RECON: TNO occultation with 118228

Event between (118228) 96TQ66 and star GA1260:02160946 with event index number of 2366341

Geocentric closest approach at 2028/11/14 11:05:41 UTC

J2000 position of star is 05:35:15.6 +37:43:58
Equinox of date position of star is 05:36:47.6 +37:44:45
Stellar brightness G=15.8, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 119 degrees from the moon. Moon is 6% illuminated.
TNO apparent brightness V=22.7

[RECON map]
TNO is 36.2 AU from the Sun and 35.4 AU from the Earth.
The TNO is moving 20.9 km/sec on the sky relative to the star, or, 2.9 arcsec/hr.
The 1-sigma error in the time of the event is 591 seconds.
The 1-sigma cross-track error in the shadow position is 3804 km.
The sky-plane scale is 25692.8 km/arcsec.

The TNO has an absolute magnitude Hv=7.1
Diameter=224.9 km assuming a 5% albedo -- 10.8 sec chord
Diameter=91.8 km assuming a 30% albedo -- 4.4 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 

Star training set for 118228, (2028/11/14 11:06UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:34.8 +16:33:55  0.8 24.92 133
34Bet Aur      06:01:38.9 +44:56:49  1.9  8.53 114
21Sig Aur      05:26:37.1 +37:24:34  6.4  2.13 121
PPM 070574     05:37:26.3 +37:55:05  7.9  0.17 119
118228         05:37:14.1 +37:44:58 15.8       119
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 27.9 km RECON observability=1.0 and success probability=14.6%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Sleaford 11:04:24 -30.3 Dark Down 64.4 248.0 Up 10:49:24 - 11:19:24 -1423
Kamloops 11:05:02 -39.3 Dark Down 72.7 227.8 Up 10:50:02 - 11:20:02 -1945
Kelowna 11:04:57 -39.0 Dark Down 72.8 231.6 Up 10:49:57 - 11:19:57 -2006
Peachland 11:04:58 -39.2 Dark Down 73.0 231.3 Up 10:49:58 - 11:19:58 -2024
Summerland 11:04:58 -39.2 Dark Down 73.1 231.9 Up 10:49:58 - 11:19:58 -2037
Penticton 11:04:57 -39.2 Dark Down 73.1 232.3 Up 10:49:57 - 11:19:57 -2041
Oliver 11:04:56 -39.3 Dark Down 73.3 233.2 Up 10:49:56 - 11:19:56 -2077
Anarchist Mountain Observatory 11:04:56 -39.2 Dark Down 73.3 234.0 Up 10:49:56 - 11:19:56 -2090
Tonasket 11:04:55 -39.4 Dark Down 73.5 234.7 Up 10:49:55 - 11:19:55 -2123
Okanogan 11:04:55 -39.6 Dark Down 73.8 235.3 Up 10:49:55 - 11:19:55 -2161
Brewster 11:04:55 -39.8 Dark Down 74.0 235.7 Up 10:49:55 - 11:19:55 -2194
Manson/Chelan 11:04:56 -40.1 Dark Down 74.4 235.6 Up 10:49:56 - 11:19:56 -2224
Victoria 11:05:08 -41.9 Dark Down 75.6 226.3 Up 10:50:08 - 11:20:08 -2233
Wenatchee 11:04:56 -40.3 Dark Down 74.7 236.6 Up 10:49:56 - 11:19:56 -2277
Ellensburg 11:04:55 -40.6 Dark Down 75.1 237.4 Up 10:49:55 - 11:19:55 -2325
Yakima 11:04:55 -40.7 Dark Down 75.3 238.7 Up 10:49:55 - 11:19:55 -2367
Toppenish/White Swan 11:04:54 -40.7 Dark Down 75.3 239.8 Up 10:49:54 - 11:19:54 -2385
PNWRO 11:04:49 -39.8 Dark Down 74.6 243.8 Up 10:49:49 - 11:19:49 -2385
Goldendale 11:04:54 -41.1 Dark Down 75.8 240.7 Up 10:49:54 - 11:19:54 -2453
The Dalles 11:04:56 -41.5 Dark Down 76.2 240.8 Up 10:49:56 - 11:19:56 -2485
Dunrhomin 11:03:50 -30.9 Dark Down 65.9 274.1 Up 10:48:50 - 11:18:50 -2525
Maupin 11:04:54 -41.5 Dark Down 76.3 242.5 Up 10:49:54 - 11:19:54 -2526
CU-SBO 11:03:49 -31.0 Dark Down 65.9 274.6 Up 10:48:49 - 11:18:49 -2553
