RECON: TNO occultation with 04TV357

Event between 04TV357 and star GA1080:01787636 with event index number of 2366597

Geocentric closest approach at 2028/11/19 05:28:55 UTC

J2000 position of star is 06:15:59.0 +19:31:07
Equinox of date position of star is 06:17:17.5 +19:30:35
Stellar brightness G=11.7, use SENSEUP=8 with the MallinCam and and exposure time of 125 milli-seconds with the QHY174 camera.
Star is 175 degrees from the moon. Moon is 9% illuminated.
TNO apparent brightness V=22.2

[RECON map]
TNO is 34.5 AU from the Sun and 33.7 AU from the Earth.
The TNO is moving 18.8 km/sec on the sky relative to the star, or, 2.8 arcsec/hr.
The 1-sigma error in the time of the event is 601 seconds.
The 1-sigma cross-track error in the shadow position is 2543 km.
The sky-plane scale is 24439.3 km/arcsec.

The TNO has an absolute magnitude Hv=6.8
Diameter=264.2 km assuming a 5% albedo -- 14.0 sec chord
Diameter=107.9 km assuming a 30% albedo -- 5.7 sec chord
Dynamical classification is 2:1E
 
 
 
 
 
 

Star training set for 04TV357, (2028/11/19 05:29UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:56:44.2 +07:24:36  0.4 13.12 163
Alhena         06:39:22.8 +16:22:20  1.9  6.04 169
71 Ori         06:16:32.9 +19:08:39  5.6  0.45 174
PPM 122177     06:17:11.6 +19:30:40  8.5  0.12 175
PPM 122200     06:17:59.7 +19:35:25  9.6  0.11 175
04TV357        06:17:41.4 +19:30:25 11.7       175
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 1.5 sigma about the mid-time.
The median site spacing is 24.5 km RECON observability=1.0 and success probability=15.3%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kamloops 05:32:01 -49.1 Dark Down 25.9 90.4 Low 05:17:01 - 05:47:01 -1190
Victoria 05:32:14 -48.7 Dark Down 23.9 87.1 Low 05:17:14 - 05:47:14 -1264
Kelowna 05:32:04 -50.1 Dark Down 26.5 90.7 Low 05:17:04 - 05:47:04 -1269
Peachland 05:32:05 -50.0 Dark Down 26.3 90.4 Low 05:17:05 - 05:47:05 -1269
Summerland 05:32:06 -50.1 Dark Down 26.4 90.4 Low 05:17:06 - 05:47:06 -1282
Penticton 05:32:06 -50.2 Dark Down 26.5 90.5 Low 05:17:06 - 05:47:06 -1289
Oliver 05:32:07 -50.4 Dark Down 26.5 90.3 Low 05:17:07 - 05:47:07 -1314
Anarchist Mountain Observatory 05:32:08 -50.6 Dark Down 26.6 90.4 Low 05:17:08 - 05:47:08 -1331
Tonasket 05:32:10 -50.8 Dark Down 26.6 90.2 Low 05:17:10 - 05:47:10 -1351
Okanogan 05:32:11 -50.9 Dark Down 26.5 89.9 Low 05:17:11 - 05:47:11 -1372
Brewster 05:32:13 -50.9 Dark Down 26.3 89.6 Low 05:17:13 - 05:47:13 -1386
Manson/Chelan 05:32:14 -50.9 Dark Down 26.1 89.3 Low 05:17:14 - 05:47:14 -1392
Wenatchee 05:32:16 -51.0 Dark Down 26.0 88.9 Low 05:17:16 - 05:47:16 -1422
Sleaford 05:31:35 -54.1 Dark Down 34.6 103.1 Up 05:16:35 - 05:46:35 -1425
Ellensburg 05:32:18 -51.2 Dark Down 25.8 88.5 Low 05:17:18 - 05:47:18 -1447
Yakima 05:32:20 -51.4 Dark Down 25.8 88.3 Low 05:17:20 - 05:47:20 -1476
Toppenish/White Swan 05:32:21 -51.6 Dark Down 25.9 88.4 Low 05:17:21 - 05:47:21 -1497
Goldendale 05:32:23 -51.6 Dark Down 25.6 87.8 Low 05:17:23 - 05:47:23 -1526
The Dalles 05:32:25 -51.5 Dark Down 25.4 87.4 Low 05:17:25 - 05:47:25 -1534
PNWRO 05:32:20 -52.7 Dark Down 26.9 89.3 Low 05:17:20 - 05:47:20 -1564
Maupin 05:32:27 -51.8 Dark Down 25.4 87.3 Low 05:17:27 - 05:47:27 -1568
Sisters 05:32:31 -52.0 Dark Down 25.0 86.6 Low 05:17:31 - 05:47:31 -1621
