RECON: TNO occultation with 535167

Event between (535167) 14XT40 and star GA1080:00592500 with event index number of 2260217

Geocentric closest approach at 2023/11/10 04:55:36 UTC

J2000 position of star is 04:32:31.0 +18:41:53
Equinox of date position of star is 04:33:54.4 +18:44:50
Stellar brightness G=10.8, use SENSEUP=4 with the MallinCam and and exposure time of 125 milli-seconds with the QHY174 camera.
Star is 121 degrees from the moon. Moon is 10% illuminated.
Apparent brightness V=22.4

[RECON map]
Object is 32.6 AU from the Sun and 31.7 AU from the Earth.
Apparent velocity is 22.5 km/sec on the sky relative to the star, or, 3.5 arcsec/hr.
The 1-sigma error in the time of the event is 79 seconds.
The 1-sigma cross-track error in the shadow position is 1176 km.
The sky-plane scale is 23001.6 km/arcsec.

The object has an absolute magnitude Hv=7.2
Diameter=209.9 km assuming a 5% albedo -- 9.6 sec chord
Diameter=85.7 km assuming a 30% albedo -- 3.9 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 

Star training set for 535167, (2023/11/10 04:43UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:17.5 +16:33:19  0.8  2.34 121
3Iot Aur       04:58:33.1 +33:12:06  2.7 15.47 113
PPM 120015     04:34:56.0 +18:03:55  6.3  0.72 121
PPM 120041     04:36:16.0 +18:27:40  8.3  0.63 121
PPM 120027     04:35:34.6 +18:46:06 11.0  0.40 121
535167         04:33:54.4 +18:44:50 10.8       121
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 24.3 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 04:57:41 -42.7 Dark Down 30.1 97.1 Up 04:50:36 - 05:04:46 3645
Victoria 04:57:53 -41.9 Dark Down 28.4 93.5 Low 04:50:48 - 05:04:58 3592
Peachland 04:57:44 -43.5 Dark Down 30.6 97.1 Up 04:50:39 - 05:04:49 3572
Kelowna 04:57:43 -43.6 Dark Down 30.8 97.4 Up 04:50:38 - 05:04:48 3570
Summerland 04:57:44 -43.6 Dark Down 30.7 97.0 Up 04:50:39 - 05:04:49 3560
Penticton 04:57:45 -43.7 Dark Down 30.8 97.1 Up 04:50:40 - 05:04:50 3552
Oliver 04:57:46 -43.9 Dark Down 30.8 96.9 Up 04:50:41 - 05:04:51 3530
Anarchist Mountain Observatory 04:57:47 -44.1 Dark Down 31.0 97.0 Up 04:50:42 - 05:04:52 3514
Okanogan 04:57:49 -44.3 Dark Down 30.9 96.4 Up 04:50:44 - 05:04:54 3478
Brewster 04:57:51 -44.3 Dark Down 30.8 96.1 Up 04:50:46 - 05:04:56 3466
Manson/Chelan 04:57:52 -44.2 Dark Down 30.6 95.7 Up 04:50:47 - 05:04:57 3462
Wenatchee 04:57:54 -44.3 Dark Down 30.5 95.3 Up 04:50:49 - 05:04:59 3435
Ellensburg 04:57:56 -44.3 Dark Down 30.4 94.9 Up 04:50:51 - 05:05:01 3414
Yakima 04:57:58 -44.5 Dark Down 30.5 94.6 Up 04:50:53 - 05:05:03 3388
Toppenish/White Swan 04:57:58 -44.7 Dark Down 30.6 94.6 Up 04:50:53 - 05:05:03 3368
Sleaford 04:57:15 -48.8 Dark Down 38.5 110.7 Up 04:50:10 - 05:04:20 3363
The Dalles 04:58:02 -44.6 Dark Down 30.1 93.6 Up 04:50:57 - 05:05:07 3338
Maupin 04:58:04 -44.8 Dark Down 30.2 93.4 Up 04:50:59 - 05:05:09 3306
