RECON: TNO occultation with 524613

Event between (524613) 03QW113 and star GA0940:00134225 with event index number of 2317932

Geocentric closest approach at 2028/09/27 06:42:30 UTC

J2000 position of star is 01:32:26.4 +04:28:47
Equinox of date position of star is 01:33:40.6 +04:36:06
Stellar brightness G=15.4, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 89 degrees from the moon. Moon is 67% illuminated.
Apparent brightness V=21.7

[RECON map]
Object is 27.6 AU from the Sun and 26.7 AU from the Earth.
Apparent velocity is 21.6 km/sec on the sky relative to the star, or, 4.0 arcsec/hr.
The 1-sigma error in the time of the event is 187 seconds.
The 1-sigma cross-track error in the shadow position is 2073 km.
The sky-plane scale is 19363.7 km/arcsec.

The object has an absolute magnitude Hv=7.3
Diameter=209.9 km assuming a 5% albedo -- 9.8 sec chord
Diameter=85.7 km assuming a 30% albedo -- 4.0 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 524613, (2028/09/27 06:47UT)
Object            RA         Dec     mag  sep  mel
Fomalhaut      22:59:13.8 -29:28:08  1.2 50.37  44
68Omi Cet      02:20:48.0 -02:50:53  2.0 13.89  97
PPM 144619     01:28:22.9 +03:41:01  6.5  1.67  87
PPM 144635     01:29:09.6 +05:30:00  7.1  1.47  88
PPM 144717     01:34:01.1 +04:23:47  9.4  0.23  88
524613         01:33:55.9 +04:37:36 15.4        89
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 4.8 sigma about the mid-time.
The median site spacing is 20.0 km RECON observability=1.0 and success probability=18.7%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kamloops 06:42:40 -39.0 Dark Up 34.8 134.2 Up 06:27:40 - 06:57:40 1702
Victoria 06:42:55 -40.2 Dark Up 34.8 129.9 Up 06:27:55 - 06:57:55 1681
Peachland 06:42:42 -40.0 Dark Up 35.7 134.4 Up 06:27:42 - 06:57:42 1641
Kelowna 06:42:41 -40.0 Dark Up 35.7 134.8 Up 06:27:41 - 06:57:41 1638
Summerland 06:42:43 -40.2 Dark Up 35.8 134.4 Up 06:27:43 - 06:57:43 1631
Penticton 06:42:43 -40.3 Dark Up 35.9 134.5 Up 06:27:43 - 06:57:43 1624
Oliver 06:42:44 -40.6 Dark Up 36.2 134.3 Up 06:27:44 - 06:57:44 1607
Anarchist Mountain Observatory 06:42:44 -40.8 Dark Up 36.4 134.4 Up 06:27:44 - 06:57:44 1593
Okanogan 06:42:47 -41.3 Dark Up 36.7 133.9 Up 06:27:47 - 06:57:47 1566
Brewster 06:42:48 -41.5 Dark Up 36.8 133.5 Up 06:27:48 - 06:57:48 1558
Manson/Chelan 06:42:50 -41.6 Dark Up 36.8 133.0 Up 06:27:50 - 06:57:50 1558
Wenatchee 06:42:52 -42.0 Dark Up 37.0 132.6 Up 06:27:52 - 06:57:52 1538
Ellensburg 06:42:54 -42.4 Dark Up 37.2 132.1 Up 06:27:54 - 06:57:54 1522
Yakima 06:42:55 -42.7 Dark Up 37.5 131.9 Up 06:27:55 - 06:57:55 1501
Toppenish/White Swan 06:42:56 -43.0 Dark Up 37.7 131.9 Up 06:27:56 - 06:57:56 1484
The Dalles 06:43:00 -43.5 Dark Up 37.8 130.6 Up 06:28:00 - 06:58:00 1465
Maupin 06:43:02 -43.9 Dark Up 38.2 130.5 Up 06:28:02 - 06:58:02 1439
