RECON: TNO occultation with 131696

Event between (131696) 01XT254 and star GA1000:03419320 with event index number of 2038550

Geocentric closest approach at 2024/12/13 09:11:23 UTC

J2000 position of star is 10:13:55.5 +11:13:52
Equinox of date position of star is 10:15:06.5 +11:07:12
Stellar brightness G=15.6, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 96 degrees from the moon. Moon is 95% illuminated.
TNO apparent brightness V=23.1

[RECON map]
TNO is 36.3 AU from the Sun and 35.9 AU from the Earth.
The TNO is moving 4.9 km/sec on the sky relative to the star, or, 0.7 arcsec/hr.
The 1-sigma error in the time of the event is 704 seconds.
The 1-sigma cross-track error in the shadow position is 1938 km.
The sky-plane scale is 26064.1 km/arcsec.

The TNO has an absolute magnitude Hv=7.4
Diameter=199.5 km assuming a 5% albedo -- 40.3 sec chord
Diameter=81.5 km assuming a 30% albedo -- 16.5 sec chord
Dynamical classification is 7:3EEEE
 
 
 
 
 
 

Star training set for 131696, (2024/12/13 09:11UT)
Object            RA         Dec     mag  sep  mel
Regulus        10:09:42.0 +11:50:39  1.3  1.55  95
31 Leo         10:09:13.6 +09:52:27  6.0  1.93  95
PPM 127247     10:16:29.4 +11:32:57  7.9  0.54  96
PPM 127224     10:15:09.9 +10:43:03  8.7  0.39  96
PPM 127220     10:14:51.3 +11:03:30 11.3  0.11  96
131696         10:15:15.1 +11:06:23 15.6        97
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 1.3 sigma about the mid-time.
The median site spacing is 29.2 km RECON observability=1.0 and success probability=13.5%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Sleaford 09:23:51 -49.9 Dark Up 39.9 131.4 Up 09:08:51 - 09:38:51 4588
Kamloops 09:26:21 -57.4 Dark Up 33.6 116.2 Up 09:11:21 - 09:41:21 4307
Kelowna 09:26:20 -57.6 Dark Up 34.4 116.5 Up 09:11:20 - 09:41:20 4234
Peachland 09:26:23 -57.8 Dark Up 34.3 116.2 Up 09:11:23 - 09:41:23 4220
Summerland 09:26:23 -57.9 Dark Up 34.4 116.2 Up 09:11:23 - 09:41:23 4206
Penticton 09:26:20 -57.9 Dark Up 34.5 116.2 Up 09:11:20 - 09:41:20 4201
Oliver 09:26:25 -58.1 Dark Up 34.7 116.0 Up 09:11:25 - 09:41:25 4166
Anarchist Mountain Observatory 09:26:23 -58.2 Dark Up 34.9 116.1 Up 09:11:23 - 09:41:23 4150
Tonasket 09:26:23 -58.4 Dark Up 35.0 115.8 Up 09:11:23 - 09:41:23 4119
Okanogan 09:26:27 -58.7 Dark Up 35.0 115.5 Up 09:11:27 - 09:41:27 4084
Victoria 09:27:04 -60.2 Dark Up 32.7 112.2 Up 09:12:04 - 09:42:04 4073
Brewster 09:26:33 -59.0 Dark Up 35.0 115.2 Up 09:11:33 - 09:41:33 4055
Manson/Chelan 09:26:35 -59.3 Dark Up 34.9 114.7 Up 09:11:35 - 09:41:35 4031
Wenatchee 09:26:42 -59.7 Dark Up 35.0 114.3 Up 09:11:42 - 09:41:42 3982
Ellensburg 09:26:46 -60.1 Dark Up 35.1 113.8 Up 09:11:46 - 09:41:46 3939
Yakima 09:26:48 -60.4 Dark Up 35.2 113.5 Up 09:11:48 - 09:41:48 3897
Toppenish/White Swan 09:26:44 -60.5 Dark Up 35.4 113.5 Up 09:11:44 - 09:41:44 3876
PNWRO 09:26:33 -60.0 Dark Up 36.5 114.6 Up 09:11:33 - 09:41:33 3851
Goldendale 09:26:52 -61.0 Dark Up 35.4 112.8 Up 09:11:52 - 09:41:52 3817
The Dalles 09:26:59 -61.4 Dark Up 35.2 112.4 Up 09:11:59 - 09:41:59 3791
Maupin 09:26:59 -61.6 Dark Up 35.5 112.2 Up 09:11:59 - 09:41:59 3749
Sisters 09:27:09 -62.4 Dark Up 35.5 111.2 Up 09:12:09 - 09:42:09 3654
Bend 09:27:07 -62.5 Dark Up 35.7 111.3 Up 09:12:07 - 09:42:07 3632
