RECON: TNO occultation with 11HJ103

Event between 11HJ103 and star GA0700:33700931 with event index number of 2118337

Geocentric closest approach at 2023/06/17 10:23:41 UTC

J2000 position of star is 19:48:41.7 -19:57:58
Equinox of date position of star is 19:50:03.4 -19:54:24
Stellar brightness G=14.2, use SENSEUP=64 with the MallinCam and and exposure time of 1 seconds with the QHY174 camera.
Star is 142 degrees from the moon. Moon is 1% illuminated.
Apparent brightness V=24.1

[RECON map]
Object is 39.7 AU from the Sun and 38.8 AU from the Earth.
Apparent velocity is 20.3 km/sec on the sky relative to the star, or, 2.6 arcsec/hr.
The 1-sigma error in the time of the event is 986 seconds.
The 1-sigma cross-track error in the shadow position is 3509 km.
The sky-plane scale is 28165.2 km/arcsec.

The object has an absolute magnitude Hv=8.1
Diameter=146.6 km assuming a 5% albedo -- 7.2 sec chord
Diameter=59.8 km assuming a 30% albedo -- 2.9 sec chord
Dynamical classification is CLASSICAL
 
 
 
 
 
 

Star training set for 11HJ103, (2023/06/17 10:24UT)
Object            RA         Dec     mag  sep  mel
Fomalhaut      22:58:56.5 -29:29:50  1.2 43.66 104
Nunki          18:56:43.1 -26:15:56  2.0 13.81 155
57 Sgr         19:53:33.7 -18:59:01  5.8  1.24 140
PPM 270285     19:49:22.8 -20:53:53  6.8  1.00 142
PPM 270316     19:50:30.0 -19:56:38  9.5  0.11 141
11HJ103        19:50:04.0 -19:54:22 14.2       141
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 0.9 sigma about the mid-time.
The median site spacing is 20.7 km RECON observability=0.6 and success probability=5.6%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kamloops 10:22:34 -9.7 NT Down 19.3 183.5 Really Low 10:07:34 - 10:37:34 3739
Victoria 10:22:45 -12.6 AT Down 21.5 180.5 Low 10:07:45 - 10:37:45 3699
Peachland 10:22:32 -10.3 NT Down 20.2 184.1 Low 10:07:32 - 10:37:32 3694
Kelowna 10:22:31 -10.1 NT Down 20.1 184.4 Low 10:07:31 - 10:37:31 3694
Summerland 10:22:32 -10.4 NT Down 20.3 184.2 Low 10:07:32 - 10:37:32 3687
Penticton 10:22:32 -10.4 NT Down 20.4 184.3 Low 10:07:32 - 10:37:32 3683
Oliver 10:22:31 -10.7 NT Down 20.7 184.3 Low 10:07:31 - 10:37:31 3669
Anarchist Mountain Observatory 10:22:31 -10.8 NT Down 20.9 184.5 Low 10:07:31 - 10:37:31 3659
Okanogan 10:22:31 -11.4 NT Down 21.6 184.3 Low 10:07:31 - 10:37:31 3636
Brewster 10:22:32 -11.7 NT Down 21.8 184.1 Low 10:07:32 - 10:37:32 3627
Manson/Chelan 10:22:33 -12.0 AT Down 22.1 183.8 Low 10:07:33 - 10:37:33 3624
Wenatchee 10:22:35 -12.5 AT Down 22.5 183.6 Low 10:07:35 - 10:37:35 3607
Ellensburg 10:22:36 -12.9 AT Down 23.0 183.4 Low 10:07:36 - 10:37:36 3593
Yakima 10:22:35 -13.3 AT Down 23.4 183.4 Low 10:07:35 - 10:37:35 3575
Toppenish/White Swan 10:22:34 -13.4 AT Down 23.6 183.6 Low 10:07:34 - 10:37:34 3562
Sleaford 10:21:49 -3.1 CT Up 16.3 197.4 Really Low 10:06:49 - 10:36:49 3547
The Dalles 10:22:38 -14.3 AT Down 24.4 182.8 Low 10:07:38 - 10:37:38 3540
