RECON: TNO occultation with 523719

Event between (523719) 14LM28 and star GA1380:04907687 with event index number of 2292443

Geocentric closest approach at 2023/02/09 10:19:19 UTC

J2000 position of star is 18:04:01.5 +48:12:26
Equinox of date position of star is 18:04:37.9 +48:12:34
Stellar brightness G=14.9, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 88 degrees from the moon. Moon is 88% illuminated.
Apparent brightness V=22.9

[RECON map]
Object is 18.5 AU from the Sun and 18.6 AU from the Earth.
Apparent velocity is 38.2 km/sec on the sky relative to the star, or, 10.2 arcsec/hr.
The 1-sigma error in the time of the event is 80 seconds.
The 1-sigma cross-track error in the shadow position is 2688 km.
The sky-plane scale is 13524.9 km/arcsec.

The object has an absolute magnitude Hv=9.9
Diameter=63.1 km assuming a 5% albedo -- 1.6 sec chord
Diameter=25.8 km assuming a 30% albedo -- 0.7 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 523719, (2023/02/09 10:19UT)
Object            RA         Dec     mag  sep  mel
Vega           18:37:43.3 +38:48:22  0.0 11.14  94
Etamin         17:57:08.6 +51:29:13  2.2  3.49  86
PPM 056752     18:03:45.2 +48:27:59  6.1  0.30  87
PPM 056751     18:03:44.5 +48:16:52 10.0  0.17  87
523719         18:04:38.0 +48:12:34 14.9        88
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 6.4 km RECON observability=1.0 and success probability=3.0%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Wildwood 10:18:51 -54.8 Dark Up 21.3 45.4 Low 10:11:40 - 10:26:01 6355
Quincy 10:19:07 -53.4 Dark Up 24.1 46.3 Low 10:11:57 - 10:26:18 6316
Greenville 10:19:07 -53.3 Dark Up 24.2 46.4 Low 10:11:57 - 10:26:18 6311
Gimple 10:19:08 -53.3 Dark Up 24.3 46.4 Low 10:11:57 - 10:26:18 6309
Lee Vining 10:19:00 -53.3 Dark Up 23.7 46.4 Low 10:11:50 - 10:26:11 6306
Portola 10:19:06 -53.2 Dark Up 24.3 46.5 Low 10:11:55 - 10:26:16 6305
Gardnerville 10:19:03 -53.2 Dark Up 24.1 46.5 Low 10:11:52 - 10:26:13 6304
Carson City 10:19:04 -53.1 Dark Up 24.2 46.5 Low 10:11:54 - 10:26:15 6300
Fall River/Burney 10:19:10 -53.1 Dark Up 24.6 46.5 Low 10:12:00 - 10:26:21 6300
Bishop 10:18:58 -53.1 Dark Up 23.7 46.5 Low 10:11:47 - 10:26:08 6294
Idyllwild 10:18:48 -53.5 Dark Up 22.2 45.9 Low 10:11:37 - 10:25:58 6293
Reno 10:19:05 -52.9 Dark Up 24.4 46.6 Low 10:11:54 - 10:26:15 6292
Yerington 10:19:03 -52.8 Dark Up 24.4 46.7 Low 10:11:52 - 10:26:13 6284
Hawthorne 10:19:01 -52.7 Dark Up 24.4 46.7 Low 10:11:50 - 10:26:11 6278
Klamath Falls 10:19:12 -52.6 Dark Up 25.2 46.7 Low 10:12:02 - 10:26:23 6277
Chiloquin 10:19:14 -52.4 Dark Up 25.4 46.8 Low 10:12:04 - 10:26:25 6269
Calipatria 10:18:44 -52.8 Dark Up 22.5 46.1 Low 10:11:34 - 10:25:55 6253
Cedarville 10:19:10 -52.0 Dark Up 25.6 47.2 Low 10:11:59 - 10:26:20 6252
