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2021 European Asteroidal Occultation Results

Sources : Planoccult mailing list, EAON, IOTA, IOTA-ES
Page maintained by Eric Frappa -
Updated : 2021/01/15


January 12 : Zambesia, Anchises, Filipenko,
10 : Titania, Salonta,
09 : Siegena, Fechtig,
08 : Europa,
06 : Miriam,
05 : Egeria

All the times are in UT. Observations are presented in reverse chronology.
All geographical coordinates should be expressed in WGS84 datum.

From 2019, only events with at least one positive observation are published on these pages.

For one observation, the first line is always :
O+ : positive, O- : negative, O? : uncertain | name of the observer | Start observation | End observation | optics and aperture in mm | method | country | longitude | latitude | altitude in m | long lat datum (W : WGS84) alt datum (W : WGS84, S : Mean Sea Level) |

If the occultation is positive, or sometimes uncertain (O?), the second line is :
duration in sec. | time of Disappearance | accuracy in sec. | time of Reappearance | accuracy in sec. | time source | reaction time for D in sec. (if visual) | reaction time for R in sec. (if visual) | A : reaction time applied, N : no reaction time applied (if visual) |

If multiple events are observed, they are processed as separate observations, but with a numerotation added in the first field (O+1, O+2...).

If necessary, other lines in italic are added for comments.

The characters |; specify the end of one observation description.

A single line flagged P+ gives mid-time, longitude and latitude for a point along the predicted path.


Abbreviations used are :


B : Binoculars                      CCD : CCD or CMOS imaging
E : naked Eye                       PHG : photographic recording
L : Lens optics (refractor)         PHM : photometer
M : Mirror optics (reflector)       VID : video recording
                                    VIS : visual
                                    WEB : webcam recording

GPS   : GPS receiver (no more info or only NMEA), unreliable method
GPS+  : GPS NMEA with display correction applied
GPS++ : GPS one Pulse Per Second
PHONE : Phone time signal (wired phone)
RAD   : Radio time signal (no more info or intermittent radio control. clock)
RAD+  : Intermittent radio controlled clock updated just before event
RAD++ : Permanent radio time signal
LAC   : Local atomic clock
NTP   : Network Time Protocol (no more info or Windows sys), unreliable method
NTP+  : Permanent NTP synchro under Linux/Unix sys
NTP++ : Permanent NTP synchro with local atomic clock (observatories)
TTV   : TV teletext display, unreliable method
Note: for the best accuracy, only GPS++, PHONE, RAD++, NTP++ or LAC should be
used.



2021/01/12 | 1242 | Zambesia | 4UC638-039963
asteroid measurement: at least 44 km

P+ | prediction           | 04:46:58 | 04:46:58 |       |     |    | E  00 00 00   | N 43 12 42   |    0 | WS |;
O+ | J.J. Castellani      | 04:46:56 | 04:47:12 | M400  | VID | FR | W  00 02 40.7 | N 43 37 15.3 |  180 | WS |
 4.16 | 04:47:00.28 | 0.16 | 04:47:04.44 | 0.32 | GPS++ |      |      |   |;
O- | Antoni Selva         | 04:44:45 | 04:48:43 | M500  | VID | ES | E  02 05 24.6 | N 41 33 00.2 |  224 | WS |;


2021/01/12 | 1173 | Anchises | 4UC338-073033
Jupiter trojan
Lucky Star prediction
asteroid measurement: at least 61 km

P+ | prediction           | 03:08:16 | 03:08:16 |       |     |    | E  19 13 13   | N 48 35 57   |    0 | WS |;
O- | Peter Delincak       | 03:07:00 | 03:09:00 | M400  | CCD | SK | E  18 42 09.5 | N 49 24 15.2 |  680 | WS |;
O+ | Marek Harman         | 03:07:52 | 03:08:42 | M356  | CCD | SK | E  19 09 13.7 | N 48 43 04.4 |  575 | WS |
 2.44 | 03:08:17.97 | 0.35 | 03:08:20.41 | 0.35 | NTP   |      |      |   |;


2021/01/12 | 2892 | Filipenko | 4UC423-139295
asteroid measurement: at least 32 km

