steve Preston’s data) :
http://astrosurf.com/eaon/Occultations%20January.htm

Good luck with your observation!

Oliver Klös

IOTA-ES

(307) Nike, 2009 Jan 14, Station Map

Dienstag, Februar 10th, 2009

Station Map for the Occultation by (145) Adeona at Tuesday, 2009 January 13 (~ 22:14 UT)

V-Magnitude of target star TYC 1815-00526-1: 12.3 mag
Johnson B-V Colour Index: + 0.2
The UCAC2 gives a „pseudo-R magnitude“ of 12.0 mag

Please notice:
The combined light of the asteroid and the star will drop by 0.6 mag to 11.9 mag (the magnitude of the asteroid) during an occultation.

The max duration is expected to be 35.0 sec with a max drop of 0.6 mag.
The event will take place at an altitude of 43 deg and at azimuth 256 deg. The sun will be at an altitude of -61 deg. (At predicted centre line for latitude N 50 deg)

There is a 1 sigma uncertainty interval of  ±  0.23 path widths.
The probabilities to see a positive event:

Centre line: ~  97 %
Path limits: ~  50 %
1 sigma lines:  ~ 16 %
2 sigma lines: ~ 2 %

(Calculation according to Raymond Dusser, E.A.O.N. Circular #10)

PLEASE REMEMBER: Predictions are sometimes wrong. Please observe even with a small probability.
Let other observers know about you observing plans: Announce you station with OccultWatcher !

More information (coordinates, finder charts) at Steve Preston’s prediction:
http://asteroidoccultation.com/2009_01/0113_145_17165.htm

Table of potential observing stations and cities with distance from center of predicted path (Derek C. Breit):
http://www.poyntsource.com/New/Google/20090113_17165_Sites.txt

Map and Coordinates at the web page of  E.A.O.N. (not updated with Steve Preston’s data):
http://astrosurf.com/eaon/Occultations%20January.htm

Good luck with your observation!

Oliver Klös

IOTA-ES

(145) Adeona, 2009 Jan 13, Station  Map

Dienstag, Februar 10th, 2009

Station Map for the Occultation by (2880) Nihondaira at Monday, 2009 January 12 (~ 03:20 UT)

V-Magnitude of target star HIP 43670: 8.5 mag
Johnson B-V Colour Index: + 0.7
Spectral type K0
The UCAC2 gives a „pseudo-R magnitude“ of 8.6 mag

The max duration is expected to be 1.5 sec with a max drop of 7.7 mag.
The event will take place at an altitude of 49 deg and at azimuth 252 deg. The sun will be at an altitude of -32 deg. (At predicted centre line for longitude E 15 deg)

There is a 1 sigma uncertainty interval of  ±  4.23 path widths.
The probabilities to see a positive event:

Centre line: ~  9 %
Path limits: ~  9 %
1 sigma lines:  ~ 5 %
2 sigma lines: ~ 1 %

(Calculation according to Raymond Dusser, E.A.O.N. Circular #10)

PLEASE REMEMBER: Predictions are sometimes wrong. Please observe even with a small probability.
Let other observers know about you observing plans: Announce you station with OccultWatcher !

More information (coordinates, finder charts) at Steve Preston’s prediction:
http://asteroidoccultation.com/2009_01/0112_2880_20026.htm

Table of potential observing stations and cities with distance from center of predicted path (Derek C. Breit):
http://www.poyntsource.com/New/Google/20090112_20026_Sites.txt

Map and Coordinates at the web page of  E.A.O.N. :
http://astrosurf.com/eaon/Occultations%20January.htm

Good luck with your observation!

Oliver Klös

IOTA-ES

(2880) Nihondaira, 2009 Jan 12, Station Map

Dienstag, Februar 10th, 2009

Station Maps for the Occultation by (704) Interamnia at Sunday, 2009 January 11 (~ 03:34 UT)

NORTH and SOUTH

Magnitude of target star 2UCAC 27665145: 12.9 mag

Please notice:
In the case of an occultation, the combined light of the asteroid and the star will drop by 0.3 mag to 11.8 mag (the magnitude of the asteroid).

