RECON: TNO occultation with 578992

Event between (578992) 14JL80 and star GA0700:14617443 with event index number of 2555866

Geocentric closest approach at 2028/05/12 10:06:21 UTC

J2000 position of star is 17:41:02.1 -18:50:45
Equinox of date position of star is 17:42:25.1 -18:51:22
Stellar brightness G=15.7, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 13 degrees from the moon. Moon is 86% illuminated.
Apparent brightness V=22.0

[RECON map]
Object is 28.6 AU from the Sun and 27.8 AU from the Earth.
Apparent velocity is 18.1 km/sec on the sky relative to the star, or, 3.2 arcsec/hr.
The 1-sigma error in the time of the event is 157 seconds.
The 1-sigma cross-track error in the shadow position is 1267 km.
The sky-plane scale is 20161.4 km/arcsec.

The object has an absolute magnitude Hv=7.4
Diameter=199.5 km assuming a 5% albedo -- 11.1 sec chord
Diameter=81.5 km assuming a 30% albedo -- 4.5 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 

Star training set for 578992, (2028/05/12 10:04UT)
Object            RA         Dec     mag  sep  mel
Antares        16:31:09.1 -26:29:32  0.9 18.16  27
35Eta Oph      17:12:00.4 -15:45:29  2.6  7.95  21
58 Oph         17:45:07.9 -21:41:39  4.9  2.89  11
PPM 267170     17:44:13.4 -20:06:57  8.5  1.31  12
PPM 233425     17:42:06.8 -18:50:10  9.8  0.14  13
578992         17:42:42.2 -18:51:29 15.7        13
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 16.3 km RECON observability=1.0 and success probability=30.8%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Sleaford 10:06:06 -8.8 NT Up 18.4 191.0 Really Low 09:52:30 - 10:19:42 114
Kamloops 10:07:00 -15.4 AT Up 20.4 176.8 Low 09:53:24 - 10:20:36 6
Kelowna 10:06:57 -15.8 AT Up 21.3 177.7 Low 09:53:21 - 10:20:33 -21
Peachland 10:06:58 -16.0 AT Up 21.4 177.4 Low 09:53:22 - 10:20:34 -27
Summerland 10:06:58 -16.1 AT Up 21.5 177.5 Low 09:53:22 - 10:20:34 -32
Penticton 10:06:57 -16.1 AT Up 21.6 177.6 Low 09:53:21 - 10:20:33 -35
Oliver 10:06:57 -16.4 AT Up 21.9 177.6 Low 09:53:21 - 10:20:33 -49
Anarchist Mountain Observatory 10:06:56 -16.5 AT Up 22.1 177.8 Low 09:53:20 - 10:20:32 -55
Okanogan 10:06:57 -17.1 AT Up 22.8 177.5 Low 09:53:21 - 10:20:33 -84
Brewster 10:06:58 -17.4 AT Up 23.0 177.3 Low 09:53:22 - 10:20:34 -97
Victoria 10:07:12 -18.2 Dark Up 22.4 173.7 Low 09:53:36 - 10:20:48 -106
Manson/Chelan 10:07:00 -17.7 AT Up 23.2 176.9 Low 09:53:24 - 10:20:36 -109
Wenatchee 10:07:00 -18.1 Dark Up 23.7 176.8 Low 09:53:24 - 10:20:36 -131
Ellensburg 10:07:01 -18.6 Dark Up 24.1 176.5 Low 09:53:25 - 10:20:37 -152
Yakima 10:07:01 -18.9 Dark Up 24.5 176.5 Low 09:53:25 - 10:20:37 -171
Toppenish/White Swan 10:07:01 -19.0 Dark Up 24.7 176.7 Low 09:53:25 - 10:20:37 -180
PNWRO 10:06:54 -18.8 Dark Up 25.1 178.2 Low 09:53:18 - 10:20:30 -186
