RECON: TNO occultation with 469361

Event between (469361) 01HY65 and star GA0840:04434111 with event index number of 2251530

Geocentric closest approach at 2024/06/01 04:34:47 UTC

J2000 position of star is 14:27:53.0 -05:26:17
Equinox of date position of star is 14:29:03.1 -05:32:12
Stellar brightness G=16.1, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 144 degrees from the moon. Moon is 33% illuminated.
TNO apparent brightness V=22.6

[RECON map]
TNO is 41.3 AU from the Sun and 40.5 AU from the Earth.
The TNO is moving 19.9 km/sec on the sky relative to the star, or, 2.4 arcsec/hr.
The 1-sigma error in the time of the event is 307 seconds.
The 1-sigma cross-track error in the shadow position is 3415 km.
The sky-plane scale is 29358.4 km/arcsec.

The TNO has an absolute magnitude Hv=6.4
Diameter=311.9 km assuming a 5% albedo -- 15.7 sec chord
Diameter=127.3 km assuming a 30% albedo -- 6.4 sec chord
Dynamical classification is SCATEXTD
 
 
 
 
 
 

Star training set for 469361, (2024/06/01 04:20UT)
Object            RA         Dec     mag  sep  mel
Spica          13:26:29.0 -11:17:17  1.0 16.52 156
27Bet Lib      15:18:19.5 -09:28:17  2.6 12.80 131
99Iot Vir      14:17:17.9 -06:06:56  4.1  3.01 146
PPM 197589     14:30:05.0 -05:19:35  6.8  0.32 143
PPM 197567     14:28:32.0 -05:37:26  9.1  0.18 144
469361         14:29:10.0 -05:32:47 16.1       143
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 23.6 km RECON observability=0.3 and success probability=5.1%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Sleaford 04:36:11 -9.3 NT Down 32.4 175.7 Up 04:21:11 - 04:51:11 -2596
Kamloops 04:36:58 -4.7 CT Down 31.8 158.9 Up 04:21:58 - 04:51:58 -2955
Kelowna 04:36:54 -5.6 CT Down 32.8 159.7 Up 04:21:54 - 04:51:54 -2993
Peachland 04:36:55 -5.6 CT Down 32.8 159.3 Up 04:21:55 - 04:51:55 -3006
Summerland 04:36:55 -5.7 CT Down 33.0 159.4 Up 04:21:55 - 04:51:55 -3014
Penticton 04:36:55 -5.8 CT Down 33.0 159.5 Up 04:21:55 - 04:51:55 -3017
Oliver 04:36:55 -6.1 NT Down 33.4 159.4 Up 04:21:55 - 04:51:55 -3041
Anarchist Mountain Observatory 04:36:54 -6.3 NT Down 33.6 159.6 Up 04:21:54 - 04:51:54 -3048
Tonasket 04:36:55 -6.5 NT Down 33.9 159.5 Up 04:21:55 - 04:51:55 -3072
Okanogan 04:36:55 -6.6 NT Down 34.1 159.2 Up 04:21:55 - 04:51:55 -3098
Brewster 04:36:57 -6.7 NT Down 34.3 158.9 Up 04:21:57 - 04:51:57 -3121
Manson/Chelan 04:36:58 -6.7 NT Down 34.4 158.4 Up 04:21:58 - 04:51:58 -3144
Victoria 04:37:08 -4.7 CT Down 33.0 154.9 Up 04:22:08 - 04:52:08 -3164
Wenatchee 04:36:58 -7.0 NT Down 34.8 158.1 Up 04:21:58 - 04:51:58 -3181
Ellensburg 04:36:59 -7.1 NT Down 35.2 157.8 Up 04:21:59 - 04:51:59 -3215
Yakima 04:37:00 -7.4 NT Down 35.5 157.6 Up 04:22:00 - 04:52:00 -3245
PNWRO 04:36:54 -8.6 NT Down 36.5 159.4 Up 04:21:54 - 04:51:54 -3253
Toppenish/White Swan 04:36:59 -7.6 NT Down 35.8 157.8 Up 04:21:59 - 04:51:59 -3257
Goldendale 04:37:01 -7.8 NT Down 36.2 157.1 Up 04:22:01 - 04:52:01 -3307
The Dalles 04:37:02 -7.8 NT Down 36.3 156.6 Up 04:22:02 - 04:52:02 -3332
Maupin 04:37:02 -8.1 NT Down 36.7 156.6 Up 04:22:02 - 04:52:02 -3360
Dunrhomin 04:36:00 -19.4 Dark Down 44.2 175.9 Up 04:21:00 - 04:51:00 -3382
CU-SBO 04:36:00 -19.5 Dark Down 44.5 175.7 Up 04:21:00 - 04:51:00 -3403
