RECON: TNO occultation with 612332

Event between (612332) 02CW224 and star GA1180:02154278 with event index number of 2812258

Geocentric closest approach at 2022/12/22 03:44:08 UTC

J2000 position of star is 06:00:12.9 +29:16:23
Equinox of date position of star is 06:01:38.3 +29:16:22
Stellar brightness G=12.2, use SENSEUP=16 with the MallinCam and and exposure time of 250 milli-seconds with the QHY174 camera.
Star is 162 degrees from the moon. Moon is 2% illuminated.
TNO apparent brightness V=22.4

[RECON map]
TNO is 33.8 AU from the Sun and 32.8 AU from the Earth.
The TNO is moving 24.9 km/sec on the sky relative to the star, or, 3.8 arcsec/hr.
The 1-sigma error in the time of the event is 201 seconds.
The 1-sigma cross-track error in the shadow position is 1303 km.
The sky-plane scale is 23800.2 km/arcsec.

The TNO has an absolute magnitude Hv=7.1
Diameter=224.9 km assuming a 5% albedo -- 9.0 sec chord
Diameter=91.8 km assuming a 30% albedo -- 3.7 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 

Star training set for 612332, (2022/12/22 03:44UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:56:25.0 +07:24:34  0.4 21.90 155
Alnath         05:27:44.8 +28:37:29  1.6  7.45 170
PPM 095117     05:58:01.4 +28:56:38  6.5  0.86 163
PPM 095222     06:02:04.7 +29:00:15  7.9  0.28 162
PPM 095208     06:01:39.6 +29:25:08  9.9  0.15 162
PPM 095224     06:02:09.6 +29:16:18 10.8  0.10 162
612332         06:01:40.7 +29:16:22 12.2       162
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 4.5 sigma about the mid-time.
The median site spacing is 25.1 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 03:46:36 -34.7 Dark Down 38.9 89.7 Up 03:31:36 - 04:01:36 8306
Victoria 03:46:46 -32.8 Dark Down 36.9 85.8 Up 03:31:46 - 04:01:46 8229
Peachland 03:46:38 -35.1 Dark Down 39.3 89.4 Up 03:31:38 - 04:01:38 8213
Kelowna 03:46:36 -35.3 Dark Down 39.5 89.7 Up 03:31:36 - 04:01:36 8212
Summerland 03:46:38 -35.2 Dark Down 39.4 89.3 Up 03:31:38 - 04:01:38 8197
Penticton 03:46:38 -35.3 Dark Down 39.5 89.4 Up 03:31:38 - 04:01:38 8188
Oliver 03:46:39 -35.3 Dark Down 39.5 89.1 Up 03:31:39 - 04:01:39 8159
Anarchist Mountain Observatory 03:46:39 -35.5 Dark Down 39.6 89.1 Up 03:31:39 - 04:01:39 8139
Tonasket 03:46:40 -35.4 Dark Down 39.5 88.8 Up 03:31:40 - 04:01:40 8115
Okanogan 03:46:42 -35.4 Dark Down 39.4 88.4 Up 03:31:42 - 04:01:42 8092
Brewster 03:46:43 -35.2 Dark Down 39.3 88.0 Up 03:31:43 - 04:01:43 8076
Manson/Chelan 03:46:44 -35.0 Dark Down 39.0 87.6 Up 03:31:44 - 04:01:44 8070
Wenatchee 03:46:46 -34.9 Dark Down 38.9 87.1 Up 03:31:46 - 04:01:46 8036
Sleaford 03:46:10 -43.2 Dark Down 47.7 103.2 Up 03:31:10 - 04:01:10 8022
Ellensburg 03:46:47 -34.8 Dark Down 38.7 86.6 Up 03:31:47 - 04:01:47 8008
Yakima 03:46:48 -34.8 Dark Down 38.7 86.3 Up 03:31:48 - 04:01:48 7974
Toppenish/White Swan 03:46:48 -34.9 Dark Down 38.8 86.2 Up 03:31:48 - 04:01:48 7950
Goldendale 03:46:51 -34.7 Dark Down 38.5 85.5 Up 03:31:51 - 04:01:51 7917
The Dalles 03:46:52 -34.4 Dark Down 38.2 85.1 Up 03:31:52 - 04:01:52 7910
Maupin 03:46:53 -34.5 Dark Down 38.2 84.8 Up 03:31:53 - 04:01:53 7871
PNWRO 03:46:47 -36.0 Dark Down 39.8 87.0 Up 03:31:47 - 04:01:47 7869
Sisters 03:46:57 -34.1 Dark Down 37.8 83.8 Up 03:31:57 - 04:01:57 7813
Bend 03:46:57 -34.3 Dark Down 38.0 83.8 Up 03:31:57 - 04:01:57 7783
