RECON: TNO occultation with 10XE91

Event between 10XE91 and star GA0980:01530642 with event index number of 2110137

Geocentric closest approach at 2022/12/23 04:27:10 UTC

J2000 position of star is 06:16:12.8 +08:36:35
Equinox of date position of star is 06:17:27.4 +08:36:01
Stellar brightness G=15.3, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 161 degrees from the moon. Moon is 0% illuminated.
TNO apparent brightness V=22.8

[RECON map]
TNO is 40.6 AU from the Sun and 39.6 AU from the Earth.
The TNO is moving 25.2 km/sec on the sky relative to the star, or, 3.2 arcsec/hr.
The 1-sigma error in the time of the event is 140 seconds.
The 1-sigma cross-track error in the shadow position is 1532 km.
The sky-plane scale is 28744.4 km/arcsec.

The TNO has an absolute magnitude Hv=6.7
Diameter=280.6 km assuming a 5% albedo -- 11.2 sec chord
Diameter=114.5 km assuming a 30% albedo -- 4.6 sec chord
Dynamical classification is SCATNEAR
 
 
 
 
 
 

Star training set for 10XE91, (2022/12/23 04:27UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:56:25.0 +07:24:34  0.4  5.35 160
Alhena         06:39:02.3 +16:22:40  1.9  9.39 165
75 Ori         06:18:22.6 +09:55:56  5.4  1.35 162
PPM 150181     06:17:00.9 +08:26:54  8.1  0.19 160
PPM 150198     06:17:31.1 +08:27:29 10.2  0.14 160
10XE91         06:17:28.1 +08:36:01 15.3       160
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 27.1 km RECON observability=1.0 and success probability=5.7%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Sleaford 04:29:02 -49.1 Dark Down 35.2 127.4 Up 04:16:53 - 04:41:12 4945
Kamloops 04:29:32 -41.3 Dark Down 28.2 112.7 Low 04:17:23 - 04:41:42 4907
Kelowna 04:29:33 -42.1 Dark Down 29.0 113.1 Low 04:17:24 - 04:41:43 4835
Peachland 04:29:34 -41.9 Dark Down 28.9 112.8 Low 04:17:24 - 04:41:43 4828
Summerland 04:29:34 -42.0 Dark Down 29.0 112.8 Low 04:17:25 - 04:41:44 4815
Penticton 04:29:34 -42.1 Dark Down 29.1 112.9 Low 04:17:25 - 04:41:44 4809
Oliver 04:29:35 -42.2 Dark Down 29.2 112.7 Low 04:17:26 - 04:41:45 4780
Anarchist Mountain Observatory 04:29:35 -42.3 Dark Down 29.4 112.8 Low 04:17:26 - 04:41:45 4765
Victoria 04:29:42 -39.8 Dark Down 27.1 109.0 Low 04:17:33 - 04:41:52 4752
Tonasket 04:29:36 -42.4 Dark Down 29.5 112.6 Low 04:17:27 - 04:41:46 4739
Okanogan 04:29:37 -42.3 Dark Down 29.5 112.2 Low 04:17:27 - 04:41:46 4712
Brewster 04:29:38 -42.3 Dark Down 29.5 111.9 Low 04:17:29 - 04:41:48 4691
Manson/Chelan 04:29:39 -42.1 Dark Down 29.4 111.5 Low 04:17:30 - 04:41:49 4676
Wenatchee 04:29:41 -42.0 Dark Down 29.4 111.1 Low 04:17:31 - 04:41:50 4637
Ellensburg 04:29:42 -42.0 Dark Down 29.5 110.7 Low 04:17:32 - 04:41:51 4603
Yakima 04:29:43 -42.0 Dark Down 29.6 110.5 Low 04:17:34 - 04:41:53 4568
Toppenish/White Swan 04:29:43 -42.2 Dark Down 29.8 110.5 Low 04:17:34 - 04:41:53 4548
PNWRO 04:29:42 -43.3 Dark Down 30.9 111.6 Up 04:17:32 - 04:41:51 4506
Goldendale 04:29:46 -42.0 Dark Down 29.7 109.8 Low 04:17:36 - 04:41:55 4504
The Dalles 04:29:46 -41.8 Dark Down 29.5 109.4 Low 04:17:37 - 04:41:56 4487
Maupin 04:29:47 -41.9 Dark Down 29.7 109.3 Low 04:17:37 - 04:41:56 4450
Sisters 04:29:50 -41.7 Dark Down 29.7 108.4 Low 04:17:41 - 04:42:00 4376
Bend 04:29:50 -41.9 Dark Down 30.0 108.5 Low 04:17:41 - 04:42:00 4353
