Open Access
Table D.1
Observation details for the occultations by (28978) Ixion.
| # Site (Country) Observer(s) | Latitude (dms) Longitude (dms) Elevation (m) | Transparency Wind Seeing | Telescope (cm) Camera Filter | Method ExpTime TimeSrc | Observation DeadTime |
|---|---|---|---|---|---|
| 2020-08-17 | |||||
| 1 Chester (USA) | 32° 22′ 15.0996″ N | Clear | T35.6 | VID | Positive |
| 83° 12′ 7.2″ W | <2 km/h | WAT-910HX | 0.3 s | (0 s) | |
| Roger Venable | 104.00 | Moderate | Luminance | ComNTP | |
| 2 Naperville (USA) | 41° 45′ 32.4″ N | Clear | T35.6 | IMG | Positive |
| 88° 7′ 0.0084″ W | <2 km/h | QHY174-GPS | 5 s | (0 s) | |
| Robert Dunford | 230.00 | Moderate | Luminance | CamGPS | |
| 3 Lake Placid (USA) | 44° 15′ 18.3996″ N | Clear | T30.5 | IMG | Positive |
| 74° 1′ 59.4192″ W | <2 km/h | QHY174-GPS | 3.00088 s | (0 s) | |
| George R. Viscome | 608.00 | Good | Luminance | CamGPS | |
| 2020-10-13 | |||||
| 1 Lowell Observatory (TiMo) (USA) | 35° 12′ 10.3644″ N | Clear | T31.8 | VID | Positive |
| 111° 40′ 1.4628″ W | <2 km/h | Point Grey BFLY | 0.050 s | (0 s) | |
| Michael Collins | 2198.00 | Good | Clear | ComGPS | |
| 2 Scottsdale (USA) | 33° 49′ 0.0984″ N | Clear | T30.0 | VID | Positive |
| 111° 52′ 7.2984″ W | <2 km/h | Watec 910HX | 0.033 s | (0 s) | |
| Tony George | 843.00 | Moderate | Clear | IOTA-VTI | |
| 3 Tempe (USA) | 33° 23′ 24.3348″ N | Clear | T28.0 | VID | Positive |
| 111° 57′ 20.574″ W | <2 km/h | RunCam Astro | 0.134 s | (0 s) | |
| Wayne Thomas | 358.00 | Good | Clear | IOTA-VTI | |
| 4 Glendale | 33° 41′ 39.0012″ N | Clear | T25.4 | VID | Positive |
| 112° 12′ 46.0008″ W | <2 km/h | RunCam Astro | 0.134 s | (0 s) | |
| David A. Kenyon | 400.00 | Good | Clear | IOTA-VTI | |
| 5 Tucson (USA) | 32° 18′ 28.314″ N | Clear | T23.5 | VID | Positive |
| 110° 57′ 46.62″ W | <2 km/h | RunCam Astro | 0.067 s | (0 s) | |
| Norman Carlson | 750.00 | Moderate | Clear | IOTA-VTI | |
| 6 Running Springs (USA) | 34° 13′ 7.8996″ N | Clear | T20.3 | VID | Positive |
| 117° 7′ 52.3992″ W | <2 km/h | Watec 910HX | 0.033 s | (0 s) | |
| Robert Jones | 1874.00 | Good | Clear | IOTA-VTI | |
| 7 Carefree (USA) | 33° 48′ 42.858″ N | Clear | T20.0 | VID | Positive |
| 111° 57′ 7.974″ W | <2 km/h | Watec 910HX | 0.033 s | (0 s) | |
| Paul D. Maley | 654.00 | Best | Clear | IOTA-VTI | |
| 8 Fountain Hills (USA) | 33° 37′ 21″ N | Clear | T20.0 | VID | Positive |
| 111° 43′ 35.0004″ W | <2 km/h | Watec 910HX | 0.033 s | (0 s) | |
| Ted Blank | 515.00 | Best | Clear | IOTA-VTI | |
