RECON: TNO occultation with 98WX24

Event between 98WX24 and star GA1120:01310141 with event index number of 1398783

Geocentric closest approach at 2024/11/27 08:40:57 UTC

J2000 position of star is 05:35:56.2 +23:41:47
Equinox of date position of star is 05:37:17.5 +23:42:33
Stellar brightness G=15.4, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 118 degrees from the moon. Moon is 14% illuminated.
TNO apparent brightness V=23.2

[RECON map]
TNO is 44.9 AU from the Sun and 44.0 AU from the Earth.
The TNO is moving 24.2 km/sec on the sky relative to the star, or, 2.7 arcsec/hr.
The 1-sigma error in the time of the event is 654 seconds.
The 1-sigma cross-track error in the shadow position is 2222 km.
The sky-plane scale is 31895.8 km/arcsec.

The TNO has an absolute magnitude Hv=6.7
Diameter=281.8 km assuming a 5% albedo -- 11.6 sec chord
Diameter=115.1 km assuming a 30% albedo -- 4.7 sec chord
Dynamical classification is CLASSICAL
 
 
 
 
 
 

Star training set for 98WX24, (2024/11/27 08:41UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:21.2 +16:33:27  0.8 15.80 132
Alnath         05:27:52.1 +28:37:34  1.6  5.37 120
PPM 094690     05:43:25.7 +23:20:12  6.5  1.42 116
PPM 094515     05:36:35.1 +24:18:19  8.0  0.63 118
PPM 094523     05:36:50.9 +23:31:38  9.4  0.23 118
98WX24         05:37:27.3 +23:42:38 15.4       117
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 1.4 sigma about the mid-time.
The median site spacing is 29.7 km RECON observability=1.0 and success probability=16.2%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Sleaford 08:40:34 -52.6 Dark Down 61.1 193.3 Up 08:25:34 - 08:55:34 -1987
Kamloops 08:41:15 -58.8 Dark Down 62.4 165.5 Up 08:26:15 - 08:56:15 -2089
Kelowna 08:41:13 -59.3 Dark Down 63.4 166.9 Up 08:26:13 - 08:56:13 -2175
Peachland 08:41:14 -59.5 Dark Down 63.4 166.2 Up 08:26:14 - 08:56:14 -2184
Summerland 08:41:14 -59.6 Dark Down 63.6 166.3 Up 08:26:14 - 08:56:14 -2199
Penticton 08:41:14 -59.7 Dark Down 63.7 166.5 Up 08:26:14 - 08:56:14 -2207
Oliver 08:41:13 -60.0 Dark Down 64.0 166.4 Up 08:26:13 - 08:56:13 -2242
Anarchist Mountain Observatory 08:41:13 -60.1 Dark Down 64.2 166.7 Up 08:26:13 - 08:56:13 -2260
Victoria 08:41:25 -61.6 Dark Down 63.9 158.2 Up 08:26:25 - 08:56:25 -2281
Tonasket 08:41:14 -60.4 Dark Down 64.5 166.4 Up 08:26:14 - 08:56:14 -2290
Okanogan 08:41:14 -60.7 Dark Down 64.8 165.9 Up 08:26:14 - 08:56:14 -2323
Brewster 08:41:15 -61.0 Dark Down 65.0 165.3 Up 08:26:15 - 08:56:15 -2349
Manson/Chelan 08:41:16 -61.3 Dark Down 65.2 164.4 Up 08:26:16 - 08:56:16 -2368
Wenatchee 08:41:17 -61.8 Dark Down 65.6 163.8 Up 08:26:17 - 08:56:17 -2415
Ellensburg 08:41:18 -62.2 Dark Down 65.9 163.1 Up 08:26:18 - 08:56:18 -2455
Yakima 08:41:18 -62.6 Dark Down 66.3 162.8 Up 08:26:18 - 08:56:18 -2497
Toppenish/White Swan 08:41:18 -62.7 Dark Down 66.6 163.0 Up 08:26:18 - 08:56:18 -2520
PNWRO 08:41:13 -62.6 Dark Down 67.2 166.1 Up 08:26:13 - 08:56:13 -2567
Goldendale 08:41:19 -63.3 Dark Down 67.0 161.7 Up 08:26:19 - 08:56:19 -2573
The Dalles 08:41:21 -63.7 Dark Down 67.1 160.7 Up 08:26:21 - 08:56:21 -2594
Maupin 08:41:21 -64.0 Dark Down 67.6 160.6 Up 08:26:21 - 08:56:21 -2637
Sisters 08:41:23 -64.9 Dark Down 68.3 158.7 Up 08:26:23 - 08:56:23 -2724
Bend 08:41:22 -65.1 Dark Down 68.6 159.1 Up 08:26:22 - 08:56:22 -2751
