RECON: TNO occultation with 533398

Event between (533398) 14GA54 and star GA0780:06867480 with event index number of 2163668

Geocentric closest approach at 2023/05/09 08:08:50 UTC

J2000 position of star is 17:34:32.6 -11:30:21
Equinox of date position of star is 17:35:50.5 -11:31:11
Stellar brightness G=16.9, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 20 degrees from the moon. Moon is 84% illuminated.
Apparent brightness V=22.2

[RECON map]
Object is 31.2 AU from the Sun and 30.4 AU from the Earth.
Apparent velocity is 18.1 km/sec on the sky relative to the star, or, 3.0 arcsec/hr.
The 1-sigma error in the time of the event is 161 seconds.
The 1-sigma cross-track error in the shadow position is 1289 km.
The sky-plane scale is 22071.7 km/arcsec.

The object has an absolute magnitude Hv=7.2
Diameter=215.8 km assuming a 5% albedo -- 11.9 sec chord
Diameter=88.1 km assuming a 30% albedo -- 4.9 sec chord
Dynamical classification is 8:5EEE
 
 
 
 
 
 

Star training set for 533398, (2023/05/09 08:09UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:50.6 -26:28:54  0.9 21.40  25
35Eta Oph      17:11:43.1 -15:45:08  2.6  7.23  21
PPM 233365     17:39:27.3 -10:56:18  5.7  1.06  20
PPM 233287     17:36:41.6 -11:32:47  8.5  0.21  20
533398         17:35:50.7 -11:31:11 16.9        20
Positions are for equinox of date

