RECON: TNO occultation with 612237

Event between (612237) 01QP297 and star GA0960:00124539 with event index number of 2811411

Geocentric closest approach at 2024/09/11 12:08:12 UTC

J2000 position of star is 01:17:35.9 +06:37:21
Equinox of date position of star is 01:18:45.8 +06:44:23
Stellar brightness G=15.6, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 118 degrees from the moon. Moon is 53% illuminated.
TNO apparent brightness V=23.6

[RECON map]
TNO is 45.9 AU from the Sun and 45.0 AU from the Earth.
The TNO is moving 21.1 km/sec on the sky relative to the star, or, 2.3 arcsec/hr.
The 1-sigma error in the time of the event is 393 seconds.
The 1-sigma cross-track error in the shadow position is 4121 km.
The sky-plane scale is 32650.6 km/arcsec.

The TNO has an absolute magnitude Hv=6.9
Diameter=254.7 km assuming a 5% albedo -- 12.1 sec chord
Diameter=104.0 km assuming a 30% albedo -- 4.9 sec chord
Dynamical classification is CLASSICAL
 
 
 
 
 
 

Star training set for 612237, (2024/09/11 12:08UT)
Object            RA         Dec     mag  sep  mel
6Bet Ari       01:56:00.6 +20:55:40  2.6 16.78 132
80 Psc         01:09:38.7 +05:46:47  5.5  2.49 115
PPM 144454     01:18:52.8 +06:00:49  8.1  0.74 118
PPM 144439     01:18:12.5 +06:56:30  9.6  0.25 118
612237         01:18:53.2 +06:45:07 15.6       118
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 2.3 sigma about the mid-time.
The median site spacing is 36.3 km RECON observability=0.7 and success probability=8.9%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kamloops 12:05:14 -13.9 AT Down 38.3 222.9 Up 11:50:14 - 12:20:14 -3522
Kelowna 12:05:11 -13.8 AT Down 38.5 224.4 Up 11:50:11 - 12:20:11 -3613
Peachland 12:05:12 -14.0 AT Down 38.7 224.1 Up 11:50:12 - 12:20:12 -3618
Sleaford 12:04:41 -5.1 CT Down 30.6 237.3 Up 11:49:41 - 12:19:41 -3624
Summerland 12:05:12 -14.0 AT Down 38.8 224.3 Up 11:50:12 - 12:20:12 -3633
Penticton 12:05:12 -13.9 AT Down 38.8 224.5 Up 11:50:12 - 12:20:12 -3641
Victoria 12:05:22 -16.6 AT Down 41.2 220.6 Up 11:50:22 - 12:20:22 -3656
Oliver 12:05:11 -14.1 AT Down 39.0 224.7 Up 11:50:11 - 12:20:11 -3674
Anarchist Mountain Observatory 12:05:10 -14.1 AT Down 39.1 225.0 Up 11:50:10 - 12:20:10 -3693
Tonasket 12:05:11 -14.2 AT Down 39.3 225.1 Up 11:50:11 - 12:20:11 -3720
Okanogan 12:05:11 -14.4 AT Down 39.6 225.1 Up 11:50:11 - 12:20:11 -3749
Brewster 12:05:11 -14.7 AT Down 39.9 225.0 Up 11:50:11 - 12:20:11 -3770
Manson/Chelan 12:05:12 -15.0 AT Down 40.2 224.7 Up 11:50:12 - 12:20:12 -3782
Wenatchee 12:05:13 -15.3 AT Down 40.6 224.8 Up 11:50:13 - 12:20:13 -3822
Ellensburg 12:05:13 -15.6 AT Down 41.0 224.8 Up 11:50:13 - 12:20:13 -3857
Yakima 12:05:13 -15.8 AT Down 41.3 225.1 Up 11:50:13 - 12:20:13 -3894
Toppenish/White Swan 12:05:13 -15.8 AT Down 41.4 225.4 Up 11:50:13 - 12:20:13 -3918
Goldendale 12:05:13 -16.2 AT Down 42.0 225.2 Up 11:50:13 - 12:20:13 -3961
The Dalles 12:05:14 -16.6 AT Down 42.3 225.0 Up 11:50:14 - 12:20:14 -3975
PNWRO 12:05:08 -15.0 AT Down 40.9 227.3 Up 11:50:08 - 12:20:08 -3984
Maupin 12:05:14 -16.7 AT Down 42.6 225.4 Up 11:50:14 - 12:20:14 -4017
Sisters 12:05:16 -17.4 AT Down 43.5 225.4 Up 11:50:16 - 12:20:16 -4090
Bend 12:05:14 -17.3 AT Down 43.5 225.8 Up 11:50:14 - 12:20:14 -4118
