RECON: TNO occultation with 143685

Event between (143685) 03SS317 and star GA1040:00422359 with event index number of 2468437

Geocentric closest approach at 2028/11/12 08:36:53 UTC

J2000 position of star is 04:02:03.6 +15:06:15
Equinox of date position of star is 04:03:19.6 +15:09:55
Stellar brightness G=14.6, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 111 degrees from the moon. Moon is 23% illuminated.
TNO apparent brightness V=22.5

[RECON map]
TNO is 29.6 AU from the Sun and 28.6 AU from the Earth.
The TNO is moving 23.7 km/sec on the sky relative to the star, or, 4.1 arcsec/hr.
The 1-sigma error in the time of the event is 184 seconds.
The 1-sigma cross-track error in the shadow position is 1407 km.
The sky-plane scale is 20754.1 km/arcsec.

The TNO has an absolute magnitude Hv=7.8
Diameter=166.0 km assuming a 5% albedo -- 7.0 sec chord
Diameter=67.8 km assuming a 30% albedo -- 2.9 sec chord
Dynamical classification is 4:3E
 
 
 
 
 
 

Star training set for 143685, (2028/11/12 08:37UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:34.8 +16:33:55  0.8  8.26 103
44Zet Per      03:55:57.3 +31:58:01  2.8 16.88 110
PPM 119638     04:09:20.2 +15:14:16  6.1  1.36 110
PPM 119538     04:02:22.5 +15:33:16  8.2  0.49 111
PPM 119565     04:04:16.4 +15:08:24  8.9  0.15 111
143685         04:03:41.5 +15:10:58 14.6       111
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 4.9 sigma about the mid-time.
The median site spacing is 27.1 km RECON observability=1.0 and success probability=34.8%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kamloops 08:36:18 -55.7 Dark Down 54.4 180.3 Up 08:21:18 - 08:51:18 449
Sleaford 08:35:37 -49.8 Dark Down 51.3 202.7 Up 08:20:37 - 08:50:37 383
Kelowna 08:36:16 -56.2 Dark Down 55.2 181.8 Up 08:21:16 - 08:51:16 363
Peachland 08:36:17 -56.4 Dark Down 55.3 181.3 Up 08:21:17 - 08:51:17 358
Summerland 08:36:17 -56.5 Dark Down 55.5 181.5 Up 08:21:17 - 08:51:17 343
Penticton 08:36:17 -56.5 Dark Down 55.6 181.7 Up 08:21:17 - 08:51:17 335
Victoria 08:36:29 -58.4 Dark Down 56.5 175.1 Up 08:21:29 - 08:51:29 309
Oliver 08:36:17 -56.9 Dark Down 55.9 181.7 Up 08:21:17 - 08:51:17 303
Anarchist Mountain Observatory 08:36:17 -57.0 Dark Down 56.1 182.1 Up 08:21:17 - 08:51:17 285
Tonasket 08:36:17 -57.3 Dark Down 56.4 182.0 Up 08:21:17 - 08:51:17 258
Okanogan 08:36:18 -57.6 Dark Down 56.7 181.7 Up 08:21:18 - 08:51:18 230
Brewster 08:36:19 -57.9 Dark Down 57.0 181.4 Up 08:21:19 - 08:51:19 209
Manson/Chelan 08:36:20 -58.2 Dark Down 57.2 180.7 Up 08:21:20 - 08:51:20 196
Wenatchee 08:36:21 -58.7 Dark Down 57.7 180.4 Up 08:21:21 - 08:51:21 155
Ellensburg 08:36:22 -59.1 Dark Down 58.1 180.1 Up 08:21:22 - 08:51:22 121
Yakima 08:36:22 -59.5 Dark Down 58.5 180.0 Up 08:21:22 - 08:51:22 84
Toppenish/White Swan 08:36:22 -59.6 Dark Down 58.7 180.3 Up 08:21:22 - 08:51:22 61
Goldendale 08:36:24 -60.3 Dark Down 59.3 179.6 Up 08:21:24 - 08:51:24 17
The Dalles 08:36:25 -60.6 Dark Down 59.5 178.9 Up 08:21:25 - 08:51:25 3
PNWRO 08:36:18 -59.5 Dark Down 59.1 183.1 Up 08:21:18 - 08:51:18 1
Maupin 08:36:25 -60.9 Dark Down 59.9 179.1 Up 08:21:25 - 08:51:25 -38
Sisters 08:36:28 -61.9 Dark Down 60.8 178.1 Up 08:21:28 - 08:51:28 -112
Bend 08:36:27 -62.0 Dark Down 61.0 178.6 Up 08:21:27 - 08:51:27 -139