P+ | prediction           | 01:01:06 | 01:01:06 |       |     |    | W  71 50 00   | S 29 00 00   |    0 | WS |;
O+ | E. Frappa/A. Klotz   | 01:00:19 | 01:03:34 | M250  | CCD | CL | W  70 43 57.3 | S 29 15 36.3 | 2362 | WS |
 0.82 | 01:01:08.32 | 0.21 | 01:01:09.14 | 0.10 | GPS++ |      |      |   |
Technical interruption 01:01:49.3/02:04.2. Remote observation using TAROT South robotic telescope.|;


2021/01/10 | 593 | Titania | TYC 2983-00734-1
chords + DAMIT model
asteroid measurement: 83.5 km +/- 3.1 x 74.6 km +/- 1.1, PA 90.1 deg +/- 11.4

P+ | prediction           | 22:44:13 | 22:44:13 |       |     |    | E  13 00 00   | N 49 25 30   |    0 | WS |;
O+ | Eberhard Bredner     | 22:40:00 | 22:50:00 | M254  | VID | DE | E  10 02 38.0 | N 50 40 05.0 |  611 | WS |
 4.00 | 22:44:37.77 | 0.08 | 22:44:41.77 | 0.08 | GPS++ |      |      |   |;
O+ | Jiri Kubanek         | 22:42:16 | 22:46:21 | M203  | CCD | CZ | E  12 31 48.8 | N 49 44 51.7 |  671 | WS |
 6.21 | 22:44:18.30 | 0.05 | 22:44:24.51 | 0.05 | GPS++ |      |      |   |;
O+ | Jiri Polak           | 22:43:52 | 22:46:15 | M303  | CCD | CZ | E  13 19 15.6 | N 49 41 41.1 |  339 | WS |
 7.60 | 22:44:13.28 | 0.40 | 22:44:20.88 | 0.40 | GPS++ |      |      |   |;


2021/01/10 | 1436 | Salonta | 4UC503-044608
asteroid measurement: at least 49 km

P+ | prediction           | 20:26:12 | 20:26:12 |       |     |    | E  00 00 00   | N 47 52 13   |    0 | WS |;
O+ | Gerald Rousseau      | 20:25:03 | 20:26:58 | M200  | VID | FR | E  00 12 23.4 | N 47 07 50.4 |   65 | WS |
 3.20 | 20:26:14.62 | 0.06 | 20:26:17.82 | 0.16 | GPS++ |      |      |   |;
O+ | Karl-Ludwig Bath     | 20:21:01 | 20:29:01 | M180  | CCD | DE | E  07 51 28.1 | N 48 06 14.3 |  210 | WS |
 0.62 | 20:25:49.37 | 0.13 | 20:25:49.99 | 0.12 | NTP   |      |      |   |;
O- | Peter Lindner        | 20:22:32 | 20:27:33 | M305  | CCD | DE | E  14 16 45.1 | N 51 26 57.3 |  118 | WS |;


2021/01/09 | 386 | Siegena | 4UC408-004329
asteroid measurement: at least 131 km

P+ | prediction           | 20:45:25 | 20:45:25 |       |     |    | E  00 00 00   | N 52 39 39   |    0 | WS |;
O+ | Malcolm Jennings     | 20:40:00 | 20:50:00 | M276  | VID | UK | W  00 04 01.4 | N 51 19 09.4 |  170 | WS |
 9.34 | 20:45:07.84 | 0.16 | 20:45:17.18 | 0.32 | RAD++ |      |      |   |;
O+ | Philip Denyer        | 20:43:37 | 20:47:05 | M235  | VID | UK | E  00 11 38.8 | N 51 33 06.3 |   13 | WS |
14.06 | 20:45:06.36 | 0.16 | 20:45:20.42 | 0.06 | GPS++ |      |      |   |;


2021/01/09 | 2533 | Fechtig | 4UC548-040180
asteroid measurement: at least 23 km

P+ | prediction           | 19:51:42 | 19:51:42 |       |     |    | E  03 00 00   | N 48 53 22   |    0 | WS |;
O+ | Arnaud Leroy         | 19:51:03 | 19:53:00 | M300  | CCD | FR | E  02 42 23.8 | N 48 53 54.5 |  112 | WS |
 2.10 | 19:51:39.12 | 0.30 | 19:51:41.22 | 0.30 | GPS++ |      |      |   |;


