RECON: TNO occultation with 05GF187

Event between 05GF187 and star GA0680:13943878 with event index number of 1277320

Geocentric closest approach at 2023/07/10 06:49:36 UTC

J2000 position of star is 17:34:49.0 -20:30:15
Equinox of date position of star is 17:36:12.2 -20:31:05
Stellar brightness G=16.6, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 116 degrees from the moon. Moon is 48% illuminated.
Apparent brightness V=22.8

[RECON map]
Object is 29.4 AU from the Sun and 28.5 AU from the Earth.
Apparent velocity is 20.8 km/sec on the sky relative to the star, or, 3.6 arcsec/hr.
The 1-sigma error in the time of the event is 458 seconds.
The 1-sigma cross-track error in the shadow position is 1445 km.
The sky-plane scale is 20643.9 km/arcsec.

The object has an absolute magnitude Hv=8.1
Diameter=142.6 km assuming a 5% albedo -- 6.9 sec chord
Diameter=58.2 km assuming a 30% albedo -- 2.8 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 

Star training set for 05GF187, (2023/07/10 06:50UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:51.2 -26:28:56  0.9 16.11 130
35Eta Oph      17:11:43.7 -15:45:09  2.6  7.52 122
PPM 267109     17:40:09.7 -21:55:28  6.4  1.68 115
PPM 267057     17:37:47.5 -20:59:25  8.4  0.60 116
PPM 267020     17:35:54.6 -20:26:41  9.4  0.10 116
05GF187        17:36:13.0 -20:31:05 16.6       116
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 2.0 sigma about the mid-time.
The median site spacing is 16.8 km RECON observability=0.9 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 06:49:16 -15.1 AT Down 18.6 186.1 Really Low 06:34:16 - 07:04:16 7673
Sleaford 06:48:31 -15.5 AT Up 15.2 199.8 Really Low 06:33:31 - 07:03:31 7645
Kelowna 06:49:12 -16.0 AT Down 19.4 187.0 Really Low 06:34:12 - 07:04:12 7640
Peachland 06:49:13 -16.1 AT Down 19.5 186.7 Really Low 06:34:13 - 07:04:13 7637
Summerland 06:49:12 -16.2 AT Down 19.6 186.8 Really Low 06:34:12 - 07:04:12 7631
Penticton 06:49:12 -16.3 AT Down 19.7 186.9 Really Low 06:34:12 - 07:04:12 7628
Oliver 06:49:12 -16.7 AT Down 20.0 187.0 Low 06:34:12 - 07:04:12 7614
Anarchist Mountain Observatory 06:49:11 -16.9 AT Down 20.2 187.2 Low 06:34:11 - 07:04:11 7608
Victoria 06:49:24 -16.4 AT Down 20.9 183.2 Low 06:34:24 - 07:04:24 7596
Okanogan 06:49:11 -17.4 AT Down 20.9 187.0 Low 06:34:11 - 07:04:11 7582
Brewster 06:49:12 -17.7 AT Down 21.1 186.8 Low 06:34:12 - 07:04:12 7572
Manson/Chelan 06:49:13 -17.8 AT Down 21.4 186.4 Low 06:34:13 - 07:04:13 7564
Wenatchee 06:49:14 -18.2 Dark Down 21.9 186.3 Low 06:34:14 - 07:04:14 7545
Ellensburg 06:49:15 -18.5 Dark Down 22.3 186.1 Low 06:34:15 - 07:04:15 7528
Yakima 06:49:15 -18.9 Dark Down 22.7 186.1 Low 06:34:15 - 07:04:15 7511
Toppenish/White Swan 06:49:14 -19.2 Dark Down 22.9 186.3 Low 06:34:14 - 07:04:14 7501
PNWRO 06:49:08 -19.8 Dark Down 23.1 187.8 Low 06:34:08 - 07:04:08 7480
The Dalles 06:49:16 -19.7 Dark Down 23.7 185.5 Low 06:34:16 - 07:04:16 7468
