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2020 European Asteroidal Occultation Results

Sources : Planoccult mailing list, EAON, IOTA, IOTA-ES
Page maintained by Eric Frappa -
Updated : 2020/01/16


January 16 : Arachne,
14 : Eleonora, Rhesus,
13 : Hippodamia, Wladilena,
12 : Athamantis,
07 : Hesperia,
06 : 2001 QC134, Hebe,
04 : Burnhamia,
02 : Ohre, Urumqi, Oulu, Vala,
01 : Klotilde, Ruth

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.




2020/01/16 | 407 | Arachne | TYC 1372-01714-1
asteroid measurement: at least 105 km

P+ | prediction           | 03:14:52 | 03:14:52 |       |     |    | E  10 00 00   | N 44 10 30   |    0 | WS |;
O+ | Pietro Baruffetti    | 03:13:50 | 03:16:26 | M300  | VID | IT | E  10 07 56.7 | N 44 01 17.0 |   30 | WS |
 8.46 | 03:14:50.21 | 0.04 | 03:14:58.67 | 0.04 | GPS++ |      |      |   |;


2020/01/14 | 354 | Eleonora | 4UC464-049900
asteroid measurement: at least 16 km

P+ | prediction           | 04:24:10 | 04:24:10 |       |     |    | E  14 00 00   | N 50 41 21   |    0 | WS |;
O+ | Jiri Kubanek         | 04:22:06 | 04:26:08 | M203  | VID | CZ | E  13 44 56.3 | N 49 44 35.7 |  538 | WS |
 0.80 | 04:24:06.74 | 0.22 | 04:24:07.54 | 0.22 | GPS++ |      |      |   |;


2020/01/14 | 9142 | Rhesus | 4UC450-054889
Jupiter trojan
asteroid measurement: at least 34 km

P+ | prediction           | 03:29:31 | 03:29:31 |       |     |    | E  02 00 00   | N 41 47 23   |    0 | WS |;
O+ | C. Perello/A. Selva  | 03:19:23 | 03:39:21 | M500  | VID | ES | E  02 05 24.6 | N 41 33 00.2 |  224 | WS |
 2.28 | 03:29:30.31 | 0.08 | 03:29:32.59 | 0.04 | GPS++ |      |      |   |;
O- | Alfonso Noschese     | 03:20:37 | 03:40:37 | M300  | CCD | IT | E  14 54 18.0 | N 40 39 27.8 |  115 | WS |;


2020/01/13 | 692 | Hippodamia | 4UC677-039202
asteroid measurement: at least 47 km

P+ | prediction           | 23:51:23 | 23:51:23 |       |     |    | E  02 00 00   | N 41 12 47   |    0 | WS |;
O+ | Antoni Selva         | 23:49:27 | 23:53:26 | M500  | VID | ES | E  02 05 24.6 | N 41 33 00.2 |  224 | WS |
 4.20 | 23:51:28.67 | 0.08 | 23:51:32.87 | 0.04 | GPS++ |      |      |   |;


2020/01/13 | 852 | Wladilena | 4UC726-038147
asteroid measurement: at least 27 km

P+ | prediction           | 21:25:55 | 21:25:55 |       |     |    | E  10 00 00   | N 44 03 12   |    0 | WS |;
O+ | Pietro Baruffetti    | 21:24:25 | 21:27:16 | M300  | VID | IT | E  10 07 56.7 | N 44 01 17.0 |   30 | WS |
 2.07 | 21:25:57.57 | 0.32 | 21:25:59.64 | 0.32 | GPS++ |      |      |   |
0.64s integration. Cloud interruptions 21:26:42.3/46.6, 21:27:03.2/12.2.|;


2020/01/12 | 230 | Athamantis | TYC 0208-00596-1
asteroid measurement: at least 12 km

P+ | prediction           | 03:59:32 | 03:59:32 |       |     |    | E  02 00 00   | N 41 25 36   |    0 | WS |;
O+ | Jordi Marco          | 03:59:21 | 03:59:56 | M235  | CCD | ES | E  02 09 40.3 | N 41 23 57.9 |   77 | WS |
 1.04 | 03:59:37.06 | 0.12 | 03:59:38.10 | 0.09 | NTP   |      |      |   |;


