RECON: TNO occultation with 444030

Event between (444030) 04NT33 and star GA1120:16195462 with event index number of 2378408

Geocentric closest approach at 2027/10/22 02:32:09 UTC

J2000 position of star is 22:34:05.2 +23:46:30
Equinox of date position of star is 22:35:14.4 +23:54:01
Stellar brightness G=16.3, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 115 degrees from the moon. Moon is 57% illuminated.
Apparent brightness V=20.5

[RECON map]
Object is 40.3 AU from the Sun and 39.6 AU from the Earth.
Apparent velocity is 21.2 km/sec on the sky relative to the star, or, 2.7 arcsec/hr.
The 1-sigma error in the time of the event is 76 seconds.
The 1-sigma cross-track error in the shadow position is 1965 km.
The sky-plane scale is 28751.7 km/arcsec.

The object has an absolute magnitude Hv=4.4
Diameter=698.3 km assuming a 5% albedo -- 37.1 sec chord
Diameter=285.1 km assuming a 30% albedo -- 15.1 sec chord
Dynamical classification is SCATEXTD
 
 
 
 
 
 

Star training set for 444030, (2027/10/22 02:33UT)
Object            RA         Dec     mag  sep  mel
Deneb          20:42:22.8 +45:22:51  1.3 31.33 109
Scheat         23:05:07.5 +28:14:02  2.4  7.94 107
47Lam Peg      22:47:52.4 +23:42:46  3.9  2.86 113
PPM 114532     22:33:12.7 +24:00:27  8.5  0.51 115
PPM 114551     22:34:00.1 +23:39:09  9.3  0.42 115
444030         22:35:24.8 +23:55:09 16.3       115
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 11.4 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)
Victoria 02:31:28 -13.7 AT Down 53.7 120.8 Up 02:24:38 - 02:38:19 10577
Kamloops 02:31:15 -15.6 AT Down 54.1 127.0 Up 02:24:25 - 02:38:06 10441
Peachland 02:31:18 -16.0 AT Down 55.0 126.8 Up 02:24:28 - 02:38:09 10387
Summerland 02:31:19 -16.1 AT Down 55.1 126.7 Up 02:24:28 - 02:38:09 10378
The Dalles 02:31:43 -15.2 AT Down 56.5 120.0 Up 02:24:52 - 02:38:33 10377
Kelowna 02:31:18 -16.2 AT Down 55.1 127.3 Up 02:24:27 - 02:38:08 10372
Ellensburg 02:31:33 -15.6 AT Down 56.2 122.5 Up 02:24:42 - 02:38:23 10371
Penticton 02:31:19 -16.1 AT Down 55.2 126.8 Up 02:24:28 - 02:38:09 10370
Sisters 02:31:50 -14.9 AT Down 56.9 117.8 Up 02:24:59 - 02:38:40 10369
Manson/Chelan 02:31:28 -15.8 AT Down 55.9 124.1 Up 02:24:38 - 02:38:19 10368
Wenatchee 02:31:30 -15.7 AT Down 56.0 123.3 Up 02:24:40 - 02:38:21 10367
Yakima 02:31:35 -15.6 AT Down 56.4 122.0 Up 02:24:45 - 02:38:26 10362
Oliver 02:31:21 -16.2 AT Down 55.4 126.4 Up 02:24:30 - 02:38:11 10362
Maupin 02:31:43 -15.3 AT Down 56.8 119.5 Up 02:24:52 - 02:38:33 10360
Oregon Observatory 02:31:50 -15.0 AT Down 57.2 117.4 Up 02:25:00 - 02:38:41 10351
Brewster 02:31:27 -16.1 AT Down 56.0 124.8 Up 02:24:36 - 02:38:17 10351
Anarchist Mountain Observatory 02:31:22 -16.3 AT Down 55.6 126.5 Up 02:24:32 - 02:38:13 10347
Bend 02:31:48 -15.1 AT Down 57.2 117.8 Up 02:24:57 - 02:38:38 10347
