RECON: TNO occultation with 463368

Event between (463368) 12VU85 and star GA1020:02495386 with event index number of 2279168

Geocentric closest approach at 2025/01/27 07:22:48 UTC

J2000 position of star is 06:59:33.3 +13:58:45
Equinox of date position of star is 07:00:56.3 +13:56:38
Stellar brightness G=17.0, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 165 degrees from the moon. Moon is 6% illuminated.
Apparent brightness V=20.8

[RECON map]
Object is 22.1 AU from the Sun and 21.2 AU from the Earth.
Apparent velocity is 21.3 km/sec on the sky relative to the star, or, 5.0 arcsec/hr.
The 1-sigma error in the time of the event is 429 seconds.
The 1-sigma cross-track error in the shadow position is 3211 km.
The sky-plane scale is 15383.4 km/arcsec.

The object has an absolute magnitude Hv=7.3
Diameter=208.9 km assuming a 5% albedo -- 9.8 sec chord
Diameter=85.3 km assuming a 30% albedo -- 4.0 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 463368, (2025/01/27 07:23UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:56:31.8 +07:24:35  0.4 17.12 156
Alhena         06:39:09.6 +16:22:33  1.9  5.80 168
38 Gem         06:56:03.4 +13:08:38  5.0  1.44 165
PPM 123359     07:00:53.6 +14:17:25  8.2  0.35 166
PPM 123370     07:01:32.8 +13:51:17  9.7  0.16 165
463368         07:00:58.4 +13:56:35 17.0       165
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 2.1 sigma about the mid-time.
The median site spacing is 30.9 km RECON observability=1.0 and success probability=9.7%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Sleaford 07:21:48 -56.3 Dark Down 46.4 218.9 Up 07:06:48 - 07:36:48 5727
Kamloops 07:22:29 -56.1 Dark Down 52.0 199.4 Up 07:07:29 - 07:37:29 5425
Kelowna 07:22:25 -57.1 Dark Down 52.6 201.2 Up 07:07:25 - 07:37:25 5364
Peachland 07:22:26 -57.1 Dark Down 52.7 200.8 Up 07:07:26 - 07:37:26 5351
Summerland 07:22:25 -57.3 Dark Down 52.9 201.0 Up 07:07:25 - 07:37:25 5340
Penticton 07:22:25 -57.3 Dark Down 52.9 201.2 Up 07:07:25 - 07:37:25 5335
Oliver 07:22:24 -57.7 Dark Down 53.2 201.4 Up 07:07:24 - 07:37:24 5304
Anarchist Mountain Observatory 07:22:23 -57.9 Dark Down 53.3 201.7 Up 07:07:23 - 07:37:23 5292
Okanogan 07:22:23 -58.4 Dark Down 54.0 201.7 Up 07:07:23 - 07:37:23 5232
Brewster 07:22:24 -58.6 Dark Down 54.3 201.5 Up 07:07:24 - 07:37:24 5205
Victoria 07:22:37 -57.2 Dark Down 54.6 195.5 Up 07:07:37 - 07:37:37 5202
Manson/Chelan 07:22:25 -58.7 Dark Down 54.6 201.0 Up 07:07:25 - 07:37:25 5182
Wenatchee 07:22:24 -59.1 Dark Down 55.1 201.0 Up 07:07:24 - 07:37:24 5138
Ellensburg 07:22:25 -59.4 Dark Down 55.5 200.9 Up 07:07:25 - 07:37:25 5098
Yakima 07:22:24 -59.8 Dark Down 55.9 201.0 Up 07:07:24 - 07:37:24 5061
Toppenish/White Swan 07:22:24 -60.0 Dark Down 56.0 201.4 Up 07:07:24 - 07:37:24 5043
PNWRO 07:22:18 -60.8 Dark Down 56.0 204.1 Up 07:07:18 - 07:37:18 5028
The Dalles 07:22:25 -60.5 Dark Down 57.0 200.5 Up 07:07:25 - 07:37:25 4962
