RECON: TNO occultation with 523696

Event between (523696) 14GW53 and star GA0720:05460497 with event index number of 2334754

Geocentric closest approach at 2027/05/09 09:27:47 UTC

J2000 position of star is 15:17:13.6 -16:40:04
Equinox of date position of star is 15:18:29.1 -16:44:55
Stellar brightness G=15.2, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 143 degrees from the moon. Moon is 11% illuminated.
TNO apparent brightness V=21.5

[RECON map]
TNO is 39.5 AU from the Sun and 38.5 AU from the Earth.
The TNO is moving 25.0 km/sec on the sky relative to the star, or, 3.2 arcsec/hr.
The 1-sigma error in the time of the event is 104 seconds.
The 1-sigma cross-track error in the shadow position is 2273 km.
The sky-plane scale is 27921.1 km/arcsec.

The TNO has an absolute magnitude Hv=5.6
Diameter=461.3 km assuming a 5% albedo -- 18.4 sec chord
Diameter=188.3 km assuming a 30% albedo -- 7.5 sec chord
Dynamical classification is SCATEXTD
 
 
 
 
 
 

Star training set for 523696, (2027/05/09 09:28UT)
Object            RA         Dec     mag  sep  mel
Antares        16:31:05.4 -26:29:25  0.9 19.38 162
27Bet Lib      15:18:29.0 -09:28:55  2.6  7.28 140
28 Lib         15:22:27.0 -18:15:21  6.4  1.73 144
PPM 229896     15:13:53.1 -16:30:45  7.8  1.20 142
PPM 230025     15:19:02.8 -16:57:35  9.9  0.20 143
523696         15:18:46.0 -16:46:00 15.2       143
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 14.2 km RECON observability=1.0 and success probability=8.4%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Sleaford 09:27:06 -13.6 AT Down 15.3 213.3 Really Low 09:17:56 - 09:36:17 -1973
Kamloops 09:27:39 -19.2 Dark Down 20.6 199.7 Low 09:18:29 - 09:36:50 -2070
Kelowna 09:27:36 -19.7 Dark Down 21.1 200.7 Low 09:18:26 - 09:36:47 -2096
Peachland 09:27:36 -19.9 Dark Down 21.3 200.4 Low 09:18:26 - 09:36:47 -2102
Summerland 09:27:36 -20.0 Dark Down 21.4 200.5 Low 09:18:25 - 09:36:46 -2108
Penticton 09:27:36 -20.0 Dark Down 21.5 200.6 Low 09:18:25 - 09:36:46 -2110
Oliver 09:27:35 -20.4 Dark Down 21.8 200.7 Low 09:18:25 - 09:36:46 -2124
Anarchist Mountain Observatory 09:27:35 -20.5 Dark Down 21.9 200.9 Low 09:18:24 - 09:36:45 -2129
Tonasket 09:27:34 -20.8 Dark Down 22.2 200.9 Low 09:18:23 - 09:36:44 -2143
Okanogan 09:27:34 -21.1 Dark Down 22.6 200.8 Low 09:18:23 - 09:36:44 -2158
Brewster 09:27:34 -21.4 Dark Down 22.9 200.6 Low 09:18:24 - 09:36:45 -2171
Victoria 09:27:45 -21.9 Dark Down 23.2 196.9 Low 09:18:34 - 09:36:55 -2178
Manson/Chelan 09:27:35 -21.7 Dark Down 23.2 200.3 Low 09:18:25 - 09:36:46 -2182
Wenatchee 09:27:35 -22.2 Dark Down 23.6 200.2 Low 09:18:24 - 09:36:45 -2204
Ellensburg 09:27:35 -22.6 Dark Down 24.1 200.0 Low 09:18:24 - 09:36:45 -2223
Yakima 09:27:34 -23.0 Dark Down 24.5 200.0 Low 09:18:24 - 09:36:45 -2242
Toppenish/White Swan 09:27:34 -23.2 Dark Down 24.6 200.2 Low 09:18:23 - 09:36:44 -2251
PNWRO 09:27:29 -23.1 Dark Down 24.6 201.8 Low 09:18:18 - 09:36:39 -2258
Goldendale 09:27:34 -23.8 Dark Down 25.2 199.9 Low 09:18:23 - 09:36:44 -2279
The Dalles 09:27:35 -24.1 Dark Down 25.5 199.6 Low 09:18:24 - 09:36:45 -2292
Maupin 09:27:34 -24.4 Dark Down 25.9 199.7 Low 09:18:24 - 09:36:45 -2311
Sisters 09:27:35 -25.4 Dark Down 26.9 199.4 Low 09:18:24 - 09:36:45 -2357
Bend 09:27:33 -25.5 Dark Down 27.0 199.7 Low 09:18:23 - 09:36:44 -2367
