RECON: TNO occultation with 444030

Event between (444030) 04NT33 and star GA1140:15954620 with event index number of 2378426

Geocentric closest approach at 2028/06/01 09:28:10 UTC

J2000 position of star is 22:48:05.8 +24:20:11
Equinox of date position of star is 22:49:15.6 +24:27:52
Stellar brightness G=16.5, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 155 degrees from the moon. Moon is 62% illuminated.
Apparent brightness V=20.6

[RECON map]
Object is 40.4 AU from the Sun and 40.6 AU from the Earth.
Apparent velocity is 17.3 km/sec on the sky relative to the star, or, 2.1 arcsec/hr.
The 1-sigma error in the time of the event is 115 seconds.
The 1-sigma cross-track error in the shadow position is 2766 km.
The sky-plane scale is 29442.1 km/arcsec.

The object has an absolute magnitude Hv=4.4
Diameter=698.3 km assuming a 5% albedo -- 45.4 sec chord
Diameter=285.1 km assuming a 30% albedo -- 18.5 sec chord
Dynamical classification is SCATEXTD
 
 
 
 
 
 

Star training set for 444030, (2028/06/01 09:28UT)
Object            RA         Dec     mag  sep  mel
Deneb          20:42:24.1 +45:22:59  1.3 33.02 122
Scheat         23:05:09.3 +28:14:14  2.4  5.14 153
48Mu Peg       22:51:22.6 +24:45:08  3.5  0.51 155
PPM 114817     22:48:35.1 +24:08:08  8.2  0.40 155
PPM 114826     22:49:27.7 +24:08:56  9.8  0.34 155
444030         22:49:27.9 +24:29:13 16.5       155
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 7.1 km RECON observability=0.9 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)
Wildwood 09:29:17 -29.2 Dark Down 31.0 80.0 Up 09:19:14 - 09:39:21 11865
Idyllwild 09:29:12 -28.8 Dark Down 32.4 80.6 Up 09:19:09 - 09:39:16 11794
Calipatria 09:29:09 -28.9 Dark Down 33.3 80.8 Up 09:19:05 - 09:39:12 11757
Lee Vining 09:29:40 -25.9 Dark Down 31.2 82.1 Up 09:19:36 - 09:39:43 11751
Bishop 09:29:34 -26.2 Dark Down 31.7 82.1 Up 09:19:31 - 09:39:38 11744
Quincy 09:29:51 -24.6 Dark Down 30.1 82.2 Up 09:19:47 - 09:39:54 11740
Gardnerville 09:29:51 -25.2 Dark Down 30.9 82.3 Up 09:19:47 - 09:39:54 11737
Greenville 09:29:58 -24.4 Dark Down 30.2 82.4 Up 09:19:54 - 09:40:01 11731
Carson City 09:29:48 -24.9 Dark Down 30.9 82.4 Up 09:19:45 - 09:39:52 11728
Gimple 09:29:58 -24.4 Dark Down 30.3 82.4 Up 09:19:54 - 09:40:01 11728
Portola 09:29:51 -24.6 Dark Down 30.5 82.4 Up 09:19:47 - 09:39:54 11728
Yuma 09:29:09 -28.9 Dark Down 34.0 80.9 Up 09:19:05 - 09:39:12 11727
Reno 09:29:53 -24.6 Dark Down 31.0 82.7 Up 09:19:49 - 09:39:56 11715
Yerington 09:29:50 -24.9 Dark Down 31.4 82.7 Up 09:19:47 - 09:39:54 11712
Hawthorne 09:29:47 -25.2 Dark Down 31.7 82.7 Up 09:19:44 - 09:39:51 11709
Fall River/Burney 09:30:00 -23.7 Dark Down 30.0 82.6 Low 09:19:56 - 09:40:03 11708
Beatty 09:29:31 -26.0 Dark Down 32.9 82.7 Up 09:19:28 - 09:39:35 11691
Klamath Falls 09:30:09 -22.7 Dark Down 29.9 83.1 Low 09:20:05 - 09:40:12 11668
