RECON: TNO occultation with 54598

Event between (54598) Bienor and star GA1320:03565284 with event index number of 1210411

Geocentric closest approach at 2022/08/26 10:32:06 UTC

J2000 position of star is 06:13:41.1 +42:14:08
Equinox of date position of star is 06:15:16.6 +42:13:40
Stellar brightness G=16.4, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 51 degrees from the moon. Moon is 1% illuminated.
TNO apparent brightness V=19.2

[RECON map]
TNO is 13.8 AU from the Sun and 14.3 AU from the Earth.
The TNO is moving 23.9 km/sec on the sky relative to the star, or, 8.3 arcsec/hr.
The 1-sigma error in the time of the event is 26 seconds.
The 1-sigma cross-track error in the shadow position is 529 km.
The sky-plane scale is 10336.3 km/arcsec.

The TNO has an absolute magnitude Hv=7.4
Diameter=187.1 km assuming a 5% albedo -- 8.2 sec chord
Diameter=76.4 km assuming a 30% albedo -- 3.3 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 54598, (2022/08/26 10:32UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:46:42.0 +27:58:11  1.1 23.38  30
34Bet Aur      06:01:11.5 +44:56:50  1.9  3.73  54
38 Aur         06:04:56.0 +42:54:30  6.1  2.03  53
PPM 048882     06:16:31.6 +42:06:51  8.4  0.25  51
54598          06:15:18.2 +42:13:39 16.4        51
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 15.1 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)
Victoria 10:29:54 -24.1 Dark Down 33.3 61.9 Up 10:27:13 - 10:32:35 4550
Kamloops 10:30:02 -21.2 Dark Down 36.0 64.9 Up 10:27:21 - 10:32:43 4476
Peachland 10:29:59 -21.6 Dark Down 36.0 64.7 Up 10:27:18 - 10:32:40 4414
Summerland 10:29:58 -21.7 Dark Down 36.0 64.6 Up 10:27:17 - 10:32:39 4404
Kelowna 10:29:59 -21.4 Dark Down 36.2 64.9 Up 10:27:18 - 10:32:40 4404
Penticton 10:29:58 -21.7 Dark Down 36.0 64.6 Up 10:27:17 - 10:32:39 4396
Oliver 10:29:56 -22.0 Dark Down 35.9 64.4 Up 10:27:15 - 10:32:37 4383
Anarchist Mountain Observatory 10:29:55 -22.0 Dark Down 35.9 64.4 Up 10:27:14 - 10:32:36 4368
Manson/Chelan 10:29:51 -23.3 Dark Down 34.9 63.2 Up 10:27:10 - 10:32:32 4364
Tonasket 10:29:54 -22.3 Dark Down 35.7 64.2 Up 10:27:13 - 10:32:35 4359
Wenatchee 10:29:49 -23.7 Dark Down 34.6 62.9 Up 10:27:08 - 10:32:30 4355
Okanogan 10:29:53 -22.6 Dark Down 35.5 63.9 Up 10:27:12 - 10:32:34 4354
Brewster 10:29:52 -22.9 Dark Down 35.2 63.6 Up 10:27:11 - 10:32:33 4354
Ellensburg 10:29:48 -24.1 Dark Down 34.3 62.5 Up 10:27:07 - 10:32:29 4350
Yakima 10:29:46 -24.4 Dark Down 34.1 62.2 Up 10:27:05 - 10:32:27 4335
The Dalles 10:29:43 -25.5 Dark Down 33.2 61.3 Up 10:27:02 - 10:32:24 4328
Goldendale 10:29:43 -25.1 Dark Down 33.5 61.6 Up 10:27:02 - 10:32:24 4318
Toppenish/White Swan 10:29:45 -24.5 Dark Down 34.1 62.2 Up 10:27:04 - 10:32:26 4318
Maupin 10:29:41 -25.8 Dark Down 33.1 61.1 Up 10:27:00 - 10:32:22 4306
Sisters 10:29:38 -26.7 Dark Down 32.3 60.4 Up 10:26:57 - 10:32:19 4297
Bend 10:29:36 -26.7 Dark Down 32.4 60.4 Up 10:26:55 - 10:32:17 4273
Oregon Observatory 10:29:36 -26.9 Dark Down 32.2 60.2 Up 10:26:55 - 10:32:17 4273
Chiloquin 10:29:31 -28.1 Dark Down 31.3 59.3 Up 10:26:50 - 10:32:12 4240
PNWRO 10:29:43 -24.1 Dark Down 34.8 62.7 Up 10:27:02 - 10:32:24 4224
