RECON: TNO occultation with 459865

Event between (459865) 13XZ8 and star GA0700:30030039 with event index number of 2285712

Geocentric closest approach at 2027/03/09 12:39:02 UTC

J2000 position of star is 18:49:23.5 -18:48:09
Equinox of date position of star is 18:50:49.6 -18:46:23
Stellar brightness G=15.3, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 80 degrees from the moon. Moon is 1% illuminated.
Apparent brightness V=20.4

[RECON map]
Object is 11.0 AU from the Sun and 11.4 AU from the Earth.
Apparent velocity is 21.2 km/sec on the sky relative to the star, or, 9.3 arcsec/hr.
The 1-sigma error in the time of the event is 48 seconds.
The 1-sigma cross-track error in the shadow position is 718 km.
The sky-plane scale is 8258.0 km/arcsec.

The object has an absolute magnitude Hv=9.5
Diameter=70.8 km assuming a 5% albedo -- 3.6 sec chord
Diameter=28.9 km assuming a 30% albedo -- 1.5 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 459865, (2027/03/09 12:34UT)
Object            RA         Dec     mag  sep  mel
Antares        16:31:04.7 -26:29:24  0.9 33.08 112
Nunki          18:56:56.9 -26:15:37  2.0  7.62  80
PPM 234997     18:47:37.4 -19:34:32  6.3  1.13  81
PPM 235080     18:51:11.0 -18:52:30  8.5  0.12  80
PPM 235070     18:50:58.6 -18:44:14  8.6  0.03  80
459865         18:50:59.2 -18:46:11 15.3        80
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 28.5 km RECON observability=0.2 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)
Kamloops 12:38:20 -18.1 Dark Down 9.6 136.2 Really Low 12:33:48 - 12:42:52 5668
Kelowna 12:38:19 -17.8 AT Down 10.6 136.9 Really Low 12:33:47 - 12:42:51 5646
Peachland 12:38:18 -18.0 Dark Down 10.5 136.6 Really Low 12:33:46 - 12:42:50 5644
Summerland 12:38:18 -18.0 Dark Down 10.7 136.6 Really Low 12:33:46 - 12:42:50 5640
Penticton 12:38:18 -17.9 AT Down 10.8 136.7 Really Low 12:33:46 - 12:42:50 5638
Sleaford 12:39:03 -8.9 NT Down 14.0 149.3 Really Low 12:34:31 - 12:43:35 5629
Oliver 12:38:17 -18.0 Dark Down 11.0 136.7 Really Low 12:33:45 - 12:42:49 5629
Anarchist Mountain Observatory 12:38:16 -18.0 AT Down 11.2 136.8 Really Low 12:33:44 - 12:42:48 5625
Victoria 12:38:05 -20.7 Dark Down 9.7 133.3 Really Low 12:33:33 - 12:42:37 5612
Okanogan 12:38:14 -18.3 Dark Down 11.6 136.5 Really Low 12:33:42 - 12:42:46 5607
Brewster 12:38:12 -18.5 Dark Down 11.7 136.3 Really Low 12:33:40 - 12:42:44 5599
Manson/Chelan 12:38:10 -18.8 Dark Down 11.7 136.0 Really Low 12:33:38 - 12:42:42 5594
Wenatchee 12:38:08 -19.0 Dark Down 11.9 135.7 Really Low 12:33:36 - 12:42:40 5580
Ellensburg 12:38:06 -19.3 Dark Down 12.1 135.5 Really Low 12:33:34 - 12:42:38 5568
Yakima 12:38:05 -19.4 Dark Down 12.4 135.4 Really Low 12:33:33 - 12:42:37 5555
Toppenish/White Swan 12:38:05 -19.3 Dark Down 12.6 135.5 Really Low 12:33:33 - 12:42:37 5548
PNWRO 12:38:07 -18.4 Dark Down 13.6 136.7 Really Low 12:33:35 - 12:42:39 5534
The Dalles 12:38:00 -20.1 Dark Down 12.8 134.7 Really Low 12:33:28 - 12:42:32 5523
