RECON: TNO occultation with 523749

Event between (523749) 14UR224 and star GA1080:01300919 with event index number of 2372845

Geocentric closest approach at 2028/10/30 12:00:48 UTC

J2000 position of star is 05:44:30.3 +19:27:47
Equinox of date position of star is 05:45:55.4 +19:28:18
Stellar brightness G=16.6, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 81 degrees from the moon. Moon is 92% illuminated.
Apparent brightness V=21.6

[RECON map]
Object is 39.3 AU from the Sun and 38.6 AU from the Earth.
Apparent velocity is 15.0 km/sec on the sky relative to the star, or, 1.9 arcsec/hr.
The 1-sigma error in the time of the event is 219 seconds.
The 1-sigma cross-track error in the shadow position is 1464 km.
The sky-plane scale is 28010.0 km/arcsec.

The object has an absolute magnitude Hv=5.6
Diameter=457.1 km assuming a 5% albedo -- 31.1 sec chord
Diameter=186.6 km assuming a 30% albedo -- 12.7 sec chord
Dynamical classification is SCATNEAR
 
 
 
 
 
 

Star training set for 523749, (2028/10/30 11:59UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:56:44.0 +07:24:36  0.4 12.33  85
Alnath         05:28:07.0 +28:37:45  1.6 10.04  77
PPM 121513     05:54:06.0 +19:52:21  6.4  1.90  83
PPM 121323     05:45:15.5 +19:33:05  8.5  0.24  81
523749         05:46:12.6 +19:28:24 16.6        82
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 4.1 sigma about the mid-time.
The median site spacing is 35.0 km RECON observability=1.0 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)
Sleaford 11:58:11 -18.6 Dark Down 51.3 222.8 Up 11:43:11 - 12:13:11 -2908
Kamloops 11:59:11 -27.5 Dark Up 57.2 202.4 Up 11:44:11 - 12:14:11 -2978
Kelowna 11:59:07 -27.1 Dark Up 57.7 204.4 Up 11:44:07 - 12:14:07 -3063
Peachland 11:59:08 -27.3 Dark Up 57.9 204.0 Up 11:44:08 - 12:14:08 -3071
Summerland 11:59:08 -27.3 Dark Up 58.0 204.2 Up 11:44:08 - 12:14:08 -3087
Penticton 11:59:07 -27.2 Dark Up 58.1 204.4 Up 11:44:07 - 12:14:07 -3094
Oliver 11:59:08 -27.3 Dark Up 58.4 204.7 Up 11:44:08 - 12:14:08 -3128
Anarchist Mountain Observatory 11:59:06 -27.2 Dark Up 58.5 205.1 Up 11:44:06 - 12:14:06 -3146
Victoria 11:59:25 -29.9 Dark Up 59.9 198.4 Up 11:44:25 - 12:14:25 -3160
Okanogan 11:59:07 -27.5 Dark Up 59.1 205.2 Up 11:44:07 - 12:14:07 -3208
Brewster 11:59:08 -27.6 Dark Up 59.4 205.0 Up 11:44:08 - 12:14:08 -3233
Manson/Chelan 11:59:11 -27.9 Dark Up 59.7 204.6 Up 11:44:11 - 12:14:11 -3251
Wenatchee 11:59:11 -28.1 Dark Up 60.2 204.6 Up 11:44:11 - 12:14:11 -3297
Ellensburg 11:59:12 -28.3 Dark Up 60.6 204.5 Up 11:44:12 - 12:14:12 -3336
Yakima 11:59:12 -28.4 Dark Up 61.0 204.8 Up 11:44:12 - 12:14:12 -3376
Toppenish/White Swan 11:59:11 -28.3 Dark Up 61.2 205.3 Up 11:44:11 - 12:14:11 -3399
PNWRO 11:59:04 -27.4 Dark Down 61.0 208.3 Up 11:44:04 - 12:14:04 -3448
The Dalles 11:59:16 -29.0 Dark Up 62.1 204.4 Up 11:44:16 - 12:14:16 -3470
