RECON: TNO occultation with 533398

Event between (533398) 14GA54 and star GA0760:12017047 with event index number of 2164670

Geocentric closest approach at 2027/07/14 07:57:25 UTC

J2000 position of star is 18:06:01.7 -13:36:56
Equinox of date position of star is 18:07:17.7 -13:36:43
Stellar brightness G=15.5, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 31 degrees from the moon. Moon is 83% illuminated.
TNO apparent brightness V=22.1

[RECON map]
TNO is 31.0 AU from the Sun and 30.1 AU from the Earth.
The TNO is moving 21.9 km/sec on the sky relative to the star, or, 3.6 arcsec/hr.
The 1-sigma error in the time of the event is 276 seconds.
The 1-sigma cross-track error in the shadow position is 1703 km.
The sky-plane scale is 21819.7 km/arcsec.

The TNO has an absolute magnitude Hv=7.2
Diameter=215.8 km assuming a 5% albedo -- 9.8 sec chord
Diameter=88.1 km assuming a 30% albedo -- 4.0 sec chord
Dynamical classification is 8:5EEE
 
 
 
 
 
 

Star training set for 533398, (2027/07/14 07:57UT)
Object            RA         Dec     mag  sep  mel
Antares        16:31:06.0 -26:29:26  0.9 25.99   6
35Eta Oph      17:11:57.5 -15:45:25  2.6 13.62  19
PPM 234113     18:11:17.2 -13:55:39  6.4  0.95  32
PPM 234024     18:07:35.2 -13:38:18  9.9  0.03  31
533398         18:07:35.3 -13:36:40 15.5        32
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 3.3 sigma about the mid-time.
The median site spacing is 19.3 km RECON observability=1.0 and success probability=19.9%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kamloops 07:55:48 -17.6 AT Up 23.6 200.2 Low 07:40:48 - 08:10:48 1617
Kelowna 07:55:45 -18.4 Dark Up 24.1 201.3 Low 07:40:45 - 08:10:45 1560
Peachland 07:55:46 -18.5 Dark Up 24.3 201.0 Low 07:40:46 - 08:10:46 1559
Summerland 07:55:45 -18.7 Dark Up 24.4 201.1 Low 07:40:45 - 08:10:45 1549
Victoria 07:55:56 -19.6 Dark Up 26.3 197.4 Low 07:40:56 - 08:10:56 1547
Penticton 07:55:45 -18.8 Dark Up 24.5 201.2 Low 07:40:45 - 08:10:45 1543
Oliver 07:55:45 -19.1 Dark Up 24.8 201.3 Low 07:40:45 - 08:10:45 1524
Anarchist Mountain Observatory 07:55:44 -19.3 Dark Up 24.9 201.5 Low 07:40:44 - 08:10:44 1512
Tonasket 07:55:44 -19.6 Dark Up 25.2 201.5 Low 07:40:44 - 08:10:44 1495
Okanogan 07:55:44 -19.9 Dark Up 25.6 201.4 Low 07:40:44 - 08:10:44 1479
Brewster 07:55:44 -20.2 Dark Up 25.9 201.2 Low 07:40:44 - 08:10:44 1466
Manson/Chelan 07:55:45 -20.4 Dark Up 26.2 200.9 Low 07:40:45 - 08:10:45 1460
Sleaford 07:55:11 -15.6 AT Down 18.3 214.2 Really Low 07:40:11 - 08:10:11 1460
Wenatchee 07:55:46 -20.9 Dark Up 26.6 200.8 Low 07:40:46 - 08:10:46 1436
Ellensburg 07:55:46 -21.3 Dark Up 27.1 200.6 Low 07:40:46 - 08:10:46 1415
Yakima 07:55:46 -21.7 Dark Up 27.5 200.7 Low 07:40:46 - 08:10:46 1391
Toppenish/White Swan 07:55:45 -21.9 Dark Up 27.6 200.9 Low 07:40:45 - 08:10:45 1376
Goldendale 07:55:46 -22.4 Dark Up 28.2 200.6 Low 07:40:46 - 08:10:46 1350
The Dalles 07:55:47 -22.6 Dark Up 28.5 200.2 Low 07:40:47 - 08:10:47 1342
PNWRO 07:55:40 -22.3 Dark Up 27.6 202.6 Low 07:40:40 - 08:10:40 1329
Maupin 07:55:46 -23.1 Dark Up 28.9 200.4 Low 07:40:46 - 08:10:46 1315
Sisters 07:55:47 -23.9 Dark Up 29.9 200.1 Low 07:40:47 - 08:10:47 1269