| 9 Gardnerville (USA) | 38° 53′ 23.4996″ N | Clear | T30.5 | VID | Negative |
| 119° 40′ 20.3016″ W | <2 km/h | Watec 910HX | 0.334 s | (0 s) | |
| Jerry Bardecker | 1524.00 | Good | Clear | IOTA-VTI | |
| 10 Clear Lake Shores (USA) | 29° 32′ 55.5101″ N | Clear | T20.3 | VID | Negative |
| 95° 2′ 6.57996″ W | <2 km/h | Watec 910BD | 0.334 s | (0 s) | |
| Phil C. Stuart | 15.80 | Moderate | Clear | IOTA-VTI | |
| 2021-04-28 | |||||
| 1 Observatorio do Pico dos Dias (Brazil) | 22° 32′ 7.7532″ S | Clear | T157.4 | IMG | Positive |
| Itajuba | 45° 34′ 57.54″ W | <2 km/h | IXon | 0.15 s | (0 s) |
| G. Rossi, G. Margoti, V. Peixoto | 1810.71 | Good | Clear | CamGPS | |
| 2 CTIO One-Meter (Chile) | 30° 10′ 7.7916″ S | Clear | T100.0 | IMG | Positive |
| 70° 48′ 21.69″ W | <2 km/h | FLI PL23042 | 1.0 s | (0 s) | |
| J. Pollock, T. Linder | 2201.00 | Good | Clear | ComNTP | |
| 3 La Canelilla (Chile) | 30° 32′ 3″ S | Clear | T52.0 | IMG | Positive |
| 70° 47′ 45″ W | <2 km/h | ZWO1600 | 0.50112 s | (0 s) | |
| M. Meunier, B. Christophe, L. Bernasconi | 1548.00 | Good | Clear | ComNTP | |
| 4 CASLEO - Cerro Burek ASH (Argentina) | 31° 47′ 13.2″ S | Clear | T45.7 | IMG | Positive |
| 69° 18′ 23.868″ W | <2 km/h | SBIG STL11000 | 10.0 s | (2 s) | |
| N. Morales, J.L. Ortiz | 2591.00 | Good | Luminance | ComNTP | |
| 5 PROMPT-6 (Chile) | 30° 10′ 3.72″ S | Clear | T40.0 | IMG | Positive |
| 70° 48′ 18.8208″ W | <2 km/h | FLI PL23042 | 1.0 s | (0 s) | |
| J. Pollock, Vladimir Kouprianov | 2166.00 | Good | Clear | ComNTP | |
| 6 Reconquista (Argentina) | 29° 8′ 25.1826″ S | Clear | T30.5 | IMG | Positive |
| 59° 38′ 36.6086″ W | <2 km/h | QHY174M | 5.0 s | (0 s) | |
| Ariel Stechina | 50.00 | Good | Clear | ComNTP | |
| 7 TRAPPIST-South (Chile) | 29° 15′ 16.56″ S | Clear | T60.0 | IMG | Negative |
| 70° 44′ 21.84″ W | 20–28 km/h | FLI PL3041-BB | 2.5 s | (1.2 s) | |
| Emmanuel Jehin | 2315.00 | Good | Clear | ComNTP | |
| 8 A.A.A.A. (Argentina) | 34° 36′ 18.6984″ S | High humidity | T25.0 | IMG | Negative |
| C.Cebral, M. Konishi | 58° 26′ 4.6″ W | <2 km/h | SBIG ST9e | 5 s | (0 s) |
| C. Magliano, Y.O. Cuello | 39.40 | Good | No filter | Other | |
| 9 Observatorio El Catalejo, Santa Rosa (Argentina) | 36° 38′ 15.99″ S | Clear | T20.0 | IMG | Negative |
| 64° 19′ 27.48″ W | <2 km/h | QHY174M GPS | 2 s | (0 s) | |
| Julio Spagnotto | 182.00 | Good | Clear | CamGPS | |
| 10 Observatorio Los Cabezones (Argentina) | 36° 38′ 8.28996″ S | Clear | T20.0 | IMG | Negative |
| 64° 17′ 16.8299″ W | <2 km/h | QHY174M-GPS | 5 s | (0 s) | |
