RECON: TNO occultation with 02GB32

Event between 02GB32 and star GA0820:04808975 with event index number of 1181016

Geocentric closest approach at 2023/04/23 06:32:41 UTC

J2000 position of star is 15:40:33.4 -06:58:45
Equinox of date position of star is 15:41:48.2 -07:03:10
Stellar brightness G=16.2, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 158 degrees from the moon. Moon is 11% illuminated.
Apparent brightness V=23.4

[RECON map]
Object is 36.4 AU from the Sun and 35.5 AU from the Earth.
Apparent velocity is 21.1 km/sec on the sky relative to the star, or, 2.9 arcsec/hr.
The 1-sigma error in the time of the event is 661 seconds.
The 1-sigma cross-track error in the shadow position is 5879 km.
The sky-plane scale is 25730.9 km/arcsec.

The object has an absolute magnitude Hv=7.8
Diameter=168.3 km assuming a 5% albedo -- 8.0 sec chord
Diameter=68.7 km assuming a 30% albedo -- 3.3 sec chord
Dynamical classification is SCATNEAR
 
 
 
 
 
 

Star training set for 02GB32, (2023/04/23 06:33UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:50.4 -26:28:54  0.9 22.66 178
27Bet Lib      15:18:15.9 -09:28:03  2.6  6.30 156
PPM 198946     15:47:59.9 -06:11:29  6.5  1.76 158
PPM 198869     15:43:00.0 -06:31:04  7.5  0.61 157
PPM 198866     15:42:38.1 -06:51:00  9.5  0.29 157
02GB32         15:41:48.2 -07:03:10 16.2       158
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 21.3 km RECON observability=1.0 and success probability=8.3%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Sleaford 06:35:47 -25.2 Dark Down 25.3 145.5 Low 06:20:47 - 06:50:47 4820
Kamloops 06:36:22 -24.3 Dark Up 20.4 131.1 Low 06:21:22 - 06:51:22 4346
Kelowna 06:36:21 -25.3 Dark Up 21.3 131.7 Low 06:21:21 - 06:51:21 4302
Peachland 06:36:22 -25.3 Dark Up 21.3 131.4 Low 06:21:22 - 06:51:22 4285
Summerland 06:36:22 -25.4 Dark Up 21.4 131.5 Low 06:21:22 - 06:51:22 4275
Penticton 06:36:22 -25.5 Dark Up 21.5 131.5 Low 06:21:22 - 06:51:22 4273
Oliver 06:36:22 -25.9 Dark Up 21.7 131.4 Low 06:21:22 - 06:51:22 4244
Anarchist Mountain Observatory 06:36:22 -26.1 Dark Up 22.0 131.6 Low 06:21:22 - 06:51:22 4235
Okanogan 06:36:23 -26.6 Dark Up 22.3 131.2 Low 06:21:23 - 06:51:23 4175
Brewster 06:36:24 -26.8 Dark Up 22.3 130.9 Low 06:21:24 - 06:51:24 4147
Manson/Chelan 06:36:25 -26.9 Dark Up 22.3 130.5 Low 06:21:25 - 06:51:25 4120
Victoria 06:36:31 -25.4 Dark Up 20.2 127.8 Low 06:21:31 - 06:51:31 4092
Wenatchee 06:36:26 -27.3 Dark Down 22.5 130.2 Low 06:21:26 - 06:51:26 4076
Ellensburg 06:36:27 -27.6 Dark Down 22.7 129.9 Low 06:21:27 - 06:51:27 4035
Yakima 06:36:28 -28.0 Dark Down 22.9 129.7 Low 06:21:28 - 06:51:28 4000
PNWRO 06:36:25 -29.0 Dark Down 24.2 131.1 Low 06:21:25 - 06:51:25 3995
Toppenish/White Swan 06:36:27 -28.2 Dark Down 23.2 129.8 Low 06:21:27 - 06:51:27 3986
Dunrhomin 06:35:53 -37.0 Dark Down 35.1 142.3 Up 06:20:53 - 06:50:53 3916
