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 05:15:13 UTC

J2000 position of star is 01:01:31.4 -05:30:29
Equinox of date position of star is 01:02:43.4 -05:22:52
Stellar brightness G=14.2, use SENSEUP=64 with the MallinCam and and exposure time of 1 seconds with the QHY174 camera.
Star is 112 degrees from the moon. Moon is 35% illuminated.
Apparent brightness V=21.7

[RECON map]
Object is 43.6 AU from the Sun and 42.7 AU from the Earth.
Apparent velocity is 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 69 seconds.
The 1-sigma cross-track error in the shadow position is 1595 km.
The sky-plane scale is 30935.1 km/arcsec.

The object has an absolute magnitude Hv=5.3
Diameter=508.2 km assuming a 5% albedo -- 20.1 sec chord
Diameter=207.5 km assuming a 30% albedo -- 8.2 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 

Star training set for 469372, (2023/10/08 05:15UT)
Object            RA         Dec     mag  sep  mel
Fomalhaut      22:58:57.5 -29:29:44  1.2 37.87 146
Diphda         00:44:46.8 -17:51:24  2.0 13.22 120
25 Cet         01:04:14.7 -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  0.23 112
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 5.0 sigma about the mid-time.
The median site spacing is 16.3 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 05:15:20 -34.9 Dark Down 24.0 135.2 Low 05:09:04 - 05:21:37 4204
Victoria 05:15:33 -34.7 Dark Down 24.1 131.6 Low 05:09:16 - 05:21:49 4185
Peachland 05:15:21 -35.8 Dark Down 24.9 135.5 Low 05:09:05 - 05:21:38 4160
Kelowna 05:15:21 -35.8 Dark Down 25.0 135.8 Low 05:09:04 - 05:21:37 4158
Summerland 05:15:22 -35.9 Dark Down 25.1 135.5 Low 05:09:05 - 05:21:38 4153
Penticton 05:15:22 -36.0 Dark Down 25.2 135.6 Low 05:09:05 - 05:21:38 4148
Oliver 05:15:23 -36.2 Dark Down 25.4 135.5 Low 05:09:06 - 05:21:39 4136
Anarchist Mountain Observatory 05:15:23 -36.5 Dark Down 25.6 135.6 Low 05:09:06 - 05:21:39 4126
Okanogan 05:15:26 -36.8 Dark Down 26.0 135.2 Low 05:09:09 - 05:21:42 4105
Brewster 05:15:26 -36.9 Dark Down 26.1 134.9 Low 05:09:10 - 05:21:43 4099
Manson/Chelan 05:15:28 -36.8 Dark Down 26.1 134.5 Low 05:09:11 - 05:21:44 4098
Wenatchee 05:15:30 -37.0 Dark Down 26.3 134.2 Low 05:09:13 - 05:21:46 4083
Ellensburg 05:15:31 -37.2 Dark Down 26.5 133.8 Low 05:09:15 - 05:21:48 4071
Yakima 05:15:33 -37.4 Dark Down 26.8 133.6 Low 05:09:16 - 05:21:49 4055
Toppenish/White Swan 05:15:33 -37.6 Dark Down 27.0 133.7 Low 05:09:16 - 05:21:49 4042
The Dalles 05:15:37 -37.7 Dark Down 27.2 132.7 Low 05:09:20 - 05:21:53 4026
Maupin 05:15:37 -38.0 Dark Down 27.5 132.6 Low 05:09:21 - 05:21:54 4006
PNWRO 05:15:31 -38.7 Dark Down 28.0 135.0 Low 05:09:14 - 05:21:47 3995
