RECON: TNO occultation with 307251

Event between (307251) 02KW14 and star GA0620:18237835 with event index number of 2296187

Geocentric closest approach at 2024/06/01 06:23:39 UTC

J2000 position of star is 17:27:59.2 -27:08:06
Equinox of date position of star is 17:29:29.7 -27:09:12
Stellar brightness G=14.9, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 99 degrees from the moon. Moon is 33% illuminated.
Apparent brightness V=21.9

[RECON map]
Object is 43.3 AU from the Sun and 42.3 AU from the Earth.
Apparent velocity is 24.2 km/sec on the sky relative to the star, or, 2.8 arcsec/hr.
The 1-sigma error in the time of the event is 629 seconds.
The 1-sigma cross-track error in the shadow position is 4288 km.
The sky-plane scale is 30676.5 km/arcsec.

The object has an absolute magnitude Hv=5.5
Diameter=457.1 km assuming a 5% albedo -- 19.7 sec chord
Diameter=186.6 km assuming a 30% albedo -- 8.0 sec chord
Dynamical classification is SCATEXTD
 
 
 
 
 
 

Star training set for 307251, (2024/06/01 06:24UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:54.5 -26:29:03  0.9 13.09 112
34Ups Sco      17:32:25.6 -37:18:46  2.7 10.18  97
PPM 266967     17:33:15.4 -26:17:10  6.3  1.20  98
PPM 266861     17:27:37.8 -27:37:10  7.9  0.63  99
PPM 266873     17:28:15.6 -27:15:52  9.7  0.30  99
307251         17:29:30.8 -27:09:12 14.9        98
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 1.4 sigma about the mid-time.
The median site spacing is 10.4 km RECON observability=0.2 and success probability=0.4%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Sleaford 06:24:40 -15.3 AT Down 8.6 160.7 Really Low 06:09:40 - 06:39:40 12786
Kamloops 06:25:17 -14.3 AT Down 6.0 148.4 Really Low 06:10:17 - 06:40:17 12523
Kelowna 06:25:18 -15.3 AT Down 7.0 149.1 Really Low 06:10:18 - 06:40:18 12514
Peachland 06:25:18 -15.3 AT Down 7.0 148.9 Really Low 06:10:18 - 06:40:18 12505
Summerland 06:25:18 -15.5 AT Down 7.2 148.9 Really Low 06:10:18 - 06:40:18 12502
Penticton 06:25:18 -15.5 AT Down 7.2 149.0 Really Low 06:10:18 - 06:40:18 12502
Oliver 06:25:18 -15.9 AT Down 7.5 149.0 Really Low 06:10:18 - 06:40:18 12490
Anarchist Mountain Observatory 06:25:19 -16.1 AT Down 7.8 149.2 Really Low 06:10:19 - 06:40:19 12489
Okanogan 06:25:20 -16.6 AT Down 8.2 148.9 Really Low 06:10:20 - 06:40:20 12461
Brewster 06:25:21 -16.8 AT Down 8.4 148.8 Really Low 06:10:21 - 06:40:21 12448
Manson/Chelan 06:25:23 -16.9 AT Down 8.5 148.4 Really Low 06:10:23 - 06:40:23 12433
Wenatchee 06:25:24 -17.3 AT Down 8.8 148.3 Really Low 06:10:24 - 06:40:24 12412
Ellensburg 06:25:25 -17.7 AT Down 9.1 148.1 Really Low 06:10:25 - 06:40:25 12393
Dunrhomin 06:24:48 -27.1 Dark Down 19.9 160.4 Really Low 06:09:48 - 06:39:48 12390
PNWRO 06:25:23 -19.0 Dark Down 10.5 149.3 Really Low 06:10:23 - 06:40:23 12389
Victoria 06:25:29 -15.5 AT Down 6.8 145.8 Really Low 06:10:29 - 06:40:29 12388
Nikitin 06:24:48 -27.3 Dark Down 20.1 160.4 Low 06:09:48 - 06:39:48 12381
CU-SBO 06:24:48 -27.4 Dark Down 20.1 160.3 Low 06:09:48 - 06:39:48 12377
