RECON: TNO occultation with 468861

Event between (468861) 13LU28 and star GA0960:00763676 with event index number of 2656121

Geocentric closest approach at 2027/01/21 02:54:08 UTC

J2000 position of star is 05:27:50.6 +07:12:31
Equinox of date position of star is 05:29:03.1 +07:13:33
Stellar brightness G=13.6, use SENSEUP=64 with the MallinCam and and exposure time of 1 seconds with the QHY174 camera.
Star is 27 degrees from the moon. Moon is 97% illuminated.
TNO apparent brightness V=18.7

[RECON map]
TNO is 10.2 AU from the Sun and 9.5 AU from the Earth.
The TNO is moving 31.0 km/sec on the sky relative to the star, or, 16.3 arcsec/hr.
The 1-sigma error in the time of the event is 39 seconds.
The 1-sigma cross-track error in the shadow position is 5323 km.
The sky-plane scale is 6854.6 km/arcsec.

The TNO has an absolute magnitude Hv=8.4
Diameter=128.2 km assuming a 5% albedo -- 4.1 sec chord
Diameter=52.4 km assuming a 30% albedo -- 1.7 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 468861, (2027/01/21 02:54UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:56:38.2 +07:24:35  0.4  6.78  23
Bellatrix      05:26:35.0 +06:22:19  1.6  1.09  28
PPM 148951     05:28:06.3 +06:53:23  6.5  0.45  28
PPM 148965     05:28:27.7 +07:11:28  7.0  0.21  27
468861         05:29:18.4 +07:13:46 13.6        27
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 5.0 sigma about the mid-time.
The median site spacing is 21.1 km RECON observability=1.0 and success probability=6.7%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kamloops 02:55:01 -22.0 Dark Up 36.2 130.4 Up 02:51:14 - 02:58:48 5563
Kelowna 02:55:01 -22.5 Dark Up 37.1 130.9 Up 02:51:14 - 02:58:48 5493
Peachland 02:55:02 -22.3 Dark Up 37.1 130.5 Up 02:51:15 - 02:58:49 5491
Summerland 02:55:02 -22.3 Dark Up 37.2 130.5 Up 02:51:15 - 02:58:49 5479
Penticton 02:55:02 -22.4 Dark Up 37.3 130.6 Up 02:51:15 - 02:58:49 5472
Victoria 02:55:11 -19.8 Dark Up 36.0 125.9 Up 02:51:24 - 02:58:58 5466
Oliver 02:55:03 -22.3 Dark Up 37.5 130.4 Up 02:51:16 - 02:58:50 5448
Anarchist Mountain Observatory 02:55:03 -22.5 Dark Up 37.8 130.5 Up 02:51:16 - 02:58:50 5433
Sleaford 02:54:32 -30.9 Dark Up 41.0 147.7 Up 02:50:45 - 02:58:19 5432
Tonasket 02:55:04 -22.4 Dark Up 37.9 130.2 Up 02:51:17 - 02:58:51 5413
Okanogan 02:55:05 -22.3 Dark Up 38.1 129.9 Up 02:51:18 - 02:58:52 5391
Brewster 02:55:06 -22.1 Dark Up 38.1 129.5 Up 02:51:19 - 02:58:53 5376
Manson/Chelan 02:55:07 -21.8 Dark Up 38.1 129.0 Up 02:51:20 - 02:58:54 5367
Wenatchee 02:55:08 -21.7 Dark Up 38.3 128.5 Up 02:51:21 - 02:58:55 5336
Ellensburg 02:55:09 -21.5 Dark Up 38.4 128.0 Up 02:51:22 - 02:58:56 5310
Yakima 02:55:10 -21.4 Dark Up 38.7 127.8 Up 02:51:23 - 02:58:57 5281
Toppenish/White Swan 02:55:11 -21.5 Dark Up 38.9 127.8 Up 02:51:24 - 02:58:58 5262
Goldendale 02:55:12 -21.2 Dark Up 39.0 127.0 Up 02:51:25 - 02:58:59 5229
The Dalles 02:55:13 -20.9 Dark Up 38.9 126.5 Up 02:51:26 - 02:59:00 5219
PNWRO 02:55:08 -22.5 Dark Up 39.9 129.2 Up 02:51:21 - 02:58:55 5209
Maupin 02:55:14 -20.9 Dark Up 39.2 126.3 Up 02:51:27 - 02:59:01 5186
Sisters 02:55:17 -20.4 Dark Up 39.5 125.2 Up 02:51:30 - 02:59:04 5129