| A. Wilberger | 180.00 | Good | Clear | CamGPS | |
| 11 Cruz del Sur (Argentina) | 34° 40′ 10.56″ S | Clear | T20.0 | IMG | Negative |
| 58° 34′ 24.276″ W | <2 km/h | QHY174M-GPS | 6 s | (0 s) | |
| Andres Chapman | 39.00 | Bad | Clear | CamGPS | |
| 12 SONEAR-CEAMIG Observatory (Brazil) | 20° 42′ 54.27″ S | Overcast | T45.0 | IMG | Overcast |
| 44° 47′ 5.82″ W | - | QHY600 | - s | (1.0 s) | |
| C. Jacques | 1113.00 | - | Clear | ComNTP | |
| 13 UNESP - FEG (Brazil) | 22° 48′ 6.0012″ S | Overcast | T40.6 | IMG | Overcast |
| 45° 11′ 25.5984″ W | - | Merlin 247 Raptor | - s | (0 s) | |
| R. Sfair, A. R. Gomes, Jr | 540.00 | - | Clear | ComGPS | |
| 14 Imbituva - Eugenio Lejambre St. (Brazil) | 25° 13′ 39.6527″ S | Overcast | T30.5 | IMG | Overcast |
| 50° 36′ 41.7111″ W | - | Raptor | - s | (0 s) | |
| Chrystian L. Pereira | 968.00 | - | Clear | CamGPS | |
| 15 GOA (Brazil) | 20° 18′ 1.99998″ S | Overcast | T30.4 | IMG | Overcast |
| 40° 19′ 2″ W | - | Canon 600D | - s | (0 s) | |
| M. Malacarne | 24.00 | - | Clean | ComNTP | |
| 16 F10999 - Curitiba (Brazil) | 25° 26′ 10.3926″ S | Overcast | T25.4 | IMG | Overcast |
| 49° 20′ 23.73″ W | - | QHY174M-GPS | - s | (0 s) | |
| F. B. Ribas | 1024.00 | - | Clear | CamGPS | |
| 2021-05-20 | |||||
| 1 Fountain Hills (USA) | 33° 37′ 27.8868″ N | Clear | T40.6 | IMG | Positive |
| 111° 43′ 39.5879″ W | 12–19 km/h | QHY174M-GPS | 2.0 s | (0 s) | |
| David W. Dunham, Joan Dunham | 518.00 | Moderate | Empty | CamGPS | |
| 2 Scottsdale (USA) | 33° 49′ 0.0984″ N | Clear | T30.0 | VID | Positive |
| AZ | 111° 52′ 7.2984″ W | <2 km/h | WAT910HX | 0.533860 s | (0 s) |
| Tony George | 843.00 | Moderate | Clear | CamGPS | |
| 3 Clear Lake Shores (USA) | 29° 32′ 55.5101″ N | Clear | T20.3 | VID | Positive |
| 95° 2′ 6.57996″ W | 2–5 km/h | Watec 910BD EIA | 1.068 s | (0 s) | |
| P. Stuart | 15.80 | Moderate | None | IOTA-VTI | |
| 4 Barltlett Lake Turnoff (USA) | 33° 50′ 54.8412″ N | Clear | T20.0 | VID | Positive |
| 111° 49′ 58.08″ W | 6–11 km/h | Watec910HX | 0.0333 s | (0 s) | |
| Paul D. Maley | 996.00 | Good | None | CamGPS | |
| 5 Westport Astronomical Society (USA) | 41° 10′ 15.8999″ N | Partly cloudy | T35.6 | IMG | Negative |
| 73° 19′ 39.2999″ W | <2 km/h | QHY174M-GPS | 1.00 s | (0 s) | |
| Kevin Green, Chang Gao | 88.00 | Good | None | CamGPS | |
| 2021-08-17 | |||||
| 1 Heaven’s Mirror Observatory (Australia) | 34° 51′ 50.89″ S | Clear | T50.8 | IMG | Positive |
| 148° 58′ 35.0602″ E | <2 km/h | QHY174M-GPS | 3.0 s | (0 s) | |
| W. Hanna | 536.00 | Moderate | None | CamGPS | |