Oregon Observatory 12:05:15 -17.4 AT Down 43.7 225.8 Up 11:50:15 - 12:20:15 -4132
North Lake 12:05:13 -17.3 AT Down 43.8 226.9 Up 11:50:13 - 12:20:13 -4206
Chiloquin 12:05:16 -18.3 Dark Down 44.8 226.2 Up 11:50:16 - 12:20:16 -4249
Klamath Falls 12:05:16 -18.3 Dark Down 45.0 226.6 Up 11:50:16 - 12:20:16 -4285
Lakeview 12:05:11 -17.4 AT Down 44.3 228.3 Up 11:50:11 - 12:20:11 -4321
Cedarville 12:05:10 -17.5 AT Down 44.6 228.9 Up 11:50:10 - 12:20:10 -4389
Fall River/Burney 12:05:14 -18.6 Dark Down 45.6 227.9 Up 11:50:14 - 12:20:14 -4409
Susanville 12:05:12 -18.3 Dark Down 45.6 229.2 Up 11:50:12 - 12:20:12 -4488
Greenville 12:05:13 -18.6 Dark Down 45.9 229.1 Up 11:50:13 - 12:20:13 -4508
Gimple 12:05:13 -18.5 Dark Down 45.9 229.2 Up 11:50:13 - 12:20:13 -4510
Quincy 12:05:13 -18.7 Dark Down 46.1 229.3 Up 11:50:13 - 12:20:13 -4528
Portola 12:05:11 -18.4 Dark Down 45.9 229.9 Up 11:50:11 - 12:20:11 -4552
Reno 12:05:10 -18.0 Dark Down 45.7 230.9 Up 11:50:10 - 12:20:10 -4593
Carson City 12:05:09 -18.1 Dark Down 45.9 231.2 Up 11:50:09 - 12:20:09 -4630
Gardnerville 12:05:09 -18.2 Dark Down 46.0 231.4 Up 11:50:09 - 12:20:09 -4655
Yerington 12:05:07 -17.8 AT Down 45.6 232.0 Up 11:50:07 - 12:20:07 -4664
Hawthorne 12:05:05 -17.5 AT Down 45.6 233.0 Up 11:50:05 - 12:20:05 -4722
Lee Vining 12:05:07 -18.1 Dark Down 46.2 232.9 Up 11:50:07 - 12:20:07 -4768
Tonopah 12:05:01 -16.7 AT Down 45.0 234.9 Up 11:50:01 - 12:20:01 -4801
Dunrhomin 12:04:26 -7.2 NT Down 35.9 244.8 Up 11:49:26 - 12:19:26 -4806
CU-SBO 12:04:27 -7.3 NT Down 36.1 244.9 Up 11:49:27 - 12:19:27 -4830
Bishop 12:05:05 -17.8 AT Down 46.1 234.2 Up 11:50:05 - 12:20:05 -4845
Beatty 12:05:00 -16.7 AT Down 45.3 236.3 Up 11:50:00 - 12:20:00 -4930
Indian Springs 12:04:56 -16.0 AT Down 44.8 237.7 Up 11:49:56 - 12:19:56 -4987
Henderson 12:04:54 -15.6 AT Down 44.6 238.9 Up 11:49:54 - 12:19:54 -5058
Patrick 12:04:50 -15.0 AT Down 44.1 240.5 Up 11:49:50 - 12:19:50 -5146
Laughlin/Bullhead City 12:04:53 -15.6 AT Down 44.8 240.0 Up 11:49:53 - 12:19:53 -5157
Kingman/Dolan Springs 12:04:51 -15.2 AT Down 44.4 240.5 Up 11:49:51 - 12:19:51 -5165
Wildwood 12:05:06 -19.0 Dark Down 48.1 236.9 Up 11:50:06 - 12:20:06 -5175
Mohave Valley 12:04:52 -15.7 AT Down 44.9 240.2 Up 11:49:52 - 12:19:52 -5185
Lake Havasu City 12:04:52 -15.6 AT Down 44.9 240.8 Up 11:49:52 - 12:19:52 -5232
Idyllwild 12:05:00 -17.7 AT Down 47.0 239.2 Up 11:50:00 - 12:20:00 -5257
Parker 12:04:52 -15.7 AT Down 45.1 241.2 Up 11:49:52 - 12:19:52 -5269
Calipatria 12:04:56 -16.9 AT Down 46.4 240.9 Up 11:49:56 - 12:19:56 -5348
George/Scottsdale 12:04:44 -13.9 AT Down 43.5 243.8 Up 11:49:44 - 12:19:44 -5366
Yuma 12:04:53 -16.3 AT Down 46.0 242.1 Up 11:49:53 - 12:19:53 -5414

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 612237, (2024/09/11 12:08UT)
Object            RA         Dec     mag  sep  mel
6Bet Ari       01:54:38.6 +20:48:26  2.6 16.78 132
80 Psc         01:08:21.8 +05:38:55  5.5  2.49 115
PPM 144454     01:17:35.7 +05:53:03  8.1  0.74 118
PPM 144439     01:16:55.3 +06:48:43  9.6  0.25 118
612237         01:17:35.9 +06:37:21 15.6       118
Positions are for J2000

Event circumstances last updated at 2022/05/03 23:41:27 UT

Marc W. Buie, Southwest Research Institute

RECON