2020/01/07 | 69 | Hesperia | 4UC497-025768
asteroid measurement: at least 135 km

P+ | prediction           | 02:10:52 | 02:10:52 |       |     |    | E  11 00 00   | N 46 46 53   |    0 | WS |;
O+ | Andreas Schweizer    | 02:10:42 | 02:13:12 | L107  | CCD | CH | E  08 28 22.8 | N 47 20 30.8 |  580 | WS |
12.75 | 02:11:12.80 | 1.25 | 02:11:25.55 | 1.50 | GPS   |      |      |   |
1s exposure. Pending check.|;
O+ | Stefan Meister       | 02:10:31 | 02:12:03 | M500  | CCD | CH | E  08 34 14.3 | N 47 31 10.4 |  550 | WS |
13.82 | 02:11:09.99 | 0.21 | 02:11:23.81 | 0.24 | GPS   |      |      |   |;
O+ | G. Casalnuovo et al  | 02:10:25 | 02:11:25 | M355  | CCD | IT | E  11 20 17   | N 46 25 22   |  300 | WS |
13.21 | 02:10:48.85 | 0.13 | 02:11:02.06 | 0.13 | NTP   |      |      |   |
Observation with B. Chinaglia.|;


2020/01/06 | 77812 | 2001 QC134 | 4UC627-013387
asteroid measurement: at least 10 km

P+ | prediction           | 16:59:47 | 16:59:47 |       |     |    | E  13 19 35   | N 58 25 02   |    0 | WS |;
O+ | Michal Rottenborn    | 16:59:17 | 17:03:17 | M303  | VID | CZ | E  13 19 55.8 | N 49 42 26.4 |  326 | WS |
 1.04 | 17:01:28.28 | 0.08 | 17:01:29.32 | 0.08 | GPS++ |      |      |   |;


2020/01/06 | 6 | Hebe | TYC 0300-00301-1
chords + DAMIT model
asteroid measurement: 219.7 km +/- 4.4 x 183.8 km +/- 4.7, PA 136.7 deg +/- 7.6

P+ | prediction           | 01:33:16 | 01:33:16 |       |     |    | E  02 00 00   | N 44 38 09   |    0 | WS |;
O- | Gerard Vaudescal     | 01:32:09 | 01:34:07 | M305  | VID | FR | E  00 03 31.8 | N 43 08 40.4 |  488 | WS |;
O+ | Eric Frappa          | 01:32:02 | 01:34:10 | L61   | VID | FR | E  01 59 08.0 | N 44 33 55.5 |  327 | WS |
10.55 | 01:33:11.53 | 0.40 | 01:33:22.08 | 0.16 | GPS++ |      |      |   |;
O- | Matthieu Conjat      | 01:31:53 | 01:34:44 | M400  | CCD | FR | E  07 17 59.4 | N 43 43 32.9 |  350 | WS |;
O+ | Alberto Ossola       | 01:30:55 | 01:36:05 | M230  | VID | CH | E  08 55 10.5 | N 45 59 50.6 |  350 | WS |
 8.75 | 01:33:30.74 | 0.04 | 01:33:39.49 | 0.09 | GPS++ |      |      |   |;
O+ | Andrea Manna         | 01:24:55 | 01:37:13 | M200  | VID | CH | E  08 55 13.8 | N 46 10 35.5 |  240 | WS |
 7.74 | 01:33:31.71 | 0.02 | 01:33:39.45 | 0.02 | GPS++ |      |      |   |;
O+ | Stefano Sposetti     | 01:26:50 | 01:36:58 | M280  | VID | CH | E  09 01 26.5 | N 46 13 53.2 |  260 | WS |
 7.44 | 01:33:32.22 | 0.01 | 01:33:39.66 | 0.01 | GPS++ |      |      |   |;
O+ | Pietro Baruffetti    | 01:29:30 | 01:35:30 | M300  | VID | IT | E  10 07 56.7 | N 44 01 17.0 |   30 | WS |
 3.72 | 01:33:24.77 | 0.02 | 01:33:28.49 | 0.02 | GPS++ |      |      |   |;
O+ | Michele Bigi         | 01:29:30 | 01:35:30 | M200  | VID | IT | E  10 08 19.0 | N 44 01 33.9 |   88 | WS |
 3.60 | 01:33:24.90 | 0.04 | 01:33:28.50 | 0.04 | GPS++ |      |      |   |;
O- | Mauro Bachini        | 01:33:14 | 01:33:44 | M250  | CCD | IT | E  10 41 17.6 | N 43 41 21.1 |   15 | WS |;
O+ | David Vizzoni        | 01:30:01 | 01:37:00 | M200  | CCD | IT | E  11 36 26.2 | N 44 54 13.1 |    7 | WS |
10.29 | 01:33:30.00 | 0.08 | 01:33:40.29 | 0.08 | GPS   |      |      |   |;
O- | Alfonso Noschese     | 01:29:27 | 01:37:26 | M300  | CCD | IT | E  14 54 18.0 | N 40 39 27.8 |  115 | WS |;


2020/01/04 | 834 | Burnhamia | 4UC541-023357
asteroid measurement: at least 63 km

