RECON: TNO occultation with 459865

Event between (459865) 13XZ8 and star GA0760:22025107 with event index number of 2287447

Geocentric closest approach at 2028/06/24 10:55:48 UTC

J2000 position of star is 19:19:27.5 -12:37:10
Equinox of date position of star is 19:20:49.6 -12:34:22
Stellar brightness G=16.3, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 169 degrees from the moon. Moon is 4% illuminated.
Apparent brightness V=20.3

[RECON map]
Object is 11.9 AU from the Sun and 11.0 AU from the Earth.
Apparent velocity is 20.7 km/sec on the sky relative to the star, or, 9.4 arcsec/hr.
The 1-sigma error in the time of the event is 66 seconds.
The 1-sigma cross-track error in the shadow position is 806 km.
The sky-plane scale is 7944.5 km/arcsec.

The object has an absolute magnitude Hv=9.5
Diameter=70.8 km assuming a 5% albedo -- 3.7 sec chord
Diameter=28.9 km assuming a 30% albedo -- 1.5 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 459865, (2028/06/24 10:57UT)
Object            RA         Dec     mag  sep  mel
Antares        16:31:09.5 -26:29:33  0.9 42.15 134
Nunki          18:57:01.7 -26:15:31  2.0 14.81 166
PPM 235666     19:14:51.0 -12:13:57  5.2  1.55 168
PPM 235703     19:16:15.7 -12:44:57  8.5  1.18 168
PPM 235830     19:20:48.0 -12:52:50  9.8  0.32 169
459865         19:21:03.0 -12:33:55 16.3       169
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 26.3 km RECON observability=0.4 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 10:54:05 0.3 Sun up Down 16.3 221.7 Really Low 10:48:07 - 11:00:02 6005
Kamloops 10:54:42 -6.9 NT Down 22.6 208.2 Low 10:48:44 - 11:00:39 5996
Kelowna 10:54:37 -7.2 NT Down 23.0 209.3 Low 10:48:40 - 11:00:35 5953
Peachland 10:54:38 -7.4 NT Down 23.2 209.0 Low 10:48:40 - 11:00:35 5948
Summerland 10:54:37 -7.5 NT Down 23.3 209.1 Low 10:48:40 - 11:00:35 5940
Penticton 10:54:37 -7.5 NT Down 23.3 209.2 Low 10:48:40 - 11:00:35 5937
Oliver 10:54:36 -7.8 NT Down 23.7 209.3 Low 10:48:39 - 11:00:34 5918
Anarchist Mountain Observatory 10:54:35 -7.8 NT Down 23.7 209.5 Low 10:48:38 - 11:00:33 5910
Victoria 10:54:47 -9.8 NT Down 25.4 205.6 Low 10:48:50 - 11:00:45 5891
Okanogan 10:54:35 -8.4 NT Down 24.4 209.4 Low 10:48:37 - 11:00:32 5876
Brewster 10:54:35 -8.7 NT Down 24.7 209.3 Low 10:48:37 - 11:00:32 5862
Manson/Chelan 10:54:35 -9.0 NT Down 25.0 209.0 Low 10:48:38 - 11:00:33 5851
Wenatchee 10:54:35 -9.5 NT Down 25.5 208.9 Low 10:48:38 - 11:00:33 5826
Ellensburg 10:54:35 -9.9 NT Down 25.9 208.8 Low 10:48:38 - 11:00:33 5804
Yakima 10:54:34 -10.2 NT Down 26.3 208.9 Low 10:48:37 - 11:00:32 5781
Toppenish/White Swan 10:54:33 -10.3 NT Down 26.4 209.1 Low 10:48:36 - 11:00:31 5769
PNWRO 10:54:28 -9.9 NT Down 26.2 210.7 Low 10:48:30 - 11:00:25 5744
The Dalles 10:54:35 -11.2 NT Down 27.3 208.5 Low 10:48:37 - 11:00:32 5726
