RECON: TNO occultation with 463368

Event between (463368) 12VU85 and star GA1040:02481917 with event index number of 2279183

Geocentric closest approach at 2025/03/05 03:32:06 UTC

J2000 position of star is 06:55:56.4 +14:08:51
Equinox of date position of star is 06:57:12.1 +14:07:02
Stellar brightness G=15.9, 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 33% illuminated.
TNO apparent brightness V=20.9

[RECON map]
TNO is 22.1 AU from the Sun and 21.6 AU from the Earth.
The TNO is moving 8.7 km/sec on the sky relative to the star, or, 2.0 arcsec/hr.
The 1-sigma error in the time of the event is 1011 seconds.
The 1-sigma cross-track error in the shadow position is 3270 km.
The sky-plane scale is 15656.2 km/arcsec.

The TNO has an absolute magnitude Hv=7.3
Diameter=208.9 km assuming a 5% albedo -- 24.1 sec chord
Diameter=85.3 km assuming a 30% albedo -- 9.9 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 463368, (2025/03/05 03:32UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:56:32.1 +07:24:35  0.4 16.37  39
Alhena         06:39:09.9 +16:22:32  1.9  4.94  46
38 Gem         06:56:03.8 +13:08:38  5.0  1.02  51
PPM 123284     06:58:04.9 +13:59:42  8.4  0.21  51
PPM 123256     06:56:36.2 +14:11:40  9.4  0.20  50
463368         06:57:22.0 +14:06:47 15.9        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 0.9 sigma about the mid-time.
The median site spacing is 26.5 km RECON observability=1.0 and success probability=6.8%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Sleaford 03:33:55 -25.5 Dark Up 51.7 190.5 Up 03:18:55 - 03:48:55 7329
Kamloops 03:35:34 -17.6 AT Up 53.0 168.2 Up 03:20:34 - 03:50:34 6858
Kelowna 03:35:24 -18.4 Dark Up 53.9 169.3 Up 03:20:24 - 03:50:24 6807
Peachland 03:35:28 -18.2 Dark Up 54.0 168.8 Up 03:20:28 - 03:50:28 6791
Summerland 03:35:26 -18.3 Dark Up 54.1 168.9 Up 03:20:26 - 03:50:26 6780
Penticton 03:35:25 -18.4 Dark Up 54.2 169.1 Up 03:20:25 - 03:50:25 6777
Oliver 03:35:24 -18.4 Dark Up 54.6 169.0 Up 03:20:24 - 03:50:24 6745
Anarchist Mountain Observatory 03:35:22 -18.6 Dark Up 54.7 169.3 Up 03:20:22 - 03:50:22 6735
Tonasket 03:35:22 -18.6 Dark Up 55.0 169.1 Up 03:20:22 - 03:50:22 6706
Okanogan 03:35:22 -18.6 Dark Up 55.4 168.7 Up 03:20:22 - 03:50:22 6672
Brewster 03:35:23 -18.5 Dark Up 55.6 168.3 Up 03:20:23 - 03:50:23 6643
Manson/Chelan 03:35:26 -18.3 Dark Up 55.7 167.6 Up 03:20:26 - 03:50:26 6615
Victoria 03:35:53 -16.2 AT Up 54.6 162.6 Up 03:20:53 - 03:50:53 6596
Wenatchee 03:35:25 -18.3 Dark Up 56.2 167.2 Up 03:20:25 - 03:50:25 6568
Ellensburg 03:35:26 -18.2 Dark Up 56.6 166.7 Up 03:20:26 - 03:50:26 6525
Yakima 03:35:26 -18.3 Dark Up 56.9 166.5 Up 03:20:26 - 03:50:26 6488
PNWRO 03:35:09 -19.5 Dark Up 57.8 169.1 Up 03:20:09 - 03:50:09 6476
Toppenish/White Swan 03:35:24 -18.5 Dark Up 57.2 166.7 Up 03:20:24 - 03:50:24 6472
Goldendale 03:35:26 -18.3 Dark Up 57.6 165.8 Up 03:20:26 - 03:50:26 6411
The Dalles 03:35:29 -18.1 Dark Up 57.8 165.0 Up 03:20:29 - 03:50:29 6381
Dunrhomin 03:33:14 -30.4 Dark Up 63.1 195.8 Up 03:18:14 - 03:48:14 6354
Maupin 03:35:26 -18.2 Dark Up 58.2 165.0 Up 03:20:26 - 03:50:26 6345
CU-SBO 03:33:14 -30.4 Dark Up 63.4 195.7 Up 03:18:14 - 03:48:14 6328