Sisters 11:04:54 -42.1 Dark Down 77.0 244.8 Up 10:49:54 - 11:19:54 -2629
Bend 11:04:53 -42.0 Dark Down 76.9 246.3 Up 10:49:53 - 11:19:53 -2648
Oregon Observatory 11:04:53 -42.1 Dark Down 77.1 246.7 Up 10:49:53 - 11:19:53 -2669
North Lake 11:04:50 -41.9 Dark Down 77.0 250.3 Up 10:49:50 - 11:19:50 -2722
Chiloquin 11:04:52 -42.8 Dark Down 77.8 251.4 Up 10:49:52 - 11:19:52 -2817
Lakeview 11:04:46 -41.8 Dark Down 76.9 255.5 Up 10:49:46 - 11:19:46 -2819
Klamath Falls 11:04:52 -42.8 Dark Down 77.9 253.1 Up 10:49:52 - 11:19:52 -2851
Cedarville 11:04:44 -41.8 Dark Down 76.9 258.5 Up 10:49:44 - 11:19:44 -2882
Fall River/Burney 11:04:48 -42.8 Dark Down 77.9 259.0 Up 10:49:48 - 11:19:48 -2965
Susanville 11:04:44 -42.5 Dark Down 77.5 262.7 Up 10:49:44 - 11:19:44 -3012
Gimple 11:04:44 -42.7 Dark Down 77.7 263.8 Up 10:49:44 - 11:19:44 -3047
Greenville 11:04:45 -42.7 Dark Down 77.7 263.7 Up 10:49:45 - 11:19:45 -3049
Quincy 11:04:44 -42.8 Dark Down 77.7 264.6 Up 10:49:44 - 11:19:44 -3070
Portola 11:04:43 -42.4 Dark Down 77.4 265.6 Up 10:49:43 - 11:19:43 -3070
Reno 11:04:40 -42.0 Dark Down 76.9 267.3 Up 10:49:40 - 11:19:40 -3080
Carson City 11:04:38 -42.1 Dark Down 76.9 268.9 Up 10:49:38 - 11:19:38 -3117
Yerington 11:04:36 -41.6 Dark Down 76.4 270.1 Up 10:49:36 - 11:19:36 -3120
Gardnerville 11:04:38 -42.1 Dark Down 76.9 269.9 Up 10:49:38 - 11:19:38 -3142
Hawthorne 11:04:33 -41.3 Dark Down 76.0 272.3 Up 10:49:33 - 11:19:33 -3153
Tonopah 11:04:27 -40.3 Dark Down 74.9 274.7 Up 10:49:27 - 11:19:27 -3159
Lee Vining 11:04:34 -41.8 Dark Down 76.4 274.4 Up 10:49:34 - 11:19:34 -3226
Indian Springs 11:04:19 -39.3 Dark Down 73.5 280.3 Up 10:49:19 - 11:19:19 -3265
Beatty 11:04:23 -40.1 Dark Down 74.4 279.0 Up 10:49:23 - 11:19:23 -3266
Bishop 11:04:30 -41.3 Dark Down 75.8 277.0 Up 10:49:30 - 11:19:30 -3267
Henderson 11:04:15 -38.8 Dark Down 72.9 282.1 Up 10:49:15 - 11:19:15 -3298
Patrick 11:04:10 -37.9 Dark Down 71.9 284.0 Up 10:49:10 - 11:19:10 -3325
Kingman/Dolan Springs 11:04:09 -38.1 Dark Down 72.0 284.7 Up 10:49:09 - 11:19:09 -3354
Laughlin/Bullhead City 11:04:12 -38.5 Dark Down 72.4 284.8 Up 10:49:12 - 11:19:12 -3374
Mohave Valley 11:04:11 -38.6 Dark Down 72.3 285.6 Up 10:49:11 - 11:19:11 -3402
George/Scottsdale 11:03:59 -36.4 Dark Down 69.8 288.5 Up 10:48:59 - 11:18:59 -3428
Lake Havasu City 11:04:09 -38.4 Dark Down 72.0 286.7 Up 10:49:09 - 11:19:09 -3435
Parker 11:04:09 -38.4 Dark Down 71.9 287.8 Up 10:49:09 - 11:19:09 -3470
Idyllwild 11:04:17 -40.4 Dark Down 73.6 289.7 Up 10:49:17 - 11:19:17 -3593
Wildwood 11:04:26 -41.9 Dark Down 75.2 289.3 Up 10:49:26 - 11:19:26 -3615
Calipatria 11:04:12 -39.4 Dark Down 72.5 291.1 Up 10:49:12 - 11:19:12 -3617
Yuma 11:04:08 -38.7 Dark Down 71.6 292.0 Up 10:49:08 - 11:19:08 -3631

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 118228, (2028/11/14 11:06UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:29  0.8 24.92 133
34Bet Aur      05:59:31.6 +44:56:51  1.9  8.53 114
21Sig Aur      05:24:39.2 +37:23:07  6.4  2.13 121
PPM 070574     05:35:27.6 +37:54:06  7.9  0.17 119
118228         05:35:15.6 +37:43:58 15.8       119
Positions are for J2000

Event circumstances last updated at 2022/05/30 23:04:22 UT

Marc W. Buie, Southwest Research Institute

RECON