The max duration is expected to be 37.9 sec with a max drop of 0.34 mag.
The event will take place at an altitude of 28 deg and at azimuth 182 deg. The sun will be at an altitude of -40 deg. (At predicted centre line for latitude N 50 deg)

There is a 1 sigma uncertainty interval of  ±  0.18 path widths.
The probabilities to see a positive event:

Centre line: ~  100 %
Path limits: ~  50 %
1 sigma lines:  ~ 16 %
2 sigma lines: ~ 2 %

(Calculation according to Raymond Dusser, E.A.O.N. Circular #10)

PLEASE REMEMBER: Predictions are sometimes wrong. Please observe even with a small probability.
Let other observers know about you observing plans: Announce you station with OccultWatcher !

More information (coordinates, finder charts) at Steve Preston’s prediction:
http://asteroidoccultation.com/2009_01/0111_704_19797.htm

Table of potential observing stations and cities with distance from center of predicted path (Derek C. Breit):
http://www.poyntsource.com/New/Google/20090111_19797_Sites.txt

Good luck with your observation!

Oliver Klös

IOTA-ES

(704) Interamnia, 2009 Jan 11, Station Map NORTH(704) Interamnia, 2009 Jan 11, Station Map SOUTH

Sonntag, Februar 8th, 2009

Station Map for the Occultation by (626) Notburga at Saturday, 2009 January 10 (~ 18:09 UT)

V-Magnitude of target star HIP 109369: 7.0 mag
Johnson B-V Colour Index: + 1.0
Spectral type G5

The max duration is expected to be 2.4 sec with a max drop of 6.6 mag.
The event will take place at an altitude of 16 deg and at azimuth 229 deg. The sun will be at an altitude of -16 deg. (At predicted centre line for longitude W 03 deg)

There is a 1 sigma uncertainty interval of  ±  0.17 path widths.
The probabilities to see a positive event:

Centre line: ~  100 %
Path limits: ~  50 %
1 sigma lines:  ~ 16 %
2 sigma lines: ~ 2 %

(Calculation according to Raymond Dusser, E.A.O.N. Circular #10)

PLEASE REMEMBER: Predictions are sometimes wrong. Please observe even with a small probability.
Let other observers know about you observing plans: Announce you station with OccultWatcher !

More information (coordinates, finder charts) at Steve Preston’s prediction:
http://asteroidoccultation.com/2009_01/0110_626_20025.htm

Table of potential observing stations and cities with distance from center of predicted path (Derek C. Breit):
http://www.poyntsource.com/New/Google/20090110_20025_Sites.txt

Map and Coordinates at the web page of  E.A.O.N. :
http://astrosurf.com/eaon/Occultations%20January.htm

Good luck with your observation!

Oliver Klös

IOTA-ES

(626) Notburga, 2009 Jan 10, Station Map

Samstag, Februar 7th, 2009

Station Map for the Occultation by (1095) Tulipa at Thursday, 2009 January 08 (~ 18:31 UT)

V-Magnitude of target star TYC 0762-02759-1: 9.7 mag
Johnson B-V Colour Index: + 1.4
The UCAC2 gives a „pseudo-R magnitude“ of 9.4 mag

The max duration is expected to be 2.4 sec with a max drop of 5.0 mag.
The event will take place at an altitude of 15 deg and at azimuth 92 deg. The sun will be at an altitude of -22 deg. (At predicted centre line for longitude E 05 deg)

There is a 1 sigma uncertainty interval of  ±  1.30 path widths.
The probabilities to see a positive event:

Centre line: ~  30 %
Path limits: ~  28 %
1 sigma lines:  ~ 12 %
2 sigma lines: ~ 1 %

(Calculation according to Raymond Dusser, E.A.O.N. Circular #10)

PLEASE REMEMBER: Predictions are sometimes wrong. Please observe even with a small probability.
Let other observers know about you observing plans: Announce you station with OccultWatcher !

More information (coordinates, finder charts) at Steve Preston’s prediction:
http://asteroidoccultation.com/2009_01/0108_1095_18733.htm

Table of potential observing stations and cities with distance from center of predicted path (Derek C. Breit):
http://www.poyntsource.com/New/Google/20090108_18733_Sites.txt

Good luck with your observation!

Oliver Klös

IOTA-ES

(1095) Tulipa, 2009 Jan 08, Station Map