RECON: TNO occultation with 12XR157

Event between 12XR157 and star GA0920:00783442 with event index number of 2035053

Geocentric closest approach at 2022/11/23 09:45:26 UTC

J2000 position of star is 05:34:43.2 +02:50:16
Equinox of date position of star is 05:35:54.7 +02:51:05
Stellar brightness G=14.5, 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 0% illuminated.
TNO apparent brightness V=22.3

[RECON map]
TNO is 39.9 AU from the Sun and 39.0 AU from the Earth.
The TNO is moving 24.1 km/sec on the sky relative to the star, or, 3.1 arcsec/hr.
The 1-sigma error in the time of the event is 94 seconds.
The 1-sigma cross-track error in the shadow position is 1743 km.
The sky-plane scale is 28319.5 km/arcsec.

The TNO has an absolute magnitude Hv=6.3
Diameter=334.2 km assuming a 5% albedo -- 13.9 sec chord
Diameter=136.4 km assuming a 30% albedo -- 5.7 sec chord
Dynamical classification is 2:1E
 
 
 
 
 
 

Star training set for 12XR157, (2022/11/23 09:46UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:56:24.7 +07:24:34  0.4  6.84 141
34Del Ori      05:33:10.6 -00:17:02  2.2  3.21 143
PPM 149035     05:31:06.1 +01:48:21  5.4  1.59 144
PPM 149138     05:35:15.9 +03:04:18  8.0  0.27 144
PPM 149147     05:35:40.6 +02:56:02 11.5  0.10 144
12XR157        05:35:55.1 +02:51:05 14.5       144
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 23.1 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)
Kamloops 09:44:19 -52.0 Dark Down 42.0 185.9 Up 09:35:57 - 09:52:41 10234
Kelowna 09:44:17 -52.1 Dark Down 42.8 187.2 Up 09:35:55 - 09:52:39 10156
Peachland 09:44:18 -52.3 Dark Down 42.9 186.8 Up 09:35:56 - 09:52:40 10153
Summerland 09:44:19 -52.4 Dark Down 43.0 186.9 Up 09:35:57 - 09:52:41 10140
Victoria 09:44:30 -54.9 Dark Down 44.3 181.9 Up 09:36:08 - 09:52:52 10136
Penticton 09:44:17 -52.4 Dark Down 43.1 187.1 Up 09:35:55 - 09:52:39 10133
Oliver 09:44:19 -52.6 Dark Down 43.4 187.1 Up 09:35:57 - 09:52:41 10106
Anarchist Mountain Observatory 09:44:17 -52.6 Dark Down 43.6 187.4 Up 09:35:55 - 09:52:39 10090
Sleaford 09:43:40 -43.9 Dark Down 38.4 204.1 Up 09:35:18 - 09:52:02 10071
Tonasket 09:44:18 -52.8 Dark Down 43.9 187.4 Up 09:35:56 - 09:52:40 10067
Okanogan 09:44:18 -53.1 Dark Down 44.3 187.2 Up 09:35:56 - 09:52:40 10045
Brewster 09:44:19 -53.4 Dark Down 44.5 187.0 Up 09:35:57 - 09:52:41 10028
Manson/Chelan 09:44:22 -53.7 Dark Down 44.8 186.5 Up 09:36:00 - 09:52:44 10020
Wenatchee 09:44:22 -54.1 Dark Down 45.3 186.3 Up 09:36:00 - 09:52:44 9986
Ellensburg 09:44:23 -54.5 Dark Down 45.7 186.0 Up 09:36:01 - 09:52:45 9959
Yakima 09:44:24 -54.7 Dark Down 46.1 186.1 Up 09:36:02 - 09:52:46 9928
Toppenish/White Swan 09:44:22 -54.8 Dark Down 46.3 186.3 Up 09:36:00 - 09:52:44 9907
Goldendale 09:44:24 -55.4 Dark Down 46.9 185.8 Up 09:36:02 - 09:52:46 9872
The Dalles 09:44:27 -55.7 Dark Down 47.1 185.3 Up 09:36:05 - 09:52:49 9862
PNWRO 09:44:20 -54.2 Dark Down 46.5 188.5 Up 09:35:58 - 09:52:42 9845
Maupin 09:44:26 -55.9 Dark Down 47.5 185.5 Up 09:36:04 - 09:52:48 9827
Sisters 09:44:29 -56.7 Dark Down 48.4 184.8 Up 09:36:07 - 09:52:51 9767
Bend 09:44:27 -56.7 Dark Down 48.7 185.2 Up 09:36:05 - 09:52:49 9742
Oregon Observatory 09:44:27 -56.9 Dark Down 48.8 185.1 Up 09:36:05 - 09:52:49 9731
