RECON: TNO occultation with 524613

Event between (524613) 03QW113 and star GA0920:00125372 with event index number of 2540566

Geocentric closest approach at 2028/11/30 01:55:09 UTC

J2000 position of star is 01:26:19.1 +03:52:24
Equinox of date position of star is 01:27:33.1 +03:59:48
Stellar brightness G=14.9, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 26 degrees from the moon. Moon is 96% illuminated.
Apparent brightness V=21.8

[RECON map]
Object is 27.6 AU from the Sun and 26.9 AU from the Earth.
Apparent velocity is 13.9 km/sec on the sky relative to the star, or, 2.6 arcsec/hr.
The 1-sigma error in the time of the event is 255 seconds.
The 1-sigma cross-track error in the shadow position is 1837 km.
The sky-plane scale is 19521.9 km/arcsec.

The object has an absolute magnitude Hv=7.3
Diameter=209.9 km assuming a 5% albedo -- 15.3 sec chord
Diameter=85.7 km assuming a 30% albedo -- 6.2 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 524613, (2028/11/30 01:55UT)
Object            RA         Dec     mag  sep  mel
Fomalhaut      22:59:14.3 -29:28:05  1.2 48.87  74
68Omi Cet      02:20:48.6 -02:50:51  2.0 14.92  24
PPM 144619     01:28:23.5 +03:41:04  6.5  0.37  26
PPM 144620     01:28:32.1 +04:19:16  9.4  0.35  25
PPM 144597     01:27:07.1 +04:03:38 11.2  0.18  26
524613         01:27:49.0 +04:01:23 14.9        25
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 3.5 sigma about the mid-time.
The median site spacing is 20.2 km RECON observability=0.9 and success probability=0.9%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kamloops 01:56:48 -17.6 AT Up 30.8 127.2 Up 01:41:48 - 02:11:48 6402
Kelowna 01:56:50 -18.0 Dark Up 31.8 127.7 Up 01:41:50 - 02:11:50 6340
Peachland 01:56:51 -17.8 AT Up 31.7 127.4 Up 01:41:51 - 02:11:51 6339
Victoria 01:57:11 -15.3 AT Up 30.5 123.2 Up 01:42:11 - 02:12:11 6335
Summerland 01:56:52 -17.8 AT Up 31.9 127.4 Up 01:41:52 - 02:11:52 6329
Penticton 01:56:52 -17.9 AT Up 31.9 127.5 Up 01:41:52 - 02:11:52 6323
Oliver 01:56:53 -17.8 AT Up 32.2 127.3 Up 01:41:53 - 02:11:53 6303
Anarchist Mountain Observatory 01:56:53 -17.9 AT Up 32.4 127.4 Up 01:41:53 - 02:11:53 6290
Okanogan 01:56:58 -17.6 AT Up 32.7 126.9 Up 01:41:58 - 02:11:58 6256
Brewster 01:57:00 -17.5 AT Up 32.7 126.5 Up 01:42:00 - 02:12:00 6243
Manson/Chelan 01:57:03 -17.2 AT Up 32.6 126.1 Up 01:42:03 - 02:12:03 6238
Sleaford 01:55:47 -26.6 Dark Up 36.1 143.1 Up 01:40:47 - 02:10:47 6216
Wenatchee 01:57:06 -17.0 AT Up 32.8 125.7 Up 01:42:06 - 02:12:06 6213
Ellensburg 01:57:09 -16.7 AT Up 33.0 125.3 Up 01:42:09 - 02:12:09 6192
Yakima 01:57:12 -16.6 AT Up 33.2 125.0 Up 01:42:12 - 02:12:12 6167
Toppenish/White Swan 01:57:12 -16.7 AT Up 33.4 125.1 Up 01:42:12 - 02:12:12 6151
The Dalles 01:57:19 -16.0 AT Up 33.4 123.9 Up 01:42:19 - 02:12:19 6117
