RECON: TNO occultation with 469442

Event between (469442) 02GG166 and star GA0600:21902099 with event index number of 1209679

Geocentric closest approach at 2023/06/08 07:41:04 UTC

J2000 position of star is 17:26:06.4 -29:28:22
Equinox of date position of star is 17:27:35.5 -29:29:29
Stellar brightness G=16.3, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 51 degrees from the moon. Moon is 77% illuminated.
Apparent brightness V=20.1

[RECON map]
Object is 15.9 AU from the Sun and 14.9 AU from the Earth.
Apparent velocity is 20.3 km/sec on the sky relative to the star, or, 6.8 arcsec/hr.
The 1-sigma error in the time of the event is 72 seconds.
The 1-sigma cross-track error in the shadow position is 592 km.
The sky-plane scale is 10804.9 km/arcsec.

The object has an absolute magnitude Hv=8.2
Diameter=136.1 km assuming a 5% albedo -- 6.7 sec chord
Diameter=55.6 km assuming a 30% albedo -- 2.7 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 469442, (2023/06/08 07:41UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:50.9 -26:28:55  0.9 12.88  64
34Ups Sco      17:32:21.6 -37:18:44  2.7  7.88  50
PPM 266892     17:29:07.3 -29:44:33  6.4  0.42  51
PPM 266853     17:27:10.3 -29:34:14  8.9  0.12  51
469442         17:27:36.0 -29:29:29 16.3        51
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 14.4 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 07:40:51 -14.6 AT Up 8.4 183.7 Really Low 07:34:21 - 07:47:21 4509
Kamloops 07:41:39 -16.4 AT Down 9.4 171.2 Really Low 07:35:09 - 07:48:09 4455
Kelowna 07:41:37 -17.2 AT Down 10.3 171.9 Really Low 07:35:07 - 07:48:07 4444
Peachland 07:41:38 -17.3 AT Down 10.3 171.7 Really Low 07:35:08 - 07:48:08 4440
Summerland 07:41:38 -17.5 AT Down 10.5 171.7 Really Low 07:35:08 - 07:48:08 4437
Penticton 07:41:38 -17.6 AT Down 10.6 171.8 Really Low 07:35:08 - 07:48:08 4436
Oliver 07:41:37 -17.9 AT Down 10.9 171.8 Really Low 07:35:07 - 07:48:07 4428
Anarchist Mountain Observatory 07:41:37 -18.1 Dark Down 11.1 172.0 Really Low 07:35:07 - 07:48:07 4426
Okanogan 07:41:39 -18.7 Dark Down 11.7 171.8 Really Low 07:35:09 - 07:48:09 4409
Brewster 07:41:40 -19.0 Dark Down 12.0 171.6 Really Low 07:35:10 - 07:48:10 4401
Manson/Chelan 07:41:41 -19.2 Dark Down 12.1 171.3 Really Low 07:35:11 - 07:48:11 4394
Victoria 07:41:52 -18.3 Dark Down 11.1 168.5 Really Low 07:35:22 - 07:48:22 4385
Wenatchee 07:41:42 -19.6 Dark Down 12.6 171.1 Really Low 07:35:12 - 07:48:12 4381
Ellensburg 07:41:43 -20.0 Dark Down 13.0 170.9 Really Low 07:35:13 - 07:48:13 4369
Yakima 07:41:43 -20.4 Dark Down 13.4 170.9 Really Low 07:35:13 - 07:48:13 4357
Toppenish/White Swan 07:41:43 -20.7 Dark Down 13.6 171.0 Really Low 07:35:13 - 07:48:13 4352
PNWRO 07:41:37 -21.1 Dark Up 14.1 172.3 Really Low 07:35:07 - 07:48:07 4352
The Dalles 07:41:46 -21.4 Dark Down 14.3 170.3 Really Low 07:35:16 - 07:48:16 4324
