RECON: TNO occultation with 02GW32

Event between 02GW32 and star GA0640:09461611 with event index number of 2794175

Geocentric closest approach at 2023/07/16 04:42:41 UTC

J2000 position of star is 16:54:46.5 -24:53:51
Equinox of date position of star is 16:56:12.0 -24:56:01
Stellar brightness G=14.6, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 159 degrees from the moon. Moon is 2% illuminated.
Apparent brightness V=23.1

[RECON map]
Object is 37.0 AU from the Sun and 36.2 AU from the Earth.
Apparent velocity is 18.4 km/sec on the sky relative to the star, or, 2.5 arcsec/hr.
The 1-sigma error in the time of the event is 1191 seconds.
The 1-sigma cross-track error in the shadow position is 2423 km.
The sky-plane scale is 26269.0 km/arcsec.

The object has an absolute magnitude Hv=7.3
Diameter=212.8 km assuming a 5% albedo -- 11.6 sec chord
Diameter=86.9 km assuming a 30% albedo -- 4.7 sec chord
Dynamical classification is 5:4E
 
 
 
 
 
 

Star training set for 02GW32, (2023/07/16 04:43UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:51.3 -26:28:56  0.9  5.92 154
23Tau Sco      16:37:21.1 -28:15:46  2.8  5.37 156
26 Oph         17:01:36.2 -25:01:22  5.8  1.22 161
PPM 266130     16:56:23.3 -24:32:41  8.2  0.39 159
PPM 266121     16:56:06.5 -25:15:58  9.9  0.33 159
02GW32         16:56:12.9 -24:56:02 14.6       160
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 0.8 sigma about the mid-time.
The median site spacing is 13.9 km RECON observability=0.3 and success probability=0.1%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Sleaford 04:43:22 -9.9 NT Down 12.9 184.7 Really Low 04:28:22 - 04:58:22 9008
Kamloops 04:44:14 -5.2 CT Down 14.0 171.4 Really Low 04:29:14 - 04:59:14 8780
Kelowna 04:44:11 -6.2 NT Down 14.9 172.2 Really Low 04:29:11 - 04:59:11 8770
Peachland 04:44:13 -6.1 NT Down 15.0 171.9 Really Low 04:29:13 - 04:59:13 8762
Summerland 04:44:12 -6.2 NT Down 15.1 172.0 Really Low 04:29:12 - 04:59:12 8759
Penticton 04:44:12 -6.3 NT Down 15.2 172.1 Really Low 04:29:12 - 04:59:12 8758
Oliver 04:44:12 -6.6 NT Down 15.5 172.1 Really Low 04:29:12 - 04:59:12 8747
Anarchist Mountain Observatory 04:44:11 -6.8 NT Down 15.7 172.2 Really Low 04:29:11 - 04:59:11 8745
Okanogan 04:44:12 -7.1 NT Down 16.3 172.0 Really Low 04:29:12 - 04:59:12 8719
Brewster 04:44:12 -7.2 NT Down 16.6 171.8 Really Low 04:29:12 - 04:59:12 8706
Manson/Chelan 04:44:14 -7.2 NT Down 16.8 171.5 Really Low 04:29:14 - 04:59:14 8693
Wenatchee 04:44:15 -7.5 NT Down 17.2 171.3 Really Low 04:29:15 - 04:59:15 8673
Victoria 04:44:26 -5.2 CT Down 15.8 168.5 Really Low 04:29:26 - 04:59:26 8655
Ellensburg 04:44:16 -7.6 NT Down 17.6 171.1 Really Low 04:29:16 - 04:59:16 8654
PNWRO 04:44:10 -9.1 NT Down 18.7 172.6 Really Low 04:29:10 - 04:59:10 8646
Yakima 04:44:17 -7.9 NT Down 18.0 171.0 Really Low 04:29:17 - 04:59:17 8638
Toppenish/White Swan 04:44:16 -8.1 NT Down 18.2 171.2 Really Low 04:29:16 - 04:59:16 8633