Maupin 12:37:59 -20.1 Dark Down 13.1 134.7 Really Low 12:33:27 - 12:42:31 5509
Sisters 12:37:54 -20.7 Dark Down 13.5 134.2 Really Low 12:33:22 - 12:42:26 5479
Bend 12:37:54 -20.6 Dark Down 13.8 134.3 Really Low 12:33:22 - 12:42:26 5471
Oregon Observatory 12:37:53 -20.7 Dark Down 13.8 134.2 Really Low 12:33:21 - 12:42:25 5465
Chiloquin 12:37:47 -21.3 Dark Down 14.5 133.6 Really Low 12:33:15 - 12:42:19 5415
Klamath Falls 12:37:46 -21.4 Dark Down 14.8 133.6 Really Low 12:33:14 - 12:42:18 5402
Cedarville 12:37:48 -20.3 Dark Down 16.1 134.8 Really Low 12:33:16 - 12:42:20 5373
Fall River/Burney 12:37:43 -21.4 Dark Down 15.8 133.7 Really Low 12:33:11 - 12:42:15 5354
Greenville 12:37:41 -21.2 Dark Down 16.7 133.8 Really Low 12:33:09 - 12:42:13 5315
Gimple 12:37:42 -21.2 Dark Down 16.7 133.9 Really Low 12:33:10 - 12:42:14 5315
Quincy 12:37:41 -21.3 Dark Down 16.8 133.8 Really Low 12:33:09 - 12:42:13 5306
Portola 12:37:42 -20.9 Dark Down 17.2 134.1 Really Low 12:33:10 - 12:42:14 5301
Reno 12:37:43 -20.5 Dark Down 17.7 134.6 Really Low 12:33:11 - 12:42:15 5288
Carson City 12:37:41 -20.6 Dark Down 18.0 134.5 Really Low 12:33:09 - 12:42:13 5272
Yerington 12:37:44 -20.1 Dark Down 18.5 135.0 Really Low 12:33:12 - 12:42:16 5262
Gardnerville 12:37:41 -20.6 Dark Down 18.2 134.5 Really Low 12:33:09 - 12:42:13 5261
Hawthorne 12:37:43 -19.8 Dark Down 19.1 135.3 Really Low 12:33:11 - 12:42:15 5240
Dunrhomin 12:38:34 -9.1 NT Down 24.3 147.8 Low 12:34:02 - 12:43:06 5226
Nikitin 12:38:32 -9.1 NT Down 24.5 147.7 Low 12:34:00 - 12:43:04 5218
CU-SBO 12:38:32 -9.2 NT Down 24.5 147.6 Low 12:34:00 - 12:43:04 5216
Lee Vining 12:37:40 -20.3 Dark Down 19.2 134.8 Really Low 12:33:08 - 12:42:12 5216
Bishop 12:37:40 -19.8 Dark Down 20.0 135.2 Low 12:33:08 - 12:42:12 5185
Beatty 12:37:44 -18.6 Dark Down 21.3 136.5 Low 12:33:12 - 12:42:16 5157
Patrick 12:37:49 -16.5 AT Down 24.0 138.5 Low 12:33:17 - 12:42:21 5069
Laughlin/Bullhead City 12:37:46 -17.1 AT Down 23.8 137.8 Low 12:33:14 - 12:42:18 5059
Lake Havasu City 12:37:45 -16.9 AT Down 24.4 137.8 Low 12:33:13 - 12:42:17 5023
Wildwood 12:37:30 -20.6 Dark Down 22.2 134.1 Low 12:32:58 - 12:42:02 5018
Idyllwild 12:37:34 -19.0 Dark Down 23.6 135.6 Low 12:33:02 - 12:42:06 4994
George/Scottsdale 12:37:51 -15.0 AT Down 26.3 139.7 Low 12:33:19 - 12:42:23 4965
Calipatria 12:37:37 -18.1 Dark Down 24.7 136.4 Low 12:33:05 - 12:42:09 4954
Yuma 12:37:38 -17.4 AT Down 25.5 137.0 Low 12:33:06 - 12:42:10 4926

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, (2027/03/09 12:34UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 33.08 112
Nunki          18:55:15.9 -26:17:49  2.0  7.62  80
PPM 234997     18:46:01.2 -19:36:23  6.3  1.13  81
PPM 235080     18:49:35.2 -18:54:29  8.5  0.12  80
PPM 235070     18:49:23.0 -18:46:12  8.6  0.03  80
459865         18:49:23.5 -18:48:09 15.3        80
Positions are for J2000

Event circumstances last updated at 2024/06/21 21:27:15 UT

Marc W. Buie, Southwest Research Institute

RECON