Archive for the ‘Uncategorized’ Category

Highlights of Asteroid Occultations in Europe

Montag, März 23rd, 2015

Oliver Klös, IOTA/ES        Last update: 2018 Feb 02

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“ if available!

Day       UT        Asteroid            MaxDur             Star                  Vmag
                                                        sec

February 2018

04    23:05   (194) Prokne    10.1    2UCAC 33750677     11.6

Last update: 2018 Jan 17
http://asteroidoccultation.com/2018_02/0204_194_54102.htm
05    23:26   (487) Venetia    12.4   2UCAC 39667470    12.4

Last update: 2018 Jan 17
http://asteroidoccultation.com/2018_02/0205_487_54110.htm
07    22:17      (1064) Arethusa       1.5        HIP 44780       8.0

Last update: 2018 Jan 17
http://asteroidoccultation.com/2018_02/0207_1064_57692.htm
07    23:28   (32) Pomona    11.4    2UCAC 36804048    11.6

Last update: 2018 Jan 17
http://asteroidoccultation.com/2018_02/0207_32_54130.htm
13    22:38   (521) Brixia    8.6    TYC 1977-011111-1    12.3

Last update: 2018 Jan 17
http://asteroidoccultation.com/2018_02/0213_521_54172.htm
13    16:42   (53) Kalypso    3.2    2UCAC 33162205    11.6

Last update: 2018 Jan 17
http://asteroidoccultation.com/2018_02/0215_53_58342.htm
15    20:14      (189) Phthia       3.8          HIP 42917       5.6

Last update: 2018 Jan 17
http://asteroidoccultation.com/2018_02/0215_189_57664.htm
17    04:28   (924) Toni    15.1     TYC 4983-00858-1     11.6

Last update: 2018 Jan 17
http://asteroidoccultation.com/2018_02/0217_924_54196.htm
21    01:40   (8) Flora    38.1        2UCAC 40493048      12.0

Last update: 2018 Feb 01
http://asteroidoccultation.com/2018_02/0221_8_54228.htm
21    04:32   (26) Proserpina    2.7       2UCAC 21835738      12.1

Last update: 2017 Dec 27
http://asteroidoccultation.com/2018_02/0221_26_54236.htm
22    00:42     (1032) Pafuri       9.2          HIP 73007       7.6

Last update: 2018 Jan 17
http://asteroidoccultation.com/2018_02/0222_1032_54248.htm
22    23:24  (788) Hohensteina    11.7      2UCAC 33915557      12.4

Last update: 2018 Jan 17
http://asteroidoccultation.com/2018_02/0222_788_54258.htm
23     19:35     (129) Antigone    12. 0    HIP 22583          9.8

Last update: 2018 Feb 01
http://asteroidoccultation.com/2018_02/0223_129_54272.htm
23   18:08     (211) Isolda      7.5         HIP 19146       8.5

Last update: 2018 Feb 01
http://asteroidoccultation.com/2018_02/0223_211_54268.htm
27     21:10     (466) Tisiphone    11.8    2UCAC 41158475        11.8

Last update: 2018 Feb 01
http://asteroidoccultation.com/2018_02/0227_466_54296.htm
28   18:14     (451) Patientia      18.2        HIP  22949       6.2

Last update: 2018 Feb 01
http://asteroidoccultation.com/2018_02/0228_451_54304.htm

March 2018

05     22:14     (906) Repsolda    5.5     2UCAC 43757077        12.3

Last update: 2018 Feb 01
http://asteroidoccultation.com/2018_03/0305_906_54346.htm
06     00:56     (856) Backlunda    4.3    HIP 27465      10.6

Last update: 2018 Feb 01
http://asteroidoccultation.com/2018_03/0306_856_54348.htm
06     19:46     (613) Ginevra    7.3    TYC 1412-01419-1        11.4

Last update: 2018 Jan 17
http://asteroidoccultation.com/2018_03/0306_613_54356.htm
11    22:39     (388) Charybdis   7.0    2UCAC 42019177        12.4

