RECON: TNO occultation with 523764

Event between (523764) 14WC510 and star GA0900:03031976 with event index number of 2613823

Geocentric closest approach at 2028/11/27 07:54:16 UTC

J2000 position of star is 07:45:46.9 +01:21:48
Equinox of date position of star is 07:47:01.9 +01:18:11
Stellar brightness G=16.1, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 107 degrees from the moon. Moon is 79% illuminated.
Apparent brightness V=22.0

[RECON map]
Object is 29.6 AU from the Sun and 29.0 AU from the Earth.
Apparent velocity is 14.4 km/sec on the sky relative to the star, or, 2.5 arcsec/hr.
The 1-sigma error in the time of the event is 310 seconds.
The 1-sigma cross-track error in the shadow position is 1667 km.
The sky-plane scale is 21053.1 km/arcsec.

The object has an absolute magnitude Hv=7.2
Diameter=212.8 km assuming a 5% albedo -- 14.8 sec chord
Diameter=86.9 km assuming a 30% albedo -- 6.1 sec chord
Dynamical classification is 3:2E+6:4II
 
 
 
 
 
 

Star training set for 523764, (2028/11/27 08:03UT)
Object            RA         Dec     mag  sep  mel
Sirius         06:46:25.5 -16:45:20 -1.5 23.47  95
Alhena         06:39:22.9 +16:22:20  1.9 22.52  88
13Zet CMi      07:53:11.9 +01:41:28  5.1  1.53 109
PPM 153304     07:48:39.3 +00:50:44  8.5  0.56 108
PPM 153274     07:47:33.2 +01:22:18  9.1  0.11 107
523764         07:47:16.6 +01:17:29 16.1       108
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 2.9 sigma about the mid-time.
The median site spacing is 16.8 km RECON observability=1.0 and success probability=8.5%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kamloops 07:55:46 -60.5 Dark Up 24.6 121.2 Low 07:40:46 - 08:10:46 3356
Victoria 07:56:07 -62.7 Dark Up 24.0 117.6 Low 07:41:07 - 08:11:07 3308
Peachland 07:55:49 -61.4 Dark Up 25.4 121.4 Low 07:40:49 - 08:10:49 3305
Kelowna 07:55:47 -61.3 Dark Up 25.5 121.7 Low 07:40:47 - 08:10:47 3305
Summerland 07:55:50 -61.6 Dark Up 25.5 121.4 Low 07:40:50 - 08:10:50 3296
Penticton 07:55:50 -61.6 Dark Up 25.6 121.5 Low 07:40:50 - 08:10:50 3291
Oliver 07:55:53 -62.0 Dark Up 25.8 121.3 Low 07:40:53 - 08:10:53 3275
Anarchist Mountain Observatory 07:55:52 -62.1 Dark Up 26.0 121.4 Low 07:40:52 - 08:10:52 3264
Okanogan 07:55:56 -62.8 Dark Up 26.2 121.0 Low 07:40:56 - 08:10:56 3236
Brewster 07:55:59 -63.1 Dark Up 26.3 120.7 Low 07:40:59 - 08:10:59 3227
Manson/Chelan 07:56:01 -63.3 Dark Up 26.2 120.3 Low 07:41:01 - 08:11:01 3223
Wenatchee 07:56:06 -63.8 Dark Up 26.3 119.9 Low 07:41:06 - 08:11:06 3202
Ellensburg 07:56:09 -64.2 Dark Up 26.4 119.6 Low 07:41:09 - 08:11:09 3186
Yakima 07:56:10 -64.6 Dark Up 26.6 119.4 Low 07:41:10 - 08:11:10 3165
Sleaford 07:54:51 -56.8 Dark Up 30.7 135.8 Up 07:39:51 - 08:09:51 3160
Toppenish/White Swan 07:56:11 -64.8 Dark Up 26.8 119.4 Low 07:41:11 - 08:11:11 3151
The Dalles 07:56:18 -65.6 Dark Up 26.7 118.4 Low 07:41:18 - 08:11:18 3125
