RECON: TNO occultation with 533559

Event between (533559) 14JG80 and star GA0700:17227059 with event index number of 2589088

Geocentric closest approach at 2028/05/30 10:44:52 UTC

J2000 position of star is 17:48:41.2 -18:04:37
Equinox of date position of star is 17:50:01.6 -18:04:58
Stellar brightness G=16.5, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 119 degrees from the moon. Moon is 40% illuminated.
TNO apparent brightness V=22.1

[RECON map]
TNO is 26.3 AU from the Sun and 25.4 AU from the Earth.
The TNO is moving 23.7 km/sec on the sky relative to the star, or, 4.6 arcsec/hr.
The 1-sigma error in the time of the event is 150 seconds.
The 1-sigma cross-track error in the shadow position is 2471 km.
The sky-plane scale is 18398.7 km/arcsec.

The TNO has an absolute magnitude Hv=7.9
Diameter=157.8 km assuming a 5% albedo -- 6.8 sec chord
Diameter=64.4 km assuming a 30% albedo -- 2.8 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 533559, (2028/05/30 10:46UT)
Object            RA         Dec     mag  sep  mel
Antares        16:31:09.3 -26:29:33  0.9 20.12 101
35Eta Oph      17:12:00.6 -15:45:29  2.6  9.46 110
PPM 233754     17:57:35.3 -18:48:16  6.5  1.86 121
PPM 233593     17:49:06.9 -18:06:54  7.7  0.29 119
PPM 233620     17:50:35.9 -18:16:40  9.4  0.20 119
533559         17:50:20.9 -18:05:03 16.5       120
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 23.1 km RECON observability=0.5 and success probability=1.4%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kamloops 10:43:35 -8.9 NT Down 18.6 201.9 Really Low 10:30:37 - 10:56:34 7396
Kelowna 10:43:32 -9.2 NT Down 19.2 202.9 Really Low 10:30:34 - 10:56:31 7348
Peachland 10:43:33 -9.4 NT Down 19.3 202.6 Really Low 10:30:34 - 10:56:31 7347
Summerland 10:43:33 -9.5 NT Down 19.4 202.7 Really Low 10:30:34 - 10:56:31 7339
Penticton 10:43:32 -9.5 NT Down 19.5 202.8 Really Low 10:30:33 - 10:56:30 7335
Victoria 10:43:42 -11.8 NT Down 21.3 199.2 Low 10:30:43 - 10:56:40 7333
Oliver 10:43:31 -9.8 NT Down 19.8 202.9 Really Low 10:30:33 - 10:56:30 7318
Anarchist Mountain Observatory 10:43:31 -9.8 NT Down 19.9 203.1 Really Low 10:30:32 - 10:56:29 7308
Okanogan 10:43:31 -10.4 NT Down 20.6 203.0 Low 10:30:32 - 10:56:29 7280
Brewster 10:43:31 -10.7 NT Down 20.9 202.8 Low 10:30:32 - 10:56:29 7269
Manson/Chelan 10:43:32 -11.0 NT Down 21.2 202.5 Low 10:30:33 - 10:56:30 7264
Sleaford 10:43:02 -1.7 CT Down 13.1 215.1 Really Low 10:30:03 - 10:56:00 7260
Wenatchee 10:43:32 -11.5 NT Down 21.6 202.4 Low 10:30:33 - 10:56:30 7243
Ellensburg 10:43:32 -11.9 NT Down 22.1 202.2 Low 10:30:33 - 10:56:30 7225
Yakima 10:43:31 -12.2 AT Down 22.5 202.3 Low 10:30:33 - 10:56:30 7205
Toppenish/White Swan 10:43:31 -12.3 AT Down 22.6 202.5 Low 10:30:32 - 10:56:29 7191
The Dalles 10:43:32 -13.2 AT Down 23.5 201.8 Low 10:30:34 - 10:56:31 7161