Bend 05:32:32 -52.3 Dark Down 25.2 86.6 Low 05:17:32 - 05:47:32 -1646
Oregon Observatory 05:32:33 -52.3 Dark Down 25.1 86.5 Low 05:17:33 - 05:47:33 -1656
North Lake 05:32:35 -52.9 Dark Down 25.5 86.5 Low 05:17:35 - 05:47:35 -1720
Chiloquin 05:32:38 -52.6 Dark Down 24.7 85.6 Low 05:17:38 - 05:47:38 -1747
Klamath Falls 05:32:40 -52.8 Dark Down 24.8 85.5 Low 05:17:40 - 05:47:40 -1776
Lakeview 05:32:39 -53.8 Dark Down 25.8 86.4 Low 05:17:39 - 05:47:39 -1819
Cedarville 05:32:41 -54.2 Dark Down 25.9 86.2 Low 05:17:41 - 05:47:41 -1876
Fall River/Burney 05:32:44 -53.6 Dark Down 25.0 85.2 Low 05:17:44 - 05:47:44 -1881
Susanville 05:32:46 -54.4 Dark Down 25.5 85.4 Low 05:17:46 - 05:47:46 -1953
Greenville 05:32:47 -54.3 Dark Down 25.2 85.1 Low 05:17:47 - 05:47:47 -1967
Gimple 05:32:47 -54.4 Dark Down 25.3 85.1 Low 05:17:47 - 05:47:47 -1969
Quincy 05:32:48 -54.4 Dark Down 25.2 85.0 Low 05:17:48 - 05:47:48 -1983
Portola 05:32:48 -54.8 Dark Down 25.6 85.2 Low 05:17:48 - 05:47:48 -2007
Reno 05:32:49 -55.4 Dark Down 26.1 85.5 Low 05:17:49 - 05:47:49 -2048
Carson City 05:32:50 -55.5 Dark Down 26.1 85.3 Low 05:17:50 - 05:47:50 -2079
Gardnerville 05:32:51 -55.7 Dark Down 26.1 85.2 Low 05:17:51 - 05:47:51 -2101
Yerington 05:32:49 -56.1 Dark Down 26.5 85.6 Low 05:17:49 - 05:47:49 -2114
Hawthorne 05:32:50 -56.6 Dark Down 26.9 85.7 Low 05:17:50 - 05:47:50 -2168
Lee Vining 05:32:54 -56.5 Dark Down 26.5 85.1 Low 05:17:54 - 05:47:54 -2201
Tonopah 05:32:50 -57.8 Dark Down 28.0 86.3 Low 05:17:50 - 05:47:50 -2250
Bishop 05:32:55 -57.3 Dark Down 27.0 85.3 Low 05:17:55 - 05:47:55 -2274
Beatty 05:32:53 -58.7 Dark Down 28.3 86.0 Low 05:17:53 - 05:47:53 -2363
Dunrhomin 05:32:19 -64.0 Dark Down 37.2 95.3 Up 05:17:19 - 05:47:19 -2404
CU-SBO 05:32:21 -64.1 Dark Down 37.1 95.1 Up 05:17:21 - 05:47:21 -2423
Indian Springs 05:32:53 -59.6 Dark Down 29.1 86.4 Low 05:17:53 - 05:47:53 -2424
Henderson 05:32:54 -60.4 Dark Down 29.6 86.5 Low 05:17:54 - 05:47:54 -2493
Wildwood 05:33:07 -58.4 Dark Down 26.6 83.5 Low 05:18:07 - 05:48:07 -2554
Patrick 05:32:54 -61.4 Dark Down 30.5 86.7 Up 05:17:54 - 05:47:54 -2582
Laughlin/Bullhead City 05:32:56 -61.0 Dark Down 29.9 86.2 Low 05:17:56 - 05:47:56 -2583
Kingman/Dolan Springs 05:32:56 -61.4 Dark Down 30.4 86.5 Up 05:17:56 - 05:47:56 -2596
Mohave Valley 05:32:58 -61.2 Dark Down 29.9 86.1 Low 05:17:58 - 05:47:58 -2607
Idyllwild 05:33:05 -60.0 Dark Down 28.1 84.3 Low 05:18:05 - 05:48:05 -2644
Lake Havasu City 05:32:59 -61.5 Dark Down 30.1 86.0 Up 05:17:59 - 05:47:59 -2651
Parker 05:32:59 -61.7 Dark Down 30.1 85.8 Up 05:17:59 - 05:47:59 -2683
Calipatria 05:33:05 -61.1 Dark Down 29.0 84.6 Low 05:18:05 - 05:48:05 -2737
George/Scottsdale 05:32:57 -63.7 Dark Down 32.1 86.8 Up 05:17:57 - 05:47:57 -2797
Yuma 05:33:05 -62.0 Dark Down 29.7 84.8 Low 05:18:05 - 05:48:05 -2805

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 04TV357, (2028/11/19 05:29UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:55:10.3 +07:24:26  0.4 13.12 163
Alhena         06:37:42.8 +16:23:57  1.9  6.04 169
71 Ori         06:14:50.7 +19:09:19  5.6  0.45 174
PPM 122177     06:15:29.1 +19:31:22  8.5  0.12 175
PPM 122200     06:16:17.2 +19:36:08  9.6  0.11 175
04TV357        06:15:59.0 +19:31:07 11.7       175
Positions are for J2000

Event circumstances last updated at 2022/02/21 00:40:15 UT

Marc W. Buie, Southwest Research Institute

RECON