Yakima 06:25:26 -18.0 Dark Down 9.4 148.0 Really Low 06:10:26 - 06:40:26 12377
Toppenish/White Swan 06:25:26 -18.3 Dark Down 9.7 148.1 Really Low 06:10:26 - 06:40:26 12372
The Dalles 06:25:29 -18.8 Dark Down 10.0 147.4 Really Low 06:10:29 - 06:40:29 12324
Maupin 06:25:31 -19.2 Dark Down 10.4 147.5 Really Low 06:10:31 - 06:40:31 12310
Sisters 06:25:33 -19.8 Dark Down 11.0 147.0 Really Low 06:10:33 - 06:40:33 12262
Bend 06:25:33 -20.1 Dark Down 11.3 147.2 Really Low 06:10:33 - 06:40:33 12258
Oregon Observatory 06:25:33 -20.3 Dark Down 11.4 147.0 Really Low 06:10:33 - 06:40:33 12248
Chiloquin 06:25:37 -21.3 Dark Down 12.3 146.6 Really Low 06:10:37 - 06:40:37 12180
Cedarville 06:25:35 -22.8 Dark Down 13.9 147.8 Really Low 06:10:35 - 06:40:35 12170
Klamath Falls 06:25:37 -21.7 Dark Down 12.6 146.6 Really Low 06:10:37 - 06:40:37 12166
Fall River/Burney 06:25:38 -22.9 Dark Down 13.8 146.8 Really Low 06:10:38 - 06:40:38 12119
Gimple 06:25:39 -23.9 Dark Down 14.8 147.1 Really Low 06:10:39 - 06:40:39 12087
Greenville 06:25:38 -23.8 Dark Down 14.7 147.0 Really Low 06:10:38 - 06:40:38 12085
Reno 06:25:37 -24.7 Dark Down 15.7 147.8 Really Low 06:10:37 - 06:40:37 12082
Portola 06:25:38 -24.3 Dark Down 15.2 147.3 Really Low 06:10:38 - 06:40:38 12081
Quincy 06:25:39 -24.0 Dark Down 14.9 147.0 Really Low 06:10:39 - 06:40:39 12075
Yerington 06:25:36 -25.4 Dark Down 16.4 148.3 Really Low 06:10:36 - 06:40:36 12069
Carson City 06:25:37 -25.1 Dark Down 16.0 147.8 Really Low 06:10:37 - 06:40:37 12065
Hawthorne 06:25:34 -26.0 Dark Down 17.0 148.6 Really Low 06:10:34 - 06:40:34 12058
Gardnerville 06:25:37 -25.3 Dark Down 16.2 147.8 Really Low 06:10:37 - 06:40:37 12053
Lee Vining 06:25:38 -26.4 Dark Down 17.3 148.1 Really Low 06:10:38 - 06:40:38 12018
Beatty 06:25:32 -28.1 Dark Down 19.2 149.9 Really Low 06:10:32 - 06:40:32 12014
Bishop 06:25:37 -27.2 Dark Down 18.1 148.6 Really Low 06:10:37 - 06:40:37 12002
Patrick 06:25:25 -30.3 Dark Down 21.6 152.1 Low 06:10:25 - 06:40:25 11995
Laughlin/Bullhead City 06:25:28 -30.3 Dark Down 21.6 151.4 Low 06:10:28 - 06:40:28 11966
George/Scottsdale 06:25:20 -32.4 Dark Down 23.9 153.5 Low 06:10:20 - 06:40:20 11940
Lake Havasu City 06:25:28 -31.0 Dark Down 22.3 151.5 Low 06:10:28 - 06:40:28 11934
Idyllwild 06:25:37 -31.0 Dark Down 22.0 149.4 Low 06:10:37 - 06:40:37 11839
Calipatria 06:25:33 -32.0 Dark Down 23.0 150.2 Low 06:10:33 - 06:40:33 11828
Yuma 06:25:30 -32.6 Dark Down 23.7 150.9 Low 06:10:30 - 06:40:30 11822
Wildwood 06:25:42 -30.1 Dark Down 20.8 147.9 Low 06:10:42 - 06:40:42 11815

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 307251, (2024/06/01 06:24UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 13.09 112
34Ups Sco      17:30:45.8 -37:17:46  2.7 10.18  97
PPM 266967     17:31:44.4 -26:16:11  6.3  1.20  98
PPM 266861     17:26:05.9 -27:36:00  7.9  0.63  99
PPM 266873     17:26:43.9 -27:14:43  9.7  0.30  99
307251         17:27:59.2 -27:08:06 14.9        99
Positions are for J2000

Event circumstances last updated at 2024/02/12 04:25:15 UT

Marc W. Buie, Southwest Research Institute

RECON