RECON: TNO occultation with 533398

Event between (533398) 14GA54 and star GA0780:06536073 with event index number of 2163708

Geocentric closest approach at 2023/07/15 08:12:12 UTC

J2000 position of star is 17:28:00.2 -11:29:06
Equinox of date position of star is 17:29:18.1 -11:30:09
Stellar brightness G=15.4, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 164 degrees from the moon. Moon is 6% 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 19.9 km/sec on the sky relative to the star, or, 3.3 arcsec/hr.
The 1-sigma error in the time of the event is 129 seconds.
The 1-sigma cross-track error in the shadow position is 1338 km.
The sky-plane scale is 22023.2 km/arcsec.

The object has an absolute magnitude Hv=7.2
Diameter=215.8 km assuming a 5% albedo -- 10.8 sec chord
Diameter=88.1 km assuming a 30% albedo -- 4.4 sec chord
Dynamical classification is 8:5EEE
 
 
 
 
 
 

Star training set for 533398, (2023/07/15 08:12UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:51.3 -26:28:56  0.9 20.34 164
35Eta Oph      17:11:43.8 -15:45:09  2.6  6.03 167
53Nu Ser       17:22:09.2 -12:52:08  4.0  2.22 165
PPM 233145     17:31:06.8 -11:09:39  7.7  0.56 164
PPM 233118     17:29:56.3 -11:31:04  9.7  0.15 164
533398         17:29:18.9 -11:30:10 15.4       164
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 21.5 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)
Kamloops 08:09:42 -17.8 AT Down 21.5 215.0 Low 07:58:25 - 08:20:58 7031
Kelowna 08:09:37 -18.6 Dark Down 21.9 216.0 Low 07:58:21 - 08:20:54 6965
Peachland 08:09:38 -18.7 Dark Down 22.1 215.8 Low 07:58:22 - 08:20:55 6964
Summerland 08:09:38 -18.8 Dark Down 22.1 215.9 Low 07:58:21 - 08:20:54 6953
Victoria 08:09:47 -19.9 Dark Down 24.4 212.5 Low 07:58:30 - 08:21:03 6948
Penticton 08:09:37 -18.9 Dark Down 22.2 216.0 Low 07:58:20 - 08:20:53 6947
Oliver 08:09:37 -19.3 Dark Down 22.4 216.1 Low 07:58:20 - 08:20:53 6924
Anarchist Mountain Observatory 08:09:36 -19.4 Dark Down 22.5 216.3 Low 07:58:19 - 08:20:52 6910
Sleaford 08:09:07 -15.2 AT Down 14.6 228.1 Really Low 07:57:51 - 08:20:24 6877
Okanogan 08:09:34 -20.1 Dark Down 23.1 216.3 Low 07:58:18 - 08:20:51 6872
Brewster 08:09:35 -20.4 Dark Down 23.4 216.2 Low 07:58:19 - 08:20:52 6858
Manson/Chelan 08:09:36 -20.6 Dark Down 23.7 215.9 Low 07:58:19 - 08:20:52 6851
Wenatchee 08:09:36 -21.0 Dark Down 24.2 215.8 Low 07:58:19 - 08:20:52 6823
Ellensburg 08:09:36 -21.5 Dark Down 24.6 215.7 Low 07:58:19 - 08:20:52 6799
Yakima 08:09:34 -21.9 Dark Down 24.9 215.8 Low 07:58:18 - 08:20:51 6772
Toppenish/White Swan 08:09:34 -22.1 Dark Down 25.1 216.0 Low 07:58:17 - 08:20:50 6755
The Dalles 08:09:35 -22.9 Dark Down 26.0 215.4 Low 07:58:19 - 08:20:52 6716
PNWRO 08:09:29 -22.4 Dark Down 24.7 217.6 Low 07:58:12 - 08:20:45 6703
Maupin 08:09:33 -23.3 Dark Down 26.3 215.7 Low 07:58:17 - 08:20:50 6686
