RECON: TNO occultation with 131318

Event between (131318) 01FL194 and star GA0620:06896156 with event index number of 1308440

Geocentric closest approach at 2024/05/17 07:07:45 UTC

J2000 position of star is 14:45:24.3 -26:34:34
Equinox of date position of star is 14:46:49.2 -26:40:36
Stellar brightness G=16.2, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 61 degrees from the moon. Moon is 67% illuminated.
Apparent brightness V=23.3

[RECON map]
Object is 34.7 AU from the Sun and 33.7 AU from the Earth.
Apparent velocity is 23.9 km/sec on the sky relative to the star, or, 3.5 arcsec/hr.
The 1-sigma error in the time of the event is 209 seconds.
The 1-sigma cross-track error in the shadow position is 3105 km.
The sky-plane scale is 24425.6 km/arcsec.

The object has an absolute magnitude Hv=7.9
Diameter=166.0 km assuming a 5% albedo -- 6.7 sec chord
Diameter=67.8 km assuming a 30% albedo -- 2.7 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 

Star training set for 131318, (2024/05/17 07:08UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:54.4 -26:29:02  0.9 23.23  83
5The Cen       14:08:07.7 -36:29:18  2.1 12.80  60
57 Hya         14:49:23.5 -26:44:49  6.0  0.58  62
PPM 263364     14:46:58.4 -27:02:40  8.4  0.37  62
PPM 263349     14:46:19.2 -26:59:51 10.0  0.34  61
131318         14:46:50.1 -26:40:40 16.2        62
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 4.3 sigma about the mid-time.
The median site spacing is 7.1 km RECON observability=0.6 and success probability=1.3%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Sleaford 07:08:22 -18.4 Dark Up 10.2 193.9 Really Low 06:53:22 - 07:23:22 7329
Kamloops 07:09:00 -19.0 Dark Up 12.7 180.9 Really Low 06:54:00 - 07:24:00 7066
Kelowna 07:08:58 -20.0 Dark Up 13.5 181.8 Really Low 06:53:58 - 07:23:58 7065
Peachland 07:08:58 -20.0 Dark Up 13.7 181.5 Really Low 06:53:58 - 07:23:58 7057
Penticton 07:08:57 -20.3 Dark Up 13.9 181.7 Really Low 06:53:57 - 07:23:57 7056
Summerland 07:08:58 -20.2 Dark Up 13.8 181.6 Really Low 06:53:58 - 07:23:58 7055
Anarchist Mountain Observatory 07:08:57 -20.8 Dark Up 14.4 181.8 Really Low 06:53:57 - 07:23:57 7047
Oliver 07:08:58 -20.6 Dark Up 14.2 181.7 Really Low 06:53:58 - 07:23:58 7047
Dunrhomin 07:08:04 -30.2 Dark Up 21.5 195.4 Low 06:53:04 - 07:23:04 7029
Okanogan 07:08:57 -21.4 Dark Up 15.0 181.6 Really Low 06:53:57 - 07:23:57 7025
Nikitin 07:08:04 -30.4 Dark Up 21.7 195.4 Low 06:53:04 - 07:23:04 7022
CU-SBO 07:08:05 -30.5 Dark Up 21.8 195.3 Low 06:53:05 - 07:23:05 7018
Brewster 07:08:58 -21.6 Dark Up 15.3 181.5 Really Low 06:53:58 - 07:23:58 7013
Manson/Chelan 07:08:58 -21.8 Dark Up 15.5 181.1 Really Low 06:53:58 - 07:23:58 7000
Wenatchee 07:08:59 -22.2 Dark Up 16.0 181.0 Really Low 06:53:59 - 07:23:59 6982
PNWRO 07:08:54 -23.8 Dark Up 17.4 182.3 Really Low 06:53:54 - 07:23:54 6972
Ellensburg 07:08:59 -22.6 Dark Up 16.4 180.8 Really Low 06:53:59 - 07:23:59 6966