Sisters 04:37:04 -8.5 NT Down 37.4 155.8 Up 04:22:04 - 04:52:04 -3437
Bend 04:37:04 -8.8 NT Down 37.7 156.0 Up 04:22:04 - 04:52:04 -3450
Oregon Observatory 04:37:04 -8.8 NT Down 37.8 155.8 Up 04:22:04 - 04:52:04 -3466
North Lake 04:37:01 -9.5 NT Down 38.5 156.2 Up 04:22:01 - 04:52:01 -3503
Lakeview 04:37:00 -10.6 NT Down 39.7 156.6 Up 04:22:00 - 04:52:00 -3573
Chiloquin 04:37:07 -9.5 NT Down 38.9 154.9 Up 04:22:07 - 04:52:07 -3577
Klamath Falls 04:37:05 -9.8 NT Down 39.2 154.8 Up 04:22:05 - 04:52:05 -3603
Cedarville 04:37:00 -11.1 NT Down 40.3 156.6 Up 04:22:00 - 04:52:00 -3621
Fall River/Burney 04:37:04 -10.8 NT Down 40.4 154.9 Up 04:22:04 - 04:52:04 -3688
Susanville 04:37:02 -11.6 NT Down 41.2 155.6 Up 04:22:02 - 04:52:02 -3722
Gimple 04:37:03 -11.7 NT Down 41.4 155.2 Up 04:22:03 - 04:52:03 -3749
Greenville 04:37:02 -11.6 NT Down 41.3 155.1 Up 04:22:02 - 04:52:02 -3751
Portola 04:37:01 -12.1 AT Down 41.8 155.6 Up 04:22:01 - 04:52:01 -3766
Quincy 04:37:02 -11.8 NT Down 41.5 155.0 Up 04:22:02 - 04:52:02 -3767
Reno 04:36:58 -12.7 AT Down 42.2 156.3 Up 04:21:58 - 04:51:58 -3773
Carson City 04:36:59 -12.9 AT Down 42.6 156.2 Up 04:21:59 - 04:51:59 -3802
Yerington 04:36:55 -13.4 AT Down 42.9 156.9 Up 04:21:55 - 04:51:55 -3803
Gardnerville 04:36:58 -13.1 AT Down 42.8 156.2 Up 04:21:58 - 04:51:58 -3821
Hawthorne 04:36:54 -14.0 AT Down 43.5 157.4 Up 04:21:54 - 04:51:54 -3828
Tonopah 04:36:49 -15.1 AT Down 44.4 159.1 Up 04:21:49 - 04:51:49 -3833
Lee Vining 04:36:56 -14.1 AT Down 43.9 156.6 Up 04:21:56 - 04:51:56 -3886
Beatty 04:36:46 -16.2 AT Down 45.6 159.3 Up 04:21:46 - 04:51:46 -3919
Bishop 04:36:53 -15.0 AT Down 44.7 157.3 Up 04:21:53 - 04:51:53 -3919
Indian Springs 04:36:42 -17.0 AT Down 46.2 160.7 Up 04:21:42 - 04:51:42 -3920
Henderson 04:36:39 -17.8 AT Down 46.9 161.4 Up 04:21:39 - 04:51:39 -3949
Patrick 04:36:34 -18.9 Dark Down 47.7 162.8 Up 04:21:34 - 04:51:34 -3974
Kingman/Dolan Springs 04:36:34 -18.9 Dark Down 47.9 162.4 Up 04:21:34 - 04:51:34 -3998
Laughlin/Bullhead City 04:36:36 -18.6 Dark Down 47.8 161.7 Up 04:21:36 - 04:51:36 -4013
Mohave Valley 04:36:36 -18.8 Dark Down 48.1 161.6 Up 04:21:36 - 04:51:36 -4036
Lake Havasu City 04:36:35 -19.3 Dark Down 48.5 161.8 Up 04:21:35 - 04:51:35 -4064
George/Scottsdale 04:36:24 -21.2 Dark Down 49.8 165.2 Up 04:21:24 - 04:51:24 -4069
Parker 04:36:34 -19.5 Dark Down 48.8 161.7 Up 04:21:34 - 04:51:34 -4093
Idyllwild 04:36:45 -18.4 Dark Down 48.5 158.1 Up 04:21:45 - 04:51:45 -4188
Wildwood 04:36:53 -17.1 AT Down 47.6 155.7 Up 04:21:53 - 04:51:53 -4205
Calipatria 04:36:40 -19.6 Dark Down 49.5 159.6 Up 04:21:40 - 04:51:40 -4212
Yuma 04:36:36 -20.4 Dark Down 50.1 160.7 Up 04:21:36 - 04:51:36 -4228

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 469361, (2024/06/01 04:20UT)
Object            RA         Dec     mag  sep  mel
Spica          13:25:11.5 -11:09:41  1.0 16.52 156
27Bet Lib      15:17:00.3 -09:22:59  2.6 12.80 131
99Iot Vir      14:16:00.9 -06:00:11  4.1  3.01 146
PPM 197589     14:28:48.1 -05:13:06  6.8  0.32 143
PPM 197567     14:27:15.0 -05:30:55  9.1  0.18 144
469361         14:27:53.0 -05:26:17 16.1       143
Positions are for J2000

Event circumstances last updated at 2022/03/26 23:42:57 UT

Marc W. Buie, Southwest Research Institute

RECON