The Dalles 10:07:04 -20.0 Dark Up 25.5 175.8 Low 09:53:28 - 10:20:40 -223
Maupin 10:07:04 -20.3 Dark Up 25.9 175.9 Low 09:53:28 - 10:20:40 -242
Sisters 10:07:06 -21.2 Dark Up 26.7 175.4 Low 09:53:30 - 10:20:42 -289
Bend 10:07:05 -21.3 Dark Up 27.0 175.6 Low 09:53:29 - 10:20:41 -299
Oregon Observatory 10:07:05 -21.5 Dark Up 27.2 175.5 Low 09:53:29 - 10:20:41 -309
Chiloquin 10:07:07 -22.8 Dark Up 28.4 175.0 Low 09:53:31 - 10:20:43 -381
Klamath Falls 10:07:07 -23.1 Dark Up 28.8 175.1 Low 09:53:31 - 10:20:43 -399
Cedarville 10:07:00 -23.0 Dark Up 29.6 176.8 Low 09:53:24 - 10:20:36 -424
Dunrhomin 10:05:51 -16.8 AT Up 29.9 192.8 Low 09:52:15 - 10:19:27 -429
Nikitin 10:05:51 -16.9 AT Up 30.1 192.8 Up 09:52:15 - 10:19:27 -440
CU-SBO 10:05:51 -17.0 AT Up 30.2 192.8 Up 09:52:15 - 10:19:27 -443
Fall River/Burney 10:07:05 -23.9 Dark Up 30.0 175.4 Low 09:53:29 - 10:20:41 -461
Gimple 10:07:03 -24.5 Dark Up 30.9 176.0 Up 09:53:27 - 10:20:39 -508
Greenville 10:07:04 -24.5 Dark Up 30.9 175.9 Up 09:53:28 - 10:20:40 -509
Quincy 10:07:04 -24.7 Dark Up 31.1 175.9 Up 09:53:28 - 10:20:40 -520
Portola 10:07:01 -24.6 Dark Up 31.3 176.4 Up 09:53:25 - 10:20:37 -523
Reno 10:06:58 -24.5 Dark Up 31.6 177.1 Up 09:53:22 - 10:20:34 -534
Carson City 10:06:58 -24.8 Dark Up 31.9 177.1 Up 09:53:22 - 10:20:34 -555
Yerington 10:06:55 -24.7 Dark Up 32.1 177.8 Up 09:53:19 - 10:20:31 -561
Gardnerville 10:06:58 -25.0 Dark Up 32.2 177.1 Up 09:53:22 - 10:20:34 -569
Hawthorne 10:06:53 -24.8 Dark Up 32.6 178.4 Up 09:53:17 - 10:20:29 -585
Lee Vining 10:06:55 -25.5 Dark Up 33.2 177.8 Up 09:53:19 - 10:20:31 -622
Bishop 10:06:51 -25.7 Dark Up 33.8 178.6 Up 09:53:15 - 10:20:27 -654
Beatty 10:06:43 -25.3 Dark Up 34.3 180.4 Up 09:53:07 - 10:20:19 -672
Patrick 10:06:29 -25.0 Dark Up 35.7 183.7 Up 09:52:53 - 10:20:05 -749
Laughlin/Bullhead City 10:06:32 -25.5 Dark Up 35.9 182.9 Up 09:52:56 - 10:20:08 -769
Lake Havasu City 10:06:31 -25.9 Dark Up 36.6 183.2 Up 09:52:55 - 10:20:07 -811
George/Scottsdale 10:06:18 -25.1 Dark Up 37.2 186.1 Up 09:52:42 - 10:19:54 -850
Wildwood 10:06:52 -28.4 Dark Up 37.0 178.3 Up 09:53:16 - 10:20:28 -866
Idyllwild 10:06:42 -27.7 Dark Up 37.4 180.5 Up 09:53:06 - 10:20:18 -876
Calipatria 10:06:37 -27.6 Dark Up 38.0 181.9 Up 09:53:01 - 10:20:13 -911
Yuma 10:06:31 -27.4 Dark Up 38.4 183.0 Up 09:52:55 - 10:20:07 -934

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, (2028/05/12 10:04UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 18.16  27
35Eta Oph      17:10:22.7 -15:43:29  2.6  7.95  21
58 Oph         17:43:25.7 -21:41:00  4.9  2.89  11
PPM 267170     17:42:32.3 -20:06:15  8.5  1.31  12
PPM 233425     17:40:26.7 -18:49:24  9.8  0.14  13
578992         17:41:02.1 -18:50:45 15.7        13
Positions are for J2000

Event circumstances last updated at 2023/07/07 03:09:54 UT

Marc W. Buie, Southwest Research Institute

RECON