This table contains the target star visibility for the RECON network. The observing range has been set to a maximum of 5.0 sigma about the mid-time.
The median site spacing is 18.4 km RECON observability=1.0 and success probability=0.0%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Sleaford 08:10:56 -18.9 Dark Up 24.1 158.5 Low 07:57:00 - 08:24:52 11540
Kamloops 08:11:45 -21.9 Dark Up 21.1 143.9 Low 07:57:49 - 08:25:41 11212
Kelowna 08:11:44 -22.7 Dark Up 22.1 144.5 Low 07:57:48 - 08:25:40 11177
Peachland 08:11:45 -22.8 Dark Up 22.0 144.2 Low 07:57:49 - 08:25:41 11165
Summerland 08:11:46 -23.0 Dark Up 22.2 144.3 Low 07:57:50 - 08:25:42 11157
Penticton 08:11:45 -23.0 Dark Up 22.3 144.4 Low 07:57:49 - 08:25:41 11155
Oliver 08:11:47 -23.4 Dark Up 22.6 144.3 Low 07:57:51 - 08:25:43 11132
Anarchist Mountain Observatory 08:11:46 -23.6 Dark Up 22.8 144.4 Low 07:57:50 - 08:25:42 11125
Okanogan 08:11:48 -24.2 Dark Up 23.2 144.1 Low 07:57:52 - 08:25:44 11079
Brewster 08:11:49 -24.5 Dark Up 23.4 143.8 Low 07:57:53 - 08:25:45 11057
Manson/Chelan 08:11:52 -24.7 Dark Up 23.4 143.4 Low 07:57:56 - 08:25:48 11036
Victoria 08:12:00 -24.2 Dark Up 21.6 140.5 Low 07:58:04 - 08:25:56 11017
Wenatchee 08:11:52 -25.2 Dark Up 23.7 143.1 Low 07:57:56 - 08:25:48 11001
Ellensburg 08:11:53 -25.6 Dark Up 24.0 142.8 Low 07:57:57 - 08:25:49 10969
Yakima 08:11:55 -26.0 Dark Up 24.3 142.7 Low 07:57:59 - 08:25:51 10941
PNWRO 08:11:50 -26.5 Dark Up 25.4 144.1 Low 07:57:54 - 08:25:46 10933
Toppenish/White Swan 08:11:55 -26.2 Dark Up 24.5 142.8 Low 07:57:59 - 08:25:51 10929
The Dalles 08:11:58 -27.0 Dark Up 24.8 141.8 Low 07:58:02 - 08:25:54 10860
Maupin 08:11:58 -27.4 Dark Up 25.2 141.8 Low 07:58:02 - 08:25:54 10832
Dunrhomin 08:11:04 -29.9 Dark Up 35.3 156.8 Up 07:57:08 - 08:25:00 10796
Nikitin 08:11:04 -30.1 Dark Up 35.4 156.7 Up 07:57:08 - 08:25:00 10783
CU-SBO 08:11:05 -30.2 Dark Up 35.5 156.6 Up 07:57:09 - 08:25:01 10776
Sisters 08:12:01 -28.3 Dark Up 25.7 141.1 Low 07:58:05 - 08:25:57 10760
Bend 08:12:01 -28.6 Dark Up 26.0 141.2 Low 07:58:05 - 08:25:57 10748
Oregon Observatory 08:12:01 -28.8 Dark Up 26.0 141.1 Low 07:58:05 - 08:25:57 10733
Chiloquin 08:12:05 -30.1 Dark Up 26.9 140.3 Low 07:58:09 - 08:26:01 10627
Klamath Falls 08:12:07 -30.4 Dark Up 27.2 140.2 Low 07:58:11 - 08:26:03 10603
Cedarville 08:12:02 -31.0 Dark Up 28.5 141.6 Low 07:58:06 - 08:25:58 10585
Fall River/Burney 08:12:07 -31.6 Dark Up 28.3 140.2 Low 07:58:11 - 08:26:03 10522
Gimple 08:12:06 -32.5 Dark Up 29.2 140.4 Low 07:58:10 - 08:26:02 10464
Greenville 08:12:06 -32.5 Dark Up 29.2 140.3 Low 07:58:10 - 08:26:02 10462
Portola 08:12:05 -32.8 Dark Up 29.7 140.7 Low 07:58:09 - 08:26:01 10447
Quincy 08:12:06 -32.7 Dark Up 29.3 140.3 Low 07:58:10 - 08:26:02 10446
Reno 08:12:03 -33.0 Dark Up 30.2 141.2 Up 07:58:07 - 08:25:59 10441
Carson City 08:12:03 -33.4 Dark Up 30.5 141.1 Up 07:58:07 - 08:25:59 10413
Yerington 08:12:02 -33.5 Dark Up 30.9 141.7 Up 07:58:06 - 08:25:58 10412
Gardnerville 08:12:03 -33.6 Dark Up 30.7 141.1 Up 07:58:07 - 08:25:59 10395
Hawthorne 08:12:00 -33.9 Dark Up 31.5 142.0 Up 07:58:04 - 08:25:56 10387
Lee Vining 08:12:02 -34.5 Dark Up 31.8 141.3 Up 07:58:06 - 08:25:58 10331
Bishop 08:12:00 -35.1 Dark Up 32.6 141.8 Up 07:58:04 - 08:25:56 10299
Beatty 08:11:54 -35.4 Dark Up 33.7 143.2 Up 07:57:58 - 08:25:50 10298
Patrick 08:11:44 -36.4 Dark Up 36.3 145.6 Up 07:57:48 - 08:25:40 10242
Laughlin/Bullhead City 08:11:47 -36.8 Dark Up 36.2 144.8 Up 07:57:51 - 08:25:43 10206
Lake Havasu City 08:11:47 -37.4 Dark Up 36.8 144.8 Up 07:57:51 - 08:25:43 10156
George/Scottsdale 08:11:37 -37.7 Dark Up 38.6 147.1 Up 07:57:41 - 08:25:33 10147
Idyllwild 08:11:58 -38.5 Dark Up 36.3 142.0 Up 07:58:02 - 08:25:54 10039
Wildwood 08:12:05 -38.3 Dark Up 35.0 140.2 Up 07:58:09 - 08:26:01 10025
Calipatria 08:11:53 -38.9 Dark Up 37.3 142.9 Up 07:57:57 - 08:25:49 10014
Yuma 08:11:50 -39.2 Dark Up 38.1 143.6 Up 07:57:54 - 08:25:46 9998

Azimuth is measured in degrees eastward from north. North is at an azimuth of 0, due East is at an azimuth of 90 degrees, due South is 180, and due West is 270.

Do not use the listing below for the RECON CPC 1100 telescopes. This is provided for other non-team facilities.

Star training set for 533398, (2023/05/09 08:09UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 21.40  25
35Eta Oph      17:10:22.7 -15:43:29  2.6  7.23  21
PPM 233365     17:38:09.5 -10:55:35  5.7  1.06  20
PPM 233287     17:35:23.5 -11:31:58  8.5  0.21  20
533398         17:34:32.6 -11:30:21 16.9        20
Positions are for J2000

Event circumstances last updated at 2023/04/20 03:42:36 UT

Marc W. Buie, Southwest Research Institute

RECON