RECON: TNO occultation with 363401

Event between (363401) 03LB7 and star GA0640:19516707 with event index number of 1776747

Geocentric closest approach at 2027/06/21 07:09:44 UTC

J2000 position of star is 17:45:05.6 -24:48:51
Equinox of date position of star is 17:46:35.9 -24:49:21
Stellar brightness G=16.2, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 28 degrees from the moon. Moon is 95% illuminated.
Apparent brightness V=22.9

[RECON map]
Object is 42.1 AU from the Sun and 41.1 AU from the Earth.
Apparent velocity is 24.5 km/sec on the sky relative to the star, or, 3.0 arcsec/hr.
The 1-sigma error in the time of the event is 581 seconds.
The 1-sigma cross-track error in the shadow position is 2629 km.
The sky-plane scale is 29809.8 km/arcsec.

The object has an absolute magnitude Hv=6.7
Diameter=275.4 km assuming a 5% albedo -- 11.2 sec chord
Diameter=112.4 km assuming a 30% albedo -- 4.6 sec chord
Dynamical classification is CLASSICAL
 
 
 
 
 
 

Star training set for 363401, (2027/06/21 07:10UT)
Object            RA         Dec     mag  sep  mel
Antares        16:31:05.8 -26:29:26  0.9 17.12  45
35Eta Oph      17:11:57.3 -15:45:25  2.6 12.19  38
PPM 267497     17:56:35.6 -24:53:24  6.4  2.23  26
PPM 267267     17:48:06.2 -24:08:59  8.4  0.74  28
PPM 267223     17:46:36.0 -24:41:37  8.8  0.14  28
363401         17:46:47.0 -24:49:24 16.2        28
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 1.5 sigma about the mid-time.
The median site spacing is 12.8 km RECON observability=0.6 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 07:09:37 -14.5 AT Up 13.0 184.2 Really Low 06:54:37 - 07:24:37 13295
Kamloops 07:10:18 -15.0 AT Up 14.0 170.8 Really Low 06:55:18 - 07:25:18 13217
Kelowna 07:10:17 -15.9 AT Up 14.9 171.6 Really Low 06:55:17 - 07:25:17 13199
Peachland 07:10:17 -16.0 AT Up 15.0 171.4 Really Low 06:55:17 - 07:25:17 13194
Summerland 07:10:17 -16.1 AT Up 15.1 171.4 Really Low 06:55:17 - 07:25:17 13190
Penticton 07:10:16 -16.2 AT Up 15.2 171.5 Really Low 06:55:16 - 07:25:16 13188
Oliver 07:10:16 -16.5 AT Up 15.6 171.5 Really Low 06:55:16 - 07:25:16 13177
Anarchist Mountain Observatory 07:10:16 -16.7 AT Up 15.8 171.7 Really Low 06:55:16 - 07:25:16 13174
Okanogan 07:10:17 -17.3 AT Up 16.4 171.5 Really Low 06:55:17 - 07:25:17 13151
Brewster 07:10:18 -17.6 AT Up 16.6 171.3 Really Low 06:55:18 - 07:25:18 13141
Manson/Chelan 07:10:19 -17.7 AT Up 16.8 170.9 Really Low 06:55:19 - 07:25:19 13131
Victoria 07:10:28 -16.6 AT Up 15.8 167.9 Really Low 06:55:28 - 07:25:28 13128
Wenatchee 07:10:20 -18.2 Dark Up 17.2 170.7 Really Low 06:55:20 - 07:25:20 13114
Ellensburg 07:10:20 -18.5 Dark Up 17.6 170.5 Really Low 06:55:20 - 07:25:20 13098
Yakima 07:10:21 -18.9 Dark Up 18.0 170.5 Really Low 06:55:21 - 07:25:21 13083
Toppenish/White Swan 07:10:20 -19.2 Dark Up 18.3 170.6 Really Low 06:55:20 - 07:25:20 13076
PNWRO 07:10:16 -19.7 Dark Up 18.8 172.0 Really Low 06:55:16 - 07:25:16 13073