Lake Havasu City 09:29:15 -27.2 Dark Down 34.5 82.3 Up 09:19:12 - 09:39:19 11659
Chiloquin 09:30:09 -22.4 Dark Down 29.8 83.2 Low 09:20:05 - 09:40:12 11655
Laughlin/Bullhead City 09:29:21 -26.7 Dark Down 34.4 82.6 Up 09:19:18 - 09:39:25 11650
Cedarville 09:30:01 -22.9 Dark Down 31.0 83.6 Up 09:19:58 - 09:40:05 11643
Patrick 09:29:19 -26.2 Dark Down 35.0 83.2 Up 09:19:16 - 09:39:23 11610
Oregon Observatory 09:30:16 -21.1 Dark Down 30.3 84.3 Up 09:20:12 - 09:40:19 11578
Bend 09:30:17 -20.9 Dark Down 30.4 84.5 Up 09:20:14 - 09:40:21 11565
Sisters 09:30:22 -20.7 Dark Down 30.3 84.4 Up 09:20:19 - 09:40:26 11561
George/Scottsdale 09:29:09 -26.8 Dark Down 36.4 82.9 Up 09:19:06 - 09:39:13 11560
Maupin 09:30:23 -19.7 Dark Down 30.7 85.3 Up 09:20:19 - 09:40:26 11500
The Dalles 09:30:26 -19.4 Dark Down 30.7 85.5 Up 09:20:23 - 09:40:30 11482
Toppenish/White Swan 09:30:28 -18.5 Dark Down 31.3 86.5 Up 09:20:24 - 09:40:31 11416
Yakima 09:30:30 -18.3 Dark Down 31.2 86.5 Up 09:20:26 - 09:40:33 11411
Victoria 09:30:44 -17.1 AT Down 29.4 85.6 Low 09:20:40 - 09:40:47 11394
Ellensburg 09:30:37 -17.9 AT Down 31.2 86.8 Up 09:20:33 - 09:40:40 11389
PNWRO 09:30:26 -18.4 Dark Down 32.3 87.3 Up 09:20:23 - 09:40:30 11383
Wenatchee 09:30:38 -17.5 AT Down 31.4 87.2 Up 09:20:34 - 09:40:41 11359
Manson/Chelan 09:30:38 -17.0 AT Down 31.6 87.6 Up 09:20:34 - 09:40:41 11328
Brewster 09:30:42 -16.7 AT Down 31.8 88.0 Up 09:20:38 - 09:40:45 11305
Okanogan 09:30:40 -16.4 AT Down 32.0 88.3 Up 09:20:37 - 09:40:44 11283
Anarchist Mountain Observatory 09:30:47 -15.7 AT Down 32.1 88.9 Up 09:20:44 - 09:40:51 11242
Oliver 09:30:47 -15.6 AT Down 32.0 88.9 Up 09:20:44 - 09:40:51 11238
Penticton 09:30:44 -15.3 AT Down 32.0 89.1 Up 09:20:40 - 09:40:47 11218
Summerland 09:30:48 -15.3 AT Down 32.0 89.1 Up 09:20:44 - 09:40:51 11218
Peachland 09:30:48 -15.1 AT Down 31.9 89.1 Up 09:20:45 - 09:40:52 11213
Kelowna 09:30:48 -15.0 AT Down 32.1 89.4 Up 09:20:44 - 09:40:51 11197
Kamloops 09:30:54 -14.4 AT Down 31.5 89.2 Up 09:20:51 - 09:40:58 11179
CU-SBO 09:29:40 -18.6 Dark Down 42.1 91.9 Up 09:19:37 - 09:39:44 11018
Nikitin 09:29:40 -18.5 Dark Down 42.2 92.0 Up 09:19:37 - 09:39:44 11012
Dunrhomin 09:29:41 -18.4 Dark Down 42.2 92.2 Up 09:19:38 - 09:39:45 11005
Sleaford 09:30:51 -8.9 NT Down 40.4 102.2 Up 09:20:47 - 09:40:54 10560

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 444030, (2028/06/01 09:28UT)
Object            RA         Dec     mag  sep  mel
Deneb          20:41:25.9 +45:16:49  1.3 33.02 122
Scheat         23:03:46.8 +28:05:01  2.4  5.14 153
48Mu Peg       22:50:00.4 +24:36:05  3.5  0.51 155
PPM 114817     22:47:12.9 +23:59:06  8.2  0.40 155
PPM 114826     22:48:05.5 +23:59:54  9.8  0.34 155
444030         22:48:05.8 +24:20:11 16.5       155
Positions are for J2000

Event circumstances last updated at 2024/03/07 04:25:04 UT

Marc W. Buie, Southwest Research Institute

RECON