North Lake 09:44:26 -56.9 Dark Down 49.4 186.0 Up 09:36:04 - 09:52:48 9666
Chiloquin 09:44:30 -57.9 Dark Down 50.2 184.6 Up 09:36:08 - 09:52:52 9632
Klamath Falls 09:44:30 -58.0 Dark Down 50.5 184.7 Up 09:36:08 - 09:52:52 9602
Lakeview 09:44:25 -57.2 Dark Down 50.5 187.0 Up 09:36:03 - 09:52:47 9565
Cedarville 09:44:27 -57.4 Dark Down 51.1 187.3 Up 09:36:05 - 09:52:49 9506
Fall River/Burney 09:44:30 -58.4 Dark Down 51.7 185.5 Up 09:36:08 - 09:52:52 9493
Susanville 09:44:28 -58.3 Dark Down 52.2 186.8 Up 09:36:06 - 09:52:50 9422
Greenville 09:44:31 -58.6 Dark Down 52.5 186.3 Up 09:36:09 - 09:52:53 9405
Gimple 09:44:29 -58.6 Dark Down 52.5 186.5 Up 09:36:07 - 09:52:51 9403
Quincy 09:44:30 -58.7 Dark Down 52.7 186.4 Up 09:36:08 - 09:52:52 9388
Portola 09:44:28 -58.5 Dark Down 52.8 187.1 Up 09:36:06 - 09:52:50 9366
Reno 09:44:26 -58.2 Dark Down 53.0 188.3 Up 09:36:04 - 09:52:48 9327
Carson City 09:44:26 -58.3 Dark Down 53.4 188.4 Up 09:36:04 - 09:52:48 9295
Gardnerville 09:44:25 -58.4 Dark Down 53.6 188.5 Up 09:36:03 - 09:52:47 9273
Yerington 09:44:24 -58.0 Dark Down 53.5 189.4 Up 09:36:02 - 09:52:46 9263
Hawthorne 09:44:23 -57.8 Dark Down 53.9 190.4 Up 09:36:01 - 09:52:45 9209
Lee Vining 09:44:24 -58.4 Dark Down 54.5 189.8 Up 09:36:02 - 09:52:46 9171
Tonopah 09:44:18 -57.0 Dark Down 54.1 192.9 Up 09:35:56 - 09:52:40 9134
Bishop 09:44:24 -58.1 Dark Down 55.0 191.1 Up 09:36:02 - 09:52:46 9100
Dunrhomin 09:43:37 -47.6 Dark Down 48.7 210.2 Up 09:35:15 - 09:51:59 9057
CU-SBO 09:43:38 -47.7 Dark Down 48.9 210.2 Up 09:35:16 - 09:52:00 9036
Beatty 09:44:17 -57.1 Dark Down 55.2 194.1 Up 09:35:55 - 09:52:39 9018
Indian Springs 09:44:14 -56.4 Dark Down 55.2 196.0 Up 09:35:52 - 09:52:36 8962
Henderson 09:44:12 -56.1 Dark Down 55.6 197.4 Up 09:35:50 - 09:52:34 8896
Patrick 09:44:08 -55.4 Dark Down 55.9 199.6 Up 09:35:46 - 09:52:30 8810
Wildwood 09:44:26 -59.4 Dark Down 58.2 191.8 Up 09:36:04 - 09:52:48 8806
Laughlin/Bullhead City 09:44:12 -56.0 Dark Down 56.3 198.5 Up 09:35:50 - 09:52:34 8805
Kingman/Dolan Springs 09:44:09 -55.6 Dark Down 56.2 199.4 Up 09:35:47 - 09:52:31 8795
Mohave Valley 09:44:12 -56.1 Dark Down 56.6 198.6 Up 09:35:50 - 09:52:34 8779
Lake Havasu City 09:44:11 -56.0 Dark Down 56.9 199.3 Up 09:35:49 - 09:52:33 8736
Idyllwild 09:44:19 -58.1 Dark Down 58.2 195.4 Up 09:35:57 - 09:52:41 8725
Parker 09:44:11 -56.1 Dark Down 57.2 199.5 Up 09:35:49 - 09:52:33 8702
Calipatria 09:44:17 -57.3 Dark Down 58.5 197.8 Up 09:35:55 - 09:52:39 8637
George/Scottsdale 09:44:03 -54.2 Dark Down 56.9 204.0 Up 09:35:41 - 09:52:25 8601
Yuma 09:44:13 -56.7 Dark Down 58.7 199.7 Up 09:35:51 - 09:52:35 8573

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 12XR157, (2022/11/23 09:46UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:55:10.3 +07:24:26  0.4  6.84 141
34Del Ori      05:32:00.4 -00:17:57  2.2  3.21 143
PPM 149035     05:29:54.7 +01:47:22  5.4  1.59 144
PPM 149138     05:34:03.9 +03:03:27  8.0  0.27 144
PPM 149147     05:34:28.6 +02:55:13 11.5  0.10 144
12XR157        05:34:43.2 +02:50:16 14.5       144
Positions are for J2000

Event circumstances last updated at 2022/10/10 04:16:08 UT

Marc W. Buie, Southwest Research Institute

RECON