The Dalles 07:10:23 -19.8 Dark Up 18.9 169.8 Really Low 06:55:23 - 07:25:23 13041
Maupin 07:10:23 -20.2 Dark Up 19.4 169.9 Really Low 06:55:23 - 07:25:23 13026
Sisters 07:10:25 -21.0 Dark Up 20.2 169.4 Low 06:55:25 - 07:25:25 12988
Bend 07:10:24 -21.3 Dark Up 20.4 169.6 Low 06:55:24 - 07:25:24 12980
Oregon Observatory 07:10:25 -21.4 Dark Up 20.6 169.5 Low 06:55:25 - 07:25:25 12972
Chiloquin 07:10:27 -22.6 Dark Up 21.8 169.0 Low 06:55:27 - 07:25:27 12913
Klamath Falls 07:10:27 -23.0 Dark Up 22.2 169.0 Low 06:55:27 - 07:25:27 12899
Cedarville 07:10:22 -23.9 Dark Up 23.1 170.5 Low 06:55:22 - 07:25:22 12881
Dunrhomin 07:09:33 -26.3 Dark Up 24.8 185.2 Low 06:54:33 - 07:24:33 12868
Nikitin 07:09:32 -26.5 Dark Up 24.9 185.2 Low 06:54:32 - 07:24:32 12860
CU-SBO 07:09:33 -26.5 Dark Up 25.0 185.1 Low 06:54:33 - 07:24:33 12857
Fall River/Burney 07:10:26 -24.2 Dark Up 23.4 169.3 Low 06:55:26 - 07:25:26 12848
Gimple 07:10:25 -25.2 Dark Up 24.3 169.8 Low 06:55:25 - 07:25:25 12810
Greenville 07:10:25 -25.1 Dark Up 24.3 169.7 Low 06:55:25 - 07:25:25 12810
Quincy 07:10:25 -25.3 Dark Up 24.5 169.7 Low 06:55:25 - 07:25:25 12800
Portola 07:10:24 -25.5 Dark Up 24.7 170.1 Low 06:55:24 - 07:25:24 12798
Reno 07:10:22 -25.9 Dark Up 25.1 170.7 Low 06:55:22 - 07:25:22 12790
Carson City 07:10:22 -26.3 Dark Up 25.4 170.7 Low 06:55:22 - 07:25:22 12773
Yerington 07:10:20 -26.6 Dark Up 25.7 171.3 Low 06:55:20 - 07:25:20 12768
Gardnerville 07:10:22 -26.5 Dark Up 25.7 170.8 Low 06:55:22 - 07:25:22 12761
Hawthorne 07:10:18 -27.1 Dark Up 26.2 171.8 Low 06:55:18 - 07:25:18 12748
Lee Vining 07:10:20 -27.6 Dark Up 26.7 171.3 Low 06:55:20 - 07:25:20 12717
Bishop 07:10:18 -28.3 Dark Up 27.4 172.0 Low 06:55:18 - 07:25:18 12690
Beatty 07:10:12 -29.0 Dark Up 28.0 173.6 Low 06:55:12 - 07:25:12 12676
Patrick 07:10:02 -30.8 Dark Up 29.7 176.5 Low 06:55:02 - 07:25:02 12610
Laughlin/Bullhead City 07:10:05 -31.0 Dark Up 29.9 175.7 Low 06:55:05 - 07:25:05 12592
Lake Havasu City 07:10:04 -31.7 Dark Up 30.6 176.0 Up 06:55:04 - 07:25:04 12556
George/Scottsdale 07:09:55 -32.7 Dark Up 31.5 178.5 Up 06:54:55 - 07:24:55 12521
Wildwood 07:10:20 -31.4 Dark Up 30.6 171.5 Up 06:55:20 - 07:25:20 12508
Idyllwild 07:10:13 -32.1 Dark Up 31.2 173.5 Up 06:55:13 - 07:25:13 12501
Calipatria 07:10:09 -32.9 Dark Up 31.9 174.7 Up 06:55:09 - 07:25:09 12470
Yuma 07:10:05 -33.4 Dark Up 32.4 175.6 Up 06:55:05 - 07:25:05 12449

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 363401, (2027/06/21 07:10UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 17.12  45
35Eta Oph      17:10:22.7 -15:43:29  2.6 12.19  38
PPM 267497     17:54:54.1 -24:53:13  6.4  2.23  26
PPM 267267     17:46:25.3 -24:08:29  8.4  0.74  28
PPM 267223     17:44:54.7 -24:41:02  8.8  0.14  28
363401         17:45:05.6 -24:48:51 16.2        28
Positions are for J2000

Event circumstances last updated at 2024/06/21 21:29:02 UT

Marc W. Buie, Southwest Research Institute

RECON