RECON: TNO occultation with 14GJ54

Event between 14GJ54 and star GA0720:06286524 with event index number of 2477636

Geocentric closest approach at 2023/05/11 07:23:29 UTC

J2000 position of star is 16:34:33.4 -16:56:14
Equinox of date position of star is 16:35:53.9 -16:59:03
Stellar brightness G=16.9, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 55 degrees from the moon. Moon is 65% illuminated.
Apparent brightness V=22.1

[RECON map]
Object is 29.1 AU from the Sun and 28.1 AU from the Earth.
Apparent velocity is 21.9 km/sec on the sky relative to the star, or, 3.9 arcsec/hr.
The 1-sigma error in the time of the event is 202 seconds.
The 1-sigma cross-track error in the shadow position is 1594 km.
The sky-plane scale is 20389.1 km/arcsec.

The object has an absolute magnitude Hv=7.5
Diameter=193.2 km assuming a 5% albedo -- 8.8 sec chord
Diameter=78.9 km assuming a 30% albedo -- 3.6 sec chord
Dynamical classification is 3:2E+6:4II
 
 
 
 
 
 

Star training set for 14GJ54, (2023/05/11 07:23UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:50.6 -26:28:54  0.9  9.57  53
13Zet Oph      16:38:26.8 -10:36:45  2.6  6.40  56
8Phi Oph       16:32:28.8 -16:39:42  4.0  0.88  55
PPM 231927     16:38:57.9 -16:53:43  8.3  0.74  54
PPM 231866     16:35:57.0 -16:57:53  9.8  0.02  55
14GJ54         16:35:54.1 -16:59:03 16.9        54
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 4.5 sigma about the mid-time.
The median site spacing is 10.9 km RECON observability=0.8 and success probability=0.2%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Sleaford 07:25:22 -19.9 Dark Down 19.9 165.4 Really Low 07:10:22 - 07:40:22 6367
Kamloops 07:26:03 -21.1 Dark Down 17.9 151.2 Really Low 07:11:03 - 07:41:03 5951
Kelowna 07:26:01 -22.0 Dark Down 18.8 151.9 Really Low 07:11:01 - 07:41:01 5929
Peachland 07:26:03 -22.1 Dark Down 18.9 151.6 Really Low 07:11:03 - 07:41:03 5916
Summerland 07:26:03 -22.3 Dark Down 19.0 151.7 Really Low 07:11:03 - 07:41:03 5910
Penticton 07:26:02 -22.3 Dark Down 19.1 151.8 Really Low 07:11:02 - 07:41:02 5909
Oliver 07:26:03 -22.7 Dark Down 19.4 151.7 Really Low 07:11:03 - 07:41:03 5889
Anarchist Mountain Observatory 07:26:02 -22.9 Dark Down 19.6 151.9 Really Low 07:11:02 - 07:41:02 5885
Okanogan 07:26:04 -23.5 Dark Down 20.1 151.5 Low 07:11:04 - 07:41:04 5842
Brewster 07:26:04 -23.7 Dark Down 20.3 151.3 Low 07:11:04 - 07:41:04 5821
Manson/Chelan 07:26:06 -23.9 Dark Down 20.4 150.9 Low 07:11:06 - 07:41:06 5798
Wenatchee 07:26:07 -24.4 Dark Down 20.7 150.7 Low 07:11:07 - 07:41:07 5766
Victoria 07:26:13 -22.9 Dark Down 18.7 148.0 Really Low 07:11:13 - 07:41:13 5747
Dunrhomin 07:25:23 -31.5 Dark Down 31.4 164.7 Up 07:10:23 - 07:40:23 5745
Ellensburg 07:26:07 -24.8 Dark Down 21.0 150.4 Low 07:11:07 - 07:41:07 5735
Nikitin 07:25:23 -31.7 Dark Down 31.6 164.6 Up 07:10:23 - 07:40:23 5732
CU-SBO 07:25:23 -31.8 Dark Down 31.6 164.5 Up 07:10:23 - 07:40:23 5726