P+ | prediction           | 23:49:56 | 23:49:56 |       |     |    | E  02 00 00   | N 41 51 22   |    0 | WS |;
O+ | Carles Schnabel      | 23:47:56 | 23:51:59 | M400  | VID | ES | E  01 52 21.1 | N 41 29 37.5 |  180 | WS |
 3.84 | 23:49:56.86 | 0.48 | 23:50:00.70 | 0.48 | GPS++ |      |      |   |;
O+ | C. Perello/A. Selva  | 23:47:58 | 23:51:56 | M500  | VID | ES | E  02 05 24.6 | N 41 33 00.2 |  224 | WS |
 3.20 | 23:49:56.04 | 0.08 | 23:49:59.24 | 0.08 | GPS++ |      |      |   |;


2020/01/02 | 4801 | Ohre | 4UC486-001729

P+ | prediction           | 20:26:51 | 20:26:51 |       |     |    | E  18 00 00   | N 47 48 57   |    0 | WS |;
O+ | Jozef Csipes         | 20:21:06 | 20:30:07 | M400  | CCD | SK | E  18 11 23.8 | N 47 52 24.4 |  120 | WS |
 0.95 | 20:26:50.61 | 0.5  | 20:26:51.56 | 0.5  | NTP   |      |      |   |;


2020/01/02 | 2729 | Urumqi | 4UC579-018450
asteroid measurement: at least 12 km

P+ | prediction           | 19:47:56 | 19:47:56 |       |     |    | E  14 00 00   | N 51 20 32   |    0 | WS |;
O- | Christian Weber      | 19:45:26 | 19:51:43 | M203  | VID | DE | E  13 25 40.0 | N 52 30 58.0 |   40 | WS |;
O- | Sven Andersson       | 19:47:03 | 19:48:10 | M356  | VID | DE | E  13 39 41.5 | N 52 24 35.4 |   40 | WS |;
O- | Peter Enskonatus     | 19:47:00 | 19:49:00 | M200  | VID | DE | E  13 43 04   | N 52 25 42   |   38 | WS |;
O+ | Peter Lindner        | 19:45:30 | 19:49:19 | M305  | VID | DE | E  14 16 45.1 | N 51 26 57.3 |  118 | WS |
 0.92 | 19:48:00.77 | 0.04 | 19:48:01.69 | 0.02 | GPS++ |      |      |   |;


2020/01/02 | 1512 | Oulu | 4UC388-146671

P+ | prediction           | 18:20:07 | 18:20:07 |       |     |    | E  06 00 00   | N 43 38 46   |    0 | WS |;
O+ | Michel Deconinck     | 18:13:05 | 18:21:00 | M250  | VIS | FR | E  06 05 25.0 | N 43 42 14.7 |  500 | WS |
 1.34 | 18:20:06.25 | 0.30 | 18:20:07.59 | 0.20 | NTP   |      |      | A |;
O- | Pietro Baruffetti    | 18:19:03 | 18:21:39 | M300  | VID | IT | E  10 07 56.7 | N 44 01 17.0 |   30 | WS |;


2020/01/02 | 131 | Vala | 4UC579-041371
asteroid measurement: at least 29 km

P+ | prediction           | 02:24:51 | 02:24:51 |       |     |    | E  06 00 00   | N 44 28 30   |    0 | WS |;
O+ | Michel Bonnardeau    | 02:24:25 | 02:24:26 | M203  | CCD | FR | E  05 40 40.3 | N 44 45 50.0 |  836 | WS |
 2.79 | 02:24:56.66 | 0.15 | 02:24:59.45 | 0.15 | GPS   |      |      |   |;


2020/01/01 | 583 | Klotilde | 4UC558-010609
asteroid measurement: at least 62 km

P+ | prediction           | 23:49:04 | 23:49:04 |       |     |    | W  08 00 00   | N 36 30 48   |    0 | WS |;
O+ | Wolfgang Beisker     | 23:43:00 | 23:52:00 | M270  | CCD | PT | W  07 36 52.3 | N 37 12 30.7 |  148 | WS |
 6.21 | 23:48:50.27 | 0.10 | 23:48:56.48 | 0.10 | NTP   |      |      |   |;


2020/01/01 | 798 | Ruth | 4UC508-024222
asteroid measurement: at least 40 km

P+ | prediction           | 19:50:58 | 19:50:58 |       |     |    | E  15 00 00   | N 40 26 22   |    0 | WS |;
O+ | Alfonso Noschese     | 19:48:01 | 19:56:01 | M300  | CCD | IT | E  14 54 18.0 | N 40 39 27.8 |  115 | WS |
 2.88 | 19:50:57.33 | 0.13 | 19:51:00.21 | 0.25 | GPS++ |      |      |   |;