RECON: TNO occultation with 469442

Event between (469442) 02GG166 and star GA0600:22634519 with event index number of 1209636

Geocentric closest approach at 2023/05/28 08:26:30 UTC

J2000 position of star is 17:28:19.8 -29:27:55
Equinox of date position of star is 17:29:48.9 -29:28:58
Stellar brightness G=16.3, 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 57% illuminated.
Apparent brightness V=20.2

[RECON map]
Object is 15.9 AU from the Sun and 15.0 AU from the Earth.
Apparent velocity is 19.3 km/sec on the sky relative to the star, or, 6.4 arcsec/hr.
The 1-sigma error in the time of the event is 78 seconds.
The 1-sigma cross-track error in the shadow position is 604 km.
The sky-plane scale is 10843.6 km/arcsec.

The object has an absolute magnitude Hv=8.2
Diameter=136.1 km assuming a 5% albedo -- 7.1 sec chord
Diameter=55.6 km assuming a 30% albedo -- 2.9 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 469442, (2023/05/28 08:27UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:50.8 -26:28:55  0.9 13.35  85
34Ups Sco      17:32:21.5 -37:18:44  2.7  7.85 100
PPM 266892     17:29:07.2 -29:44:33  6.4  0.30  99
PPM 266917     17:30:20.7 -29:36:35  8.9  0.17  99
469442         17:29:49.3 -29:28:58 16.3        99
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 0.0 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 08:26:06 -14.2 AT Up 8.4 183.7 Really Low 08:19:07 - 08:33:06 8331
Kamloops 08:26:56 -17.6 AT Up 9.4 171.1 Really Low 08:19:57 - 08:33:56 8313
Kelowna 08:26:54 -18.4 Dark Up 10.3 171.9 Really Low 08:19:54 - 08:33:53 8300
Peachland 08:26:55 -18.5 Dark Up 10.3 171.6 Really Low 08:19:56 - 08:33:55 8297
Summerland 08:26:54 -18.6 Dark Up 10.5 171.7 Really Low 08:19:55 - 08:33:54 8294
Penticton 08:26:55 -18.7 Dark Up 10.6 171.8 Really Low 08:19:55 - 08:33:54 8293
Oliver 08:26:54 -19.0 Dark Up 10.9 171.8 Really Low 08:19:55 - 08:33:54 8285
Anarchist Mountain Observatory 08:26:54 -19.2 Dark Up 11.1 171.9 Really Low 08:19:55 - 08:33:54 8283
Okanogan 08:26:56 -19.8 Dark Up 11.7 171.7 Really Low 08:19:56 - 08:33:55 8267
Brewster 08:26:56 -20.1 Dark Up 12.0 171.5 Really Low 08:19:57 - 08:33:56 8260
Manson/Chelan 08:26:57 -20.4 Dark Up 12.1 171.2 Really Low 08:19:58 - 08:33:57 8253
Victoria 08:27:09 -19.9 Dark Up 11.1 168.4 Really Low 08:20:10 - 08:34:09 8253
Wenatchee 08:26:59 -20.9 Dark Up 12.6 171.1 Really Low 08:19:59 - 08:33:58 8241
Ellensburg 08:27:00 -21.3 Dark Up 13.0 170.8 Really Low 08:20:00 - 08:33:59 8229
Yakima 08:27:00 -21.7 Dark Up 13.4 170.8 Really Low 08:20:01 - 08:34:00 8219
Toppenish/White Swan 08:27:00 -21.9 Dark Up 13.6 171.0 Really Low 08:20:00 - 08:33:59 8213
PNWRO 08:26:54 -22.1 Dark Up 14.1 172.3 Really Low 08:19:55 - 08:33:54 8209
The Dalles 08:27:04 -22.7 Dark Up 14.3 170.2 Really Low 08:20:04 - 08:34:03 8188