Sisters 05:15:42 -38.3 Dark Down 27.8 131.8 Low 05:09:25 - 05:21:58 3978
Bend 05:15:42 -38.6 Dark Down 28.1 132.0 Low 05:09:25 - 05:21:58 3962
Oregon Observatory 05:15:42 -38.6 Dark Down 28.2 131.8 Low 05:09:26 - 05:21:59 3957
Sleaford 05:14:46 -39.6 Dark Down 28.3 150.3 Low 05:08:30 - 05:21:03 3946
Chiloquin 05:15:47 -39.1 Dark Down 28.8 130.9 Low 05:09:31 - 05:22:04 3904
Klamath Falls 05:15:48 -39.4 Dark Down 29.1 130.8 Low 05:09:32 - 05:22:05 3886
Fall River/Burney 05:15:51 -40.3 Dark Down 30.1 130.7 Up 05:09:35 - 05:22:08 3820
Cedarville 05:15:47 -40.7 Dark Down 30.5 132.0 Up 05:09:30 - 05:22:03 3817
Greenville 05:15:53 -41.1 Dark Down 31.0 130.7 Up 05:09:36 - 05:22:09 3763
Gimple 05:15:53 -41.1 Dark Down 31.0 130.8 Up 05:09:36 - 05:22:09 3761
Quincy 05:15:53 -41.2 Dark Down 31.1 130.6 Up 05:09:37 - 05:22:10 3753
Portola 05:15:53 -41.6 Dark Down 31.5 131.0 Up 05:09:36 - 05:22:09 3736
Reno 05:15:52 -42.1 Dark Down 32.0 131.5 Up 05:09:35 - 05:22:08 3706
Carson City 05:15:53 -42.3 Dark Down 32.3 131.4 Up 05:09:36 - 05:22:09 3687
Gardnerville 05:15:53 -42.5 Dark Down 32.4 131.3 Up 05:09:37 - 05:22:10 3672
Yerington 05:15:52 -42.8 Dark Down 32.7 131.9 Up 05:09:35 - 05:22:08 3661
Hawthorne 05:15:52 -43.5 Dark Down 33.4 132.2 Up 05:09:35 - 05:22:08 3623
Lee Vining 05:15:55 -43.5 Dark Down 33.5 131.4 Up 05:09:38 - 05:22:11 3604
Bishop 05:15:55 -44.3 Dark Down 34.3 131.8 Up 05:09:38 - 05:22:11 3552
Beatty 05:15:52 -45.6 Dark Down 35.6 133.2 Up 05:09:35 - 05:22:08 3483
Wildwood 05:16:04 -46.0 Dark Down 36.3 129.9 Up 05:09:48 - 05:22:21 3361
Dunrhomin 05:15:12 -49.7 Dark Down 38.7 147.2 Up 05:08:56 - 05:21:29 3355
Nikitin 05:15:13 -49.8 Dark Down 38.9 147.1 Up 05:08:57 - 05:21:30 3345
CU-SBO 05:15:13 -49.8 Dark Down 38.9 146.9 Up 05:08:57 - 05:21:30 3344
Laughlin/Bullhead City 05:15:51 -48.1 Dark Down 38.0 134.4 Up 05:09:34 - 05:22:07 3320
Patrick 05:15:48 -48.4 Dark Down 38.3 135.3 Up 05:09:32 - 05:22:05 3316
Idyllwild 05:16:00 -47.5 Dark Down 37.7 131.5 Up 05:09:44 - 05:22:17 3290
Lake Havasu City 05:15:52 -48.6 Dark Down 38.7 134.3 Up 05:09:35 - 05:22:08 3271
Calipatria 05:15:59 -48.6 Dark Down 38.9 132.3 Up 05:09:42 - 05:22:15 3217
Yuma 05:15:57 -49.5 Dark Down 39.7 133.0 Up 05:09:41 - 05:22:14 3164
George/Scottsdale 05:15:47 -50.7 Dark Down 40.6 136.4 Up 05:09:30 - 05:22:03 3151

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 05:15UT)
Object            RA         Dec     mag  sep  mel
Fomalhaut      22:57:39.6 -29:37:24  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  0.23 112
469372         01:01:31.4 -05:30:29 14.2       111
Positions are for J2000

Event circumstances last updated at 2023/09/03 03:00:53 UT

Marc W. Buie, Southwest Research Institute

RECON