Maupin 10:54:33 -11.5 NT Down 27.7 208.7 Low 10:48:36 - 11:00:31 5701
Sisters 10:54:34 -12.4 AT Down 28.6 208.4 Low 10:48:36 - 11:00:31 5651
Bend 10:54:32 -12.5 AT Down 28.7 208.7 Low 10:48:35 - 11:00:30 5636
Oregon Observatory 10:54:33 -12.7 AT Down 28.9 208.6 Low 10:48:35 - 11:00:30 5626
Chiloquin 10:54:32 -13.9 AT Down 30.2 208.5 Up 10:48:34 - 11:00:29 5546
Klamath Falls 10:54:31 -14.2 AT Down 30.5 208.7 Up 10:48:33 - 11:00:28 5524
Cedarville 10:54:24 -13.9 AT Down 30.5 210.6 Up 10:48:26 - 11:00:21 5476
Fall River/Burney 10:54:27 -14.9 AT Down 31.4 209.4 Up 10:48:30 - 11:00:25 5448
Greenville 10:54:24 -15.4 AT Down 32.0 210.2 Up 10:48:27 - 11:00:22 5387
Gimple 10:54:24 -15.4 AT Down 32.0 210.3 Up 10:48:26 - 11:00:21 5387
Quincy 10:54:24 -15.5 AT Down 32.2 210.3 Up 10:48:26 - 11:00:21 5374
Portola 10:54:22 -15.4 AT Down 32.1 210.8 Up 10:48:24 - 11:00:19 5364
Reno 10:54:19 -15.3 AT Down 32.1 211.5 Up 10:48:22 - 11:00:17 5345
Carson City 10:54:18 -15.6 AT Down 32.4 211.7 Up 10:48:21 - 11:00:16 5320
Dunrhomin 10:53:31 -6.8 NT Down 24.6 225.3 Low 10:47:33 - 10:59:28 5317
Yerington 10:54:15 -15.4 AT Down 32.3 212.4 Up 10:48:18 - 11:00:13 5305
Nikitin 10:53:30 -7.0 NT Down 24.8 225.4 Low 10:47:33 - 10:59:28 5304
Gardnerville 10:54:18 -15.7 AT Down 32.6 211.8 Up 10:48:20 - 11:00:15 5304
CU-SBO 10:53:30 -7.1 NT Down 24.9 225.3 Low 10:47:33 - 10:59:28 5301
Hawthorne 10:54:13 -15.5 AT Down 32.5 213.1 Up 10:48:16 - 11:00:11 5272
Lee Vining 10:54:14 -16.1 AT Down 33.2 212.8 Up 10:48:16 - 11:00:11 5234
Bishop 10:54:10 -16.2 AT Down 33.3 213.8 Up 10:48:12 - 11:00:07 5190
Beatty 10:54:03 -15.7 AT Down 33.0 215.6 Up 10:48:05 - 11:00:00 5150
Patrick 10:53:50 -15.1 AT Down 32.8 219.0 Up 10:47:52 - 10:59:47 5029
Laughlin/Bullhead City 10:53:52 -15.7 AT Down 33.3 218.4 Up 10:47:54 - 10:59:49 5014
Lake Havasu City 10:53:50 -16.0 AT Down 33.7 219.0 Up 10:47:52 - 10:59:47 4963
Wildwood 10:54:05 -18.8 Dark Down 36.2 214.8 Up 10:48:07 - 11:00:02 4951
Idyllwild 10:53:57 -18.0 AT Down 35.5 216.9 Up 10:48:00 - 10:59:55 4917
George/Scottsdale 10:53:39 -15.1 AT Down 33.0 221.7 Up 10:47:41 - 10:59:36 4891
Calipatria 10:53:52 -17.7 AT Down 35.4 218.3 Up 10:47:55 - 10:59:50 4864
Yuma 10:53:47 -17.5 AT Down 35.3 219.4 Up 10:47:50 - 10:59:45 4827

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 459865, (2028/06/24 10:57UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 42.15 134
Nunki          18:55:15.9 -26:17:49  2.0 14.81 166
PPM 235666     19:13:15.6 -12:16:58  5.2  1.55 168
PPM 235703     19:14:39.9 -12:48:02  8.5  1.18 168
PPM 235830     19:19:12.2 -12:56:06  9.8  0.32 169
459865         19:19:27.5 -12:37:10 16.3       169
Positions are for J2000

Event circumstances last updated at 2024/06/24 21:30:14 UT

Marc W. Buie, Southwest Research Institute

RECON