Maupin 08:27:04 -23.1 Dark Up 14.7 170.3 Really Low 08:20:04 - 08:34:03 8176
Sisters 08:27:06 -24.0 Dark Up 15.5 169.8 Really Low 08:20:07 - 08:34:06 8148
Bend 08:27:05 -24.3 Dark Up 15.8 170.1 Really Low 08:20:06 - 08:34:05 8142
Oregon Observatory 08:27:06 -24.4 Dark Up 15.9 169.9 Really Low 08:20:06 - 08:34:05 8136
Chiloquin 08:27:09 -25.8 Dark Up 17.2 169.5 Really Low 08:20:09 - 08:34:08 8090
Klamath Falls 08:27:09 -26.1 Dark Up 17.5 169.6 Really Low 08:20:09 - 08:34:08 8079
Cedarville 08:27:03 -26.7 Dark Up 18.4 171.0 Really Low 08:20:03 - 08:34:02 8062
Fall River/Burney 08:27:08 -27.3 Dark Up 18.7 169.8 Really Low 08:20:09 - 08:34:08 8038
Gimple 08:27:07 -28.1 Dark Up 19.7 170.3 Really Low 08:20:07 - 08:34:06 8006
Greenville 08:27:08 -28.1 Dark Up 19.7 170.2 Really Low 08:20:08 - 08:34:07 8006
Dunrhomin 08:26:00 -25.0 Dark Down 20.1 184.5 Low 08:19:01 - 08:33:00 7999
Quincy 08:27:07 -28.3 Dark Up 19.9 170.2 Really Low 08:20:08 - 08:34:07 7998
Portola 08:27:05 -28.4 Dark Up 20.1 170.6 Low 08:20:05 - 08:34:04 7995
Nikitin 08:26:00 -25.2 Dark Down 20.3 184.5 Low 08:19:01 - 08:33:00 7992
CU-SBO 08:26:00 -25.2 Dark Down 20.4 184.4 Low 08:19:00 - 08:32:59 7990
Reno 08:27:02 -28.6 Dark Up 20.4 171.2 Low 08:20:03 - 08:34:02 7988
Carson City 08:27:03 -29.0 Dark Up 20.8 171.2 Low 08:20:04 - 08:34:03 7973
Yerington 08:27:00 -29.1 Dark Up 21.0 171.7 Low 08:20:01 - 08:34:00 7968
Gardnerville 08:27:03 -29.2 Dark Up 21.0 171.2 Low 08:20:03 - 08:34:02 7964
Hawthorne 08:26:58 -29.5 Dark Up 21.6 172.2 Low 08:19:58 - 08:33:57 7951
Lee Vining 08:27:00 -30.1 Dark Up 22.1 171.7 Low 08:20:01 - 08:34:00 7926
Bishop 08:26:58 -30.6 Dark Up 22.7 172.3 Low 08:19:58 - 08:33:57 7902
Beatty 08:26:51 -30.8 Dark Up 23.4 173.8 Low 08:19:51 - 08:33:50 7885
Patrick 08:26:39 -31.7 Dark Up 25.0 176.5 Low 08:19:39 - 08:33:38 7820
Laughlin/Bullhead City 08:26:42 -32.1 Dark Up 25.2 175.8 Low 08:19:42 - 08:33:41 7808
Lake Havasu City 08:26:41 -32.7 Dark Up 25.9 176.0 Low 08:19:42 - 08:33:41 7775
Wildwood 08:27:01 -33.8 Dark Up 26.0 172.0 Low 08:20:01 - 08:34:00 7748
Idyllwild 08:26:52 -33.9 Dark Up 26.5 173.7 Low 08:19:53 - 08:33:52 7737
George/Scottsdale 08:26:29 -32.9 Dark Up 26.8 178.4 Low 08:19:30 - 08:33:29 7735
Calipatria 08:26:47 -34.3 Dark Up 27.2 174.8 Low 08:19:48 - 08:33:47 7706
Yuma 08:26:42 -34.5 Dark Up 27.7 175.7 Low 08:19:43 - 08:33:42 7685

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, (2023/05/28 08:27UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 13.35  85
34Ups Sco      17:30:45.8 -37:17:46  2.7  7.85 100
PPM 266892     17:27:37.5 -29:43:29  6.4  0.30  99
PPM 266917     17:28:51.1 -29:35:33  8.9  0.17  99
469442         17:28:19.8 -29:27:55 16.3        99
Positions are for J2000

Event circumstances last updated at 2023/04/19 02:35:51 UT

Marc W. Buie, Southwest Research Institute

RECON