PNWRO 07:56:09 -65.1 Dark Up 27.9 120.6 Low 07:41:09 - 08:11:09 3105
Maupin 07:56:21 -66.0 Dark Up 27.0 118.3 Low 07:41:21 - 08:11:21 3101
Sisters 07:56:27 -66.9 Dark Up 27.1 117.5 Low 07:41:27 - 08:11:27 3063
Bend 07:56:28 -67.2 Dark Up 27.4 117.6 Low 07:41:28 - 08:11:28 3045
Oregon Observatory 07:56:30 -67.3 Dark Up 27.4 117.5 Low 07:41:30 - 08:11:30 3038
Chiloquin 07:56:39 -68.7 Dark Up 27.7 116.5 Low 07:41:39 - 08:11:39 2972
Klamath Falls 07:56:40 -69.0 Dark Up 28.0 116.4 Low 07:41:40 - 08:11:40 2951
Cedarville 07:56:39 -69.6 Dark Up 29.3 117.5 Low 07:41:39 - 08:11:39 2879
Fall River/Burney 07:56:45 -70.2 Dark Up 28.7 116.2 Low 07:41:45 - 08:11:45 2874
Greenville 07:56:49 -71.1 Dark Up 29.5 116.1 Low 07:41:49 - 08:11:49 2810
Gimple 07:56:49 -71.1 Dark Up 29.5 116.2 Low 07:41:49 - 08:11:49 2809
Quincy 07:56:51 -71.3 Dark Up 29.6 116.0 Low 07:41:51 - 08:11:51 2798
Portola 07:56:50 -71.4 Dark Up 29.9 116.4 Low 07:41:50 - 08:11:50 2781
Reno 07:56:49 -71.6 Dark Up 30.5 116.8 Up 07:41:49 - 08:11:49 2752
Carson City 07:56:51 -71.9 Dark Up 30.7 116.6 Up 07:41:51 - 08:11:51 2728
Gardnerville 07:56:52 -72.2 Dark Up 30.8 116.5 Up 07:41:52 - 08:11:52 2712
Yerington 07:56:50 -72.0 Dark Up 31.2 117.0 Up 07:41:50 - 08:11:50 2703
Hawthorne 07:56:50 -72.4 Dark Up 31.8 117.2 Up 07:41:50 - 08:11:50 2662
Lee Vining 07:56:55 -73.1 Dark Up 31.7 116.5 Up 07:41:55 - 08:11:55 2636
Bishop 07:56:55 -73.5 Dark Up 32.5 116.8 Up 07:41:55 - 08:11:55 2581
Beatty 07:56:52 -73.6 Dark Up 33.9 117.9 Up 07:41:52 - 08:11:52 2515
Dunrhomin 07:55:48 -66.2 Dark Up 39.3 130.7 Up 07:40:48 - 08:10:48 2468
Nikitin 07:55:49 -66.3 Dark Up 39.4 130.6 Up 07:40:49 - 08:10:49 2456
CU-SBO 07:55:49 -66.4 Dark Up 39.4 130.5 Up 07:40:49 - 08:10:49 2454
Wildwood 07:57:14 -76.7 Dark Up 33.8 114.8 Up 07:42:14 - 08:12:14 2361
Patrick 07:56:47 -74.0 Dark Up 36.6 119.5 Up 07:41:47 - 08:11:47 2346
Laughlin/Bullhead City 07:56:52 -74.5 Dark Up 36.2 118.7 Up 07:41:52 - 08:11:52 2345
Idyllwild 07:57:09 -76.5 Dark Up 35.4 116.1 Up 07:42:09 - 08:12:09 2293
Lake Havasu City 07:56:55 -75.0 Dark Up 36.8 118.5 Up 07:41:55 - 08:11:55 2291
Calipatria 07:57:07 -76.7 Dark Up 36.5 116.6 Up 07:42:07 - 08:12:07 2220
George/Scottsdale 07:56:47 -74.5 Dark Up 38.9 120.1 Up 07:41:47 - 08:11:47 2176
Yuma 07:57:04 -76.7 Dark Up 37.4 117.1 Up 07:42:04 - 08:12:04 2168

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 523764, (2028/11/27 08:03UT)
Object            RA         Dec     mag  sep  mel
Sirius         06:45:08.0 -16:43:25 -1.5 23.47  95
Alhena         06:37:42.8 +16:23:56  1.9 22.52  88
13Zet CMi      07:51:42.0 +01:46:01  5.1  1.53 109
PPM 153304     07:47:09.9 +00:55:07  8.5  0.56 108
PPM 153274     07:46:03.5 +01:26:39  9.1  0.11 107
523764         07:45:46.9 +01:21:48 16.1       107
Positions are for J2000

Event circumstances last updated at 2024/03/08 02:59:39 UT

Marc W. Buie, Southwest Research Institute

RECON