RECON: TNO occultation with 469372

Event between (469372) 01QF298 and star GA0840:00084704 with event index number of 1342636

Geocentric closest approach at 2023/10/08 05:03:52 UTC

J2000 position of star is 01:01:31.4 -05:30:29
Equinox of date position of star is 01:02:30.3 -05:24:15
Stellar brightness G=14.2, use SENSEUP=64
Star is 111 degrees from the moon. Moon is 35% illuminated.
TNO apparent brightness V=21.5

[RECON map]
TNO is 43.6 AU from the Sun and 42.7 AU from the Earth.
The TNO is moving 25.8 km/sec on the sky relative to the star, or, 3.0 arcsec/hr.
The 1-sigma error in the time of the event is 288 seconds.
The 1-sigma cross-track error in the shadow position is 3053 km.
The sky-plane scale is 30935.0 km/arcsec.

The TNO has an absolute magnitude Hv=5.1
Diameter=575.5 km assuming a 5% albedo -- 22.3 sec chord
Diameter=234.9 km assuming a 30% albedo -- 9.1 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 

Star training set for 469372, (2023/10/08 05:04UT)
Object            RA         Dec     mag  sep  mel
Fomalhaut      22:58:57.4 -29:29:44  1.2 37.87 146
Diphda         00:44:46.8 -17:51:24  2.0 13.22 120
25 Cet         01:04:14.8 -04:42:36  5.3  0.77 111
PPM 182889     00:59:58.0 -05:45:19  6.6  0.78 112
PPM 182929     01:02:12.6 -05:11:27  9.8  0.23 111
469372         01:02:43.7 -05:22:50 14.2       111
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 3.1 sigma about the mid-time.
The median site spacing is 9.6 km RECON observability=1.0 and success probability=8.8%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kelowna 05:04:05 -34.5 Dark Down 23.7 133.1 Low 04:49:05 - 05:19:05 1148
Summerland 05:04:06 -34.5 Dark Down 23.8 132.8 Low 04:49:06 - 05:19:06 1143
Penticton 05:04:06 -34.6 Dark Down 23.9 132.9 Low 04:49:06 - 05:19:06 1138
Okanagan Falls 05:04:07 -34.7 Dark Down 24.0 132.8 Low 04:49:07 - 05:19:07 1132
Oliver 05:04:07 -34.8 Dark Down 24.1 132.8 Low 04:49:07 - 05:19:07 1126
Anarchist Mountain Observatory 05:04:07 -35.0 Dark Down 24.3 132.9 Low 04:49:07 - 05:19:07 1116
Oroville 05:04:08 -35.0 Dark Down 24.3 132.8 Low 04:49:08 - 05:19:08 1114
Tonasket 05:04:09 -35.2 Dark Down 24.5 132.7 Low 04:49:09 - 05:19:09 1106
Okanogan 05:04:10 -35.3 Dark Down 24.6 132.5 Low 04:49:10 - 05:19:10 1096
Brewster 05:04:11 -35.4 Dark Down 24.7 132.2 Low 04:49:11 - 05:19:11 1090
Manson/Chelan 05:04:12 -35.3 Dark Down 24.7 131.8 Low 04:49:12 - 05:19:12 1089
Entiat 05:04:13 -35.4 Dark Down 24.8 131.6 Low 04:49:13 - 05:19:13 1082
Wenatchee 05:04:14 -35.5 Dark Down 24.9 131.5 Low 04:49:14 - 05:19:14 1074
Ellensburg 05:04:16 -35.6 Dark Down 25.1 131.1 Low 04:49:16 - 05:19:16 1062
Yakima 05:04:17 -35.9 Dark Down 25.4 130.9 Low 04:49:17 - 05:19:17 1046
Toppenish/White Swan 05:04:18 -36.1 Dark Down 25.6 131.0 Low 04:49:18 - 05:19:18 1034
Goldendale 05:04:20 -36.2 Dark Down 25.7 130.4 Low 04:49:20 - 05:19:20 1020
The Dalles 05:04:22 -36.1 Dark Down 25.7 130.0 Low 04:49:22 - 05:19:22 1018
Pasco 05:04:15 -36.9 Dark Down 26.3 132.2 Low 04:49:15 - 05:19:15 1004
Maupin 05:04:23 -36.4 Dark Down 26.0 130.0 Low 04:49:23 - 05:19:23 998
George/Umatilla 05:04:17 -36.9 Dark Down 26.4 131.9 Low 04:49:17 - 05:19:17 995
PNWRO 05:04:16 -37.1 Dark Down 26.6 132.3 Low 04:49:16 - 05:19:16 989
Madras/Culver 05:04:25 -36.7 Dark Down 26.3 129.7 Low 04:49:25 - 05:19:25 975
Sisters 05:04:26 -36.6 Dark Down 26.3 129.2 Low 04:49:26 - 05:19:26 970
Redmond 05:04:26 -36.9 Dark Down 26.5 129.6 Low 04:49:26 - 05:19:26 961
Bend 05:04:27 -36.9 Dark Down 26.6 129.3 Low 04:49:27 - 05:19:27 954
Oregon Observatory 05:04:28 -36.9 Dark Down 26.6 129.2 Low 04:49:28 - 05:19:28 949