Klamath Falls 10:29:30 -28.4 Dark Down 31.1 59.2 Up 10:26:49 - 10:32:11 4221
North Lake 10:29:33 -27.2 Dark Down 32.2 60.1 Up 10:26:52 - 10:32:14 4216
Fall River/Burney 10:29:25 -29.1 Dark Down 30.8 58.7 Up 10:26:44 - 10:32:06 4147
Lakeview 10:29:29 -27.7 Dark Down 32.0 59.8 Up 10:26:48 - 10:32:10 4139
Cedarville 10:29:27 -28.1 Dark Down 31.8 59.5 Up 10:26:46 - 10:32:08 4099
Greenville 10:29:22 -29.6 Dark Down 30.6 58.5 Up 10:26:41 - 10:32:03 4080
Susanville 10:29:23 -29.2 Dark Down 30.9 58.7 Up 10:26:42 - 10:32:04 4076
Gimple 10:29:22 -29.5 Dark Down 30.6 58.5 Up 10:26:41 - 10:32:03 4075
Quincy 10:29:21 -29.7 Dark Down 30.5 58.4 Up 10:26:40 - 10:32:02 4070
Portola 10:29:20 -29.6 Dark Down 30.7 58.5 Up 10:26:39 - 10:32:01 4037
Reno 10:29:19 -29.4 Dark Down 31.0 58.6 Up 10:26:38 - 10:32:00 3986
Carson City 10:29:18 -29.7 Dark Down 30.8 58.4 Up 10:26:37 - 10:31:59 3967
Gardnerville 10:29:17 -29.8 Dark Down 30.7 58.3 Up 10:26:36 - 10:31:58 3953
Yerington 10:29:17 -29.5 Dark Down 31.1 58.6 Up 10:26:36 - 10:31:58 3920
Lee Vining 10:29:14 -30.2 Dark Down 30.6 58.1 Up 10:26:33 - 10:31:55 3867
Hawthorne 10:29:16 -29.5 Dark Down 31.2 58.5 Up 10:26:35 - 10:31:57 3866
Sleaford 10:30:12 -13.7 AT Down 45.0 74.7 Up 10:27:31 - 10:32:53 3837
Bishop 10:29:12 -30.2 Dark Down 30.8 58.0 Up 10:26:31 - 10:31:53 3792
Tonopah 10:29:14 -29.1 Dark Down 31.9 58.8 Up 10:26:33 - 10:31:55 3757
Beatty 10:29:10 -29.6 Dark Down 31.6 58.3 Up 10:26:29 - 10:31:51 3668
Wildwood 10:29:01 -32.7 Dark Down 28.8 56.4 Low 10:26:20 - 10:31:42 3630
Indian Springs 10:29:09 -29.2 Dark Down 32.2 58.5 Up 10:26:28 - 10:31:50 3584
Henderson 10:29:07 -29.1 Dark Down 32.4 58.5 Up 10:26:26 - 10:31:48 3511
Idyllwild 10:28:59 -31.8 Dark Down 29.9 56.8 Low 10:26:18 - 10:31:40 3491
Laughlin/Bullhead City 10:29:04 -29.5 Dark Down 32.2 58.1 Up 10:26:23 - 10:31:45 3436
Mohave Valley 10:29:04 -29.7 Dark Down 32.1 58.0 Up 10:26:23 - 10:31:45 3420
Patrick 10:29:05 -28.9 Dark Down 32.8 58.5 Up 10:26:24 - 10:31:46 3405
Kingman/Dolan Springs 10:29:04 -29.1 Dark Down 32.6 58.3 Up 10:26:23 - 10:31:45 3405
Lake Havasu City 10:29:02 -29.8 Dark Down 32.0 57.8 Up 10:26:21 - 10:31:43 3381
Calipatria 10:28:57 -31.4 Dark Down 30.4 56.8 Up 10:26:16 - 10:31:38 3379
Parker 10:29:01 -30.0 Dark Down 31.8 57.7 Up 10:26:20 - 10:31:42 3359
Yuma 10:28:57 -31.1 Dark Down 30.8 56.8 Up 10:26:16 - 10:31:38 3295
George/Scottsdale 10:29:00 -28.7 Dark Down 33.3 58.1 Up 10:26:19 - 10:31:41 3177
Dunrhomin 10:29:26 -20.4 Dark Down 41.2 64.6 Up 10:26:45 - 10:32:07 3153
CU-SBO 10:29:25 -20.6 Dark Down 41.0 64.4 Up 10:26:44 - 10:32:06 3144

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 54598, (2022/08/26 10:32UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:45:17.9 +28:01:33  1.1 23.38  30
34Bet Aur      05:59:31.6 +44:56:51  1.9  3.73  54
38 Aur         06:03:18.2 +42:54:39  6.1  2.03  53
PPM 048882     06:14:54.7 +42:07:22  8.4  0.25  51
54598          06:13:41.1 +42:14:08 16.4        51
Positions are for J2000

Event circumstances last updated at 2022/04/17 00:15:52 UT

Marc W. Buie, Southwest Research Institute

RECON