RECON: TNO occultation with 03LD9

Event between 03LD9 and star GA0700:26065442 with event index number of 1663727

Geocentric closest approach at 2024/07/07 07:55:33 UTC

J2000 position of star is 18:32:44.2 -18:34:03
Equinox of date position of star is 18:34:08.1 -18:32:53
Stellar brightness G=15.5, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 154 degrees from the moon. Moon is 2% illuminated.
Apparent brightness V=22.9

[RECON map]
Object is 43.4 AU from the Sun and 42.4 AU from the Earth.
Apparent velocity is 24.4 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 839 seconds.
The 1-sigma cross-track error in the shadow position is 3686 km.
The sky-plane scale is 30722.6 km/arcsec.

The object has an absolute magnitude Hv=6.6
Diameter=295.1 km assuming a 5% albedo -- 12.1 sec chord
Diameter=120.5 km assuming a 30% albedo -- 4.9 sec chord
Dynamical classification is SCATNEAR
 
 
 
 
 
 

Star training set for 03LD9, (2024/07/07 07:56UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:54.9 -26:29:03  0.9 29.47 128
Nunki          18:56:47.0 -26:15:50  2.0  9.32 160
PPM 234652     18:32:52.5 -18:23:01  5.0  0.35 154
PPM 234693     18:34:36.2 -18:20:54  7.2  0.22 154
PPM 234680     18:33:53.5 -18:20:12  9.4  0.22 154
03LD9          18:34:10.4 -18:32:51 15.5       154
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 1.1 sigma about the mid-time.
The median site spacing is 17.0 km RECON observability=1.0 and success probability=8.8%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kamloops 07:55:03 -16.8 AT Down 20.6 186.1 Low 07:40:03 - 08:10:03 383
Kelowna 07:55:00 -17.6 AT Down 21.3 187.0 Low 07:40:00 - 08:10:00 344
Peachland 07:55:01 -17.7 AT Down 21.4 186.7 Low 07:40:01 - 08:10:01 342
Summerland 07:55:01 -17.9 AT Down 21.6 186.8 Low 07:40:01 - 08:10:01 335
Penticton 07:55:00 -17.9 AT Down 21.6 186.9 Low 07:40:00 - 08:10:00 331
Sleaford 07:54:25 -14.7 AT Down 17.2 200.1 Really Low 07:39:25 - 08:09:25 317
Oliver 07:55:00 -18.3 Dark Down 22.0 186.9 Low 07:40:00 - 08:10:00 316
Victoria 07:55:12 -18.8 Dark Down 22.9 183.1 Low 07:40:12 - 08:10:12 310
Anarchist Mountain Observatory 07:55:00 -18.5 Dark Down 22.1 187.1 Low 07:40:00 - 08:10:00 308
Okanogan 07:55:00 -19.1 Dark Down 22.8 187.0 Low 07:40:00 - 08:10:00 281
Brewster 07:55:01 -19.4 Dark Down 23.1 186.8 Low 07:40:01 - 08:10:01 270
Manson/Chelan 07:55:02 -19.6 Dark Down 23.3 186.4 Low 07:40:02 - 08:10:02 263
Wenatchee 07:55:02 -20.0 Dark Down 23.8 186.2 Low 07:40:02 - 08:10:02 243
Ellensburg 07:55:03 -20.4 Dark Down 24.2 186.0 Low 07:40:03 - 08:10:03 225
Yakima 07:55:03 -20.8 Dark Down 24.6 186.0 Low 07:40:03 - 08:10:03 206
Toppenish/White Swan 07:55:02 -21.1 Dark Down 24.8 186.2 Low 07:40:02 - 08:10:02 195
PNWRO 07:54:57 -21.5 Dark Down 25.1 187.8 Low 07:39:57 - 08:09:57 167
The Dalles 07:55:05 -21.8 Dark Down 25.7 185.4 Low 07:40:05 - 08:10:05 162
