RECON: TNO occultation with 03LD9

Event between 03LD9 and star GA0700:25360154 with event index number of 1663177

Geocentric closest approach at 2023/05/27 06:30:41 UTC

J2000 position of star is 18:30:25.3 -18:45:05
Equinox of date position of star is 18:31:47.4 -18:44:02
Stellar brightness G=15.9, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 125 degrees from the moon. Moon is 47% illuminated.
Apparent brightness V=23.0

[RECON map]
Object is 43.2 AU from the Sun and 42.3 AU from the Earth.
Apparent velocity is 20.3 km/sec on the sky relative to the star, or, 2.4 arcsec/hr.
The 1-sigma error in the time of the event is 1016 seconds.
The 1-sigma cross-track error in the shadow position is 3939 km.
The sky-plane scale is 30707.5 km/arcsec.

The object has an absolute magnitude Hv=6.6
Diameter=295.1 km assuming a 5% albedo -- 14.6 sec chord
Diameter=120.5 km assuming a 30% albedo -- 5.9 sec chord
Dynamical classification is SCATNEAR
 
 
 
 
 
 

Star training set for 03LD9, (2023/05/27 06:31UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:50.8 -26:28:55  0.9 28.89  98
Nunki          18:56:42.9 -26:15:56  2.0  9.47 131
PPM 234623     18:31:34.4 -18:42:43  5.5  0.06 125
PPM 234645     18:32:41.3 -18:53:31  7.1  0.26 125
PPM 234623     18:31:34.4 -18:42:43  5.5  0.06 125
03LD9          18:31:47.8 -18:44:01 15.9       125
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 **** km RECON observability=0.1 and success probability=1.1%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Sleaford 06:32:54 -16.4 AT Up 10.8 141.0 Really Low 06:17:54 - 06:47:54 10467
Kamloops 06:33:31 -15.7 AT Up 5.5 128.8 Really Low 06:18:31 - 06:48:31 10142
Kelowna 06:33:31 -16.6 AT Up 6.4 129.5 Really Low 06:18:31 - 06:48:31 10117
Peachland 06:33:33 -16.7 AT Up 6.4 129.2 Really Low 06:18:33 - 06:48:33 10105
Summerland 06:33:33 -16.8 AT Up 6.5 129.3 Really Low 06:18:33 - 06:48:33 10099
Penticton 06:33:33 -16.9 AT Up 6.6 129.4 Really Low 06:18:33 - 06:48:33 10097
Oliver 06:33:34 -17.2 AT Up 6.8 129.3 Really Low 06:18:34 - 06:48:34 10078
Anarchist Mountain Observatory 06:33:35 -17.4 AT Up 7.0 129.5 Really Low 06:18:35 - 06:48:35 10073
Okanogan 06:33:37 -18.0 Dark Up 7.3 129.2 Really Low 06:18:37 - 06:48:37 10032
Brewster 06:33:38 -18.2 Dark Up 7.4 129.0 Really Low 06:18:38 - 06:48:38 10013
Manson/Chelan 06:33:40 -18.3 Dark Up 7.3 128.7 Really Low 06:18:40 - 06:48:40 9993
Wenatchee 06:33:43 -18.7 Dark Up 7.6 128.6 Really Low 06:18:43 - 06:48:43 9963
Victoria 06:33:44 -16.9 AT Up 5.2 126.2 Really Low 06:18:44 - 06:48:44 9961
Ellensburg 06:33:44 -19.1 Dark Up 7.7 128.4 Really Low 06:18:44 - 06:48:44 9934
PNWRO 06:33:42 -20.4 Dark Up 9.2 129.5 Really Low 06:18:42 - 06:48:42 9910
Yakima 06:33:45 -19.4 Dark Up 7.9 128.3 Really Low 06:18:45 - 06:48:45 9910