Yakima 07:08:59 -23.0 Dark Up 16.8 180.8 Really Low 06:53:59 - 07:23:59 6953
Toppenish/White Swan 07:08:59 -23.2 Dark Up 17.0 180.9 Really Low 06:53:59 - 07:23:59 6950
Victoria 07:09:08 -20.7 Dark Up 14.9 178.1 Really Low 06:54:08 - 07:24:08 6945
The Dalles 07:09:01 -23.9 Dark Up 17.8 180.2 Really Low 06:54:01 - 07:24:01 6907
Maupin 07:09:00 -24.3 Dark Up 18.2 180.3 Really Low 06:54:00 - 07:24:00 6896
Sisters 07:09:01 -25.1 Dark Up 19.1 179.8 Really Low 06:54:01 - 07:24:01 6855
Bend 07:09:01 -25.3 Dark Up 19.4 180.1 Really Low 06:54:01 - 07:24:01 6853
Oregon Observatory 07:09:01 -25.5 Dark Up 19.5 179.9 Really Low 06:54:01 - 07:24:01 6844
Cedarville 07:08:56 -28.0 Dark Up 21.9 181.1 Low 06:53:56 - 07:23:56 6787
Chiloquin 07:09:01 -26.7 Dark Up 20.9 179.5 Low 06:54:01 - 07:24:01 6786
Klamath Falls 07:09:01 -27.0 Dark Up 21.2 179.6 Low 06:54:01 - 07:24:01 6775
Fall River/Burney 07:08:59 -28.3 Dark Up 22.4 180.0 Low 06:53:59 - 07:23:59 6737
Reno 07:08:53 -30.0 Dark Up 23.9 181.5 Low 06:53:53 - 07:23:53 6715
Gimple 07:08:57 -29.2 Dark Up 23.3 180.5 Low 06:53:57 - 07:23:57 6713
Greenville 07:08:57 -29.2 Dark Up 23.3 180.4 Low 06:53:57 - 07:23:57 6712
Portola 07:08:56 -29.6 Dark Up 23.6 180.9 Low 06:53:56 - 07:23:56 6710
Yerington 07:08:51 -30.6 Dark Up 24.4 182.1 Low 06:53:51 - 07:23:51 6707
Quincy 07:08:57 -29.4 Dark Up 23.5 180.4 Low 06:53:57 - 07:23:57 6703
Carson City 07:08:52 -30.3 Dark Up 24.2 181.5 Low 06:53:52 - 07:23:52 6700
Hawthorne 07:08:48 -31.2 Dark Up 24.8 182.7 Low 06:53:48 - 07:23:48 6700
Gardnerville 07:08:53 -30.6 Dark Up 24.5 181.6 Low 06:53:53 - 07:23:53 6691
Beatty 07:08:41 -33.0 Dark Up 26.4 184.5 Low 06:53:41 - 07:23:41 6671
Patrick 07:08:29 -34.9 Dark Up 27.6 187.5 Low 06:53:29 - 07:23:29 6667
Lee Vining 07:08:50 -31.7 Dark Up 25.4 182.2 Low 06:53:50 - 07:23:50 6663
Bishop 07:08:46 -32.4 Dark Up 26.0 182.9 Low 06:53:46 - 07:23:46 6653
Laughlin/Bullhead City 07:08:31 -35.0 Dark Up 27.9 186.8 Low 06:53:31 - 07:23:31 6639
George/Scottsdale 07:08:20 -36.7 Dark Up 29.1 189.6 Low 06:53:20 - 07:23:20 6627
Lake Havasu City 07:08:30 -35.7 Dark Up 28.6 187.1 Low 06:53:30 - 07:23:30 6612
Idyllwild 07:08:39 -36.2 Dark Up 29.5 184.7 Low 06:53:39 - 07:23:39 6519
Calipatria 07:08:32 -36.9 Dark Up 30.1 185.9 Up 06:53:32 - 07:23:32 6515
Yuma 07:08:30 -37.5 Dark Up 30.4 186.9 Up 06:53:30 - 07:23:30 6513
Wildwood 07:08:45 -35.5 Dark Up 29.3 182.8 Low 06:53:45 - 07:23:45 6490

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 131318, (2024/05/17 07:08UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 23.23  83
5The Cen       14:06:40.0 -36:22:23  2.1 12.80  60
57 Hya         14:47:57.5 -26:38:47  6.0  0.58  62
PPM 263364     14:45:32.4 -26:56:34  8.4  0.37  62
PPM 263349     14:44:53.2 -26:53:45 10.0  0.34  61
131318         14:45:24.3 -26:34:34 16.2        61
Positions are for J2000

Event circumstances last updated at 2024/02/12 04:23:00 UT

Marc W. Buie, Southwest Research Institute

RECON