RECON: TNO occultation with 578835

Event between (578835) 14GL54 and star GA0800:05874610 with event index number of 2553327

Geocentric closest approach at 2028/09/20 03:26:51 UTC

J2000 position of star is 17:13:09.7 -09:06:35
Equinox of date position of star is 17:14:30.1 -09:08:13
Stellar brightness G=15.3, 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 3% illuminated.
Apparent brightness V=22.1

[RECON map]
Object is 37.4 AU from the Sun and 37.6 AU from the Earth.
Apparent velocity is 14.0 km/sec on the sky relative to the star, or, 1.8 arcsec/hr.
The 1-sigma error in the time of the event is 127 seconds.
The 1-sigma cross-track error in the shadow position is 2008 km.
The sky-plane scale is 27260.1 km/arcsec.

The object has an absolute magnitude Hv=6.2
Diameter=338.9 km assuming a 5% albedo -- 24.5 sec chord
Diameter=138.3 km assuming a 30% albedo -- 10.0 sec chord
Dynamical classification is SCATNEAR
 
 
 
 
 
 

Star training set for 578835, (2028/09/20 03:31UT)
Object            RA         Dec     mag  sep  mel
Antares        16:31:10.4 -26:29:35  0.9 20.19  52
35Eta Oph      17:12:01.6 -15:45:30  2.6  6.65  62
PPM 232685     17:11:23.3 -10:33:29  5.6  1.64  62
PPM 200456     17:15:11.8 -09:18:56  7.8  0.21  63
PPM 200441     17:14:15.1 -09:10:33  9.5  0.12  63
578835         17:14:44.0 -09:08:30 15.3        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 7.6 km RECON observability=0.5 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)
Dunrhomin 03:25:36 -27.3 Dark Down 24.0 232.8 Low 03:14:30 - 03:36:42 11864
Sleaford 03:24:15 -20.8 Dark Down 17.1 228.4 Really Low 03:13:09 - 03:35:21 11861
Nikitin 03:25:34 -27.3 Dark Down 24.1 232.9 Low 03:14:28 - 03:36:40 11861
CU-SBO 03:25:36 -27.3 Dark Down 24.2 232.8 Low 03:14:30 - 03:36:42 11857
George/Scottsdale 03:25:49 -25.0 Dark Down 32.2 229.8 Up 03:14:43 - 03:36:55 11462
Patrick 03:25:32 -22.8 Dark Down 32.4 227.1 Up 03:14:26 - 03:36:38 11412
Kelowna 03:23:47 -14.0 AT Down 24.5 215.9 Low 03:12:41 - 03:34:53 11381
Anarchist Mountain Observatory 03:23:52 -14.3 AT Down 25.1 216.3 Low 03:12:46 - 03:34:58 11380
Penticton 03:23:51 -14.0 AT Down 24.8 215.9 Low 03:12:45 - 03:34:57 11375
Oliver 03:23:47 -14.1 AT Down 25.1 216.0 Low 03:12:41 - 03:34:53 11373
PNWRO 03:24:07 -15.6 AT Down 27.3 217.7 Low 03:13:01 - 03:35:13 11372
Laughlin/Bullhead City 03:25:30 -22.4 Dark Down 33.0 226.5 Up 03:14:24 - 03:36:36 11372
Summerland 03:23:45 -13.9 AT Down 24.8 215.8 Low 03:12:39 - 03:34:51 11371
Peachland 03:23:51 -13.8 AT Down 24.7 215.7 Low 03:12:45 - 03:34:57 11368
Lake Havasu City 03:25:35 -22.8 Dark Down 33.3 227.1 Up 03:14:29 - 03:36:41 11366
Okanogan 03:23:52 -14.4 AT Down 25.7 216.2 Low 03:12:46 - 03:34:58 11365
Brewster 03:23:54 -14.3 AT Down 26.0 216.1 Low 03:12:48 - 03:35:00 11354
Kamloops 03:23:40 -13.1 AT Down 24.2 214.8 Low 03:12:34 - 03:34:46 11349
