RECON: TNO occultation with 134340

Event between (134340) Pluto and star GA0660:38365784 with event index number of 2038831

Geocentric closest approach at 2023/08/05 06:14:40 UTC

J2000 position of star is 20:04:40.8 -23:06:46
Equinox of date position of star is 20:06:04.9 -23:02:40
Stellar brightness G=15.0, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 63 degrees from the moon. Moon is 83% illuminated.
Apparent brightness V=15.0

[RECON map]
Object is 34.8 AU from the Sun and 33.8 AU from the Earth.
Apparent velocity is 23.5 km/sec on the sky relative to the star, or, 3.4 arcsec/hr.
The 1-sigma error in the time of the event is 54 seconds.
The 1-sigma cross-track error in the shadow position is 1233 km.
The sky-plane scale is 24541.4 km/arcsec.

The object has an absolute magnitude Hv=-0.4
Diameter=7379.3 km assuming a 5% albedo -- 315.8 sec chord
Diameter=3012.6 km assuming a 30% albedo -- 128.9 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 

Star training set for 134340, (2023/08/05 06:15UT)
Object            RA         Dec     mag  sep  mel
Fomalhaut      22:58:56.9 -29:29:48  1.2 39.07  33
38Zet Sgr      19:04:06.6 -29:50:40  2.7 15.43  78
PPM 270580     20:02:47.8 -22:40:15  6.0  0.84  64
PPM 270623     20:04:53.3 -22:53:17  8.1  0.32  63
PPM 270672     20:06:44.1 -23:04:43  9.8  0.15  63
134340         20:06:04.9 -23:02:40 15.0        63
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 0.0 km RECON observability=0.6 and success probability=0.0%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kamloops 06:14:17 -17.9 AT Up 15.1 166.3 Really Low 06:09:18 - 06:19:16 10433
Victoria 06:14:27 -18.8 Dark Up 16.7 163.3 Really Low 06:09:28 - 06:19:26 10404
Peachland 06:14:16 -18.9 Dark Up 16.1 166.8 Really Low 06:09:17 - 06:19:15 10402
Kelowna 06:14:15 -18.9 Dark Up 16.0 167.1 Really Low 06:09:16 - 06:19:14 10401
Summerland 06:14:16 -19.0 Dark Up 16.3 166.9 Really Low 06:09:17 - 06:19:15 10397
Penticton 06:14:16 -19.1 Dark Up 16.3 167.0 Really Low 06:09:17 - 06:19:15 10393
Oliver 06:14:16 -19.4 Dark Up 16.7 166.9 Really Low 06:09:17 - 06:19:15 10383
Anarchist Mountain Observatory 06:14:15 -19.6 Dark Up 16.9 167.1 Really Low 06:09:16 - 06:19:14 10377
Okanogan 06:14:17 -20.2 Dark Up 17.5 166.9 Really Low 06:09:18 - 06:19:16 10360
Brewster 06:14:16 -20.3 Dark Up 17.7 166.6 Really Low 06:09:17 - 06:19:15 10354
Manson/Chelan 06:14:20 -20.4 Dark Up 17.9 166.3 Really Low 06:09:21 - 06:19:19 10352
Wenatchee 06:14:20 -20.8 Dark Up 18.3 166.1 Really Low 06:09:21 - 06:19:19 10339
Ellensburg 06:14:21 -21.0 Dark Up 18.7 165.9 Really Low 06:09:22 - 06:19:20 10328
Yakima 06:14:23 -21.4 Dark Up 19.1 165.8 Really Low 06:09:24 - 06:19:22 10315
Toppenish/White Swan 06:14:22 -21.6 Dark Up 19.3 166.0 Really Low 06:09:23 - 06:19:21 10306
The Dalles 06:14:26 -22.1 Dark Up 19.9 165.1 Really Low 06:09:27 - 06:19:25 10288
PNWRO 06:14:18 -22.5 Dark Up 19.9 167.3 Really Low 06:09:19 - 06:19:17 10275