Maupin 07:22:25 -60.9 Dark Down 57.3 200.9 Up 07:07:25 - 07:37:25 4925
Sisters 07:22:25 -61.5 Dark Down 58.3 200.6 Up 07:07:25 - 07:37:25 4838
Bend 07:22:24 -61.8 Dark Down 58.4 201.2 Up 07:07:24 - 07:37:24 4819
Oregon Observatory 07:22:24 -61.9 Dark Down 58.6 201.0 Up 07:07:24 - 07:37:24 4801
Dunrhomin 07:21:20 -68.0 Dark Down 54.6 229.8 Up 07:06:20 - 07:36:20 4707
Nikitin 07:21:20 -68.2 Dark Down 54.7 230.0 Up 07:06:20 - 07:36:20 4689
CU-SBO 07:21:20 -68.3 Dark Down 54.8 229.9 Up 07:06:20 - 07:36:20 4682
Chiloquin 07:22:24 -62.9 Dark Down 60.0 201.1 Up 07:07:24 - 07:37:24 4671
Klamath Falls 07:22:24 -63.2 Dark Down 60.3 201.4 Up 07:07:24 - 07:37:24 4640
Cedarville 07:22:17 -64.4 Dark Down 60.4 204.9 Up 07:07:17 - 07:37:17 4594
Fall River/Burney 07:22:21 -64.4 Dark Down 61.2 202.9 Up 07:07:21 - 07:37:21 4531
Gimple 07:22:18 -65.3 Dark Down 61.9 204.6 Up 07:07:18 - 07:37:18 4450
Greenville 07:22:18 -65.3 Dark Down 61.9 204.4 Up 07:07:18 - 07:37:18 4450
Quincy 07:22:18 -65.5 Dark Down 62.1 204.6 Up 07:07:18 - 07:37:18 4430
Portola 07:22:15 -65.8 Dark Down 62.1 205.6 Up 07:07:15 - 07:37:15 4424
Reno 07:22:13 -66.2 Dark Down 62.1 207.1 Up 07:07:13 - 07:37:13 4407
Carson City 07:22:13 -66.6 Dark Down 62.4 207.4 Up 07:07:13 - 07:37:13 4373
Yerington 07:22:10 -67.0 Dark Down 62.4 208.8 Up 07:07:10 - 07:37:10 4362
Gardnerville 07:22:12 -66.8 Dark Down 62.6 207.7 Up 07:07:12 - 07:37:12 4349
Hawthorne 07:22:07 -67.6 Dark Down 62.6 210.3 Up 07:07:07 - 07:37:07 4324
Lee Vining 07:22:08 -67.9 Dark Down 63.3 209.9 Up 07:07:08 - 07:37:08 4262
Bishop 07:22:05 -68.7 Dark Down 63.5 211.9 Up 07:07:05 - 07:37:05 4213
Beatty 07:21:58 -69.7 Dark Down 63.1 215.5 Up 07:06:58 - 07:36:58 4192
Patrick 07:21:44 -72.0 Dark Down 62.9 222.5 Up 07:06:44 - 07:36:44 4090
Laughlin/Bullhead City 07:21:47 -72.0 Dark Down 63.4 221.6 Up 07:06:47 - 07:36:47 4054
Lake Havasu City 07:21:45 -72.7 Dark Down 63.8 222.9 Up 07:06:45 - 07:36:45 3990
George/Scottsdale 07:21:34 -74.1 Dark Down 62.9 228.2 Up 07:06:34 - 07:36:34 3954
Wildwood 07:22:02 -71.3 Dark Down 66.3 215.3 Up 07:07:02 - 07:37:02 3882
Idyllwild 07:21:53 -72.5 Dark Down 65.6 219.6 Up 07:06:53 - 07:36:53 3875
Calipatria 07:21:48 -73.5 Dark Down 65.5 222.7 Up 07:06:48 - 07:36:48 3832
Yuma 07:21:44 -74.2 Dark Down 65.3 225.0 Up 07:06:44 - 07:36:44 3803

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, (2025/01/27 07:23UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:55:10.3 +07:24:26  0.4 17.12 156
Alhena         06:37:42.8 +16:23:57  1.9  5.80 168
38 Gem         06:54:38.7 +13:10:38  5.0  1.44 165
PPM 123359     06:59:28.2 +14:19:35  8.2  0.35 166
PPM 123370     07:00:07.7 +13:53:29  9.7  0.16 165
463368         06:59:33.3 +13:58:45 17.0       165
Positions are for J2000

Event circumstances last updated at 2024/06/12 03:42:32 UT

Marc W. Buie, Southwest Research Institute

RECON