RECON: TNO occultation with 578992

Event between (578992) 14JL80 and star GA0700:14112628 with event index number of 2555897

Geocentric closest approach at 2028/05/28 10:02:02 UTC

J2000 position of star is 17:39:25.4 -18:49:20
Equinox of date position of star is 17:40:51.8 -18:50:02
Stellar brightness G=16.9, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 145 degrees from the moon. Moon is 19% illuminated.
Apparent brightness V=22.0

[RECON map]
Object is 28.6 AU from the Sun and 27.7 AU from the Earth.
Apparent velocity is 21.6 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 107 seconds.
The 1-sigma cross-track error in the shadow position is 1070 km.
The sky-plane scale is 20077.3 km/arcsec.

The object has an absolute magnitude Hv=7.4
Diameter=199.5 km assuming a 5% albedo -- 9.3 sec chord
Diameter=81.5 km assuming a 30% albedo -- 3.8 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 

Star training set for 578992, (2028/05/28 09:59UT)
Object            RA         Dec     mag  sep  mel
Antares        16:31:09.2 -26:29:33  0.9 17.83 130
35Eta Oph      17:12:00.6 -15:45:29  2.6  7.59 138
58 Oph         17:45:08.1 -21:41:39  4.9  3.01 147
PPM 233364     17:39:49.7 -19:59:20  8.5  1.19 145
PPM 233405     17:41:10.4 -18:49:25  9.7  0.02 145
578992         17:41:05.6 -18:50:09 16.9       146
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 19.7 km RECON observability=0.8 and success probability=0.1%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kamloops 10:01:38 -12.8 AT Down 19.8 191.7 Really Low 09:52:15 - 10:11:01 2693
Sleaford 10:00:56 -6.6 NT Down 15.6 205.4 Really Low 09:51:33 - 10:10:19 2688
Kelowna 10:01:34 -13.3 AT Down 20.4 192.7 Low 09:52:11 - 10:10:57 2660
Peachland 10:01:35 -13.5 AT Down 20.6 192.4 Low 09:52:12 - 10:10:58 2656
Summerland 10:01:35 -13.6 AT Down 20.7 192.5 Low 09:52:12 - 10:10:58 2650
Penticton 10:01:34 -13.6 AT Down 20.8 192.6 Low 09:52:11 - 10:10:57 2647
Oliver 10:01:34 -13.9 AT Down 21.1 192.6 Low 09:52:11 - 10:10:57 2632
Anarchist Mountain Observatory 10:01:33 -14.0 AT Down 21.2 192.8 Low 09:52:10 - 10:10:56 2626
Victoria 10:01:46 -15.7 AT Down 22.2 188.8 Low 09:52:23 - 10:11:09 2608
Okanogan 10:01:34 -14.6 AT Down 21.9 192.7 Low 09:52:11 - 10:10:57 2598
Brewster 10:01:34 -14.9 AT Down 22.2 192.5 Low 09:52:11 - 10:10:57 2587
Manson/Chelan 10:01:35 -15.2 AT Down 22.5 192.1 Low 09:52:12 - 10:10:58 2578
Wenatchee 10:01:35 -15.7 AT Down 22.9 192.0 Low 09:52:12 - 10:10:58 2557
Ellensburg 10:01:36 -16.1 AT Down 23.4 191.8 Low 09:52:13 - 10:10:59 2539
Yakima 10:01:35 -16.5 AT Down 23.8 191.8 Low 09:52:12 - 10:10:58 2521
Toppenish/White Swan 10:01:35 -16.6 AT Down 24.0 192.0 Low 09:52:12 - 10:10:58 2510
PNWRO 10:01:29 -16.4 AT Down 24.1 193.6 Low 09:52:06 - 10:10:52 2491
The Dalles 10:01:37 -17.5 AT Down 24.8 191.3 Low 09:52:14 - 10:11:00 2475