Maupin 07:41:46 -21.8 Dark Down 14.7 170.4 Really Low 07:35:16 - 07:48:16 4313
Sisters 07:41:49 -22.7 Dark Down 15.5 169.9 Really Low 07:35:19 - 07:48:19 4283
Bend 07:41:48 -22.9 Dark Up 15.8 170.1 Really Low 07:35:18 - 07:48:18 4277
Oregon Observatory 07:41:48 -23.1 Dark Up 15.9 170.0 Really Low 07:35:18 - 07:48:18 4271
Chiloquin 07:41:51 -24.4 Dark Up 17.2 169.5 Really Low 07:35:21 - 07:48:21 4223
Klamath Falls 07:41:51 -24.7 Dark Up 17.5 169.6 Really Low 07:35:21 - 07:48:21 4211
Cedarville 07:41:45 -25.5 Dark Up 18.4 171.0 Really Low 07:35:15 - 07:48:15 4199
Dunrhomin 07:40:45 -26.2 Dark Up 20.1 184.6 Low 07:34:15 - 07:47:15 4182
Nikitin 07:40:45 -26.4 Dark Up 20.3 184.6 Low 07:34:15 - 07:47:15 4175
CU-SBO 07:40:45 -26.5 Dark Up 20.4 184.5 Low 07:34:15 - 07:47:15 4173
Fall River/Burney 07:41:51 -25.9 Dark Up 18.7 169.9 Really Low 07:35:21 - 07:48:21 4171
Gimple 07:41:49 -26.8 Dark Up 19.7 170.3 Really Low 07:35:19 - 07:48:19 4140
Greenville 07:41:49 -26.8 Dark Up 19.7 170.2 Really Low 07:35:19 - 07:48:19 4140
Quincy 07:41:49 -27.0 Dark Up 19.9 170.2 Really Low 07:35:19 - 07:48:19 4132
Portola 07:41:47 -27.2 Dark Up 20.1 170.6 Low 07:35:17 - 07:48:17 4131
Reno 07:41:45 -27.5 Dark Up 20.4 171.2 Low 07:35:15 - 07:48:15 4125
Carson City 07:41:45 -27.9 Dark Up 20.8 171.2 Low 07:35:15 - 07:48:15 4111
Yerington 07:41:42 -28.1 Dark Up 21.0 171.8 Low 07:35:12 - 07:48:12 4107
Gardnerville 07:41:45 -28.1 Dark Up 21.0 171.2 Low 07:35:15 - 07:48:15 4101
Hawthorne 07:41:41 -28.6 Dark Up 21.6 172.2 Low 07:35:11 - 07:48:11 4091
Lee Vining 07:41:43 -29.1 Dark Up 22.1 171.8 Low 07:35:13 - 07:48:13 4065
Bishop 07:41:40 -29.8 Dark Up 22.7 172.4 Low 07:35:10 - 07:48:10 4043
Beatty 07:41:34 -30.3 Dark Up 23.4 173.9 Low 07:35:04 - 07:48:04 4031
Patrick 07:41:22 -31.7 Dark Up 25.0 176.5 Low 07:34:52 - 07:47:52 3975
Laughlin/Bullhead City 07:41:24 -32.0 Dark Up 25.2 175.9 Low 07:34:54 - 07:47:54 3960
Lake Havasu City 07:41:24 -32.7 Dark Up 25.9 176.1 Low 07:34:54 - 07:47:54 3929
George/Scottsdale 07:41:13 -33.3 Dark Up 26.8 178.4 Low 07:34:43 - 07:47:43 3897
Wildwood 07:41:43 -33.0 Dark Up 26.0 172.0 Low 07:35:13 - 07:48:13 3888
Idyllwild 07:41:34 -33.4 Dark Up 26.5 173.8 Low 07:35:04 - 07:48:04 3882
Calipatria 07:41:29 -34.0 Dark Up 27.2 174.9 Low 07:34:59 - 07:47:59 3855
Yuma 07:41:25 -34.5 Dark Up 27.7 175.7 Low 07:34:55 - 07:47:55 3837

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 469442, (2023/06/08 07:41UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 12.88  64
34Ups Sco      17:30:45.8 -37:17:46  2.7  7.88  50
PPM 266892     17:27:37.5 -29:43:29  6.4  0.42  51
PPM 266853     17:25:40.6 -29:33:05  8.9  0.12  51
469442         17:26:06.4 -29:28:22 16.3        51
Positions are for J2000

Event circumstances last updated at 2023/04/19 02:37:42 UT

Marc W. Buie, Southwest Research Institute

RECON