RECON: TNO occultation with 10VE253

Event between 10VE253 and star GA1160:02956168 with event index number of 2106444

Geocentric closest approach at 2027/02/04 05:38:00 UTC

J2000 position of star is 07:56:29.6 +26:43:10
Equinox of date position of star is 07:57:51.4 +26:39:31
Stellar brightness G=15.4, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 172 degrees from the moon. Moon is 5% illuminated.
TNO apparent brightness V=23.6

[RECON map]
TNO is 22.7 AU from the Sun and 21.7 AU from the Earth.
The TNO is moving 22.2 km/sec on the sky relative to the star, or, 5.1 arcsec/hr.
The 1-sigma error in the time of the event is 320 seconds.
The 1-sigma cross-track error in the shadow position is 2652 km.
The sky-plane scale is 15764.5 km/arcsec.

The TNO has an absolute magnitude Hv=10.0
Diameter=61.1 km assuming a 5% albedo -- 2.7 sec chord
Diameter=24.9 km assuming a 30% albedo -- 1.1 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 10VE253, (2027/02/04 05:38UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:46:58.5 +27:57:31  1.1  2.81 174
83Phi Gem      07:55:09.1 +26:41:36  5.0  0.67 173
PPM 098092     07:55:24.6 +26:29:27  8.1  0.63 173
PPM 098120     07:56:48.1 +27:00:24  9.1  0.47 172
PPM 098141     07:57:47.6 +26:33:13 10.8  0.12 172
10VE253        07:58:08.8 +26:38:44 15.4       172
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 2.8 sigma about the mid-time.
The median site spacing is 31.9 km RECON observability=1.0 and success probability=19.9%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Sleaford 05:38:36 -49.2 Dark Down 64.2 167.1 Up 05:23:36 - 05:53:36 -652
Kamloops 05:39:20 -43.6 Dark Down 61.4 139.2 Up 05:24:20 - 05:54:20 -812
Kelowna 05:39:18 -44.5 Dark Down 62.4 139.7 Up 05:24:18 - 05:54:18 -897
Peachland 05:39:19 -44.4 Dark Down 62.4 139.1 Up 05:24:19 - 05:54:19 -908
Summerland 05:39:18 -44.6 Dark Down 62.5 139.0 Up 05:24:18 - 05:54:18 -924
Penticton 05:39:18 -44.7 Dark Down 62.6 139.2 Up 05:24:18 - 05:54:18 -931
Oliver 05:39:18 -44.9 Dark Down 62.9 138.7 Up 05:24:18 - 05:54:18 -967
Anarchist Mountain Observatory 05:39:18 -45.1 Dark Down 63.1 138.8 Up 05:24:18 - 05:54:18 -985
Tonasket 05:39:18 -45.2 Dark Down 63.3 138.3 Up 05:24:18 - 05:54:18 -1017
Victoria 05:39:31 -43.0 Dark Down 61.6 131.6 Up 05:24:31 - 05:54:31 -1022
Okanogan 05:39:19 -45.3 Dark Down 63.5 137.6 Up 05:24:19 - 05:54:19 -1052
Brewster 05:39:19 -45.3 Dark Down 63.6 136.9 Up 05:24:19 - 05:54:19 -1079
Manson/Chelan 05:39:21 -45.2 Dark Down 63.6 136.0 Up 05:24:21 - 05:54:21 -1100
Wenatchee 05:39:22 -45.4 Dark Down 63.8 135.0 Up 05:24:22 - 05:54:22 -1149
Ellensburg 05:39:23 -45.5 Dark Down 64.0 134.0 Up 05:24:23 - 05:54:23 -1192
Yakima 05:39:23 -45.7 Dark Down 64.3 133.4 Up 05:24:23 - 05:54:23 -1234
Toppenish/White Swan 05:39:23 -45.9 Dark Down 64.5 133.4 Up 05:24:23 - 05:54:23 -1257
PNWRO 05:39:18 -46.9 Dark Down 65.5 135.4 Up 05:24:18 - 05:54:18 -1300
Goldendale 05:39:25 -45.9 Dark Down 64.7 131.8 Up 05:24:25 - 05:54:25 -1314
The Dalles 05:39:26 -45.8 Dark Down 64.6 130.8 Up 05:24:26 - 05:54:26 -1337
Maupin 05:39:26 -46.0 Dark Down 65.0 130.3 Up 05:24:26 - 05:54:26 -1381
Sisters 05:39:28 -46.1 Dark Down 65.3 128.0 Up 05:24:28 - 05:54:28 -1473
Bend 05:39:28 -46.4 Dark Down 65.5 128.0 Up 05:24:28 - 05:54:28 -1499