Oregon Observatory 03:46:57 -34.2 Dark Down 37.9 83.6 Up 03:31:57 - 04:01:57 7773
North Lake 03:46:58 -34.6 Dark Down 38.2 83.4 Up 03:31:58 - 04:01:58 7698
Chiloquin 03:47:01 -33.9 Dark Down 37.4 82.3 Up 03:32:01 - 04:02:01 7673
Klamath Falls 03:47:02 -34.0 Dark Down 37.4 82.1 Up 03:32:02 - 04:02:02 7640
Lakeview 03:47:00 -35.0 Dark Down 38.5 83.0 Up 03:32:00 - 04:02:00 7585
Fall River/Burney 03:47:05 -34.2 Dark Down 37.6 81.5 Up 03:32:05 - 04:02:05 7521
Cedarville 03:47:02 -35.1 Dark Down 38.5 82.5 Up 03:32:02 - 04:02:02 7520
Susanville 03:47:05 -34.7 Dark Down 38.0 81.4 Up 03:32:05 - 04:02:05 7437
Greenville 03:47:06 -34.5 Dark Down 37.8 81.0 Up 03:32:06 - 04:02:06 7423
Gimple 03:47:07 -34.6 Dark Down 37.8 81.1 Up 03:32:07 - 04:02:07 7420
Quincy 03:47:07 -34.5 Dark Down 37.7 80.9 Up 03:32:07 - 04:02:07 7405
Portola 03:47:06 -34.9 Dark Down 38.1 81.0 Up 03:32:06 - 04:02:06 7376
Reno 03:47:06 -35.3 Dark Down 38.5 81.2 Up 03:32:06 - 04:02:06 7328
Carson City 03:47:07 -35.3 Dark Down 38.5 80.9 Up 03:32:07 - 04:02:07 7294
Gardnerville 03:47:08 -35.4 Dark Down 38.5 80.8 Up 03:32:08 - 04:02:08 7270
Yerington 03:47:06 -35.8 Dark Down 38.9 81.1 Up 03:32:06 - 04:02:06 7253
Hawthorne 03:47:07 -36.2 Dark Down 39.3 81.0 Up 03:32:07 - 04:02:07 7190
Lee Vining 03:47:09 -35.8 Dark Down 38.8 80.3 Up 03:32:09 - 04:02:09 7156
Tonopah 03:47:05 -37.3 Dark Down 40.3 81.4 Up 03:32:05 - 04:02:05 7094
Bishop 03:47:09 -36.4 Dark Down 39.3 80.2 Up 03:32:09 - 04:02:09 7073
Beatty 03:47:08 -37.6 Dark Down 40.5 80.6 Up 03:32:08 - 04:02:08 6969
Indian Springs 03:47:06 -38.5 Dark Down 41.3 80.9 Up 03:32:06 - 04:02:06 6897
Dunrhomin 03:46:36 -46.4 Dark Down 49.7 90.4 Up 03:31:36 - 04:01:36 6897
CU-SBO 03:46:36 -46.4 Dark Down 49.6 90.1 Up 03:31:36 - 04:01:36 6876
Henderson 03:47:06 -39.0 Dark Down 41.8 80.7 Up 03:32:06 - 04:02:06 6821
Wildwood 03:47:17 -35.9 Dark Down 38.5 77.5 Up 03:32:17 - 04:02:17 6773
Laughlin/Bullhead City 03:47:07 -39.3 Dark Down 41.9 80.1 Up 03:32:07 - 04:02:07 6722
Patrick 03:47:05 -39.9 Dark Down 42.5 80.7 Up 03:32:05 - 04:02:05 6719
Kingman/Dolan Springs 03:47:06 -39.7 Dark Down 42.4 80.4 Up 03:32:06 - 04:02:06 6705
Mohave Valley 03:47:08 -39.3 Dark Down 41.9 79.9 Up 03:32:08 - 04:02:08 6695
Idyllwild 03:47:14 -37.5 Dark Down 40.0 78.0 Up 03:32:14 - 04:02:14 6665
Lake Havasu City 03:47:08 -39.5 Dark Down 42.0 79.7 Up 03:32:08 - 04:02:08 6647
Parker 03:47:08 -39.5 Dark Down 42.0 79.4 Up 03:32:08 - 04:02:08 6612
Calipatria 03:47:13 -38.4 Dark Down 40.8 78.0 Up 03:32:13 - 04:02:13 6560
Yuma 03:47:12 -39.1 Dark Down 41.4 78.0 Up 03:32:12 - 04:02:12 6484
George/Scottsdale 03:47:04 -41.5 Dark Down 43.9 80.0 Up 03:32:04 - 04:02:04 6480

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 612332, (2022/12/22 03:44UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:55:10.3 +07:24:26  0.4 21.90 155
Alnath         05:26:17.6 +28:36:23  1.6  7.45 170
PPM 095117     05:56:33.8 +28:56:32  6.5  0.86 163
PPM 095222     06:00:37.0 +29:00:18  7.9  0.28 162
PPM 095208     06:00:11.7 +29:25:10  9.9  0.15 162
PPM 095224     06:00:41.7 +29:16:20 10.8  0.10 162
612332         06:00:12.9 +29:16:23 12.2       162
Positions are for J2000

Event circumstances last updated at 2022/05/03 00:51:41 UT

Marc W. Buie, Southwest Research Institute

RECON