| 2022-06-02 | |||||
| 1 Glenlee Observatory (Australia) | 23° 16′ 10.0597″ S | Clear | T30.4 | VID | Positive |
| 150° 30′ 1.61841″ E | <2 km/h | Watec 910BD | 0.32 s | (0 s) | |
| Stephen Kerr | 53.40 | Moderate | None | IOTA-VTI | |
| 2022-06-30 | |||||
| 1 Observatório UEPG (Brazil) | 25° 5′ 22.671″ S | Clear | T40.6 | IMG | Positive |
| 50° 5′ 56.7901″ W | <2 km/h | Raptor | 1.0 s | (0 s) | |
| C. L. Pereira, M. Emilio | 923.00 | Moderate | Clear | CamGPS | |
| 2 Observatorio Orion (Brazil) | 23° 34′ 10.2036″ S | Clear | T35.6 | IMG | Positive |
| 47° 12′ 40.5144″ W | 2–5 km/h | ATIK One 9.0 | 3.0 s | (3.0 s) | |
| Tasso Napoleao, Carlos Colesanti | 884.00 | Good | No filter | ComNTP | |
| 3 Yporanga Astronomical (Brazil) | 22° 41′ 49″ S | Clear | T14.0 | IMG | Positive |
| Observatory (YPO) | 45° 31′ 5.99988″ W | <2 km/h | ZWO ASI 6200M | 2.0 s | (1.2 s) |
| J. Mattei | 1640.00 | Good | LRGB | ComGPS | |
| 4 UTFPR-Neoville (Brazil) | 25° 30′ 31.7373″ S | Clear | T11.4 | IMG | Positive |
| 49° 18′ 57.1841″ W | <2 km/h | Sony IMX224LQR | 3.971 s | (0.016 s) | |
| F. B. Ribas, W. G. Ferrante | 937.67 | Good | Clear | ComNTP | |
| 5 SONEAR-CEAMIG Observatory (Brazil) | 20° 42′ 54.27″ S | Clear | T45.0 | IMG | Negative |
| 44° 47′ 5.82″ W | <2 km/h | QHY600 | 2 s | (1.0 s) | |
| C. Jacques | 1113.00 | Good | Clear | ComNTP | |
| 6 Observatorio do Pico dos Dias (Brazil) | 22° 32′ 7.7532″ S | Overcast | T160.0 | IMG | Overcast |
| 45° 34′ 57.54″ W | - | Andor - Ixon | - s | (0 s) | |
| J. I. B. Camargo | 1810.71 | - | Clear | CamGPS | |
| 7 UNESP - FEG (Brazil) | 22° 48′ 6.0012″ S | Clear | T40.6 | IMG | Technical failure |
| 45° 11′ 25.5984″ W | <2 km/h | Merlin 247 Raptor | - s | (0 s) | |
| G. Rossi, R. Sfair | 540.00 | Good | Clear | ComGPS | |
| 8 UTFPR - Neoville (Brazil) | 25° 30′ 31.7373″ S | Clear | T25.4 | IMG | Technical failure |
| 49° 18′ 57.1841″ W | <2 km/h | QHY174M-GPS | - s | (0 s) | |
| F. B. Ribas | 937.67 | Good | Clear | CamGPS | |
| 2023-07-28 | |||||
| 1 SOAR (Chile) | 30° 14′ 16.89″ S | Clear | T410.0 | IMG | Positive |
| 70° 44′ 21.12″ W | 2–5 km/h | Raptor | 0.200 s | (0 s) | |
| J. I. B. Camargo, C. L. Pereira | 2693.95 | Good | Clear | CamGPS | |
| 2 Danish/ESO (Chile) | 29° 15′ 31.7592″ S | Clear | T154.0 | IMG | Positive |
| 70° 44′ 1.464″ W | ~20 km/h | Andor Ixion Ultra | 0.1 s | (0.0 s) | |
| C. Snodgrass, M. Bonavita, G. Columba | 2345.44 | Good | red | CamGPS | |
| 3 Campocatino Austral Observatory (Chile) | 30° 28′ 15.2905″ S | Clear | T61.0 | IMG | Positive |