PNWRO 10:22:30 -13.1 AT Down 23.9 185.1 Low 10:07:30 - 10:37:30 3521
Maupin 10:22:38 -14.6 AT Down 24.8 182.9 Low 10:07:38 - 10:37:38 3519
Sisters 10:22:39 -15.6 AT Down 25.7 182.4 Low 10:07:39 - 10:37:39 3486
Bend 10:22:39 -15.7 AT Down 25.9 182.7 Low 10:07:39 - 10:37:39 3470
Oregon Observatory 10:22:39 -15.9 AT Down 26.1 182.6 Low 10:07:39 - 10:37:39 3464
Chiloquin 10:22:42 -17.1 AT Down 27.4 182.2 Low 10:07:42 - 10:37:42 3405
Klamath Falls 10:22:41 -17.4 AT Down 27.8 182.3 Low 10:07:41 - 10:37:41 3386
Cedarville 10:22:36 -17.3 AT Down 28.4 184.0 Low 10:07:36 - 10:37:36 3323
Fall River/Burney 10:22:40 -18.2 Dark Down 28.9 182.7 Low 10:07:40 - 10:37:40 3318
Greenville 10:22:39 -18.8 Dark Down 29.8 183.2 Low 10:07:39 - 10:37:39 3261
Gimple 10:22:39 -18.8 Dark Down 29.8 183.3 Low 10:07:39 - 10:37:39 3259
Quincy 10:22:39 -19.0 Dark Down 30.0 183.2 Up 10:07:39 - 10:37:39 3249
Portola 10:22:37 -18.9 Dark Down 30.1 183.7 Up 10:07:37 - 10:37:37 3234
Reno 10:22:34 -18.8 Dark Down 30.4 184.4 Up 10:07:34 - 10:37:34 3208
Carson City 10:22:34 -19.1 Dark Down 30.7 184.5 Up 10:07:34 - 10:37:34 3187
Gardnerville 10:22:34 -19.3 Dark Down 31.0 184.5 Up 10:07:34 - 10:37:34 3172
Yerington 10:22:31 -19.0 Dark Down 30.9 185.2 Up 10:07:31 - 10:37:31 3164
Hawthorne 10:22:30 -19.1 Dark Down 31.3 185.8 Up 10:07:30 - 10:37:30 3127
Lee Vining 10:22:31 -19.8 Dark Down 31.9 185.3 Up 10:07:31 - 10:37:31 3104
Bishop 10:22:29 -20.0 Dark Down 32.4 186.1 Up 10:07:29 - 10:37:29 3054
Beatty 10:22:23 -19.6 Dark Down 32.7 187.9 Up 10:07:23 - 10:37:23 2993
Dunrhomin 10:21:37 -11.2 NT Down 27.4 199.6 Low 10:06:37 - 10:36:37 2939
Nikitin 10:21:37 -11.3 NT Down 27.5 199.6 Low 10:06:37 - 10:36:37 2928
CU-SBO 10:21:37 -11.4 NT Down 27.6 199.6 Low 10:06:37 - 10:36:37 2926
Wildwood 10:22:31 -22.7 Dark Down 35.7 186.1 Up 10:07:31 - 10:37:31 2853
Patrick 10:22:10 -19.3 Dark Down 33.8 191.2 Up 10:07:10 - 10:37:10 2839
Laughlin/Bullhead City 10:22:14 -19.9 Dark Down 34.2 190.5 Up 10:07:14 - 10:37:14 2838
Idyllwild 10:22:23 -22.1 Dark Down 35.9 188.3 Up 10:07:23 - 10:37:23 2791
Lake Havasu City 10:22:13 -20.2 Dark Down 34.8 190.9 Up 10:07:13 - 10:37:13 2789
Calipatria 10:22:18 -21.9 Dark Down 36.3 189.7 Up 10:07:18 - 10:37:18 2724
George/Scottsdale 10:22:02 -19.5 Dark Down 35.1 193.7 Up 10:07:02 - 10:37:02 2682
Yuma 10:22:14 -21.8 Dark Down 36.6 190.8 Up 10:07:14 - 10:37:14 2675

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 11HJ103, (2023/06/17 10:24UT)
Object            RA         Dec     mag  sep  mel
Fomalhaut      22:57:39.6 -29:37:24  1.2 43.66 104
Nunki          18:55:15.9 -26:17:49  2.0 13.81 155
57 Sgr         19:52:12.0 -19:02:43  5.8  1.24 140
PPM 270285     19:48:00.0 -20:57:28  6.8  1.00 142
PPM 270316     19:49:07.8 -20:00:15  9.5  0.11 141
11HJ103        19:48:41.7 -19:57:58 14.2       142
Positions are for J2000

Event circumstances last updated at 2023/04/18 02:27:38 UT

Marc W. Buie, Southwest Research Institute

RECON