La Pine/Gilchrist 05:04:28 -37.0 Dark Down 26.7 129.0 Low 04:49:28 - 05:19:28 941
North Lake 05:04:29 -37.6 Dark Down 27.4 129.4 Low 04:49:29 - 05:19:29 909
Chiloquin 05:04:32 -37.4 Dark Down 27.2 128.3 Low 04:49:32 - 05:19:32 897
Klamath Falls 05:04:33 -37.6 Dark Down 27.5 128.2 Low 04:49:33 - 05:19:33 880
Paisley 05:04:29 -38.1 Dark Down 27.9 129.5 Low 04:49:29 - 05:19:29 877
Tulelake 05:04:34 -37.9 Dark Down 27.8 128.4 Low 04:49:34 - 05:19:34 861
Lakeview 05:04:31 -38.5 Dark Down 28.3 129.5 Low 04:49:31 - 05:19:31 849
Fall River/Burney 05:04:36 -38.5 Dark Down 28.5 128.1 Low 04:49:36 - 05:19:36 815
Cedarville 05:04:32 -39.0 Dark Down 28.9 129.4 Low 04:49:32 - 05:19:32 813
Susanville 05:04:36 -39.3 Dark Down 29.3 128.5 Low 04:49:36 - 05:19:36 768
Greenville 05:04:38 -39.2 Dark Down 29.3 128.1 Low 04:49:38 - 05:19:38 760
Gimple 05:04:38 -39.3 Dark Down 29.3 128.2 Low 04:49:38 - 05:19:38 758
Quincy 05:04:39 -39.4 Dark Down 29.4 128.0 Low 04:49:39 - 05:19:39 750
Portola 05:04:38 -39.7 Dark Down 29.8 128.4 Low 04:49:38 - 05:19:38 733
Reno 05:04:37 -40.3 Dark Down 30.3 128.9 Up 04:49:37 - 05:19:37 705
Carson City 05:04:38 -40.5 Dark Down 30.6 128.7 Up 04:49:38 - 05:19:38 686
Gardnerville 05:04:39 -40.7 Dark Down 30.8 128.7 Up 04:49:39 - 05:19:39 672
Yerington 05:04:37 -41.0 Dark Down 31.1 129.2 Up 04:49:37 - 05:19:37 661
Hawthorne 05:04:37 -41.6 Dark Down 31.7 129.5 Up 04:49:37 - 05:19:37 624
Lee Vining 05:04:40 -41.6 Dark Down 31.8 128.8 Up 04:49:40 - 05:19:40 605
Tonopah 05:04:35 -42.8 Dark Down 32.8 130.6 Up 04:49:35 - 05:19:35 566
Bishop 05:04:40 -42.4 Dark Down 32.6 129.2 Up 04:49:40 - 05:19:40 555
Lone Pine 05:04:42 -43.0 Dark Down 33.3 129.1 Up 04:49:42 - 05:19:42 503
Beatty 05:04:38 -43.7 Dark Down 33.9 130.4 Up 04:49:38 - 05:19:38 489
CPSLO 05:04:52 -41.9 Dark Down 32.4 126.1 Up 04:49:52 - 05:19:52 489
Indian Springs 05:04:36 -44.6 Dark Down 34.7 131.3 Up 04:49:36 - 05:19:36 444
Henderson 05:04:36 -45.4 Dark Down 35.5 131.7 Up 04:49:36 - 05:19:36 395
Wildwood 05:04:50 -43.9 Dark Down 34.5 127.3 Up 04:49:50 - 05:19:50 367
Niwot 05:03:59 -48.4 Dark Down 37.6 143.9 Up 04:48:59 - 05:18:59 364
SwRI 05:04:00 -48.5 Dark Down 37.7 143.7 Up 04:49:00 - 05:19:00 361
Searchlight/Boulder City 05:04:37 -45.8 Dark Down 35.9 131.5 Up 04:49:37 - 05:19:37 359
Laughlin/Bullhead City 05:04:37 -46.2 Dark Down 36.3 131.6 Up 04:49:37 - 05:19:37 332
Patrick 05:04:34 -46.5 Dark Down 36.6 132.4 Up 04:49:34 - 05:19:34 328
Kingman/Dolan Springs 05:04:36 -46.5 Dark Down 36.6 132.1 Up 04:49:36 - 05:19:36 319
Mohave Valley 05:04:38 -46.3 Dark Down 36.5 131.5 Up 04:49:38 - 05:19:38 315
Idyllwild 05:04:46 -45.5 Dark Down 36.0 128.8 Up 04:49:46 - 05:19:46 298
DCO 05:04:33 -47.2 Dark Down 37.2 133.0 Up 04:49:33 - 05:19:33 290
Lake Havasu City 05:04:38 -46.7 Dark Down 37.0 131.5 Up 04:49:38 - 05:19:38 284
Parker 05:04:39 -46.9 Dark Down 37.2 131.3 Up 04:49:39 - 05:19:39 261
Blythe 05:04:41 -47.0 Dark Down 37.4 130.8 Up 04:49:41 - 05:19:41 236
Calipatria 05:04:45 -46.6 Dark Down 37.1 129.6 Up 04:49:45 - 05:19:45 229
Yuma 05:04:44 -47.5 Dark Down 38.0 130.2 Up 04:49:44 - 05:19:44 178

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 469372, (2023/10/08 05:04UT)
Object            RA         Dec     mag  sep  mel
Fomalhaut      22:57:39.5 -29:37:23  1.2 37.87 146
Diphda         00:43:35.7 -17:59:11  2.0 13.22 120
25 Cet         01:03:02.4 -04:50:14  5.3  0.77 111
PPM 182889     00:58:45.8 -05:53:00  6.6  0.78 112
PPM 182929     01:01:00.3 -05:19:06  9.8  0.23 111
469372         01:01:31.4 -05:30:29 14.2       111
Positions are for J2000

Event circumstances last updated at 2019/05/13 23:04:06 UT

Marc W. Buie, Southwest Research Institute

RECON