Beatty 10:18:55 -52.2 Dark Up 24.4 46.9 Low 10:11:44 - 10:26:05 6245
Yuma 10:18:42 -52.3 Dark Up 22.7 46.2 Low 10:11:32 - 10:25:53 6222
Oregon Observatory 10:19:16 -51.3 Dark Up 26.5 47.5 Low 10:12:06 - 10:26:27 6217
Bend 10:19:17 -51.1 Dark Up 26.7 47.6 Low 10:12:06 - 10:26:27 6207
Sisters 10:19:18 -51.1 Dark Up 26.8 47.6 Low 10:12:07 - 10:26:28 6206
Laughlin/Bullhead City 10:18:48 -51.3 Dark Up 24.5 47.0 Low 10:11:37 - 10:25:58 6190
Lake Havasu City 10:18:46 -51.4 Dark Up 24.1 46.9 Low 10:11:36 - 10:25:57 6189
Maupin 10:19:18 -50.3 Dark Up 27.6 48.1 Low 10:12:07 - 10:26:28 6163
Patrick 10:18:47 -50.7 Dark Up 25.0 47.3 Low 10:11:36 - 10:25:57 6159
The Dalles 10:19:20 -50.1 Dark Up 27.8 48.3 Low 10:12:09 - 10:26:30 6151
Toppenish/White Swan 10:19:20 -49.1 Dark Up 28.8 48.9 Low 10:12:10 - 10:26:31 6102
Yakima 10:19:21 -49.1 Dark Up 28.8 49.0 Low 10:12:10 - 10:26:31 6099
George/Scottsdale 10:18:41 -49.8 Dark Up 25.1 47.4 Low 10:11:30 - 10:25:51 6095
Victoria 10:19:29 -49.1 Dark Up 28.7 48.4 Low 10:12:18 - 10:26:39 6094
Ellensburg 10:19:22 -48.8 Dark Up 29.1 49.1 Low 10:12:12 - 10:26:33 6083
PNWRO 10:19:18 -48.6 Dark Up 29.3 49.5 Low 10:12:07 - 10:26:28 6073
Wenatchee 10:19:22 -48.4 Dark Up 29.5 49.4 Low 10:12:12 - 10:26:33 6062
Manson/Chelan 10:19:24 -48.0 Dark Up 29.9 49.7 Low 10:12:13 - 10:26:34 6039
Brewster 10:19:23 -47.7 Dark Up 30.2 50.0 Up 10:12:12 - 10:26:33 6021
Okanogan 10:19:24 -47.4 Dark Up 30.5 50.2 Up 10:12:13 - 10:26:34 6005
Anarchist Mountain Observatory 10:19:24 -46.9 Dark Up 31.0 50.6 Up 10:12:13 - 10:26:34 5974
Oliver 10:19:26 -46.8 Dark Up 31.0 50.6 Up 10:12:15 - 10:26:36 5972
Summerland 10:19:26 -46.6 Dark Up 31.2 50.7 Up 10:12:16 - 10:26:37 5958
Penticton 10:19:26 -46.6 Dark Up 31.2 50.8 Up 10:12:16 - 10:26:37 5958
Peachland 10:19:27 -46.6 Dark Up 31.3 50.8 Up 10:12:17 - 10:26:38 5954
Kelowna 10:19:27 -46.3 Dark Up 31.5 51.0 Up 10:12:16 - 10:26:37 5941
Kamloops 10:19:30 -46.2 Dark Up 31.6 50.9 Up 10:12:19 - 10:26:40 5930
CU-SBO 10:18:47 -42.7 Dark Up 33.2 52.1 Up 10:11:37 - 10:25:58 5708
Nikitin 10:18:47 -42.7 Dark Up 33.3 52.2 Up 10:11:37 - 10:25:58 5703
Dunrhomin 10:18:48 -42.6 Dark Up 33.4 52.3 Up 10:11:37 - 10:25:58 5699
Sleaford 10:19:18 -38.1 Dark Up 39.7 59.3 Up 10:12:07 - 10:26:28 5417

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 523719, (2023/02/09 10:19UT)
Object            RA         Dec     mag  sep  mel
Vega           18:36:56.7 +38:47:07  0.0 11.14  94
Etamin         17:56:36.3 +51:29:20  2.2  3.49  86
PPM 056752     18:03:09.0 +48:27:52  6.1  0.30  87
PPM 056751     18:03:08.0 +48:16:45 10.0  0.17  87
523719         18:04:01.5 +48:12:26 14.9        88
Positions are for J2000

Event circumstances last updated at 2023/01/09 03:29:10 UT

Marc W. Buie, Southwest Research Institute

RECON