Oregon Observatory 04:29:51 -41.9 Dark Down 29.9 108.3 Low 04:17:42 - 04:42:01 4339
North Lake 04:29:51 -42.3 Dark Down 30.5 108.4 Up 04:17:42 - 04:42:01 4278
Chiloquin 04:29:55 -41.7 Dark Down 30.0 107.2 Up 04:17:46 - 04:42:05 4224
Klamath Falls 04:29:56 -41.8 Dark Down 30.2 107.1 Up 04:17:46 - 04:42:05 4192
Lakeview 04:29:53 -42.8 Dark Down 31.2 108.2 Up 04:17:44 - 04:42:03 4178
Cedarville 04:29:54 -43.1 Dark Down 31.6 108.0 Up 04:17:45 - 04:42:04 4117
Fall River/Burney 04:29:58 -42.2 Dark Down 30.8 106.8 Up 04:17:48 - 04:42:07 4081
Susanville 04:29:58 -42.8 Dark Down 31.6 107.0 Up 04:17:48 - 04:42:07 4017
Greenville 04:29:58 -42.6 Dark Down 31.4 106.6 Up 04:17:49 - 04:42:08 3994
Gimple 04:29:59 -42.7 Dark Down 31.5 106.7 Up 04:17:49 - 04:42:08 3993
Quincy 04:29:59 -42.6 Dark Down 31.5 106.5 Up 04:17:50 - 04:42:09 3975
Portola 04:29:58 -43.0 Dark Down 31.9 106.8 Up 04:17:49 - 04:42:08 3960
Reno 04:29:58 -43.5 Dark Down 32.4 107.1 Up 04:17:48 - 04:42:07 3930
Dunrhomin 04:29:23 -54.3 Dark Down 42.3 120.4 Up 04:17:13 - 04:41:32 3904
Carson City 04:29:58 -43.5 Dark Down 32.5 106.9 Up 04:17:49 - 04:42:08 3896
CU-SBO 04:29:23 -54.3 Dark Down 42.4 120.1 Up 04:17:14 - 04:41:33 3881
Yerington 04:29:58 -44.0 Dark Down 33.1 107.3 Up 04:17:48 - 04:42:07 3873
Gardnerville 04:29:59 -43.6 Dark Down 32.7 106.8 Up 04:17:50 - 04:42:09 3872
Hawthorne 04:29:57 -44.5 Dark Down 33.6 107.4 Up 04:17:48 - 04:42:07 3824
Lee Vining 04:30:00 -44.2 Dark Down 33.4 106.7 Up 04:17:50 - 04:42:09 3775
Tonopah 04:29:55 -45.6 Dark Down 34.8 108.2 Up 04:17:46 - 04:42:05 3769
Bishop 04:29:59 -44.8 Dark Down 34.1 106.9 Up 04:17:50 - 04:42:09 3712
Beatty 04:29:57 -46.1 Dark Down 35.5 107.8 Up 04:17:47 - 04:42:06 3654
Indian Springs 04:29:55 -47.0 Dark Down 36.4 108.4 Up 04:17:45 - 04:42:04 3615
Henderson 04:29:54 -47.5 Dark Down 37.1 108.6 Up 04:17:44 - 04:42:03 3557
Patrick 04:29:53 -48.5 Dark Down 38.2 109.0 Up 04:17:43 - 04:42:02 3488
Laughlin/Bullhead City 04:29:55 -47.9 Dark Down 37.7 108.3 Up 04:17:45 - 04:42:04 3469
Kingman/Dolan Springs 04:29:53 -48.4 Dark Down 38.1 108.7 Up 04:17:44 - 04:42:03 3468
Mohave Valley 04:29:55 -48.0 Dark Down 37.8 108.1 Up 04:17:46 - 04:42:05 3442
Lake Havasu City 04:29:55 -48.2 Dark Down 38.1 108.0 Up 04:17:46 - 04:42:05 3401
Wildwood 04:30:06 -44.7 Dark Down 34.9 104.6 Up 04:17:56 - 04:42:15 3394
Parker 04:29:56 -48.2 Dark Down 38.3 107.7 Up 04:17:46 - 04:42:05 3366
Idyllwild 04:30:02 -46.2 Dark Down 36.5 105.6 Up 04:17:52 - 04:42:11 3344
George/Scottsdale 04:29:51 -50.2 Dark Down 40.3 109.3 Up 04:17:41 - 04:42:00 3306
Calipatria 04:30:01 -47.2 Dark Down 37.6 106.1 Up 04:17:51 - 04:42:10 3273
Yuma 04:29:59 -48.0 Dark Down 38.4 106.4 Up 04:17:49 - 04:42:08 3223

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 10XE91, (2022/12/23 04:27UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:55:10.3 +07:24:26  0.4  5.35 160
Alhena         06:37:42.8 +16:23:57  1.9  9.39 165
75 Ori         06:17:06.6 +09:56:31  5.4  1.35 162
PPM 150181     06:15:45.7 +08:27:27  8.1  0.19 160
PPM 150198     06:16:15.8 +08:28:03 10.2  0.14 160
10XE91         06:16:12.8 +08:36:35 15.3       161
Positions are for J2000

Event circumstances last updated at 2022/10/01 04:18:03 UT

Marc W. Buie, Southwest Research Institute

RECON