Nikitin 06:35:52 -37.2 Dark Down 35.3 142.2 Up 06:20:52 - 06:50:52 3899
The Dalles 06:36:30 -28.7 Dark Down 23.2 128.8 Low 06:21:30 - 06:51:30 3897
CU-SBO 06:35:52 -37.2 Dark Down 35.3 142.0 Up 06:20:52 - 06:50:52 3891
Maupin 06:36:30 -29.1 Dark Down 23.5 128.8 Low 06:21:30 - 06:51:30 3864
Sisters 06:36:33 -29.8 Dark Down 23.8 128.1 Low 06:21:33 - 06:51:33 3774
Bend 06:36:33 -30.1 Dark Down 24.1 128.2 Low 06:21:33 - 06:51:33 3760
Oregon Observatory 06:36:33 -30.2 Dark Down 24.2 128.0 Low 06:21:33 - 06:51:33 3741
Chiloquin 06:36:36 -31.3 Dark Down 24.7 127.2 Low 06:21:36 - 06:51:36 3611
Klamath Falls 06:36:36 -31.6 Dark Down 25.0 127.1 Low 06:21:36 - 06:51:36 3583
Cedarville 06:36:32 -32.7 Dark Down 26.3 128.3 Low 06:21:32 - 06:51:32 3566
Fall River/Burney 06:36:36 -32.8 Dark Down 25.9 127.0 Low 06:21:36 - 06:51:36 3486
Gimple 06:36:36 -33.8 Dark Down 26.8 127.1 Low 06:21:36 - 06:51:36 3419
Greenville 06:36:37 -33.8 Dark Down 26.7 127.1 Low 06:21:37 - 06:51:37 3416
Portola 06:36:35 -34.2 Dark Down 27.2 127.4 Low 06:21:35 - 06:51:35 3401
Quincy 06:36:36 -34.0 Dark Down 26.9 127.0 Low 06:21:36 - 06:51:36 3398
Reno 06:36:33 -34.7 Dark Down 27.8 127.8 Low 06:21:33 - 06:51:33 3395
Yerington 06:36:32 -35.4 Dark Down 28.5 128.2 Low 06:21:32 - 06:51:32 3364
Carson City 06:36:33 -35.0 Dark Down 28.0 127.7 Low 06:21:33 - 06:51:33 3363
Gardnerville 06:36:34 -35.2 Dark Down 28.2 127.6 Low 06:21:34 - 06:51:34 3342
Hawthorne 06:36:31 -36.0 Dark Down 29.1 128.4 Low 06:21:31 - 06:51:31 3337
Lee Vining 06:36:33 -36.3 Dark Down 29.2 127.7 Low 06:21:33 - 06:51:33 3270
Beatty 06:36:27 -38.0 Dark Down 31.3 129.4 Up 06:21:27 - 06:51:27 3245
Bishop 06:36:31 -37.1 Dark Down 30.0 128.1 Low 06:21:31 - 06:51:31 3237
Patrick 06:36:20 -40.2 Dark Down 34.0 131.3 Up 06:21:20 - 06:51:20 3200
Laughlin/Bullhead City 06:36:21 -40.3 Dark Down 33.7 130.5 Up 06:21:21 - 06:51:21 3154
George/Scottsdale 06:36:14 -42.3 Dark Down 36.4 132.3 Up 06:21:14 - 06:51:14 3110
Lake Havasu City 06:36:21 -41.0 Dark Down 34.3 130.4 Up 06:21:21 - 06:51:21 3099
Idyllwild 06:36:28 -41.0 Dark Down 33.3 127.8 Up 06:21:28 - 06:51:28 2949
Calipatria 06:36:25 -41.9 Dark Down 34.4 128.6 Up 06:21:25 - 06:51:25 2930
Wildwood 06:36:33 -40.0 Dark Down 31.8 126.4 Up 06:21:33 - 06:51:33 2921
Yuma 06:36:22 -42.6 Dark Down 35.3 129.1 Up 06:21:22 - 06:51:22 2919

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 02GB32, (2023/04/23 06:33UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 22.66 178
27Bet Lib      15:17:00.3 -09:22:59  2.6  6.30 156
PPM 198946     15:46:45.4 -06:07:13  6.5  1.76 158
PPM 198869     15:41:45.4 -06:26:40  7.5  0.61 157
PPM 198866     15:41:23.3 -06:46:35  9.5  0.29 157
02GB32         15:40:33.4 -06:58:45 16.2       158
Positions are for J2000

Event circumstances last updated at 2023/04/18 02:24:22 UT

Marc W. Buie, Southwest Research Institute

RECON