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 09:09:59 UTC

J2000 position of star is 10:13:55.5 +11:13:52
Equinox of date position of star is 10:15:09.5 +11:06:55
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.
Apparent brightness V=23.3

[RECON map]
Object is 36.3 AU from the Sun and 35.9 AU from the Earth.
Apparent velocity is 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 598 seconds.
The 1-sigma cross-track error in the shadow position is 1776 km.
The sky-plane scale is 26064.1 km/arcsec.

The object has an absolute magnitude Hv=7.6
Diameter=199.5 km assuming a 5% albedo -- 37.6 sec chord
Diameter=81.5 km assuming a 30% albedo -- 15.4 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 1.5 sigma about the mid-time.
The median site spacing is 35.0 km RECON observability=1.0 and success probability=13.9%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Sleaford 09:22:25 -50.1 Dark Up 39.8 131.0 Up 09:07:25 - 09:37:25 4408
Kamloops 09:25:02 -57.5 Dark Up 33.4 115.8 Up 09:10:02 - 09:40:02 4130
Kelowna 09:24:58 -57.7 Dark Up 34.2 116.2 Up 09:09:58 - 09:39:58 4056
Peachland 09:25:00 -58.0 Dark Up 34.1 115.8 Up 09:10:00 - 09:40:00 4043
Summerland 09:25:00 -58.0 Dark Up 34.2 115.8 Up 09:10:00 - 09:40:00 4029
Penticton 09:25:00 -58.0 Dark Up 34.3 115.9 Up 09:10:00 - 09:40:00 4023
Oliver 09:25:04 -58.3 Dark Up 34.5 115.7 Up 09:10:04 - 09:40:04 3988
Anarchist Mountain Observatory 09:25:02 -58.3 Dark Up 34.7 115.8 Up 09:10:02 - 09:40:02 3973
Okanogan 09:25:07 -58.9 Dark Up 34.8 115.2 Up 09:10:07 - 09:40:07 3906
Victoria 09:25:42 -60.4 Dark Up 32.5 111.9 Up 09:10:42 - 09:40:42 3897
Brewster 09:25:10 -59.2 Dark Up 34.8 114.8 Up 09:10:10 - 09:40:10 3878
Manson/Chelan 09:25:16 -59.5 Dark Up 34.7 114.4 Up 09:10:16 - 09:40:16 3854
Wenatchee 09:25:19 -59.9 Dark Up 34.8 113.9 Up 09:10:19 - 09:40:19 3805
Ellensburg 09:25:26 -60.3 Dark Up 34.9 113.5 Up 09:10:26 - 09:40:26 3761
Yakima 09:25:25 -60.6 Dark Up 35.0 113.2 Up 09:10:25 - 09:40:25 3720
Toppenish/White Swan 09:25:27 -60.6 Dark Up 35.2 113.2 Up 09:10:27 - 09:40:27 3699
PNWRO 09:25:10 -60.2 Dark Up 36.3 114.3 Up 09:10:10 - 09:40:10 3673
The Dalles 09:25:38 -61.5 Dark Up 35.0 112.1 Up 09:10:38 - 09:40:38 3614
Maupin 09:25:40 -61.8 Dark Up 35.2 111.9 Up 09:10:40 - 09:40:40 3571
Sisters 09:25:48 -62.6 Dark Up 35.3 110.9 Up 09:10:48 - 09:40:48 3477
Bend 09:25:47 -62.7 Dark Up 35.5 111.0 Up 09:10:47 - 09:40:47 3454
Oregon Observatory 09:25:46 -62.8 Dark Up 35.5 110.7 Up 09:10:46 - 09:40:46 3435
Chiloquin 09:26:00 -63.9 Dark Up 35.7 109.5 Up 09:11:00 - 09:41:00 3295
Klamath Falls 09:26:00 -64.1 Dark Up 35.9 109.4 Up 09:11:00 - 09:41:00 3260
Dunrhomin 09:22:49 -54.6 Dark Up 47.4 122.9 Up 09:07:49 - 09:37:49 3248
Nikitin 09:22:46 -54.7 Dark Up 47.5 122.7 Up 09:07:46 - 09:37:46 3229
CU-SBO 09:22:48 -54.7 Dark Up 47.5 122.6 Up 09:07:48 - 09:37:48 3221
Cedarville 09:25:46 -63.6 Dark Up 37.2 110.2 Up 09:10:46 - 09:40:46 3199
Fall River/Burney 09:25:55 -64.6 Dark Up 36.5 108.9 Up 09:10:55 - 09:40:55 3139
Gimple 09:25:58 -64.8 Dark Up 37.2 108.7 Up 09:10:58 - 09:40:58 3047
Greenville 09:25:55 -64.9 Dark Up 37.1 108.6 Up 09:10:55 - 09:40:55 3046
Quincy 09:26:00 -65.0 Dark Up 37.2 108.5 Up 09:11:00 - 09:41:00 3025
Portola 09:25:55 -64.8 Dark Up 37.6 108.8 Up 09:10:55 - 09:40:55 3015
Reno 09:25:49 -64.5 Dark Up 38.1 109.1 Up 09:10:49 - 09:40:49 2993
Carson City 09:25:50 -64.7 Dark Up 38.3 108.8 Up 09:10:50 - 09:40:50 2955
Yerington 09:25:42 -64.4 Dark Up 38.8 109.2 Up 09:10:42 - 09:40:42 2940
Gardnerville 09:25:50 -64.8 Dark Up 38.4 108.7 Up 09:10:50 - 09:40:50 2929
Hawthorne 09:25:37 -64.3 Dark Up 39.3 109.3 Up 09:10:37 - 09:40:37 2895
Lee Vining 09:25:46 -64.9 Dark Up 39.1 108.4 Up 09:10:46 - 09:40:46 2830
Bishop 09:25:37 -64.7 Dark Up 39.8 108.5 Up 09:10:37 - 09:40:37 2773
Beatty 09:25:20 -63.8 Dark Up 41.2 109.5 Up 09:10:20 - 09:40:20 2740
Patrick 09:24:45 -62.3 Dark Up 43.8 110.5 Up 09:09:45 - 09:39:45 2614
Laughlin/Bullhead City 09:24:55 -62.9 Dark Up 43.3 109.7 Up 09:09:55 - 09:39:55 2579
Lake Havasu City 09:24:49 -62.9 Dark Up 43.7 109.3 Up 09:09:49 - 09:39:49 2510
George/Scottsdale 09:24:18 -61.2 Dark Up 45.8 110.5 Up 09:09:18 - 09:39:18 2458
Wildwood 09:25:47 -66.2 Dark Up 40.7 105.8 Up 09:10:47 - 09:40:47 2419
Idyllwild 09:25:25 -64.9 Dark Up 42.2 106.8 Up 09:10:25 - 09:40:25 2400
Calipatria 09:25:08 -64.2 Dark Up 43.3 107.2 Up 09:10:08 - 09:40:08 2347
Yuma 09:24:55 -63.6 Dark Up 44.1 107.4 Up 09:09:55 - 09:39:55 2312

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 2023/03/04 04:03:09 UT

Marc W. Buie, Southwest Research Institute

RECON