Dunrhomin 04:43:11 -19.9 Dark Down 24.6 185.7 Low 04:28:11 - 04:58:11 8611
Nikitin 04:43:11 -20.0 Dark Down 24.8 185.7 Low 04:28:11 - 04:58:11 8602
CU-SBO 04:43:11 -20.0 Dark Down 24.9 185.6 Low 04:28:11 - 04:58:11 8599
The Dalles 04:44:20 -8.3 NT Down 18.9 170.4 Really Low 04:29:20 - 04:59:20 8588
Maupin 04:44:19 -8.6 NT Down 19.3 170.5 Really Low 04:29:19 - 04:59:19 8574
Sisters 04:44:21 -8.9 NT Down 20.2 169.9 Low 04:29:21 - 04:59:21 8529
Bend 04:44:21 -9.2 NT Down 20.4 170.2 Low 04:29:21 - 04:59:21 8524
Oregon Observatory 04:44:21 -9.3 NT Down 20.6 170.0 Low 04:29:21 - 04:59:21 8514
Chiloquin 04:44:23 -9.9 NT Down 21.8 169.6 Low 04:29:23 - 04:59:23 8448
Cedarville 04:44:17 -11.6 NT Down 23.0 171.1 Low 04:29:17 - 04:59:17 8435
Klamath Falls 04:44:23 -10.2 NT Down 22.2 169.6 Low 04:29:23 - 04:59:23 8434
Fall River/Burney 04:44:22 -11.2 NT Down 23.4 169.9 Low 04:29:22 - 04:59:22 8387
Gimple 04:44:20 -12.1 AT Down 24.3 170.3 Low 04:29:20 - 04:59:20 8355
Greenville 04:44:21 -12.1 AT Down 24.3 170.3 Low 04:29:21 - 04:59:21 8353
Portola 04:44:18 -12.6 AT Down 24.7 170.7 Low 04:29:18 - 04:59:18 8347
Reno 04:44:15 -13.1 AT Down 25.1 171.3 Low 04:29:15 - 04:59:15 8347
Quincy 04:44:21 -12.2 AT Down 24.5 170.2 Low 04:29:21 - 04:59:21 8343
Yerington 04:44:13 -13.8 AT Down 25.7 171.9 Low 04:29:13 - 04:59:13 8333
Carson City 04:44:16 -13.4 AT Down 25.4 171.3 Low 04:29:16 - 04:59:16 8330
Hawthorne 04:44:10 -14.5 AT Down 26.2 172.4 Low 04:29:10 - 04:59:10 8320
Gardnerville 04:44:15 -13.5 AT Down 25.7 171.3 Low 04:29:15 - 04:59:15 8318
Lee Vining 04:44:12 -14.6 AT Down 26.7 171.9 Low 04:29:12 - 04:59:12 8281
Beatty 04:44:01 -16.6 AT Down 28.0 174.2 Low 04:29:01 - 04:59:01 8271
Bishop 04:44:10 -15.4 AT Down 27.4 172.6 Low 04:29:10 - 04:59:10 8264
Patrick 04:43:48 -19.3 Dark Down 29.6 177.0 Low 04:28:48 - 04:58:48 8244
Laughlin/Bullhead City 04:43:51 -19.1 Dark Down 29.8 176.3 Low 04:28:51 - 04:58:51 8217
Lake Havasu City 04:43:49 -19.7 Dark Down 30.5 176.5 Up 04:28:49 - 04:58:49 8184
George/Scottsdale 04:43:37 -21.6 Dark Down 31.4 179.1 Up 04:28:37 - 04:58:37 8183
Idyllwild 04:44:01 -18.9 Dark Down 31.1 174.0 Up 04:29:01 - 04:59:01 8097
Calipatria 04:43:56 -20.0 Dark Down 31.8 175.2 Up 04:28:56 - 04:58:56 8083
Wildwood 04:44:10 -17.5 AT Down 30.6 172.1 Up 04:29:10 - 04:59:10 8078
Yuma 04:43:51 -20.8 Dark Down 32.3 176.1 Up 04:28:51 - 04:58:51 8074

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 02GW32, (2023/07/16 04:43UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9  5.92 154
23Tau Sco      16:35:52.9 -28:12:58  2.8  5.37 156
26 Oph         17:00:09.6 -24:59:22  5.8  1.22 161
PPM 266130     16:54:57.2 -24:30:30  8.2  0.39 159
PPM 266121     16:54:39.8 -25:13:47  9.9  0.33 159
02GW32         16:54:46.5 -24:53:51 14.6       159
Positions are for J2000

Event circumstances last updated at 2023/04/18 02:29:53 UT

Marc W. Buie, Southwest Research Institute

RECON