Bend 07:55:46 -24.2 Dark Up 30.0 200.4 Up 07:40:46 - 08:10:46 1249
Oregon Observatory 07:55:47 -24.3 Dark Up 30.2 200.3 Up 07:40:47 - 08:10:47 1241
North Lake 07:55:45 -25.0 Dark Up 30.7 201.0 Up 07:40:45 - 08:10:45 1191
Chiloquin 07:55:47 -25.6 Dark Up 31.6 200.1 Up 07:40:47 - 08:10:47 1163
Klamath Falls 07:55:47 -26.0 Dark Up 31.9 200.3 Up 07:40:47 - 08:10:47 1139
Lakeview 07:55:42 -26.1 Dark Up 31.5 201.8 Up 07:40:42 - 08:10:42 1112
Cedarville 07:55:41 -26.7 Dark Up 32.1 202.2 Up 07:40:41 - 08:10:41 1065
Fall River/Burney 07:55:45 -27.2 Dark Up 32.9 200.9 Up 07:40:45 - 08:10:45 1054
Susanville 07:55:42 -27.8 Dark Up 33.2 201.9 Up 07:40:42 - 08:10:42 998
Greenville 07:55:43 -28.1 Dark Up 33.6 201.6 Up 07:40:43 - 08:10:43 984
Gimple 07:55:42 -28.1 Dark Up 33.6 201.7 Up 07:40:42 - 08:10:42 982
Quincy 07:55:43 -28.3 Dark Up 33.8 201.7 Up 07:40:43 - 08:10:43 970
Portola 07:55:41 -28.4 Dark Up 33.8 202.3 Up 07:40:41 - 08:10:41 953
Reno 07:55:38 -28.7 Dark Up 33.8 203.0 Up 07:40:38 - 08:10:38 922
Carson City 07:55:38 -29.1 Dark Up 34.1 203.2 Up 07:40:38 - 08:10:38 897
Gardnerville 07:55:38 -29.3 Dark Up 34.3 203.3 Up 07:40:38 - 08:10:38 878
Yerington 07:55:36 -29.3 Dark Up 34.1 203.9 Up 07:40:36 - 08:10:36 871
Hawthorne 07:55:33 -29.8 Dark Up 34.4 204.6 Up 07:40:33 - 08:10:33 828
Lee Vining 07:55:35 -30.3 Dark Up 35.0 204.2 Up 07:40:35 - 08:10:35 797
Tonopah 07:55:28 -30.3 Dark Up 34.3 206.3 Up 07:40:28 - 08:10:28 767
Bishop 07:55:32 -30.9 Dark Up 35.3 205.2 Up 07:40:32 - 08:10:32 738
Dunrhomin 07:54:50 -27.0 Dark Up 27.6 217.8 Low 07:39:50 - 08:09:50 680
Beatty 07:55:26 -31.4 Dark Up 35.2 207.1 Up 07:40:26 - 08:10:26 672
CU-SBO 07:54:50 -27.3 Dark Up 27.8 217.8 Low 07:39:50 - 08:09:50 664
Indian Springs 07:55:22 -31.7 Dark Up 35.1 208.4 Up 07:40:22 - 08:10:22 625
Henderson 07:55:19 -32.2 Dark Up 35.3 209.3 Up 07:40:19 - 08:10:19 570
Patrick 07:55:14 -32.8 Dark Up 35.4 210.8 Up 07:40:14 - 08:10:14 499
Laughlin/Bullhead City 07:55:17 -33.1 Dark Up 35.9 210.1 Up 07:40:17 - 08:10:17 495
Wildwood 07:55:31 -34.2 Dark Up 38.4 206.0 Up 07:40:31 - 08:10:31 494
Kingman/Dolan Springs 07:55:15 -33.0 Dark Up 35.7 210.6 Up 07:40:15 - 08:10:15 486
Mohave Valley 07:55:17 -33.4 Dark Up 36.1 210.2 Up 07:40:17 - 08:10:17 473
Lake Havasu City 07:55:15 -33.7 Dark Up 36.4 210.6 Up 07:40:15 - 08:10:15 437
Idyllwild 07:55:24 -34.6 Dark Up 38.0 208.3 Up 07:40:24 - 08:10:24 428
Parker 07:55:15 -34.1 Dark Up 36.7 210.8 Up 07:40:15 - 08:10:15 409
Calipatria 07:55:19 -35.2 Dark Up 38.0 209.8 Up 07:40:19 - 08:10:19 354
George/Scottsdale 07:55:06 -34.4 Dark Up 36.0 213.5 Up 07:40:06 - 08:10:06 323
Yuma 07:55:15 -35.6 Dark Up 38.0 211.0 Up 07:40:15 - 08:10:15 300

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, (2027/07/14 07:57UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 25.99   6
35Eta Oph      17:10:22.7 -15:43:29  2.6 13.62  19
PPM 234113     18:09:43.4 -13:56:04  6.4  0.95  32
PPM 234024     18:06:01.6 -13:38:35  9.9  0.03  31
533398         18:06:01.7 -13:36:56 15.5        31
Positions are for J2000

Event circumstances last updated at 2022/05/09 22:57:46 UT

Marc W. Buie, Southwest Research Institute

RECON