PNWRO 01:57:08 -17.6 AT Up 34.5 126.4 Up 01:42:08 - 02:12:08 6099
Maupin 01:57:21 -15.9 AT Up 33.7 123.8 Up 01:42:21 - 02:12:21 6089
Sisters 01:57:28 -15.4 AT Up 33.9 122.9 Up 01:42:28 - 02:12:28 6043
Bend 01:57:28 -15.5 AT Up 34.2 123.0 Up 01:42:28 - 02:12:28 6022
Oregon Observatory 01:57:29 -15.4 AT Up 34.2 122.8 Up 01:42:29 - 02:12:29 6014
Chiloquin 01:57:38 -14.7 AT Up 34.7 121.6 Up 01:42:38 - 02:12:38 5935
Klamath Falls 01:57:39 -14.7 AT Up 34.9 121.5 Up 01:42:39 - 02:12:39 5910
Cedarville 01:57:37 -15.7 AT Up 36.3 122.6 Up 01:42:37 - 02:12:37 5830
Fall River/Burney 01:57:44 -14.7 AT Up 35.8 121.2 Up 01:42:44 - 02:12:44 5821
Greenville 01:57:47 -14.8 AT Up 36.6 121.0 Up 01:42:47 - 02:12:47 5749
Gimple 01:57:47 -14.8 AT Up 36.6 121.1 Up 01:42:47 - 02:12:47 5747
Quincy 01:57:48 -14.7 AT Up 36.7 120.9 Up 01:42:48 - 02:12:48 5734
Portola 01:57:47 -15.0 AT Up 37.1 121.3 Up 01:42:47 - 02:12:47 5715
Reno 01:57:46 -15.4 AT Up 37.6 121.7 Up 01:42:46 - 02:12:46 5682
Carson City 01:57:47 -15.3 AT Up 37.8 121.5 Up 01:42:47 - 02:12:47 5656
Gardnerville 01:57:48 -15.3 AT Up 38.0 121.4 Up 01:42:48 - 02:12:48 5637
Yerington 01:57:45 -15.8 AT Up 38.3 122.0 Up 01:42:45 - 02:12:45 5628
Hawthorne 01:57:46 -16.0 AT Up 38.9 122.2 Up 01:42:46 - 02:12:46 5582
Lee Vining 01:57:51 -15.5 AT Up 38.9 121.3 Up 01:42:51 - 02:12:51 5551
Bishop 01:57:50 -15.9 AT Up 39.7 121.6 Up 01:42:50 - 02:12:50 5490
Beatty 01:57:45 -17.1 AT Up 41.1 122.8 Up 01:42:45 - 02:12:45 5417
Dunrhomin 01:56:35 -26.4 Dark Up 45.7 137.7 Up 01:41:35 - 02:11:35 5402
Nikitin 01:56:35 -26.3 Dark Up 45.8 137.6 Up 01:41:35 - 02:11:35 5388
CU-SBO 01:56:36 -26.3 Dark Up 45.8 137.4 Up 01:41:36 - 02:11:36 5385
Wildwood 01:58:07 -14.9 AT Up 41.3 119.1 Up 01:43:07 - 02:13:07 5240
Patrick 01:57:38 -18.9 Dark Up 43.8 124.6 Up 01:42:38 - 02:12:38 5233
Laughlin/Bullhead City 01:57:42 -18.3 Dark Up 43.5 123.7 Up 01:42:42 - 02:12:42 5230
Lake Havasu City 01:57:44 -18.4 Dark Up 44.0 123.4 Up 01:42:44 - 02:12:44 5170
Idyllwild 01:57:59 -16.3 AT Up 42.8 120.5 Up 01:42:59 - 02:12:59 5168
Calipatria 01:57:57 -17.1 AT Up 43.9 121.1 Up 01:42:57 - 02:12:57 5088
George/Scottsdale 01:57:36 -20.1 Dark Up 46.1 125.2 Up 01:42:36 - 02:12:36 5047
Yuma 01:57:54 -17.7 AT Up 44.8 121.6 Up 01:42:54 - 02:12:54 5031

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, (2028/11/30 01:55UT)
Object            RA         Dec     mag  sep  mel
Fomalhaut      22:57:39.6 -29:37:24  1.2 48.87  74
68Omi Cet      02:19:20.8 -02:58:45  2.0 14.92  24
PPM 144619     01:26:53.6 +03:32:06  6.5  0.37  26
PPM 144620     01:27:02.1 +04:10:18  9.4  0.35  25
PPM 144597     01:25:37.2 +03:54:39 11.2  0.18  26
524613         01:26:19.1 +03:52:24 14.9        26
Positions are for J2000

Event circumstances last updated at 2023/10/28 01:04:26 UT

Marc W. Buie, Southwest Research Institute

RECON