Toppenish/White Swan 02:31:36 -15.7 AT Down 56.6 121.9 Up 02:24:45 - 02:38:26 10346
Okanogan 02:31:25 -16.2 AT Down 55.9 125.4 Up 02:24:34 - 02:38:15 10345
Chiloquin 02:31:57 -14.7 AT Down 57.5 115.1 Up 02:25:07 - 02:38:48 10343
Klamath Falls 02:31:57 -14.7 AT Down 57.7 114.7 Up 02:25:07 - 02:38:48 10328
Fall River/Burney 02:32:05 -15.0 AT Down 58.5 113.4 Up 02:25:14 - 02:38:55 10268
PNWRO 02:31:37 -16.8 AT Down 57.7 123.4 Up 02:24:47 - 02:38:28 10242
Greenville 02:32:08 -15.3 AT Down 59.2 112.6 Up 02:25:17 - 02:38:58 10210
Gimple 02:32:11 -15.4 AT Down 59.2 112.7 Up 02:25:20 - 02:39:01 10204
Quincy 02:32:08 -15.3 AT Down 59.3 112.3 Up 02:25:18 - 02:38:59 10204
Cedarville 02:31:59 -15.9 AT Down 59.1 115.6 Up 02:25:09 - 02:38:50 10199
Portola 02:32:08 -15.7 AT Down 59.6 112.6 Up 02:25:18 - 02:38:59 10167
Reno 02:32:08 -16.2 AT Down 60.2 112.9 Up 02:25:18 - 02:38:59 10113
Carson City 02:32:11 -16.2 AT Down 60.4 112.4 Up 02:25:20 - 02:39:01 10099
Gardnerville 02:32:14 -16.3 AT Down 60.5 112.1 Up 02:25:24 - 02:39:05 10088
Yerington 02:32:12 -16.7 AT Down 60.9 112.8 Up 02:25:21 - 02:39:02 10048
Lee Vining 02:32:17 -16.8 AT Down 61.3 111.2 Up 02:25:27 - 02:39:08 10010
Hawthorne 02:32:12 -17.1 AT Down 61.5 112.7 Up 02:25:21 - 02:39:02 9994
Bishop 02:32:18 -17.3 AT Down 62.1 111.0 Up 02:25:27 - 02:39:08 9936
Wildwood 02:32:34 -17.1 AT Down 63.0 104.8 Up 02:25:43 - 02:39:24 9828
Beatty 02:32:19 -18.6 Dark Down 63.5 112.1 Up 02:25:29 - 02:39:10 9799
Idyllwild 02:32:34 -18.7 Dark Down 64.6 106.0 Up 02:25:43 - 02:39:24 9671
Sleaford 02:30:49 -24.2 Dark Down 59.0 149.8 Up 02:23:58 - 02:37:39 9645
Laughlin/Bullhead City 02:32:25 -20.4 Dark Down 65.8 111.3 Up 02:25:34 - 02:39:15 9567
Calipatria 02:32:32 -19.7 Dark Down 65.7 106.0 Up 02:25:41 - 02:39:22 9553
Patrick 02:32:21 -21.0 Dark Down 66.2 112.7 Up 02:25:30 - 02:39:11 9523
Lake Havasu City 02:32:26 -20.7 Dark Down 66.2 110.3 Up 02:25:36 - 02:39:17 9519
Yuma 02:32:36 -20.4 Dark Down 66.6 106.0 Up 02:25:45 - 02:39:26 9465
George/Scottsdale 02:32:26 -22.7 Dark Down 68.4 111.6 Up 02:25:35 - 02:39:16 9295
Dunrhomin 02:31:40 -27.3 Dark Down 69.0 137.1 Up 02:24:50 - 02:38:31 9098
CU-SBO 02:31:43 -27.2 Dark Down 69.1 136.4 Up 02:24:53 - 02:38:34 9093
Nikitin 02:31:44 -27.3 Dark Down 69.1 136.7 Up 02:24:54 - 02:38:35 9091

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, (2027/10/22 02:33UT)
Object            RA         Dec     mag  sep  mel
Deneb          20:41:25.9 +45:16:49  1.3 31.33 109
Scheat         23:03:46.8 +28:05:01  2.4  7.94 107
47Lam Peg      22:46:32.0 +23:33:56  3.9  2.86 113
PPM 114532     22:31:53.4 +23:51:50  8.5  0.51 115
PPM 114551     22:32:40.6 +23:30:31  9.3  0.42 115
444030         22:34:05.2 +23:46:30 16.3       115
Positions are for J2000

Event circumstances last updated at 2024/03/06 04:33:20 UT

Marc W. Buie, Southwest Research Institute

RECON