Sisters 08:09:34 -24.2 Dark Down 27.2 215.4 Low 07:58:18 - 08:20:51 6634
Bend 08:09:33 -24.4 Dark Down 27.3 215.8 Low 07:58:17 - 08:20:50 6613
Oregon Observatory 08:09:33 -24.6 Dark Down 27.5 215.7 Low 07:58:17 - 08:20:50 6603
Chiloquin 08:09:33 -25.9 Dark Down 28.8 215.7 Low 07:58:16 - 08:20:49 6516
Klamath Falls 08:09:32 -26.2 Dark Down 29.0 215.9 Low 07:58:16 - 08:20:49 6490
Cedarville 08:09:26 -26.9 Dark Down 28.8 217.7 Low 07:58:09 - 08:20:42 6408
Fall River/Burney 08:09:29 -27.4 Dark Down 29.8 216.6 Low 07:58:13 - 08:20:46 6395
Greenville 08:09:26 -28.3 Dark Down 30.3 217.4 Up 07:58:10 - 08:20:43 6319
Gimple 08:09:26 -28.3 Dark Down 30.3 217.5 Up 07:58:09 - 08:20:42 6317
Quincy 08:09:25 -28.5 Dark Down 30.5 217.5 Up 07:58:09 - 08:20:42 6303
Portola 08:09:24 -28.6 Dark Down 30.3 218.0 Up 07:58:07 - 08:20:40 6284
Reno 08:09:22 -28.9 Dark Down 30.2 218.7 Up 07:58:06 - 08:20:39 6251
Carson City 08:09:22 -29.3 Dark Down 30.5 218.9 Up 07:58:05 - 08:20:38 6223
Gardnerville 08:09:20 -29.5 Dark Down 30.7 219.0 Up 07:58:03 - 08:20:36 6203
Yerington 08:09:19 -29.4 Dark Down 30.4 219.5 Up 07:58:02 - 08:20:35 6195
Hawthorne 08:09:16 -29.9 Dark Down 30.5 220.2 Up 07:57:59 - 08:20:32 6147
Lee Vining 08:09:17 -30.5 Dark Down 31.1 220.0 Up 07:58:00 - 08:20:33 6113
Bishop 08:09:14 -31.1 Dark Down 31.2 220.9 Up 07:57:57 - 08:20:30 6050
Dunrhomin 08:08:37 -26.5 Dark Down 21.9 231.6 Low 07:57:21 - 08:19:54 6005
Nikitin 08:08:37 -26.7 Dark Down 22.0 231.6 Low 07:57:20 - 08:19:53 5990
CU-SBO 08:08:37 -26.8 Dark Down 22.1 231.6 Low 07:57:21 - 08:19:54 5987
Beatty 08:09:08 -31.4 Dark Down 30.7 222.6 Up 07:57:51 - 08:20:24 5978
Patrick 08:08:56 -32.7 Dark Down 30.2 225.9 Up 07:57:40 - 08:20:13 5793
Laughlin/Bullhead City 08:08:58 -33.0 Dark Down 30.8 225.4 Up 07:57:42 - 08:20:15 5788
Wildwood 08:09:11 -34.3 Dark Down 33.8 222.1 Up 07:57:55 - 08:20:28 5785
Lake Havasu City 08:08:56 -33.6 Dark Down 31.1 225.9 Up 07:57:40 - 08:20:13 5725
Idyllwild 08:09:04 -34.6 Dark Down 33.0 224.0 Up 07:57:47 - 08:20:20 5714
Calipatria 08:08:59 -35.1 Dark Down 32.8 225.4 Up 07:57:42 - 08:20:15 5635
George/Scottsdale 08:08:47 -34.1 Dark Down 30.1 228.4 Up 07:57:30 - 08:20:03 5604
Yuma 08:08:55 -35.5 Dark Down 32.5 226.4 Up 07:57:38 - 08:20:11 5578

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, (2023/07/15 08:12UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 20.34 164
35Eta Oph      17:10:22.7 -15:43:29  2.6  6.03 167
53Nu Ser       17:20:49.7 -12:50:49  4.0  2.22 165
PPM 233145     17:29:48.3 -11:08:38  7.7  0.56 164
PPM 233118     17:28:37.6 -11:30:01  9.7  0.15 164
533398         17:28:00.2 -11:29:06 15.4       164
Positions are for J2000

Event circumstances last updated at 2023/04/20 03:44:10 UT

Marc W. Buie, Southwest Research Institute

RECON