Maupin 06:14:26 -22.5 Dark Up 20.3 165.2 Low 06:09:27 - 06:19:25 10272
Sleaford 06:13:35 -19.8 Dark Up 14.8 179.9 Really Low 06:08:36 - 06:18:34 10268
Sisters 06:14:28 -23.0 Dark Up 21.1 164.6 Low 06:09:29 - 06:19:27 10246
Bend 06:14:29 -23.3 Dark Up 21.4 164.9 Low 06:09:30 - 06:19:28 10235
Oregon Observatory 06:14:28 -23.4 Dark Up 21.5 164.7 Low 06:09:29 - 06:19:27 10230
Chiloquin 06:14:32 -24.4 Dark Up 22.7 164.2 Low 06:09:33 - 06:19:31 10183
Klamath Falls 06:14:32 -24.7 Dark Up 23.1 164.2 Low 06:09:33 - 06:19:31 10168
Cedarville 06:14:28 -25.9 Dark Up 24.0 165.7 Low 06:09:29 - 06:19:27 10120
Fall River/Burney 06:14:32 -25.9 Dark Up 24.3 164.5 Low 06:09:33 - 06:19:31 10114
Greenville 06:14:32 -26.8 Dark Up 25.2 164.8 Low 06:09:33 - 06:19:31 10069
Gimple 06:14:32 -26.9 Dark Up 25.3 164.9 Low 06:09:33 - 06:19:31 10068
Quincy 06:14:32 -27.0 Dark Up 25.4 164.8 Low 06:09:33 - 06:19:31 10060
Portola 06:14:31 -27.3 Dark Up 25.6 165.2 Low 06:09:32 - 06:19:30 10049
Reno 06:14:30 -27.8 Dark Up 26.0 165.9 Low 06:09:31 - 06:19:29 10028
Carson City 06:14:29 -28.1 Dark Up 26.4 165.8 Low 06:09:30 - 06:19:28 10011
Gardnerville 06:14:29 -28.3 Dark Up 26.6 165.8 Low 06:09:30 - 06:19:28 9999
Yerington 06:14:28 -28.5 Dark Up 26.7 166.4 Low 06:09:29 - 06:19:27 9993
Hawthorne 06:14:25 -29.1 Dark Up 27.2 166.9 Low 06:09:26 - 06:19:24 9964
Lee Vining 06:14:28 -29.4 Dark Up 27.7 166.4 Low 06:09:29 - 06:19:27 9944
Bishop 06:14:27 -30.2 Dark Up 28.4 167.0 Low 06:09:28 - 06:19:26 9904
Beatty 06:14:21 -31.3 Dark Up 29.1 168.6 Low 06:09:22 - 06:19:20 9855
Dunrhomin 06:13:38 -31.4 Dark Up 26.6 180.6 Low 06:08:39 - 06:18:37 9804
Nikitin 06:13:39 -31.6 Dark Up 26.8 180.6 Low 06:08:40 - 06:18:38 9795
CU-SBO 06:13:38 -31.6 Dark Up 26.9 180.5 Low 06:08:39 - 06:18:37 9794
Wildwood 06:14:31 -33.0 Dark Up 31.6 166.4 Up 06:09:32 - 06:19:30 9734
Patrick 06:14:13 -33.6 Dark Up 31.0 171.5 Up 06:09:14 - 06:19:12 9729
Laughlin/Bullhead City 06:14:15 -33.6 Dark Up 31.1 170.7 Up 06:09:16 - 06:19:14 9727
Lake Havasu City 06:14:16 -34.3 Dark Up 31.8 170.9 Up 06:09:17 - 06:19:15 9686
Idyllwild 06:14:25 -34.1 Dark Up 32.2 168.3 Up 06:09:26 - 06:19:24 9685
Calipatria 06:14:21 -35.1 Dark Up 33.0 169.5 Up 06:09:22 - 06:19:20 9629
George/Scottsdale 06:14:08 -35.8 Dark Up 32.9 173.5 Up 06:09:09 - 06:19:07 9596
Yuma 06:14:18 -35.8 Dark Up 33.6 170.4 Up 06:09:19 - 06:19:17 9589

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 134340, (2023/08/05 06:15UT)
Object            RA         Dec     mag  sep  mel
Fomalhaut      22:57:39.6 -29:37:24  1.2 39.07  33
38Zet Sgr      19:02:36.7 -29:52:49  2.7 15.43  78
PPM 270580     20:01:23.9 -22:44:15  6.0  0.84  64
PPM 270623     20:03:29.3 -22:57:21  8.1  0.32  63
PPM 270672     20:05:20.1 -23:08:50  9.8  0.15  63
134340         20:04:40.8 -23:06:46 15.0        63
Positions are for J2000

Event circumstances last updated at 2023/08/05 03:10:59 UT

Marc W. Buie, Southwest Research Institute

RECON