| 70° 45′ 53.9015″ W | <2 km/h | Moravian C3-PRO | 1.0 s | (0 s) | |
| A. Zapparata, F. Mallia, G. Isopi | 1525.00 | Good | Clear | CamGPS | |
| 4 Observatório do Pico dos Dias (Brazil) | 22° 32′ 49.5658″ S | Clear | T60.0 | IMG | Negative |
| L. Liberato, V. Moura | 45° 26′ 43.8041″ W | 12–19 km/h | Ixon 4269 | 0.2877 s | (0.013 s) |
| A.L. Guimaraes, J. Arcas, Silva | 1112.15 | Moderate | Empty | CamGPS | |
| 5 CASLEO - Cerro Burek HSH (Argentina) | 31° 47′ 13.2″ S | Partly cloudy | T60.0 | IMG | Negative |
| 69° 18′ 24.12″ W | 20–28 km/h | SBig | 6.0 s | (3 s) | |
| Mario Melita, Luis Mammana | 2591.00 | Moderate | Clear | Other | |
| 6 UC Observatory (Chile) | 33° 16′ 8.9364″ S | Clear | T50.0 | IMG | Negative |
| 70° 32′ 4.1352″ W | <2 km/h | Raptor Merlin | 5 s | (0 s) | |
| N. Castro, L. Vanzi, R. Leiva | 1475.20 | Good | Clear | ComGPS | |
| 7 Astroquinta (Chile) | 32° 53′ 0.2796″ S | Clear | T27.9 | IMG | Negative |
| 71° 14′ 55.7412″ W | <2 km/h | QHY168C | 10 s | (2.7 s) | |
| Leo Peiro | 154.14 | Good | L-eNhance | ComNTP | |
Site latitude, longitude (format dms) and elevation (AMSL in m) are given in the WGS84 datum. Telescope: Tx refers to the telescope aperture in cm. Method is the recording method: IMG means digital (CCD, CMOS) sequential imaging, while VID means analogue video recording. TimeSrc refers to the used timing source and method: GPS: 1-PPS (one pulse per second) driven video-time-insertion (VID) or camera-internal GPS timestamps (IMG). NTP: Network Time Protocol computer system clock synchronisation. CamGPS: Camera synchronised directly to a GPS signal for timestamping accuracy. ComGPS: Computer synchronised to a GPS signal. ComNTP: Computer synchronised using the Network Time Protocol. TimeBox: A TimeBox is used for precise time-stamping during observations. IOTA-VTI: A hardware device developed by IOTA (International Occultation Timing Association) for video time insertion. Other: Any other synchronisation method not listed above. Transparency qualitatively describes sky clarity during the observation (e.g. clear, hazy, cloudy, overcast). Seeing qualitatively refers to atmospheric stability affecting image sharpness (e.g. good, moderate, poor). Observation can be either positive (occultation detected/recorded) or negative (occultation not detected). ExpTime represents the exposure time in seconds, while DeadTime refers to the interval between subsequent images in seconds. The sampling cadence is the sum of ExpTime and DeadTime.
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