Maupin 11:59:15 -29.0 Dark Up 62.4 204.9 Up 11:44:15 - 12:14:15 -3513
Sisters 11:59:18 -29.5 Dark Up 63.4 204.7 Up 11:44:18 - 12:14:18 -3598
Bend 11:59:17 -29.3 Dark Up 63.5 205.4 Up 11:44:17 - 12:14:17 -3624
Oregon Observatory 11:59:17 -29.4 Dark Up 63.7 205.3 Up 11:44:17 - 12:14:17 -3641
Chiloquin 11:59:19 -29.9 Dark Up 65.0 205.6 Up 11:44:19 - 12:14:19 -3771
Klamath Falls 11:59:19 -29.9 Dark Up 65.3 206.1 Up 11:44:19 - 12:14:19 -3807
Cedarville 11:59:11 -28.9 Dark Up 65.4 210.2 Up 11:44:11 - 12:14:11 -3894
Fall River/Burney 11:59:17 -29.8 Dark Up 66.2 208.1 Up 11:44:17 - 12:14:17 -3933
Greenville 11:59:16 -29.6 Dark Up 66.9 210.1 Up 11:44:16 - 12:14:16 -4031
Gimple 11:59:15 -29.5 Dark Up 66.8 210.3 Up 11:44:15 - 12:14:15 -4032
Quincy 11:59:16 -29.6 Dark Up 67.1 210.4 Up 11:44:16 - 12:14:16 -4053
Portola 11:59:13 -29.3 Dark Up 67.0 211.5 Up 11:44:13 - 12:14:13 -4070
Reno 11:59:09 -28.8 Dark Down 66.9 213.3 Up 11:44:09 - 12:14:09 -4104
Dunrhomin 11:57:53 -17.8 AT Down 58.6 236.7 Up 11:42:53 - 12:12:53 -4107
Nikitin 11:57:52 -17.8 AT Down 58.7 236.9 Up 11:42:52 - 12:12:52 -4126
CU-SBO 11:57:54 -17.9 AT Down 58.8 236.9 Up 11:42:54 - 12:12:54 -4133
Carson City 11:59:10 -28.8 Dark Down 67.2 213.8 Up 11:44:10 - 12:14:10 -4142
Gardnerville 11:59:10 -28.8 Dark Down 67.4 214.2 Up 11:44:10 - 12:14:10 -4168
Yerington 11:59:07 -28.3 Dark Down 67.1 215.4 Up 11:44:07 - 12:14:07 -4168
Hawthorne 11:59:03 -28.0 Dark Down 67.3 217.1 Up 11:44:03 - 12:14:03 -4222
Lee Vining 11:59:06 -28.4 Dark Down 67.9 216.9 Up 11:44:06 - 12:14:06 -4277
Bishop 11:59:02 -27.9 Dark Down 68.1 219.4 Up 11:44:02 - 12:14:02 -4347
Beatty 11:58:53 -26.6 Dark Down 67.6 223.4 Up 11:43:53 - 12:13:53 -4410
Patrick 11:58:38 -24.4 Dark Down 66.9 231.4 Up 11:43:38 - 12:13:38 -4590
Laughlin/Bullhead City 11:58:41 -24.9 Dark Down 67.5 230.6 Up 11:43:41 - 12:13:41 -4612
Lake Havasu City 11:58:40 -24.7 Dark Down 67.7 232.3 Up 11:43:40 - 12:13:40 -4686
Wildwood 11:59:04 -28.2 Dark Down 70.6 224.7 Up 11:44:04 - 12:14:04 -4695
Idyllwild 11:58:53 -26.7 Dark Down 69.7 229.4 Up 11:43:53 - 12:13:53 -4750
George/Scottsdale 11:58:26 -22.7 Dark Down 66.5 237.9 Up 11:43:26 - 12:13:26 -4785
Calipatria 11:58:47 -25.7 Dark Down 69.3 232.9 Up 11:43:47 - 12:13:47 -4825
Yuma 11:58:41 -25.0 Dark Down 69.0 235.5 Up 11:43:41 - 12:13:41 -4879

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 523749, (2028/10/30 11:59UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:55:10.3 +07:24:26  0.4 12.33  85
Alnath         05:26:17.6 +28:36:23  1.6 10.04  77
PPM 121513     05:52:23.4 +19:52:04  6.4  1.90  83
PPM 121323     05:43:33.2 +19:32:26  8.5  0.24  81
523749         05:44:30.3 +19:27:47 16.6        81
Positions are for J2000

Event circumstances last updated at 2023/12/24 04:43:45 UT

Marc W. Buie, Southwest Research Institute

RECON