Oregon Observatory 08:36:28 -62.2 Dark Down 61.2 178.3 Up 08:21:28 - 08:51:28 -153
North Lake 08:36:27 -62.6 Dark Down 61.9 179.4 Up 08:21:27 - 08:51:27 -224
Chiloquin 08:36:30 -63.5 Dark Down 62.5 177.4 Up 08:21:30 - 08:51:30 -270
Klamath Falls 08:36:31 -63.8 Dark Down 62.9 177.5 Up 08:21:31 - 08:51:31 -305
Lakeview 08:36:26 -63.4 Dark Down 62.9 180.5 Up 08:21:26 - 08:51:26 -335
Cedarville 08:36:26 -63.9 Dark Down 63.6 180.9 Up 08:21:26 - 08:51:26 -402
Fall River/Burney 08:36:31 -64.7 Dark Down 64.0 178.3 Up 08:21:31 - 08:51:31 -426
Susanville 08:36:28 -65.0 Dark Down 64.7 179.9 Up 08:21:28 - 08:51:28 -502
Greenville 08:36:30 -65.4 Dark Down 65.0 179.2 Up 08:21:30 - 08:51:30 -523
Gimple 08:36:29 -65.4 Dark Down 65.0 179.4 Up 08:21:29 - 08:51:29 -525
Quincy 08:36:30 -65.6 Dark Down 65.2 179.2 Up 08:21:30 - 08:51:30 -543
Portola 08:36:28 -65.5 Dark Down 65.3 180.3 Up 08:21:28 - 08:51:28 -564
Reno 08:36:26 -65.5 Dark Down 65.5 181.8 Up 08:21:26 - 08:51:26 -603
Carson City 08:36:27 -65.8 Dark Down 65.9 181.9 Up 08:21:27 - 08:51:27 -639
Gardnerville 08:36:27 -66.0 Dark Down 66.2 182.0 Up 08:21:27 - 08:51:27 -664
Yerington 08:36:24 -65.7 Dark Down 66.1 183.4 Up 08:21:24 - 08:51:24 -670
Hawthorne 08:36:23 -65.8 Dark Down 66.5 184.7 Up 08:21:23 - 08:51:23 -727
Dunrhomin 08:35:35 -57.3 Dark Down 61.6 212.2 Up 08:20:35 - 08:50:35 -768
Lee Vining 08:36:25 -66.5 Dark Down 67.1 183.7 Up 08:21:25 - 08:51:25 -774
CU-SBO 08:35:36 -57.5 Dark Down 61.8 212.2 Up 08:20:36 - 08:50:36 -792
Tonopah 08:36:18 -65.5 Dark Down 66.9 188.2 Up 08:21:18 - 08:51:18 -800
Bishop 08:36:23 -66.6 Dark Down 67.7 185.6 Up 08:21:23 - 08:51:23 -848
Beatty 08:36:18 -66.2 Dark Down 67.9 189.8 Up 08:21:18 - 08:51:18 -925
Indian Springs 08:36:14 -65.9 Dark Down 68.1 192.7 Up 08:21:14 - 08:51:14 -979
Henderson 08:36:12 -65.8 Dark Down 68.5 194.8 Up 08:21:12 - 08:51:12 -1046
Patrick 08:36:08 -65.6 Dark Down 68.8 198.1 Up 08:21:08 - 08:51:08 -1130
Laughlin/Bullhead City 08:36:11 -66.2 Dark Down 69.2 196.4 Up 08:21:11 - 08:51:11 -1143
Kingman/Dolan Springs 08:36:09 -65.9 Dark Down 69.1 197.8 Up 08:21:09 - 08:51:09 -1150
Mohave Valley 08:36:11 -66.4 Dark Down 69.5 196.7 Up 08:21:11 - 08:51:11 -1171
Wildwood 08:36:27 -69.3 Dark Down 70.9 185.9 Up 08:21:27 - 08:51:27 -1177
Lake Havasu City 08:36:10 -66.5 Dark Down 69.8 197.6 Up 08:21:10 - 08:51:10 -1217
Idyllwild 08:36:20 -68.4 Dark Down 71.0 191.5 Up 08:21:20 - 08:51:20 -1250
Parker 08:36:11 -66.7 Dark Down 70.1 198.0 Up 08:21:11 - 08:51:11 -1254
Calipatria 08:36:16 -68.1 Dark Down 71.4 195.4 Up 08:21:16 - 08:51:16 -1337
George/Scottsdale 08:36:02 -65.4 Dark Down 69.8 204.9 Up 08:21:02 - 08:51:02 -1341
Yuma 08:36:13 -67.8 Dark Down 71.6 198.4 Up 08:21:13 - 08:51:13 -1398

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 143685, (2028/11/12 08:37UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:29  0.8  8.26 103
44Zet Per      03:54:07.9 +31:53:01  2.8 16.88 110
PPM 119638     04:07:42.2 +15:09:46  6.1  1.36 110
PPM 119538     04:00:44.5 +15:28:30  8.2  0.49 111
PPM 119565     04:02:38.5 +15:03:42  8.9  0.15 111
143685         04:02:03.6 +15:06:15 14.6       111
Positions are for J2000

Event circumstances last updated at 2022/05/30 23:03:21 UT

Marc W. Buie, Southwest Research Institute

RECON