Oregon Observatory 05:39:28 -46.4 Dark Down 65.6 127.5 Up 05:24:28 - 05:54:28 -1517
North Lake 05:39:27 -47.0 Dark Down 66.3 127.3 Up 05:24:27 - 05:54:27 -1587
Chiloquin 05:39:30 -46.7 Dark Down 66.1 124.5 Up 05:24:30 - 05:54:30 -1656
Klamath Falls 05:39:30 -46.9 Dark Down 66.4 124.0 Up 05:24:30 - 05:54:30 -1693
Lakeview 05:39:26 -47.9 Dark Down 67.2 126.3 Up 05:24:26 - 05:54:26 -1702
Cedarville 05:39:25 -48.3 Dark Down 67.7 125.3 Up 05:24:25 - 05:54:25 -1773
Fall River/Burney 05:39:30 -47.6 Dark Down 67.2 122.3 Up 05:24:30 - 05:54:30 -1821
Dunrhomin 05:38:31 -58.3 Dark Down 75.7 159.7 Up 05:23:31 - 05:53:31 -1886
Susanville 05:39:28 -48.4 Dark Down 68.0 122.2 Up 05:24:28 - 05:54:28 -1892
CU-SBO 05:38:31 -58.4 Dark Down 75.9 159.0 Up 05:23:31 - 05:53:31 -1913
Greenville 05:39:29 -48.3 Dark Down 68.0 121.1 Up 05:24:29 - 05:54:29 -1921
Gimple 05:39:29 -48.4 Dark Down 68.1 121.3 Up 05:24:29 - 05:54:29 -1921
Quincy 05:39:29 -48.4 Dark Down 68.1 120.7 Up 05:24:29 - 05:54:29 -1943
Portola 05:39:27 -48.8 Dark Down 68.5 121.2 Up 05:24:27 - 05:54:27 -1958
Reno 05:39:25 -49.3 Dark Down 69.0 121.7 Up 05:24:25 - 05:54:25 -1989
Carson City 05:39:25 -49.5 Dark Down 69.2 120.9 Up 05:24:25 - 05:54:25 -2028
Yerington 05:39:23 -50.0 Dark Down 69.8 121.6 Up 05:24:23 - 05:54:23 -2051
Gardnerville 05:39:25 -49.6 Dark Down 69.4 120.5 Up 05:24:25 - 05:54:25 -2055
Hawthorne 05:39:21 -50.6 Dark Down 70.3 121.4 Up 05:24:21 - 05:54:21 -2103
Tonopah 05:39:16 -51.8 Dark Down 71.5 122.8 Up 05:24:16 - 05:54:16 -2157
Lee Vining 05:39:23 -50.4 Dark Down 70.3 119.2 Up 05:24:23 - 05:54:23 -2163
Bishop 05:39:21 -51.2 Dark Down 71.1 118.9 Up 05:24:21 - 05:54:21 -2231
Beatty 05:39:15 -52.6 Dark Down 72.4 120.6 Up 05:24:15 - 05:54:15 -2284
Indian Springs 05:39:09 -53.5 Dark Down 73.3 121.7 Up 05:24:09 - 05:54:09 -2321
Henderson 05:39:08 -54.2 Dark Down 74.1 121.6 Up 05:24:08 - 05:54:08 -2379
Patrick 05:39:04 -55.3 Dark Down 75.2 122.0 Up 05:24:04 - 05:54:04 -2447
Kingman/Dolan Springs 05:39:04 -55.2 Dark Down 75.2 120.9 Up 05:24:04 - 05:54:04 -2472
Laughlin/Bullhead City 05:39:07 -54.9 Dark Down 74.8 119.7 Up 05:24:07 - 05:54:07 -2475
Mohave Valley 05:39:07 -55.0 Dark Down 75.0 118.9 Up 05:24:07 - 05:54:07 -2505
Lake Havasu City 05:39:06 -55.3 Dark Down 75.3 118.0 Up 05:24:06 - 05:54:06 -2549
Parker 05:39:06 -55.5 Dark Down 75.5 116.9 Up 05:24:06 - 05:54:06 -2588
Wildwood 05:39:22 -52.2 Dark Down 72.3 109.6 Up 05:24:22 - 05:54:22 -2589
George/Scottsdale 05:38:56 -57.5 Dark Down 77.5 120.7 Up 05:23:56 - 05:53:56 -2631
Idyllwild 05:39:15 -53.8 Dark Down 73.9 111.3 Up 05:24:15 - 05:54:15 -2632
Calipatria 05:39:09 -54.9 Dark Down 75.0 111.1 Up 05:24:09 - 05:54:09 -2700
Yuma 05:39:07 -55.8 Dark Down 75.8 111.1 Up 05:24:07 - 05:54:07 -2748

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 10VE253, (2027/02/04 05:38UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:45:17.9 +28:01:33  1.1  2.81 174
83Phi Gem      07:53:29.7 +26:45:56  5.0  0.67 173
PPM 098092     07:53:45.4 +26:33:47  8.1  0.63 173
PPM 098120     07:55:08.6 +27:04:47  9.1  0.47 172
PPM 098141     07:56:08.5 +26:37:38 10.8  0.12 172
10VE253        07:56:29.6 +26:43:10 15.4       172
Positions are for J2000

Event circumstances last updated at 2022/04/28 23:03:19 UT

Marc W. Buie, Southwest Research Institute

RECON