Oregon Observatory 09:27:33 -25.7 Dark Down 27.2 199.6 Low 09:18:23 - 09:36:44 -2376
North Lake 09:27:31 -26.2 Dark Down 27.7 200.2 Low 09:18:20 - 09:36:41 -2405
Chiloquin 09:27:33 -27.1 Dark Down 28.6 199.4 Low 09:18:22 - 09:36:43 -2447
Lakeview 09:27:27 -27.0 Dark Down 28.5 201.0 Low 09:18:17 - 09:36:38 -2456
Klamath Falls 09:27:32 -27.4 Dark Down 28.9 199.5 Low 09:18:21 - 09:36:42 -2464
Cedarville 09:27:26 -27.5 Dark Down 29.1 201.3 Low 09:18:16 - 09:36:37 -2489
Dunrhomin 09:26:39 -22.7 Dark Down 24.8 216.3 Low 09:17:28 - 09:35:49 -2505
CU-SBO 09:26:39 -23.0 Dark Down 25.1 216.3 Low 09:17:28 - 09:35:49 -2518
Fall River/Burney 09:27:29 -28.3 Dark Down 29.9 200.1 Low 09:18:19 - 09:36:40 -2525
Susanville 09:27:27 -28.7 Dark Down 30.3 201.0 Up 09:18:16 - 09:36:37 -2554
Gimple 09:27:26 -29.0 Dark Down 30.6 200.9 Up 09:18:16 - 09:36:37 -2572
Greenville 09:27:27 -29.0 Dark Down 30.6 200.8 Up 09:18:16 - 09:36:37 -2572
Quincy 09:27:26 -29.2 Dark Down 30.8 200.8 Up 09:18:15 - 09:36:36 -2584
Portola 09:27:24 -29.2 Dark Down 30.8 201.3 Up 09:18:14 - 09:36:35 -2587
Reno 09:27:24 -29.2 Dark Down 30.9 202.1 Up 09:18:14 - 09:36:35 -2598
Carson City 09:27:24 -29.5 Dark Down 31.2 202.2 Up 09:18:14 - 09:36:35 -2618
Yerington 09:27:24 -29.5 Dark Down 31.2 202.9 Up 09:18:14 - 09:36:35 -2627
Gardnerville 09:27:24 -29.7 Dark Down 31.4 202.3 Up 09:18:14 - 09:36:35 -2633
Hawthorne 09:27:24 -29.7 Dark Down 31.4 203.6 Up 09:18:14 - 09:36:35 -2654
Tonopah 09:27:12 -29.7 Dark Down 31.4 205.2 Up 09:18:01 - 09:36:22 -2666
Lee Vining 09:27:24 -30.4 Dark Down 32.1 203.2 Up 09:18:14 - 09:36:35 -2689
Bishop 09:27:14 -30.7 Dark Down 32.4 204.1 Up 09:18:04 - 09:36:25 -2716
Beatty 09:27:09 -30.5 Dark Down 32.3 205.9 Up 09:17:58 - 09:36:19 -2734
Indian Springs 09:27:05 -30.4 Dark Down 32.2 207.1 Up 09:17:54 - 09:36:15 -2748
Henderson 09:27:02 -30.5 Dark Down 32.4 208.0 Up 09:17:51 - 09:36:12 -2778
Patrick 09:26:56 -30.6 Dark Down 32.6 209.3 Up 09:17:46 - 09:36:07 -2812
Kingman/Dolan Springs 09:26:57 -30.9 Dark Down 32.8 209.2 Up 09:17:47 - 09:36:08 -2827
Laughlin/Bullhead City 09:26:58 -31.1 Dark Down 33.1 208.7 Up 09:17:48 - 09:36:09 -2831
Mohave Valley 09:26:59 -31.4 Dark Down 33.3 208.8 Up 09:17:48 - 09:36:09 -2849
Lake Havasu City 09:26:57 -31.6 Dark Down 33.5 209.2 Up 09:17:46 - 09:36:07 -2873
Parker 09:26:56 -31.9 Dark Down 33.8 209.3 Up 09:17:46 - 09:36:07 -2896
George/Scottsdale 09:26:48 -31.1 Dark Down 33.2 211.9 Up 09:17:37 - 09:35:58 -2913
Wildwood 09:27:11 -33.7 Dark Down 35.5 204.8 Up 09:18:00 - 09:36:21 -2925
Idyllwild 09:27:03 -33.3 Dark Down 35.1 206.9 Up 09:17:53 - 09:36:14 -2935
Calipatria 09:26:59 -33.3 Dark Down 35.2 208.4 Up 09:17:49 - 09:36:10 -2970
Yuma 09:26:55 -33.3 Dark Down 35.2 209.4 Up 09:17:45 - 09:36:06 -2994

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 523696, (2027/05/09 09:28UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 19.38 162
27Bet Lib      15:17:00.3 -09:22:59  2.6  7.28 140
28 Lib         15:20:53.7 -18:09:32  6.4  1.73 144
PPM 229896     15:12:20.9 -16:24:40  7.8  1.20 142
PPM 230025     15:17:30.3 -16:51:40  9.9  0.20 143
523696         15:17:13.6 -16:40:04 15.2       143
Positions are for J2000

Event circumstances last updated at 2022/05/07 22:13:30 UT

Marc W. Buie, Southwest Research Institute

RECON