Manson/Chelan 03:23:58 -14.2 AT Down 26.3 215.8 Low 03:12:52 - 03:35:04 11337
Wenatchee 03:23:58 -14.2 AT Down 26.8 215.8 Low 03:12:52 - 03:35:04 11324
Ellensburg 03:23:58 -14.2 AT Down 27.2 215.7 Low 03:12:52 - 03:35:04 11310
Beatty 03:25:10 -20.1 Dark Down 33.1 223.5 Up 03:14:04 - 03:36:16 11310
Toppenish/White Swan 03:24:01 -14.5 AT Down 27.6 216.0 Low 03:12:55 - 03:35:07 11309
Yakima 03:23:59 -14.3 AT Down 27.5 215.8 Low 03:12:53 - 03:35:05 11305
Yuma 03:25:45 -23.1 Dark Down 34.7 227.7 Up 03:14:39 - 03:36:51 11301
Calipatria 03:25:39 -22.2 Dark Down 34.9 226.7 Up 03:14:33 - 03:36:45 11269
The Dalles 03:24:02 -14.2 AT Down 28.6 215.5 Low 03:12:56 - 03:35:08 11263
Maupin 03:24:05 -14.4 AT Down 28.9 215.7 Low 03:12:59 - 03:35:11 11263
Hawthorne 03:24:53 -18.1 Dark Down 32.9 220.9 Up 03:13:47 - 03:35:59 11256
Cedarville 03:24:29 -16.1 AT Down 31.4 218.0 Up 03:13:23 - 03:35:35 11245
Yerington 03:24:48 -17.6 AT Down 32.8 220.2 Up 03:13:42 - 03:35:54 11241
Bishop 03:24:59 -18.7 Dark Down 33.6 221.7 Up 03:13:53 - 03:36:05 11241
Bend 03:24:14 -14.5 AT Down 29.9 215.9 Low 03:13:08 - 03:35:20 11235
Idyllwild 03:25:31 -21.1 Dark Down 35.2 225.2 Up 03:14:25 - 03:36:37 11229
Sisters 03:24:08 -14.3 AT Down 29.8 215.5 Low 03:13:02 - 03:35:14 11227
Oregon Observatory 03:24:12 -14.5 AT Down 30.1 215.8 Up 03:13:06 - 03:35:18 11226
Reno 03:24:42 -16.9 AT Down 32.7 219.2 Up 03:13:36 - 03:35:48 11221
Lee Vining 03:24:54 -17.9 AT Down 33.6 220.7 Up 03:13:48 - 03:36:00 11220
Carson City 03:24:44 -17.1 AT Down 33.0 219.4 Up 03:13:38 - 03:35:50 11214
Gardnerville 03:24:46 -17.2 AT Down 33.1 219.6 Up 03:13:40 - 03:35:52 11211
Victoria 03:23:44 -11.9 NT Down 27.0 212.2 Low 03:12:38 - 03:34:50 11200
Portola 03:24:37 -16.4 AT Down 32.8 218.4 Up 03:13:31 - 03:35:43 11195
Chiloquin 03:24:17 -14.6 AT Down 31.3 215.9 Up 03:13:11 - 03:35:23 11183
Gimple 03:24:36 -16.0 AT Down 32.8 217.9 Up 03:13:30 - 03:35:42 11182
Klamath Falls 03:24:19 -14.7 AT Down 31.5 216.1 Up 03:13:13 - 03:35:25 11180
Greenville 03:24:34 -15.9 AT Down 32.8 217.8 Up 03:13:28 - 03:35:40 11178
Fall River/Burney 03:24:27 -15.3 AT Down 32.3 217.0 Up 03:13:21 - 03:35:33 11175
Quincy 03:24:36 -16.0 AT Down 33.0 217.9 Up 03:13:30 - 03:35:42 11173
Wildwood 03:25:20 -19.5 Dark Down 36.1 223.1 Up 03:14:14 - 03:36:26 11142

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 578835, (2028/09/20 03:31UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 20.19  52
35Eta Oph      17:10:22.7 -15:43:29  2.6  6.65  62
PPM 232685     17:09:48.0 -10:31:26  5.6  1.64  62
PPM 200456     17:13:37.4 -09:17:02  7.8  0.21  63
PPM 200441     17:12:40.8 -09:08:37  9.5  0.12  63
578835         17:13:09.7 -09:06:35 15.3        63
Positions are for J2000

Event circumstances last updated at 2024/06/24 21:34:06 UT

Marc W. Buie, Southwest Research Institute

RECON