RECON: TNO occultation with 469362

Event between (469362) 01KB77 and star GA0820:11827932 with event index number of 1752655

Geocentric closest approach at 2027/09/08 04:29:20 UTC

J2000 position of star is 18:43:49.4 -07:26:51
Equinox of date position of star is 18:45:08.8 -07:25:16
Stellar brightness G=16.1, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 29 degrees from the moon. Moon is 54% illuminated.
Apparent brightness V=22.4

[RECON map]
Object is 28.4 AU from the Sun and 28.0 AU from the Earth.
Apparent velocity is 8.9 km/sec on the sky relative to the star, or, 1.6 arcsec/hr.
The 1-sigma error in the time of the event is 772 seconds.
The 1-sigma cross-track error in the shadow position is 4011 km.
The sky-plane scale is 20306.3 km/arcsec.

The object has an absolute magnitude Hv=7.7
Diameter=199.5 km assuming a 5% albedo -- 19.4 sec chord
Diameter=81.5 km assuming a 30% albedo -- 7.9 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 

Star training set for 469362, (2027/09/08 04:29UT)
Object            RA         Dec     mag  sep  mel
Antares        16:31:06.6 -26:29:27  0.9 37.13  10
Nunki          18:56:58.8 -26:15:35  2.0 19.05  22
PPM 202054     18:44:05.8 -07:02:41  6.5  0.48  29
PPM 202078     18:45:13.6 -07:42:05  8.5  0.28  29
PPM 202088     18:45:57.8 -07:35:18  8.7  0.23  29
469362         18:45:19.2 -07:25:04 16.1        29
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 1.2 sigma about the mid-time.
The median site spacing is 25.0 km RECON observability=1.0 and success probability=9.3%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Victoria 04:21:15 -16.1 AT Up 33.6 189.5 Up 04:06:15 - 04:36:15 -2951
Kamloops 04:20:50 -16.7 AT Up 31.1 192.7 Up 04:05:50 - 04:35:50 -3002
Peachland 04:20:52 -17.5 AT Up 31.9 193.5 Up 04:05:52 - 04:35:52 -3082
Kelowna 04:20:48 -17.6 AT Up 31.8 193.8 Up 04:05:48 - 04:35:48 -3092
Summerland 04:20:52 -17.6 AT Up 32.1 193.6 Up 04:05:52 - 04:35:52 -3095
Penticton 04:20:47 -17.7 AT Up 32.1 193.7 Up 04:05:47 - 04:35:47 -3105
Oliver 04:20:50 -17.9 AT Up 32.5 193.8 Up 04:05:50 - 04:35:50 -3124
Anarchist Mountain Observatory 04:20:51 -18.1 Dark Up 32.6 194.1 Up 04:05:51 - 04:35:51 -3143
Manson/Chelan 04:21:00 -18.3 Dark Up 33.8 193.3 Up 04:06:00 - 04:36:00 -3162
Okanogan 04:20:55 -18.3 Dark Up 33.2 193.9 Up 04:05:55 - 04:35:55 -3167
Brewster 04:20:56 -18.4 Dark Up 33.5 193.7 Up 04:05:56 - 04:35:56 -3171
Wenatchee 04:20:59 -18.4 Dark Up 34.3 193.2 Up 04:05:59 - 04:35:59 -3179
Ellensburg 04:21:03 -18.5 Dark Up 34.7 193.0 Up 04:06:03 - 04:36:03 -3189
Yakima 04:21:08 -18.7 Dark Up 35.1 193.1 Up 04:06:08 - 04:36:08 -3211
The Dalles 04:21:15 -18.9 Dark Up 36.2 192.5 Up 04:06:15 - 04:36:15 -3231
Toppenish/White Swan 04:21:04 -18.9 Dark Up 35.3 193.3 Up 04:06:04 - 04:36:04 -3232
Maupin 04:21:16 -19.2 Dark Up 36.6 192.7 Up 04:06:16 - 04:36:16 -3260