Maupin 10:01:36 -17.9 AT Down 25.2 191.4 Low 09:52:13 - 10:10:59 2455
Sisters 10:01:37 -18.8 Dark Down 26.2 191.0 Low 09:52:14 - 10:11:00 2412
Bend 10:01:36 -18.9 Dark Down 26.4 191.3 Low 09:52:13 - 10:10:59 2400
Oregon Observatory 10:01:37 -19.1 Dark Down 26.5 191.2 Low 09:52:14 - 10:11:00 2392
Chiloquin 10:01:37 -20.4 Dark Down 27.9 190.9 Low 09:52:14 - 10:11:00 2324
Klamath Falls 10:01:36 -20.7 Dark Down 28.2 191.0 Low 09:52:13 - 10:10:59 2306
Cedarville 10:01:30 -20.7 Dark Down 28.7 192.8 Low 09:52:07 - 10:10:53 2266
Fall River/Burney 10:01:34 -21.6 Dark Down 29.3 191.5 Low 09:52:11 - 10:10:57 2241
Greenville 10:01:32 -22.2 Dark Down 30.1 192.1 Up 09:52:09 - 10:10:55 2189
Gimple 10:01:32 -22.2 Dark Down 30.1 192.2 Up 09:52:09 - 10:10:55 2189
Quincy 10:01:32 -22.4 Dark Down 30.3 192.1 Up 09:52:09 - 10:10:55 2178
Portola 10:01:30 -22.3 Dark Down 30.4 192.7 Up 09:52:07 - 10:10:53 2170
Reno 10:01:27 -22.3 Dark Down 30.5 193.4 Up 09:52:04 - 10:10:50 2154
Carson City 10:01:27 -22.6 Dark Down 30.9 193.5 Up 09:52:04 - 10:10:50 2133
Yerington 10:01:24 -22.5 Dark Down 31.0 194.2 Up 09:52:01 - 10:10:47 2120
Gardnerville 10:01:26 -22.8 Dark Down 31.1 193.5 Up 09:52:03 - 10:10:49 2118
Dunrhomin 10:00:34 -15.0 AT Down 25.9 208.1 Low 09:51:11 - 10:09:57 2117
Nikitin 10:00:34 -15.1 AT Down 26.1 208.1 Low 09:51:11 - 10:09:57 2107
CU-SBO 10:00:34 -15.2 AT Down 26.2 208.1 Low 09:51:11 - 10:09:57 2104
Hawthorne 10:01:22 -22.7 Dark Down 31.3 194.8 Up 09:51:59 - 10:10:45 2091
Lee Vining 10:01:23 -23.4 Dark Down 31.9 194.4 Up 09:52:00 - 10:10:46 2059
Bishop 10:01:20 -23.5 Dark Down 32.4 195.2 Up 09:51:57 - 10:10:43 2020
Beatty 10:01:13 -23.2 Dark Down 32.5 197.1 Up 09:51:50 - 10:10:36 1986
Patrick 10:01:00 -23.1 Dark Down 33.1 200.4 Up 09:51:37 - 10:10:23 1879
Laughlin/Bullhead City 10:01:03 -23.6 Dark Down 33.6 199.7 Up 09:51:40 - 10:10:26 1866
Lake Havasu City 10:01:01 -24.0 Dark Down 34.1 200.2 Up 09:51:38 - 10:10:24 1821
Wildwood 10:01:18 -26.4 Dark Down 35.6 195.6 Up 09:51:55 - 10:10:41 1810
Idyllwild 10:01:10 -25.8 Dark Down 35.5 197.7 Up 09:51:47 - 10:10:33 1781
George/Scottsdale 10:00:50 -23.4 Dark Down 34.1 203.0 Up 09:51:27 - 10:10:13 1756
Calipatria 10:01:05 -25.7 Dark Down 35.8 199.2 Up 09:51:42 - 10:10:28 1734
Yuma 10:01:00 -25.6 Dark Down 35.9 200.3 Up 09:51:37 - 10:10:23 1700

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 578992, (2028/05/28 09:59UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 17.83 130
35Eta Oph      17:10:22.7 -15:43:29  2.6  7.59 138
58 Oph         17:43:25.7 -21:41:00  4.9  3.01 147
PPM 233364     17:38:08.6 -19:58:28  8.5  1.19 145
PPM 233405     17:39:30.1 -18:48:36  9.7  0.02 145
578992         17:39:25.4 -18:49:20 16.9       145
Positions are for J2000

Event circumstances last updated at 2024/06/24 21:29:25 UT

Marc W. Buie, Southwest Research Institute

RECON