RECON: TNO occultation with 533559

Event between (533559) 14JG80 and star GA0700:18571875 with event index number of 2589006

Geocentric closest approach at 2028/04/17 09:41:50 UTC

J2000 position of star is 17:52:51.4 -18:02:26
Equinox of date position of star is 17:54:11.9 -18:02:39
Stellar brightness G=16.1, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 38 degrees from the moon. Moon is 43% illuminated.
TNO apparent brightness V=22.3

[RECON map]
TNO is 26.4 AU from the Sun and 25.8 AU from the Earth.
The TNO is moving 9.8 km/sec on the sky relative to the star, or, 1.9 arcsec/hr.
The 1-sigma error in the time of the event is 374 seconds.
The 1-sigma cross-track error in the shadow position is 2544 km.
The sky-plane scale is 18746.5 km/arcsec.

The TNO has an absolute magnitude Hv=7.9
Diameter=157.8 km assuming a 5% albedo -- 16.3 sec chord
Diameter=64.4 km assuming a 30% albedo -- 6.6 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 533559, (2028/04/17 09:45UT)
Object            RA         Dec     mag  sep  mel
Antares        16:31:08.8 -26:29:32  0.9 21.02  56
35Eta Oph      17:12:00.2 -15:45:28  2.6 10.42  48
PPM 233754     17:57:34.9 -18:48:16  6.5  1.05  37
PPM 233701     17:54:02.8 -18:05:41  7.9  0.12  38
533559         17:54:30.8 -18:02:41 16.1        37
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 2.4 sigma about the mid-time.
The median site spacing is 22.2 km RECON observability=0.5 and success probability=5.2%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Sleaford 09:44:14 -18.3 Dark Up 17.3 158.1 Really Low 09:29:14 - 09:59:14 3311
Kamloops 09:45:45 -24.5 Dark Down 14.3 144.7 Really Low 09:30:45 - 10:00:45 3114
Kelowna 09:45:44 -24.9 Dark Down 15.3 145.4 Really Low 09:30:44 - 10:00:44 3088
Peachland 09:45:46 -25.1 Dark Down 15.3 145.1 Really Low 09:30:46 - 10:00:46 3080
Summerland 09:45:47 -25.2 Dark Down 15.5 145.2 Really Low 09:30:47 - 10:00:47 3074
Penticton 09:45:46 -25.2 Dark Down 15.6 145.2 Really Low 09:30:46 - 10:00:46 3072
Oliver 09:45:49 -25.5 Dark Down 15.8 145.2 Really Low 09:30:49 - 10:00:49 3056
Anarchist Mountain Observatory 09:45:48 -25.6 Dark Down 16.1 145.3 Really Low 09:30:48 - 10:00:48 3050
Okanogan 09:45:52 -26.3 Dark Down 16.5 145.1 Really Low 09:30:52 - 10:00:52 3016
Brewster 09:45:56 -26.6 Dark Down 16.7 144.8 Really Low 09:30:56 - 10:00:56 3001
Manson/Chelan 09:45:58 -26.9 Dark Down 16.7 144.5 Really Low 09:30:58 - 10:00:58 2986
Victoria 09:46:05 -27.3 Dark Down 14.9 141.7 Really Low 09:31:05 - 10:01:05 2976
Wenatchee 09:46:01 -27.3 Dark Down 17.0 144.2 Really Low 09:31:01 - 10:01:01 2960
Ellensburg 09:46:05 -27.8 Dark Down 17.3 144.0 Really Low 09:31:05 - 10:01:05 2936
Yakima 09:46:05 -28.1 Dark Down 17.6 143.9 Really Low 09:31:05 - 10:01:05 2915
PNWRO 09:45:59 -28.0 Dark Down 18.7 145.3 Really Low 09:30:59 - 10:00:59 2906