Sisters 04:21:22 -19.3 Dark Up 37.5 192.3 Up 04:06:22 - 04:36:22 -3281
Bend 04:21:23 -19.6 Dark Up 37.7 192.7 Up 04:06:23 - 04:36:23 -3310
Oregon Observatory 04:21:22 -19.6 Dark Up 37.9 192.5 Up 04:06:22 - 04:36:22 -3312
PNWRO 04:21:00 -20.0 Dark Up 35.4 195.2 Up 04:06:00 - 04:36:00 -3338
Chiloquin 04:21:31 -20.0 Dark Up 39.2 192.3 Up 04:06:31 - 04:36:31 -3363
Klamath Falls 04:21:30 -20.2 Dark Up 39.6 192.5 Up 04:06:30 - 04:36:30 -3388
Fall River/Burney 04:21:34 -21.0 Dark Up 40.6 193.2 Up 04:06:34 - 04:36:34 -3481
Cedarville 04:21:23 -21.6 Dark Up 40.0 194.6 Up 04:06:23 - 04:36:23 -3526
Greenville 04:21:38 -21.8 Dark Up 41.4 194.0 Up 04:06:38 - 04:36:38 -3563
Gimple 04:21:38 -21.8 Dark Up 41.4 194.1 Up 04:06:38 - 04:36:38 -3568
Quincy 04:21:36 -21.9 Dark Up 41.6 194.0 Up 04:06:36 - 04:36:36 -3575
Portola 04:21:34 -22.3 Dark Up 41.7 194.6 Up 04:06:34 - 04:36:34 -3613
Sleaford 04:19:38 -22.7 Dark Up 26.7 208.0 Low 04:04:38 - 04:34:38 -3643
Reno 04:21:33 -22.8 Dark Up 41.8 195.5 Up 04:06:33 - 04:36:33 -3670
Carson City 04:21:32 -23.0 Dark Up 42.1 195.7 Up 04:06:32 - 04:36:32 -3694
Gardnerville 04:21:36 -23.2 Dark Up 42.4 195.8 Up 04:06:36 - 04:36:36 -3712
Yerington 04:21:30 -23.5 Dark Up 42.2 196.5 Up 04:06:30 - 04:36:30 -3746
Hawthorne 04:21:31 -24.1 Dark Up 42.5 197.3 Up 04:06:31 - 04:36:31 -3809
Lee Vining 04:21:36 -24.1 Dark Up 43.2 196.9 Up 04:06:36 - 04:36:36 -3814
Bishop 04:21:36 -24.9 Dark Up 43.6 198.0 Up 04:06:36 - 04:36:36 -3900
Beatty 04:21:25 -26.2 Dark Up 43.6 200.3 Up 04:06:25 - 04:36:25 -4036
Wildwood 04:21:54 -26.4 Dark Up 46.7 198.9 Up 04:06:54 - 04:36:54 -4103
Idyllwild 04:21:41 -27.9 Dark Up 46.5 201.5 Up 04:06:41 - 04:36:41 -4253
Laughlin/Bullhead City 04:21:22 -28.6 Dark Up 44.5 203.7 Up 04:06:22 - 04:36:22 -4297
Patrick 04:21:18 -29.0 Dark Up 44.1 204.5 Up 04:06:18 - 04:36:18 -4326
Lake Havasu City 04:21:22 -29.1 Dark Up 45.1 204.3 Up 04:06:22 - 04:36:22 -4360
Calipatria 04:21:38 -29.0 Dark Up 46.7 203.4 Up 04:06:38 - 04:36:38 -4376
Yuma 04:21:33 -29.9 Dark Up 46.8 204.8 Up 04:06:33 - 04:36:33 -4467
Dunrhomin 04:20:04 -31.3 Dark Up 36.6 212.7 Up 04:05:04 - 04:35:04 -4518
Nikitin 04:20:08 -31.4 Dark Up 36.8 212.8 Up 04:05:08 - 04:35:08 -4531
CU-SBO 04:20:08 -31.4 Dark Up 36.9 212.7 Up 04:05:08 - 04:35:08 -4531
George/Scottsdale 04:21:10 -31.2 Dark Up 44.9 207.8 Up 04:06:10 - 04:36:10 -4579

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 469362, (2027/09/08 04:29UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 37.13  10
Nunki          18:55:15.9 -26:17:49  2.0 19.05  22
PPM 202054     18:42:36.1 -07:04:26  6.5  0.48  29
PPM 202078     18:43:43.5 -07:43:52  8.5  0.28  29
PPM 202088     18:44:27.9 -07:37:06  8.7  0.23  29
469362         18:43:49.4 -07:26:51 16.1        29
Positions are for J2000

Event circumstances last updated at 2024/06/22 21:28:29 UT

Marc W. Buie, Southwest Research Institute

RECON