PNWRO 04:57:58 -45.8 Dark Down 31.7 95.5 Up 04:50:53 - 05:05:03 3300
Sisters 04:58:08 -44.9 Dark Down 29.9 92.6 Low 04:51:03 - 05:05:13 3260
Bend 04:58:08 -45.1 Dark Down 30.1 92.6 Up 04:51:03 - 05:05:13 3236
Oregon Observatory 04:58:09 -45.1 Dark Down 30.0 92.4 Up 04:51:04 - 05:05:14 3228
Chiloquin 04:58:14 -45.3 Dark Down 29.8 91.4 Low 04:51:09 - 05:05:19 3147
Klamath Falls 04:58:16 -45.5 Dark Down 29.9 91.3 Low 04:51:11 - 05:05:21 3119
Fall River/Burney 04:58:20 -46.2 Dark Down 30.2 90.8 Up 04:51:15 - 05:05:25 3021
Cedarville 04:58:17 -46.9 Dark Down 31.1 91.9 Up 04:51:12 - 05:05:22 3019
Greenville 04:58:23 -46.8 Dark Down 30.6 90.6 Up 04:51:18 - 05:05:28 2940
Gimple 04:58:23 -46.9 Dark Down 30.6 90.7 Up 04:51:18 - 05:05:28 2937
Quincy 04:58:23 -46.9 Dark Down 30.6 90.5 Up 04:51:18 - 05:05:28 2924
Portola 04:58:23 -47.3 Dark Down 30.9 90.7 Up 04:51:18 - 05:05:28 2900
Reno 04:58:23 -47.9 Dark Down 31.4 91.0 Up 04:51:18 - 05:05:28 2859
Carson City 04:58:24 -48.0 Dark Down 31.5 90.8 Up 04:51:19 - 05:05:29 2831
Gardnerville 04:58:25 -48.1 Dark Down 31.5 90.7 Up 04:51:20 - 05:05:30 2810
Yerington 04:58:25 -48.5 Dark Down 32.0 91.1 Up 04:51:20 - 05:05:30 2795
Hawthorne 04:58:25 -49.1 Dark Down 32.4 91.1 Up 04:51:20 - 05:05:30 2742
Lee Vining 04:58:28 -48.9 Dark Down 32.0 90.5 Up 04:51:23 - 05:05:33 2714
Bishop 04:58:29 -49.7 Dark Down 32.6 90.5 Up 04:51:24 - 05:05:34 2642
Beatty 04:58:28 -51.1 Dark Down 33.9 91.2 Up 04:51:23 - 05:05:33 2551
Dunrhomin 04:57:54 -57.3 Dark Down 42.4 101.8 Up 04:50:49 - 05:04:59 2452
Nikitin 04:57:55 -57.4 Dark Down 42.4 101.6 Up 04:50:50 - 05:05:00 2437
CU-SBO 04:57:55 -57.4 Dark Down 42.4 101.5 Up 04:50:50 - 05:05:00 2434
Wildwood 04:58:40 -50.5 Dark Down 32.4 88.4 Up 04:51:35 - 05:05:45 2382
Laughlin/Bullhead City 04:58:30 -53.3 Dark Down 35.7 91.4 Up 04:51:25 - 05:05:35 2335
Patrick 04:58:28 -53.8 Dark Down 36.3 91.9 Up 04:51:23 - 05:05:33 2332
Idyllwild 04:58:39 -52.1 Dark Down 34.0 89.2 Up 04:51:34 - 05:05:44 2288
Lake Havasu City 04:58:32 -53.8 Dark Down 35.9 91.0 Up 04:51:27 - 05:05:37 2270
Calipatria 04:58:38 -53.2 Dark Down 35.0 89.4 Up 04:51:33 - 05:05:43 2194
Yuma 04:58:38 -54.1 Dark Down 35.7 89.6 Up 04:51:33 - 05:05:43 2126
George/Scottsdale 04:58:28 -55.9 Dark Down 38.0 91.8 Up 04:51:23 - 05:05:33 2119

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 535167, (2023/11/10 04:43UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:29  0.8  2.34 121
3Iot Aur       04:56:59.6 +33:09:58  2.7 15.47 113
PPM 120015     04:33:33.0 +18:01:00  6.3  0.72 121
PPM 120041     04:34:52.7 +18:24:48  8.3  0.63 121
PPM 120027     04:34:11.2 +18:43:12 11.0  0.40 121
535167         04:32:31.0 +18:41:53 10.8       121
Positions are for J2000

Event circumstances last updated at 2023/11/06 05:15:30 UT

Marc W. Buie, Southwest Research Institute

RECON