2021/01/08 | 52 | Europa | 4UC539-025397
asteroid measurement: at least 168 km

P+ | prediction           | 21:46:51 | 21:46:51 |       |     |    | E  03 00 00   | N 49 17 57   |    0 | WS |;
O+ | Arnaud Leroy         | 21:45:00 | 21:48:00 | M300  | CCD | FR | E  02 42 23.8 | N 48 53 54.5 |  112 | WS |
14.72 | 21:46:57.17 | 0.40 | 21:47:11.89 | 0.20 | GPS++ |      |      |   |;


2021/01/06 | 102 | Miriam | 4UC486-001992
asteroid measurement: at least 32 km

P+ | prediction           | 20:34:22 | 20:34:22 |       |     |    | W  03 00 00   | N 52 14 36   |    0 | WS |;
O+ | William Stewart      | 20:33:47 | 20:35:20 | M279  | VID | UK | W  02 34 07.5 | N 53 03 27.0 |   68 | WS |
 1.84 | 20:34:18.57 | 0.08 | 20:34:20.41 | 0.08 | GPS++ |      |      |   |;
O- | Tim Haymes           | 20:33:00 | 20:36:00 | M279  | CCD | UK | W  01 18 46.3 | N 51 55 41.2 |  119 | WS |;


2021/01/05 | 13 | Egeria | HIP 25974
Known double star

P+ | prediction           | 20:38:41 | 20:38:41 |       |     |    | E  02 00 00   | N 40 42 49   |    0 | WS |;
O+ | Jorge Juan           | ES | Waiting for full report.|;
O- | Wolfgang Beisker     | 20:39:00 | 20:42:00 | M270  | CCD | PT | W  07 36 52.3 | N 37 12 30.7 |  148 | WS |;
O+2| Carles Schnabel      | 20:33:46 | 20:42:57 | M280  | VID | ES | E  01 50 18.0 | N 41 18 23.8 |  297 | WS |
23.98 | 20:38:35.89 | 0.08 | 20:38:59.87 | 0.02 | GPS++ |      |      |   |;
O+1| Carles Schnabel      | 20:33:46 | 20:42:57 | M280  | VID | ES | E  01 50 18.0 | N 41 18 23.8 |  297 | WS |
24.00 | 20:38:36.51 | 0.02 | 20:39:00.51 | 0.02 | GPS++ |      |      |   |;
O+2| C. Perello/A. Selva  | 20:36:47 | 20:40:45 | M500  | VID | ES | E  02 05 24.6 | N 41 33 00.2 |  224 | WS |
22.69 | 20:38:33.78 | 0.05 | 20:38:56.47 | 0.04 | GPS++ |      |      |   |;
O+1| C. Perello/A. Selva  | 20:36:47 | 20:40:45 | M500  | VID | ES | E  02 05 24.6 | N 41 33 00.2 |  224 | WS |
23.48 | 20:38:33.95 | 0.02 | 20:38:57.43 | 0.02 | GPS++ |      |      |   |;
O+1| Joan Rovira          | 20:35:40 | 20:42:20 | M180  | VID | ES | E  02 05 45.1 | N 41 49 05.4 |  827 | WS |
18.00 | 20:38:37.66 | 0.02 | 20:38:55.66 | 0.02 | GPS++ |      |      |   |;
O+2| Joan Rovira          | 20:35:40 | 20:42:20 | M180  | VID | ES | E  02 05 45.1 | N 41 49 05.4 |  827 | WS |
15.26 | 20:38:39.56 | 0.04 | 20:38:54.82 | 0.02 | GPS++ |      |      |   |;
O+2| Jordi Marco          | 20:37:56 | 20:39:46 | M235  | CCD | ES | E  02 09 40.2 | N 41 23 57.8 |   77 | WS |
23.54 | 20:38:32.86 | 0.02 | 20:38:56.40 | 0.02 | NTP   |      |      |   |;
O+1| Jordi Marco          | 20:37:56 | 20:39:46 | M235  | CCD | ES | E  02 09 40.2 | N 41 23 57.8 |   77 | WS |
23.68 | 20:38:33.24 | 0.02 | 20:38:56.92 | 0.02 | NTP   |      |      |   |;
O- | Hilari Pallares      | 20:31:15 | 20:40:25 | M280  | VIS | ES | E  04 14 28.1 | N 39 49 12.7 |   19 | WS |;