PNWRO 06:42:53 -43.7 Dark Up 38.7 133.3 Up 06:27:53 - 06:57:53 1420
Sisters 06:43:06 -44.5 Dark Up 38.5 129.5 Up 06:28:06 - 06:58:06 1405
Bend 06:43:06 -44.8 Dark Up 38.8 129.6 Up 06:28:06 - 06:58:06 1384
Oregon Observatory 06:43:07 -44.9 Dark Up 38.8 129.4 Up 06:28:07 - 06:58:07 1378
Sleaford 06:42:00 -39.7 Dark Down 39.0 151.3 Up 06:27:00 - 06:57:00 1371
Chiloquin 06:43:13 -46.0 Dark Up 39.4 128.1 Up 06:28:13 - 06:58:13 1314
Klamath Falls 06:43:14 -46.3 Dark Up 39.7 128.0 Up 06:28:14 - 06:58:14 1291
Fall River/Burney 06:43:17 -47.5 Dark Up 40.6 127.6 Up 06:28:17 - 06:58:17 1207
Cedarville 06:43:12 -47.5 Dark Up 41.0 129.2 Up 06:28:12 - 06:58:12 1198
Greenville 06:43:19 -48.4 Dark Up 41.4 127.5 Up 06:28:19 - 06:58:19 1137
Gimple 06:43:19 -48.5 Dark Up 41.5 127.5 Up 06:28:19 - 06:58:19 1134
Quincy 06:43:20 -48.6 Dark Up 41.6 127.3 Up 06:28:20 - 06:58:20 1124
Portola 06:43:19 -48.9 Dark Up 41.9 127.7 Up 06:28:19 - 06:58:19 1101
Reno 06:43:18 -49.4 Dark Up 42.5 128.2 Up 06:28:18 - 06:58:18 1062
Carson City 06:43:19 -49.7 Dark Up 42.7 128.0 Up 06:28:19 - 06:58:19 1038
Gardnerville 06:43:20 -49.9 Dark Up 42.9 127.9 Up 06:28:20 - 06:58:20 1021
Yerington 06:43:18 -50.1 Dark Up 43.2 128.5 Up 06:28:18 - 06:58:18 1004
Hawthorne 06:43:18 -50.7 Dark Up 43.8 128.8 Up 06:28:18 - 06:58:18 956
Lee Vining 06:43:22 -51.0 Dark Up 43.9 127.8 Up 06:28:22 - 06:58:22 935
Bishop 06:43:22 -51.8 Dark Up 44.7 128.2 Up 06:28:22 - 06:58:22 870
Beatty 06:43:18 -52.8 Dark Up 46.0 129.6 Up 06:28:18 - 06:58:18 781
Wildwood 06:43:33 -54.7 Dark Up 46.6 125.3 Up 06:28:33 - 06:58:33 647
Dunrhomin 06:42:32 -51.6 Dark Up 49.5 146.5 Up 06:27:32 - 06:57:32 608
Nikitin 06:42:32 -51.7 Dark Up 49.7 146.4 Up 06:27:32 - 06:57:32 595
CU-SBO 06:42:32 -51.8 Dark Up 49.7 146.2 Up 06:27:32 - 06:57:32 594
Laughlin/Bullhead City 06:43:17 -55.0 Dark Up 48.5 130.7 Up 06:28:17 - 06:58:17 580
Patrick 06:43:14 -55.0 Dark Up 48.8 131.7 Up 06:28:14 - 06:58:14 573
Idyllwild 06:43:28 -55.7 Dark Up 48.0 127.0 Up 06:28:28 - 06:58:28 554
Lake Havasu City 06:43:18 -55.7 Dark Up 49.1 130.4 Up 06:28:18 - 06:58:18 522
Calipatria 06:43:26 -56.7 Dark Up 49.2 127.8 Up 06:28:26 - 06:58:26 464
Yuma 06:43:25 -57.3 Dark Up 50.0 128.4 Up 06:28:25 - 06:58:25 399
George/Scottsdale 06:43:13 -57.1 Dark Up 51.1 132.7 Up 06:28:13 - 06:58:13 373

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 524613, (2028/09/27 06:47UT)
Object            RA         Dec     mag  sep  mel
Fomalhaut      22:57:39.6 -29:37:24  1.2 50.37  44
68Omi Cet      02:19:20.8 -02:58:45  2.0 13.89  97
PPM 144619     01:26:53.6 +03:32:06  6.5  1.67  87
PPM 144635     01:27:39.8 +05:21:06  7.1  1.47  88
PPM 144717     01:32:31.6 +04:14:58  9.4  0.23  88
524613         01:32:26.4 +04:28:47 15.4        88
Positions are for J2000

Event circumstances last updated at 2023/10/28 00:57:35 UT

Marc W. Buie, Southwest Research Institute

RECON