RECON: TNO occultation with 14GJ54

Event between 14GJ54 and star GA0720:06574975 with event index number of 2477705

Geocentric closest approach at 2024/02/18 12:21:07 UTC

J2000 position of star is 16:47:49.4 -16:59:58
Equinox of date position of star is 16:49:13.0 -17:02:27
Stellar brightness G=15.0, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 166 degrees from the moon. Moon is 69% illuminated.
Apparent brightness V=22.3

[RECON map]
Object is 29.0 AU from the Sun and 29.2 AU from the Earth.
Apparent velocity is 14.2 km/sec on the sky relative to the star, or, 2.4 arcsec/hr.
The 1-sigma error in the time of the event is 379 seconds.
The 1-sigma cross-track error in the shadow position is 2166 km.
The sky-plane scale is 21180.0 km/arcsec.

The object has an absolute magnitude Hv=7.5
Diameter=193.2 km assuming a 5% albedo -- 13.7 sec chord
Diameter=78.9 km assuming a 30% albedo -- 5.6 sec chord
Dynamical classification is 3:2E+6:4II
 
 
 
 
 
 

Star training set for 14GJ54, (2024/02/18 12:21UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:53.5 -26:29:00  0.9 10.35 168
35Eta Oph      17:11:45.8 -15:45:11  2.6  5.56 167
PPM 232198     16:50:50.6 -15:42:30  6.3  1.39 165
PPM 232134     16:47:28.9 -16:56:35  8.4  0.43 166
PPM 232168     16:49:02.7 -16:59:54  9.5  0.06 166
14GJ54         16:49:13.0 -17:02:27 15.0       167
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 2.4 sigma about the mid-time.
The median site spacing is 20.0 km RECON observability=0.5 and success probability=5.2%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Sleaford 12:20:34 -18.0 AT Down 17.6 155.1 Really Low 12:05:34 - 12:35:34 3070
Kamloops 12:19:26 -27.2 Dark Down 14.0 141.2 Really Low 12:04:26 - 12:34:26 3033
Kelowna 12:19:26 -26.9 Dark Down 15.0 141.9 Really Low 12:04:26 - 12:34:26 3005
Peachland 12:19:24 -27.1 Dark Down 14.9 141.6 Really Low 12:04:24 - 12:34:24 3001
Summerland 12:19:23 -27.1 Dark Down 15.1 141.6 Really Low 12:04:23 - 12:34:23 2995
Penticton 12:19:24 -27.0 Dark Down 15.2 141.7 Really Low 12:04:24 - 12:34:24 2993
Oliver 12:19:23 -27.1 Dark Down 15.5 141.7 Really Low 12:04:23 - 12:34:23 2979
Anarchist Mountain Observatory 12:19:22 -27.0 Dark Down 15.7 141.8 Really Low 12:04:22 - 12:34:22 2973
Okanogan 12:19:18 -27.4 Dark Down 16.1 141.5 Really Low 12:04:18 - 12:34:18 2947
Victoria 12:19:04 -29.8 Dark Down 14.3 138.1 Really Low 12:04:04 - 12:34:04 2941
Brewster 12:19:17 -27.6 Dark Down 16.2 141.2 Really Low 12:04:17 - 12:34:17 2935
Manson/Chelan 12:19:14 -27.8 Dark Down 16.2 140.9 Really Low 12:04:14 - 12:34:14 2926
Wenatchee 12:19:11 -28.1 Dark Down 16.5 140.6 Really Low 12:04:11 - 12:34:11 2905
Ellensburg 12:19:08 -28.3 Dark Down 16.7 140.3 Really Low 12:04:08 - 12:34:08 2888
Yakima 12:19:06 -28.5 Dark Down 17.0 140.2 Really Low 12:04:06 - 12:34:06 2870
Toppenish/White Swan 12:19:06 -28.4 Dark Down 17.3 140.3 Really Low 12:04:06 - 12:34:06 2861
PNWRO 12:19:10 -27.4 Dark Down 18.2 141.6 Really Low 12:04:10 - 12:34:10 2848