Bend 02:55:17 -20.6 Dark Up 39.8 125.3 Up 02:51:30 - 02:59:04 5107
Oregon Observatory 02:55:18 -20.5 Dark Up 39.8 125.1 Up 02:51:31 - 02:59:05 5096
North Lake 02:55:18 -20.8 Dark Up 40.5 125.2 Up 02:51:31 - 02:59:05 5037
Chiloquin 02:55:21 -20.0 Dark Up 40.3 123.7 Up 02:51:34 - 02:59:08 5003
Klamath Falls 02:55:22 -20.0 Dark Up 40.5 123.6 Up 02:51:35 - 02:59:09 4974
Lakeview 02:55:19 -21.0 Dark Up 41.4 125.0 Up 02:51:32 - 02:59:06 4945
Cedarville 02:55:20 -21.1 Dark Up 41.9 124.7 Up 02:51:33 - 02:59:07 4890
Fall River/Burney 02:55:23 -20.1 Dark Up 41.4 123.1 Up 02:51:36 - 02:59:10 4874
Susanville 02:55:23 -20.5 Dark Up 42.3 123.4 Up 02:51:36 - 02:59:10 4809
Greenville 02:55:24 -20.3 Dark Up 42.2 122.9 Up 02:51:37 - 02:59:11 4793
Gimple 02:55:24 -20.3 Dark Up 42.3 123.0 Up 02:51:37 - 02:59:11 4791
Quincy 02:55:24 -20.2 Dark Up 42.3 122.8 Up 02:51:37 - 02:59:11 4776
Portola 02:55:24 -20.6 Dark Up 42.7 123.2 Up 02:51:37 - 02:59:11 4757
Reno 02:55:23 -21.0 Dark Up 43.3 123.6 Up 02:51:36 - 02:59:10 4723
Carson City 02:55:24 -21.0 Dark Up 43.5 123.4 Up 02:51:37 - 02:59:11 4693
Gardnerville 02:55:24 -21.0 Dark Up 43.6 123.2 Up 02:51:37 - 02:59:11 4671
Yerington 02:55:23 -21.4 Dark Up 44.0 123.9 Up 02:51:36 - 02:59:10 4664
Hawthorne 02:55:22 -21.8 Dark Up 44.6 124.0 Up 02:51:35 - 02:59:09 4615
Lee Vining 02:55:24 -21.3 Dark Up 44.6 123.1 Up 02:51:37 - 02:59:11 4578
Tonopah 02:55:20 -22.8 Dark Up 45.8 125.2 Up 02:51:33 - 02:59:07 4548
Bishop 02:55:24 -21.8 Dark Up 45.4 123.3 Up 02:51:37 - 02:59:11 4512
Dunrhomin 02:54:49 -32.2 Dark Up 51.0 141.7 Up 02:51:02 - 02:58:36 4500
CU-SBO 02:54:49 -32.1 Dark Up 51.2 141.3 Up 02:51:02 - 02:58:36 4481
Beatty 02:55:21 -23.0 Dark Up 46.7 124.7 Up 02:51:34 - 02:59:08 4440
Indian Springs 02:55:19 -23.8 Dark Up 47.6 125.6 Up 02:51:32 - 02:59:06 4390
Henderson 02:55:19 -24.3 Dark Up 48.4 125.8 Up 02:51:32 - 02:59:06 4329
Patrick 02:55:17 -25.1 Dark Up 49.5 126.5 Up 02:51:30 - 02:59:04 4251
Laughlin/Bullhead City 02:55:20 -24.5 Dark Up 49.2 125.5 Up 02:51:33 - 02:59:07 4244
Kingman/Dolan Springs 02:55:18 -24.9 Dark Up 49.5 126.1 Up 02:51:31 - 02:59:05 4235
Wildwood 02:55:30 -21.1 Dark Up 47.0 120.2 Up 02:51:43 - 02:59:17 4232
Mohave Valley 02:55:20 -24.5 Dark Up 49.3 125.2 Up 02:51:33 - 02:59:07 4219
Lake Havasu City 02:55:20 -24.6 Dark Up 49.7 125.1 Up 02:51:33 - 02:59:07 4178
Idyllwild 02:55:27 -22.6 Dark Up 48.5 121.8 Up 02:51:40 - 02:59:14 4161
Parker 02:55:20 -24.6 Dark Up 50.0 124.8 Up 02:51:33 - 02:59:07 4146
Calipatria 02:55:25 -23.4 Dark Up 49.7 122.5 Up 02:51:38 - 02:59:12 4081
George/Scottsdale 02:55:15 -26.5 Dark Up 51.8 127.2 Up 02:51:28 - 02:59:02 4057
Yuma 02:55:23 -24.1 Dark Up 50.5 123.0 Up 02:51:36 - 02:59:10 4022

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 468861, (2027/01/21 02:54UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:55:10.3 +07:24:26  0.4  6.78  23
Bellatrix      05:25:07.8 +06:20:58  1.6  1.09  28
PPM 148951     05:26:38.8 +06:52:06  6.5  0.45  28
PPM 148965     05:27:00.0 +07:10:12  7.0  0.21  27
468861         05:27:50.6 +07:12:31 13.6        27
Positions are for J2000

Event circumstances last updated at 2022/05/05 23:17:53 UT

Marc W. Buie, Southwest Research Institute

RECON