Oregon Observatory 08:41:23 -65.3 Dark Down 68.7 158.6 Up 08:26:23 - 08:56:23 -2768
North Lake 08:41:21 -65.6 Dark Down 69.4 159.3 Up 08:26:21 - 08:56:21 -2838
Chiloquin 08:41:25 -66.6 Dark Down 69.8 156.3 Up 08:26:25 - 08:56:25 -2901
Klamath Falls 08:41:25 -66.8 Dark Down 70.1 156.1 Up 08:26:25 - 08:56:25 -2938
Lakeview 08:41:20 -66.4 Dark Down 70.6 159.7 Up 08:26:20 - 08:56:20 -2952
Cedarville 08:41:19 -66.8 Dark Down 71.2 159.5 Up 08:26:19 - 08:56:19 -3023
Fall River/Burney 08:41:23 -67.7 Dark Down 71.3 155.7 Up 08:26:23 - 08:56:23 -3064
Susanville 08:41:22 -68.0 Dark Down 72.1 157.0 Up 08:26:22 - 08:56:22 -3137
Greenville 08:41:23 -68.3 Dark Down 72.3 155.8 Up 08:26:23 - 08:56:23 -3164
Gimple 08:41:23 -68.3 Dark Down 72.3 156.0 Up 08:26:23 - 08:56:23 -3164
Quincy 08:41:23 -68.5 Dark Down 72.5 155.5 Up 08:26:23 - 08:56:23 -3185
Dunrhomin 08:40:29 -59.5 Dark Down 72.2 203.8 Up 08:25:29 - 08:55:29 -3200
Portola 08:41:22 -68.4 Dark Down 72.7 156.7 Up 08:26:22 - 08:56:22 -3202
CU-SBO 08:40:29 -59.7 Dark Down 72.5 203.8 Up 08:25:29 - 08:55:29 -3227
Reno 08:41:19 -68.3 Dark Down 73.2 158.3 Up 08:26:19 - 08:56:19 -3235
Carson City 08:41:19 -68.6 Dark Down 73.5 157.9 Up 08:26:19 - 08:56:19 -3273
Yerington 08:41:18 -68.5 Dark Down 73.9 159.6 Up 08:26:18 - 08:56:18 -3298
Gardnerville 08:41:19 -68.8 Dark Down 73.7 157.8 Up 08:26:19 - 08:56:19 -3300
Hawthorne 08:41:16 -68.6 Dark Down 74.4 160.8 Up 08:26:16 - 08:56:16 -3351
Lee Vining 08:41:17 -69.2 Dark Down 74.8 158.4 Up 08:26:17 - 08:56:17 -3409
Tonopah 08:41:11 -68.2 Dark Down 75.2 165.0 Up 08:26:11 - 08:56:11 -3410
Bishop 08:41:15 -69.3 Dark Down 75.6 160.1 Up 08:26:15 - 08:56:15 -3478
Beatty 08:41:10 -68.7 Dark Down 76.4 165.5 Up 08:26:10 - 08:56:10 -3537
Indian Springs 08:41:06 -68.3 Dark Down 76.9 169.3 Up 08:26:06 - 08:56:06 -3578
Henderson 08:41:04 -68.2 Dark Down 77.5 171.7 Up 08:26:04 - 08:56:04 -3639
Patrick 08:41:00 -67.8 Dark Down 78.3 176.2 Up 08:26:00 - 08:56:00 -3712
Kingman/Dolan Springs 08:41:00 -68.1 Dark Down 78.5 175.3 Up 08:26:00 - 08:56:00 -3735
Laughlin/Bullhead City 08:41:02 -68.5 Dark Down 78.5 172.9 Up 08:26:02 - 08:56:02 -3736
Mohave Valley 08:41:02 -68.6 Dark Down 78.7 172.8 Up 08:26:02 - 08:56:02 -3765
Lake Havasu City 08:41:01 -68.7 Dark Down 79.1 173.7 Up 08:26:01 - 08:56:01 -3810
Wildwood 08:41:18 -71.7 Dark Down 78.5 153.8 Up 08:26:18 - 08:56:18 -3830
Parker 08:41:01 -68.8 Dark Down 79.5 173.7 Up 08:26:01 - 08:56:01 -3848
Idyllwild 08:41:11 -70.7 Dark Down 79.5 161.4 Up 08:26:11 - 08:56:11 -3881
George/Scottsdale 08:40:52 -67.3 Dark Down 79.9 186.0 Up 08:25:52 - 08:55:52 -3903
Calipatria 08:41:06 -70.2 Dark Down 80.3 166.4 Up 08:26:06 - 08:56:06 -3954
Yuma 08:41:03 -69.8 Dark Down 80.9 170.8 Up 08:26:03 - 08:56:03 -4005

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 98WX24, (2024/11/27 08:41UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:29  0.8 15.80 132
Alnath         05:26:17.6 +28:36:23  1.6  5.37 120
PPM 094690     05:41:54.8 +23:19:34  6.5  1.42 116
PPM 094515     05:35:03.6 +24:17:26  8.0  0.63 118
PPM 094523     05:35:19.9 +23:30:46  9.4  0.23 118
98WX24         05:35:56.2 +23:41:47 15.4       118
Positions are for J2000

Event circumstances last updated at 2022/03/31 22:58:19 UT

Marc W. Buie, Southwest Research Institute

RECON