The Dalles 12:18:59 -29.1 Dark Down 17.5 139.4 Really Low 12:03:59 - 12:33:59 2824
Maupin 12:18:58 -29.2 Dark Down 17.9 139.4 Really Low 12:03:58 - 12:33:58 2805
Sisters 12:18:52 -29.7 Dark Down 18.3 138.8 Really Low 12:03:52 - 12:33:52 2763
Bend 12:18:53 -29.6 Dark Down 18.6 139.0 Really Low 12:03:53 - 12:33:53 2752
Oregon Observatory 12:18:51 -29.7 Dark Down 18.6 138.8 Really Low 12:03:51 - 12:33:51 2744
Chiloquin 12:18:43 -30.3 Dark Down 19.4 138.1 Really Low 12:03:43 - 12:33:43 2677
Klamath Falls 12:18:41 -30.4 Dark Down 19.7 138.1 Really Low 12:03:41 - 12:33:41 2660
Cedarville 12:18:47 -29.3 Dark Down 21.0 139.4 Low 12:03:47 - 12:33:47 2629
Fall River/Burney 12:18:39 -30.3 Dark Down 20.8 138.1 Low 12:03:39 - 12:33:39 2599
Gimple 12:18:38 -30.1 Dark Down 21.7 138.4 Low 12:03:38 - 12:33:38 2552
Greenville 12:18:36 -30.2 Dark Down 21.7 138.3 Low 12:03:36 - 12:33:36 2552
Dunrhomin 12:20:01 -17.9 AT Down 28.5 153.6 Low 12:05:01 - 12:35:01 2542
Quincy 12:18:35 -30.2 Dark Down 21.8 138.2 Low 12:03:35 - 12:33:35 2540
Portola 12:18:38 -29.9 Dark Down 22.2 138.6 Low 12:03:38 - 12:33:38 2535
Nikitin 12:20:00 -17.9 AT Down 28.7 153.5 Low 12:05:00 - 12:35:00 2532
CU-SBO 12:19:59 -18.0 AT Down 28.7 153.4 Low 12:04:59 - 12:34:59 2529
Reno 12:18:40 -29.4 Dark Down 22.7 139.1 Low 12:03:40 - 12:33:40 2522
Carson City 12:18:38 -29.5 Dark Down 23.0 139.0 Low 12:03:38 - 12:33:38 2502
Yerington 12:18:41 -29.0 Dark Down 23.4 139.6 Low 12:03:41 - 12:33:41 2493
Gardnerville 12:18:37 -29.5 Dark Down 23.2 139.0 Low 12:03:37 - 12:33:37 2489
Hawthorne 12:18:41 -28.6 Dark Down 24.1 139.9 Low 12:03:41 - 12:33:41 2467
Lee Vining 12:18:38 -29.1 Dark Down 24.2 139.3 Low 12:03:38 - 12:33:38 2434
Bishop 12:18:39 -28.6 Dark Down 25.1 139.8 Low 12:03:39 - 12:33:39 2400
Beatty 12:18:45 -27.4 Dark Down 26.3 141.1 Low 12:03:45 - 12:33:45 2375
Patrick 12:18:54 -25.1 Dark Down 28.9 143.4 Low 12:03:54 - 12:33:54 2284
Laughlin/Bullhead City 12:18:50 -25.7 Dark Down 28.7 142.6 Low 12:03:50 - 12:33:50 2269
Lake Havasu City 12:18:49 -25.6 Dark Down 29.4 142.6 Low 12:03:49 - 12:33:49 2226
Wildwood 12:18:24 -29.2 Dark Down 27.4 138.5 Low 12:03:24 - 12:33:24 2197
Idyllwild 12:18:34 -27.6 Dark Down 28.7 140.1 Low 12:03:34 - 12:33:34 2177
George/Scottsdale 12:19:01 -23.5 Dark Down 31.3 144.7 Up 12:04:01 - 12:34:01 2174
Calipatria 12:18:38 -26.7 Dark Down 29.8 141.0 Low 12:03:38 - 12:33:38 2137
Yuma 12:18:41 -25.9 Dark Down 30.6 141.6 Up 12:03:41 - 12:33:41 2109

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, (2024/02/18 12:21UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 10.35 168
35Eta Oph      17:10:22.7 -15:43:29  2.6  5.56 167
PPM 232198     16:49:27.7 -15:40:05  6.3  1.39 165
PPM 232134     16:46:05.4 -16:54:03  8.4  0.43 166
PPM 232168     16:47:39.1 -16:57:25  9.5  0.06 166
14GJ54         16:47:49.4 -16:59:58 15.0       166
Positions are for J2000

Event circumstances last updated at 2024/02/12 04:17:30 UT

Marc W. Buie, Southwest Research Institute

RECON