PNWRO 10:43:26 -11.9 NT Down 22.5 204.0 Low 10:30:28 - 10:56:25 7153
Maupin 10:43:31 -13.5 AT Down 23.9 202.0 Low 10:30:33 - 10:56:30 7138
Sisters 10:43:33 -14.4 AT Down 24.8 201.6 Low 10:30:34 - 10:56:31 7097
Bend 10:43:31 -14.5 AT Down 25.0 201.9 Low 10:30:32 - 10:56:29 7081
Oregon Observatory 10:43:32 -14.7 AT Down 25.2 201.8 Low 10:30:33 - 10:56:30 7073
Chiloquin 10:43:32 -15.9 AT Down 26.5 201.7 Low 10:30:33 - 10:56:30 7005
Klamath Falls 10:43:31 -16.2 AT Down 26.8 201.8 Low 10:30:32 - 10:56:29 6984
Cedarville 10:43:25 -16.0 AT Down 27.0 203.5 Low 10:30:27 - 10:56:24 6922
Fall River/Burney 10:43:28 -16.9 AT Down 27.8 202.4 Low 10:30:30 - 10:56:27 6909
Greenville 10:43:26 -17.4 AT Down 28.5 203.0 Low 10:30:28 - 10:56:25 6848
Gimple 10:43:26 -17.4 AT Down 28.5 203.1 Low 10:30:28 - 10:56:25 6847
Quincy 10:43:26 -17.6 AT Down 28.7 203.1 Low 10:30:28 - 10:56:25 6836
Portola 10:43:24 -17.4 AT Down 28.7 203.6 Low 10:30:26 - 10:56:23 6822
Reno 10:43:22 -17.3 AT Down 28.7 204.3 Low 10:30:23 - 10:56:20 6796
Carson City 10:43:22 -17.6 AT Down 29.0 204.4 Low 10:30:23 - 10:56:20 6773
Gardnerville 10:43:21 -17.7 AT Down 29.3 204.5 Low 10:30:23 - 10:56:20 6757
Yerington 10:43:19 -17.4 AT Down 29.0 205.1 Low 10:30:21 - 10:56:18 6751
Hawthorne 10:43:17 -17.5 AT Down 29.3 205.7 Low 10:30:18 - 10:56:15 6714
Lee Vining 10:43:18 -18.2 Dark Down 29.9 205.4 Low 10:30:20 - 10:56:17 6685
Bishop 10:43:15 -18.3 Dark Down 30.2 206.3 Up 10:30:17 - 10:56:14 6634
Dunrhomin 10:42:38 -8.9 NT Down 22.4 218.0 Low 10:29:40 - 10:55:37 6590
Beatty 10:43:09 -17.7 AT Down 30.1 208.0 Up 10:30:11 - 10:56:08 6577
CU-SBO 10:42:38 -9.1 NT Down 22.6 218.0 Low 10:29:40 - 10:55:37 6576
Patrick 10:42:58 -17.2 AT Down 30.2 211.3 Up 10:30:00 - 10:55:57 6426
Laughlin/Bullhead City 10:43:00 -17.8 AT Down 30.7 210.7 Up 10:30:02 - 10:55:59 6421
Wildwood 10:43:13 -20.8 Dark Down 33.2 206.9 Up 10:30:14 - 10:56:11 6413
Lake Havasu City 10:42:59 -18.1 Dark Down 31.2 211.1 Up 10:30:00 - 10:55:57 6369
Idyllwild 10:43:06 -20.0 Dark Down 32.8 209.0 Up 10:30:08 - 10:56:05 6357
Calipatria 10:43:02 -19.8 Dark Down 32.9 210.4 Up 10:30:03 - 10:56:00 6291
George/Scottsdale 10:42:50 -17.2 AT Down 30.8 213.8 Up 10:29:51 - 10:55:48 6268
Yuma 10:42:58 -19.5 Dark Down 32.9 211.4 Up 10:30:00 - 10:55:57 6244

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, (2028/05/30 10:46UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 20.12 101
35Eta Oph      17:10:22.7 -15:43:29  2.6  9.46 110
PPM 233754     17:55:55.0 -18:48:08  6.5  1.86 121
PPM 233593     17:47:27.1 -18:06:25  7.7  0.29 119
PPM 233620     17:48:56.0 -18:16:15  9.4  0.20 119
533559         17:48:41.2 -18:04:37 16.5       119
Positions are for J2000

Event circumstances last updated at 2022/11/30 02:47:02 UT

Marc W. Buie, Southwest Research Institute

RECON