Maupin 07:55:04 -22.2 Dark Down 26.1 185.6 Low 07:40:04 - 08:10:04 141
Sisters 07:55:05 -23.1 Dark Down 27.0 185.1 Low 07:40:05 - 08:10:05 101
Bend 07:55:05 -23.3 Dark Down 27.2 185.4 Low 07:40:05 - 08:10:05 87
Oregon Observatory 07:55:05 -23.5 Dark Down 27.4 185.3 Low 07:40:05 - 08:10:05 79
Chiloquin 07:55:06 -24.8 Dark Down 28.7 184.9 Low 07:40:06 - 08:10:06 12
Klamath Falls 07:55:06 -25.1 Dark Down 29.1 185.0 Low 07:40:06 - 08:10:06 -7
Cedarville 07:55:00 -25.9 Dark Down 29.6 186.7 Low 07:40:00 - 08:10:00 -56
Fall River/Burney 07:55:05 -26.3 Dark Down 30.2 185.4 Up 07:40:05 - 08:10:05 -75
Greenville 07:55:03 -27.3 Dark Down 31.1 186.0 Up 07:40:03 - 08:10:03 -130
Gimple 07:55:03 -27.3 Dark Down 31.1 186.1 Up 07:40:03 - 08:10:03 -131
Quincy 07:55:03 -27.5 Dark Down 31.3 186.0 Up 07:40:03 - 08:10:03 -142
Portola 07:55:01 -27.6 Dark Down 31.4 186.5 Up 07:40:01 - 08:10:01 -152
Reno 07:54:59 -27.9 Dark Down 31.6 187.3 Up 07:39:59 - 08:09:59 -173
Carson City 07:54:59 -28.3 Dark Down 31.9 187.3 Up 07:39:59 - 08:09:59 -194
Gardnerville 07:54:59 -28.5 Dark Down 32.2 187.4 Up 07:39:59 - 08:09:59 -209
Yerington 07:54:57 -28.5 Dark Down 32.1 188.0 Up 07:39:57 - 08:09:57 -211
Hawthorne 07:54:55 -28.9 Dark Down 32.5 188.6 Up 07:39:55 - 08:09:55 -243
Lee Vining 07:54:56 -29.5 Dark Down 33.1 188.2 Up 07:39:56 - 08:09:56 -274
Dunrhomin 07:54:10 -26.2 Dark Down 28.0 202.6 Low 07:39:10 - 08:09:10 -287
Nikitin 07:54:10 -26.4 Dark Down 28.2 202.6 Low 07:39:10 - 08:09:10 -298
CU-SBO 07:54:11 -26.5 Dark Down 28.3 202.6 Low 07:39:11 - 08:09:11 -300
Bishop 07:54:54 -30.1 Dark Down 33.6 189.0 Up 07:39:54 - 08:09:54 -317
Beatty 07:54:48 -30.6 Dark Down 33.8 190.9 Up 07:39:48 - 08:09:48 -361
Patrick 07:54:37 -32.0 Dark Down 34.8 194.3 Up 07:39:37 - 08:09:37 -487
Laughlin/Bullhead City 07:54:39 -32.3 Dark Down 35.1 193.6 Up 07:39:39 - 08:09:39 -496
Wildwood 07:54:54 -33.4 Dark Down 36.8 189.2 Up 07:39:54 - 08:09:54 -530
Lake Havasu City 07:54:38 -32.9 Dark Down 35.7 194.0 Up 07:39:38 - 08:09:38 -544
Idyllwild 07:54:47 -33.7 Dark Down 36.9 191.4 Up 07:39:47 - 08:09:47 -571
George/Scottsdale 07:54:29 -33.5 Dark Down 36.0 196.9 Up 07:39:29 - 08:09:29 -625
Calipatria 07:54:42 -34.3 Dark Down 37.3 192.8 Up 07:39:42 - 08:09:42 -626
Yuma 07:54:39 -34.7 Dark Down 37.5 193.9 Up 07:39:39 - 08:09:39 -665

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 03LD9, (2024/07/07 07:56UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 29.47 128
Nunki          18:55:15.9 -26:17:49  2.0  9.32 160
PPM 234652     18:31:26.3 -18:24:10  5.0  0.35 154
PPM 234693     18:33:10.1 -18:22:06  7.2  0.22 154
PPM 234680     18:32:27.3 -18:21:23  9.4  0.22 154
03LD9          18:32:44.2 -18:34:03 15.5       154
Positions are for J2000

Event circumstances last updated at 2023/11/08 05:21:03 UT

Marc W. Buie, Southwest Research Institute

RECON