Sisters 03:35:27 -18.0 Dark Up 59.0 163.7 Up 03:20:27 - 03:50:27 6250
Bend 03:35:24 -18.2 Dark Up 59.3 164.1 Up 03:20:24 - 03:50:24 6235
Oregon Observatory 03:35:25 -18.2 Dark Up 59.4 163.8 Up 03:20:25 - 03:50:25 6215
North Lake 03:35:17 -18.7 Dark Up 60.1 164.4 Up 03:20:17 - 03:50:17 6169
Lakeview 03:35:12 -19.2 Dark Up 61.2 165.0 Up 03:20:12 - 03:50:12 6083
Chiloquin 03:35:26 -18.1 Dark Up 60.6 162.3 Up 03:20:26 - 03:50:26 6080
Klamath Falls 03:35:24 -18.2 Dark Up 60.9 162.3 Up 03:20:24 - 03:50:24 6049
Cedarville 03:35:09 -19.4 Dark Up 61.9 165.0 Up 03:20:09 - 03:50:09 6025
Fall River/Burney 03:35:17 -18.6 Dark Up 62.1 162.3 Up 03:20:17 - 03:50:17 5946
Susanville 03:35:07 -19.3 Dark Up 62.9 163.4 Up 03:20:07 - 03:50:07 5905
Gimple 03:35:10 -19.1 Dark Up 63.1 162.8 Up 03:20:10 - 03:50:10 5872
Greenville 03:35:10 -19.1 Dark Up 63.1 162.7 Up 03:20:10 - 03:50:10 5870
Portola 03:35:05 -19.5 Dark Up 63.5 163.4 Up 03:20:05 - 03:50:05 5852
Quincy 03:35:10 -19.1 Dark Up 63.3 162.5 Up 03:20:10 - 03:50:10 5851
Reno 03:34:56 -20.0 Dark Up 63.9 164.6 Up 03:19:56 - 03:49:56 5844
Carson City 03:34:56 -20.1 Dark Up 64.2 164.4 Up 03:19:56 - 03:49:56 5810
Yerington 03:34:52 -20.6 Dark Up 64.5 165.7 Up 03:19:52 - 03:49:52 5808
Gardnerville 03:34:56 -20.1 Dark Up 64.5 164.4 Up 03:19:56 - 03:49:56 5787
Hawthorne 03:34:45 -21.0 Dark Up 65.1 166.6 Up 03:19:45 - 03:49:45 5778
Tonopah 03:34:31 -22.2 Dark Up 65.8 169.5 Up 03:19:31 - 03:49:31 5774
Lee Vining 03:34:46 -20.7 Dark Up 65.5 165.2 Up 03:19:46 - 03:49:46 5710
Indian Springs 03:34:10 -23.6 Dark Up 67.4 172.5 Up 03:19:10 - 03:49:10 5675
Beatty 03:34:20 -22.7 Dark Up 67.0 170.0 Up 03:19:20 - 03:49:20 5675
Bishop 03:34:38 -21.4 Dark Up 66.3 166.5 Up 03:19:38 - 03:49:38 5672
Henderson 03:34:01 -24.2 Dark Up 68.0 174.0 Up 03:19:01 - 03:49:01 5644
Patrick 03:33:49 -25.1 Dark Up 68.7 176.7 Up 03:18:49 - 03:48:49 5618
Kingman/Dolan Springs 03:33:48 -25.0 Dark Up 68.9 176.1 Up 03:18:48 - 03:48:48 5590
Laughlin/Bullhead City 03:33:53 -24.6 Dark Up 68.9 174.8 Up 03:18:53 - 03:48:53 5572
Mohave Valley 03:33:53 -24.7 Dark Up 69.2 174.7 Up 03:18:53 - 03:48:53 5545
George/Scottsdale 03:33:21 -27.0 Dark Up 70.4 181.9 Up 03:18:21 - 03:48:21 5517
Lake Havasu City 03:33:49 -24.9 Dark Up 69.6 175.3 Up 03:18:49 - 03:48:49 5514
Parker 03:33:48 -25.0 Dark Up 69.9 175.2 Up 03:18:48 - 03:48:48 5480
Idyllwild 03:34:10 -23.2 Dark Up 70.1 168.5 Up 03:19:10 - 03:49:10 5364
Wildwood 03:34:30 -21.7 Dark Up 69.4 163.8 Up 03:19:30 - 03:49:30 5342
Calipatria 03:33:56 -24.2 Dark Up 70.8 171.5 Up 03:18:56 - 03:48:56 5340
Yuma 03:33:44 -25.0 Dark Up 71.4 173.8 Up 03:18:44 - 03:48:44 5326

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 463368, (2025/03/05 03:32UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:55:10.3 +07:24:26  0.4 16.37  39
Alhena         06:37:42.8 +16:23:57  1.9  4.94  46
38 Gem         06:54:38.7 +13:10:38  5.0  1.02  51
PPM 123284     06:56:39.3 +14:01:47  8.4  0.21  51
PPM 123256     06:55:10.5 +14:13:42  9.4  0.20  50
463368         06:55:56.4 +14:08:51 15.9        51
Positions are for J2000

Event circumstances last updated at 2022/04/05 23:16:05 UT

Marc W. Buie, Southwest Research Institute

RECON