Toppenish/White Swan 09:46:05 -28.2 Dark Down 17.8 144.0 Really Low 09:31:05 - 10:01:05 2906
The Dalles 09:46:05 -29.2 Dark Down 18.1 143.1 Really Low 09:31:05 - 10:01:05 2857
Maupin 09:46:05 -29.5 Dark Down 18.5 143.2 Really Low 09:31:05 - 10:01:05 2836
Sisters 09:46:05 -30.5 Dark Down 19.0 142.5 Really Low 09:31:05 - 10:01:05 2786
Bend 09:46:05 -30.6 Dark Down 19.3 142.7 Really Low 09:31:05 - 10:01:05 2776
Oregon Observatory 09:46:05 -30.8 Dark Down 19.4 142.6 Really Low 09:31:05 - 10:01:05 2766
Dunrhomin 09:44:43 -26.4 Dark Up 28.5 157.0 Low 09:29:43 - 09:59:43 2731
CU-SBO 09:44:45 -26.6 Dark Up 28.7 156.9 Low 09:29:45 - 09:59:45 2716
Chiloquin 09:46:05 -32.1 Dark Down 20.2 141.9 Low 09:31:05 - 10:01:05 2693
Klamath Falls 09:46:05 -32.3 Dark Down 20.6 141.9 Low 09:31:05 - 10:01:05 2676
Cedarville 09:46:05 -32.3 Dark Down 21.8 143.2 Low 09:31:05 - 10:01:05 2650
Fall River/Burney 09:46:05 -33.2 Dark Down 21.7 142.0 Low 09:31:05 - 10:01:05 2615
Gimple 09:46:05 -33.8 Dark Down 22.6 142.2 Low 09:31:05 - 10:01:05 2567
Greenville 09:46:05 -33.8 Dark Down 22.6 142.1 Low 09:31:05 - 10:01:05 2567
Quincy 09:46:05 -34.0 Dark Down 22.7 142.1 Low 09:31:05 - 10:01:05 2556
Portola 09:46:05 -33.9 Dark Down 23.1 142.5 Low 09:31:05 - 10:01:05 2552
Reno 09:46:05 -33.9 Dark Down 23.6 143.0 Low 09:31:05 - 10:01:05 2540
Carson City 09:46:05 -34.2 Dark Down 23.9 142.9 Low 09:31:05 - 10:01:05 2520
Yerington 09:46:05 -34.1 Dark Up 24.3 143.4 Low 09:31:05 - 10:01:05 2512
Gardnerville 09:46:05 -34.4 Dark Down 24.1 142.9 Low 09:31:05 - 10:01:05 2506
Hawthorne 09:46:05 -34.2 Dark Up 24.9 143.8 Low 09:31:05 - 10:01:05 2488
Lee Vining 09:46:05 -34.9 Dark Up 25.2 143.2 Low 09:31:05 - 10:01:05 2452
Bishop 09:46:05 -35.1 Dark Up 26.0 143.7 Low 09:31:05 - 10:01:05 2419
Beatty 09:46:05 -34.7 Dark Up 27.1 145.1 Low 09:31:05 - 10:01:05 2401
Patrick 09:46:05 -34.4 Dark Up 29.7 147.4 Low 09:31:05 - 10:01:05 2332
Laughlin/Bullhead City 09:46:05 -35.0 Dark Up 29.6 146.6 Low 09:31:05 - 10:01:05 2307
Lake Havasu City 09:46:05 -35.4 Dark Up 30.2 146.7 Up 09:31:05 - 10:01:05 2263
George/Scottsdale 09:45:56 -34.6 Dark Up 32.0 148.8 Up 09:30:56 - 10:00:56 2239
Wildwood 09:46:05 -37.9 Dark Up 28.5 142.5 Low 09:31:05 - 10:01:05 2216
Idyllwild 09:46:05 -37.2 Dark Up 29.7 144.1 Low 09:31:05 - 10:01:05 2197
Calipatria 09:46:05 -37.1 Dark Up 30.8 145.0 Up 09:31:05 - 10:01:05 2160
Yuma 09:46:05 -36.9 Dark Up 31.6 145.8 Up 09:31:05 - 10:01:05 2136

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 533559, (2028/04/17 09:45UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 21.02  56
35Eta Oph      17:10:22.7 -15:43:29  2.6 10.42  48
PPM 233754     17:55:55.0 -18:48:08  6.5  1.05  37
PPM 233701     17:52:23.4 -18:05:24  7.9  0.12  38
533559         17:52:51.4 -18:02:26 16.1        38
Positions are for J2000

Event circumstances last updated at 2022/11/29 02:53:55 UT

Marc W. Buie, Southwest Research Institute

RECON