Last update: 2018 Feb 01
http://asteroidoccultation.com/2018_03/0311_388_54402.htm
14    18:00     (7) Iris      6.5     TYC 1259-00866-1       10.7

Last update: 2018 Jan 17
http://asteroidoccultation.com/2018_03/0314_7_54430.htm
15   02:35     (578) Happelia    2.9  TYC 6849-01334-1       10.7

Last update: 2018 Jan 15
http://asteroidoccultation.com/2018_03/0315_578_54438.htm
17   18:25     (535) Montague   3.2    2UCAC 39972220      11.3

Last update: 2018 Feb 01
http://asteroidoccultation.com/2018_03/0317_535_54470.htm
18  01:04     (34) Circe     19.3    TYC 5557-00392-1      11.3

Last update: 2018 Feb 01
http://asteroidoccultation.com/2018_03/0318_34_54476.htm
18  05:04    (97) Klotho    3.1     2UCAC 27562058      12.4

Last update: 2018 Jan 26
http://asteroidoccultation.com/2018_03/0318_97_54480.htm
18  19:03    (59) Elpis    8.0     2UCAC 37132134      12.1

Last update: 2018 Feb 01
http://asteroidoccultation.com/2018_03/0318_59_54484.htm
18  23:04    (388) Charybdis    6.0     2UCAC 42020239      12.3

Last update: 2018 Feb 01
http://asteroidoccultation.com/2018_03/0318_388_54488.htm
23    19:54   (72) Feronia    7.6     TYC 5535-00796-1      10.9

Last update: 2018 Feb 01
http://asteroidoccultation.com/2018_03/0323_72_54552.htm
30    21:10   (790) Pretoria    11.6     TYC 0735-03014-1      11.4

Last update: 2018 Feb 01
http://asteroidoccultation.com/2018_03/0330_790_54624.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

April 2018

06   04:29     (3641) Williams Bay     2.1        HIP  63615       8.4
Last update: 2018 Jan 07
http://asteroidoccultation.com/2018_04/0406_3641_57694.htm

June 2018

14   03:33     (785) Zwetana     7.2        HIP  107134      7.8
Last update: 2018 Jan 07
http://asteroidoccultation.com/2018_06/0614_785_55406.htm

August 2018

03   02:50     (3223) Forsius     1.4       HIP  8836      7.5
Last update: 2017 May 21
http://asteroidoccultation.com/2018_08/0803_3223_57712.htm

September 2018

08   00:40     (654) Zelinda     18.2        HIP  7594      8.3
Last update: 2017 May 24
http://asteroidoccultation.com/2018_09/0908_654_56366.htm

October 2018

08   03:09     (7394) Xanthomalitia     3.6        HIP  31277     5.6
Last update: 2017 May 21
http://asteroidoccultation.com/2018_10/1005_7394_57676.htm

November 2018

08   00:53     (790) Pretoria    7.0        HIP  48351      6.4
Last update: 2017 May 21
http://asteroidoccultation.com/2018_11/1108_790_57678.htm
10   02:09     (1756) Giacobini    1.9        HIP  7358      6.7
Last update: 2017 May 21
http://asteroidoccultation.com/2018_11/1110_1756_57736.htm
28   22:44   (1339) Desagneauxa    2.3    TYC 2403-00937-1    8.5
Last update: 2017 May 21
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: 2017 May 21
http://asteroidoccultation.com/2018_12/1206_3495_57940.htm
10   20:44   (479) Caprera   9.8     HIP 33753     7.7
Last update: 2017 May 24
http://asteroidoccultation.com/2018_12/1210_479_57398.htm
16   02:39   (1191) Alfaterna     3.8       HIP 32535       7.5
Last update: 2017 May 18
http://asteroidoccultation.com/2018_12/1216_1191_57452.htm
17   20:49   (2773) Brooks      1.5        TYC 1340-00835-1      8.9
Last update: 2017 May 21
http://asteroidoccultation.com/2018_12/1217_2773_57942.htm
21   18:33   (3995) Sakaino       1.2       HIP 22496       7.1
Last update: 2017 May 21
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