PNWRO 07:26:04 -25.9 Dark Down 22.4 151.8 Low 07:11:04 - 07:41:04 5721
Yakima 07:26:09 -25.2 Dark Down 21.4 150.3 Low 07:11:09 - 07:41:09 5710
Toppenish/White Swan 07:26:08 -25.4 Dark Down 21.6 150.4 Low 07:11:08 - 07:41:08 5701
The Dalles 07:26:11 -26.1 Dark Down 22.0 149.5 Low 07:11:11 - 07:41:11 5631
Maupin 07:26:11 -26.5 Dark Down 22.4 149.5 Low 07:11:11 - 07:41:11 5608
Sisters 07:26:13 -27.3 Dark Down 23.0 148.9 Low 07:11:13 - 07:41:13 5538
Bend 07:26:12 -27.6 Dark Down 23.3 149.1 Low 07:11:12 - 07:41:12 5530
Oregon Observatory 07:26:14 -27.7 Dark Down 23.4 148.9 Low 07:11:14 - 07:41:14 5515
Chiloquin 07:26:17 -29.0 Dark Down 24.4 148.2 Low 07:11:17 - 07:41:17 5416
Cedarville 07:26:12 -30.2 Dark Down 25.9 149.6 Low 07:11:12 - 07:41:12 5396
Klamath Falls 07:26:17 -29.3 Dark Down 24.7 148.2 Low 07:11:17 - 07:41:17 5395
Fall River/Burney 07:26:16 -30.5 Dark Down 25.8 148.3 Low 07:11:16 - 07:41:16 5326
Gimple 07:26:15 -31.5 Dark Down 26.8 148.6 Low 07:11:15 - 07:41:15 5279
Greenville 07:26:15 -31.5 Dark Down 26.8 148.5 Low 07:11:15 - 07:41:15 5277
Reno 07:26:13 -32.2 Dark Down 27.7 149.4 Low 07:11:13 - 07:41:13 5270
Portola 07:26:14 -31.9 Dark Down 27.3 148.9 Low 07:11:14 - 07:41:14 5269
Quincy 07:26:15 -31.7 Dark Down 27.0 148.4 Low 07:11:15 - 07:41:15 5263
Yerington 07:26:10 -32.8 Dark Down 28.5 149.9 Low 07:11:10 - 07:41:10 5252
Carson City 07:26:13 -32.6 Dark Down 28.1 149.4 Low 07:11:13 - 07:41:13 5246
Hawthorne 07:26:09 -33.3 Dark Down 29.1 150.3 Low 07:11:09 - 07:41:09 5235
Gardnerville 07:26:12 -32.8 Dark Down 28.3 149.3 Low 07:11:12 - 07:41:12 5230
Lee Vining 07:26:10 -33.8 Dark Down 29.4 149.7 Low 07:11:10 - 07:41:10 5180
Beatty 07:26:04 -35.1 Dark Down 31.2 151.7 Up 07:11:04 - 07:41:04 5177
Patrick 07:25:55 -36.7 Dark Down 33.6 154.3 Up 07:10:55 - 07:40:55 5160
Bishop 07:26:09 -34.5 Dark Down 30.2 150.2 Up 07:11:09 - 07:41:09 5159
Laughlin/Bullhead City 07:25:57 -37.0 Dark Down 33.5 153.5 Up 07:10:57 - 07:40:57 5119
George/Scottsdale 07:25:48 -38.4 Dark Down 35.8 156.0 Up 07:10:48 - 07:40:48 5097
Lake Havasu City 07:25:56 -37.6 Dark Down 34.2 153.5 Up 07:10:56 - 07:40:56 5077
Idyllwild 07:26:04 -38.3 Dark Down 34.0 150.8 Up 07:11:04 - 07:41:04 4943
Calipatria 07:26:00 -38.9 Dark Down 35.0 151.8 Up 07:11:00 - 07:41:00 4935
Yuma 07:25:57 -39.4 Dark Down 35.7 152.6 Up 07:10:57 - 07:40:57 4931
Wildwood 07:26:11 -37.7 Dark Down 32.9 149.0 Up 07:11:11 - 07:41:11 4908

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 14GJ54, (2023/05/11 07:23UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9  9.57  53
13Zet Oph      16:37:09.6 -10:34:01  2.6  6.40  56
8Phi Oph       16:31:08.3 -16:36:47  4.0  0.88  55
PPM 231927     16:37:37.2 -16:50:59  8.3  0.74  54
PPM 231866     16:34:36.3 -16:55:04  9.8  0.02  55
14GJ54         16:34:33.4 -16:56:14 16.9        55
Positions are for J2000

Event circumstances last updated at 2023/04/19 02:34:16 UT

Marc W. Buie, Southwest Research Institute

RECON