Oregon Observatory 09:27:10 -62.7 Dark Up 35.7 111.0 Up 09:12:10 - 09:42:10 3613
North Lake 09:27:08 -62.8 Dark Up 36.3 111.1 Up 09:12:08 - 09:42:08 3550
Chiloquin 09:27:20 -63.7 Dark Up 35.9 109.8 Up 09:12:20 - 09:42:20 3473
Lakeview 09:27:05 -63.1 Dark Up 37.1 110.8 Up 09:12:05 - 09:42:05 3444
Klamath Falls 09:27:19 -63.9 Dark Up 36.1 109.7 Up 09:12:19 - 09:42:19 3437
Dunrhomin 09:24:08 -54.4 Dark Up 47.6 123.3 Up 09:09:08 - 09:39:08 3429
CU-SBO 09:24:09 -54.5 Dark Up 47.7 123.0 Up 09:09:09 - 09:39:09 3401
Cedarville 09:27:05 -63.4 Dark Up 37.4 110.5 Up 09:12:05 - 09:42:05 3377
Fall River/Burney 09:27:21 -64.4 Dark Up 36.8 109.2 Up 09:12:21 - 09:42:21 3316
Susanville 09:27:15 -64.4 Dark Up 37.5 109.3 Up 09:12:15 - 09:42:15 3256
Gimple 09:27:14 -64.7 Dark Up 37.4 108.9 Up 09:12:14 - 09:42:14 3224
Greenville 09:27:19 -64.7 Dark Up 37.4 108.9 Up 09:12:19 - 09:42:19 3224
Quincy 09:27:17 -64.8 Dark Up 37.4 108.7 Up 09:12:17 - 09:42:17 3202
Portola 09:27:16 -64.6 Dark Up 37.8 109.0 Up 09:12:16 - 09:42:16 3193
Reno 09:27:06 -64.3 Dark Up 38.4 109.3 Up 09:12:06 - 09:42:06 3171
Carson City 09:27:05 -64.5 Dark Up 38.5 109.1 Up 09:12:05 - 09:42:05 3133
Yerington 09:27:00 -64.2 Dark Up 39.0 109.5 Up 09:12:00 - 09:42:00 3118
Gardnerville 09:27:10 -64.6 Dark Up 38.6 109.0 Up 09:12:10 - 09:42:10 3107
Hawthorne 09:26:58 -64.1 Dark Up 39.5 109.5 Up 09:11:58 - 09:41:58 3073
Tonopah 09:26:42 -63.4 Dark Up 40.7 110.3 Up 09:11:42 - 09:41:42 3038
Lee Vining 09:27:04 -64.7 Dark Up 39.4 108.7 Up 09:12:04 - 09:42:04 3008
Bishop 09:26:57 -64.5 Dark Up 40.1 108.8 Up 09:11:57 - 09:41:57 2951
Beatty 09:26:40 -63.5 Dark Up 41.4 109.7 Up 09:11:40 - 09:41:40 2919
Indian Springs 09:26:27 -62.9 Dark Up 42.3 110.3 Up 09:11:27 - 09:41:27 2896
Henderson 09:26:19 -62.6 Dark Up 43.0 110.4 Up 09:11:19 - 09:41:19 2847
Patrick 09:26:05 -62.0 Dark Up 44.0 110.8 Up 09:11:05 - 09:41:05 2793
Kingman/Dolan Springs 09:26:09 -62.2 Dark Up 44.0 110.4 Up 09:11:09 - 09:41:09 2767
Laughlin/Bullhead City 09:26:13 -62.6 Dark Up 43.6 110.0 Up 09:11:13 - 09:41:13 2758
Mohave Valley 09:26:14 -62.7 Dark Up 43.7 109.8 Up 09:11:14 - 09:41:14 2729
Lake Havasu City 09:26:09 -62.6 Dark Up 44.0 109.6 Up 09:11:09 - 09:41:09 2689
Parker 09:26:11 -62.7 Dark Up 44.2 109.3 Up 09:11:11 - 09:41:11 2651
George/Scottsdale 09:25:39 -60.9 Dark Up 46.1 110.8 Up 09:10:39 - 09:40:39 2638
Wildwood 09:27:05 -65.9 Dark Up 40.9 106.0 Up 09:12:05 - 09:42:05 2597
Idyllwild 09:26:42 -64.6 Dark Up 42.5 107.1 Up 09:11:42 - 09:41:42 2579
Calipatria 09:26:28 -63.9 Dark Up 43.6 107.4 Up 09:11:28 - 09:41:28 2526
Yuma 09:26:18 -63.3 Dark Up 44.4 107.7 Up 09:11:18 - 09:41:18 2491

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 131696, (2024/12/13 09:11UT)
Object            RA         Dec     mag  sep  mel
Regulus        10:08:22.0 +11:58:02  1.3  1.55  95
31 Leo         10:07:54.2 +09:59:50  6.0  1.93  95
PPM 127247     10:15:09.6 +11:40:27  7.9  0.54  96
PPM 127224     10:13:50.4 +10:50:31  8.7  0.39  96
PPM 127220     10:13:31.6 +11:10:58 11.3  0.11  96
131696         10:13:55.5 +11:13:52 15.6        96
Positions are for J2000

Event circumstances last updated at 2022/03/31 23:00:37 UT

Marc W. Buie, Southwest Research Institute

RECON