Maupin 06:49:16 -20.1 Dark Down 24.1 185.6 Low 06:34:16 - 07:04:16 7449
Sisters 06:49:17 -20.8 Dark Down 25.0 185.2 Low 06:34:17 - 07:04:17 7410
Bend 06:49:16 -21.1 Dark Down 25.3 185.4 Low 06:34:16 - 07:04:16 7398
Oregon Observatory 06:49:17 -21.2 Dark Down 25.4 185.3 Low 06:34:17 - 07:04:17 7390
Chiloquin 06:49:18 -22.4 Dark Down 26.8 184.9 Low 06:34:18 - 07:04:18 7326
Klamath Falls 06:49:17 -22.7 Dark Down 27.1 185.0 Low 06:34:17 - 07:04:17 7309
Cedarville 06:49:11 -23.8 Dark Down 27.7 186.7 Low 06:34:11 - 07:04:11 7269
Fall River/Burney 06:49:15 -23.9 Dark Down 28.3 185.5 Low 06:34:15 - 07:04:15 7246
Greenville 06:49:13 -24.9 Dark Down 29.1 186.0 Low 06:34:13 - 07:04:13 7196
Gimple 06:49:13 -24.9 Dark Down 29.1 186.1 Low 06:34:13 - 07:04:13 7196
Quincy 06:49:13 -25.1 Dark Down 29.3 186.0 Low 06:34:13 - 07:04:13 7185
Portola 06:49:11 -25.3 Dark Down 29.4 186.5 Low 06:34:11 - 07:04:11 7177
Reno 06:49:09 -25.7 Dark Down 29.6 187.2 Low 06:34:09 - 07:04:09 7161
Carson City 06:49:08 -26.1 Dark Down 30.0 187.3 Low 06:34:08 - 07:04:08 7140
Yerington 06:49:05 -26.4 Dark Down 30.1 188.0 Up 06:34:05 - 07:04:05 7127
Gardnerville 06:49:08 -26.3 Dark Down 30.2 187.3 Up 06:34:08 - 07:04:08 7126
Hawthorne 06:49:04 -27.0 Dark Down 30.5 188.6 Up 06:34:04 - 07:04:04 7099
Dunrhomin 06:48:12 -27.4 Dark Up 26.1 202.1 Low 06:33:12 - 07:03:12 7098
Nikitin 06:48:12 -27.5 Dark Up 26.3 202.1 Low 06:33:12 - 07:03:12 7088
CU-SBO 06:48:12 -27.6 Dark Up 26.4 202.0 Low 06:33:12 - 07:03:12 7086
Lee Vining 06:49:05 -27.4 Dark Down 31.1 188.1 Up 06:34:05 - 07:04:05 7068
Bishop 06:49:02 -28.2 Dark Down 31.6 188.9 Up 06:34:02 - 07:04:02 7030
Beatty 06:48:55 -29.0 Dark Down 31.9 190.7 Up 06:33:55 - 07:03:55 6995
Patrick 06:48:42 -31.0 Dark Down 32.8 194.0 Up 06:33:42 - 07:03:42 6886
Laughlin/Bullhead City 06:48:45 -31.1 Dark Down 33.2 193.3 Up 06:33:45 - 07:03:45 6875
Lake Havasu City 06:48:44 -31.8 Dark Down 33.8 193.7 Up 06:33:44 - 07:03:44 6831
Wildwood 06:49:01 -31.2 Dark Down 34.9 189.0 Up 06:34:01 - 07:04:01 6828
Idyllwild 06:48:53 -32.0 Dark Down 35.0 191.2 Up 06:33:53 - 07:03:53 6797
George/Scottsdale 06:48:33 -33.0 Dark Down 34.0 196.5 Up 06:33:33 - 07:03:33 6763
Calipatria 06:48:48 -32.9 Dark Down 35.4 192.6 Up 06:33:48 - 07:03:48 6749
Yuma 06:48:44 -33.5 Dark Down 35.6 193.6 Up 06:33:44 - 07:03:44 6714

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 05GF187, (2023/07/10 06:50UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 16.11 130
35Eta Oph      17:10:22.7 -15:43:29  2.6  7.52 122
PPM 267109     17:38:44.8 -21:54:46  6.4  1.68 115
PPM 267057     17:36:23.2 -20:58:38  8.4  0.60 116
PPM 267020     17:34:30.6 -20:25:51  9.4  0.10 116
05GF187        17:34:49.0 -20:30:15 16.6       116
Positions are for J2000

Event circumstances last updated at 2023/04/18 02:29:31 UT

Marc W. Buie, Southwest Research Institute

RECON