Toppenish/White Swan 06:33:45 -19.7 Dark Up 8.2 128.4 Really Low 06:18:45 - 06:48:45 9900
Dunrhomin 06:33:21 -28.2 Dark Up 20.3 139.7 Low 06:18:21 - 06:48:21 9837
The Dalles 06:33:49 -20.2 Dark Up 8.2 127.7 Really Low 06:18:49 - 06:48:49 9836
Nikitin 06:33:22 -28.4 Dark Up 20.4 139.6 Low 06:18:22 - 06:48:22 9825
CU-SBO 06:33:23 -28.5 Dark Up 20.4 139.5 Low 06:18:23 - 06:48:23 9819
Maupin 06:33:50 -20.6 Dark Up 8.5 127.8 Really Low 06:18:50 - 06:48:50 9813
Sisters 06:33:54 -21.3 Dark Up 8.8 127.3 Really Low 06:18:54 - 06:48:54 9748
Bend 06:33:53 -21.6 Dark Up 9.1 127.4 Really Low 06:18:53 - 06:48:53 9739
Oregon Observatory 06:33:55 -21.7 Dark Up 9.1 127.3 Really Low 06:18:55 - 06:48:55 9725
Chiloquin 06:33:59 -22.8 Dark Up 9.7 126.9 Really Low 06:18:59 - 06:48:59 9630
Klamath Falls 06:34:00 -23.2 Dark Up 10.0 126.9 Really Low 06:19:00 - 06:49:00 9610
Cedarville 06:34:00 -24.3 Dark Up 11.3 128.0 Really Low 06:19:00 - 06:49:00 9601
Fall River/Burney 06:34:03 -24.4 Dark Up 10.9 127.0 Really Low 06:19:03 - 06:49:03 9540
Gimple 06:34:04 -25.4 Dark Up 11.8 127.2 Really Low 06:19:04 - 06:49:04 9490
Greenville 06:34:05 -25.3 Dark Up 11.7 127.2 Really Low 06:19:05 - 06:49:05 9488
Portola 06:34:04 -25.8 Dark Up 12.2 127.5 Really Low 06:19:04 - 06:49:04 9477
Quincy 06:34:05 -25.5 Dark Up 11.8 127.2 Really Low 06:19:05 - 06:49:05 9474
Reno 06:34:04 -26.2 Dark Up 12.8 127.9 Really Low 06:19:04 - 06:49:04 9474
Yerington 06:34:03 -26.9 Dark Up 13.5 128.3 Really Low 06:19:03 - 06:49:03 9451
Carson City 06:34:05 -26.6 Dark Up 13.0 127.9 Really Low 06:19:05 - 06:49:05 9450
Gardnerville 06:34:05 -26.8 Dark Up 13.2 127.9 Really Low 06:19:05 - 06:49:05 9434
Hawthorne 06:34:03 -27.5 Dark Up 14.1 128.6 Really Low 06:19:03 - 06:49:03 9431
Lee Vining 06:34:06 -27.9 Dark Up 14.2 128.1 Really Low 06:19:06 - 06:49:06 9380
Beatty 06:34:03 -29.5 Dark Up 16.3 129.7 Really Low 06:19:03 - 06:49:03 9360
Bishop 06:34:06 -28.7 Dark Up 15.0 128.6 Really Low 06:19:06 - 06:49:06 9354
Patrick 06:33:58 -31.6 Dark Up 19.0 131.5 Really Low 06:18:58 - 06:48:58 9320
Laughlin/Bullhead City 06:34:00 -31.7 Dark Up 18.8 130.9 Really Low 06:19:00 - 06:49:00 9285
Lake Havasu City 06:34:02 -32.4 Dark Up 19.4 130.9 Really Low 06:19:02 - 06:49:02 9241
George/Scottsdale 06:33:56 -33.7 Dark Up 21.4 132.6 Low 06:18:56 - 06:48:56 9241
Idyllwild 06:34:10 -32.5 Dark Up 18.3 129.0 Really Low 06:19:10 - 06:49:10 9127
Calipatria 06:34:08 -33.4 Dark Up 19.5 129.7 Really Low 06:19:08 - 06:49:08 9108
Wildwood 06:34:14 -31.7 Dark Up 16.9 127.7 Really Low 06:19:14 - 06:49:14 9107
Yuma 06:34:07 -34.1 Dark Up 20.3 130.2 Low 06:19:07 - 06:49:07 9097

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, (2023/05/27 06:31UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 28.89  98
Nunki          18:55:15.9 -26:17:49  2.0  9.47 131
PPM 234623     18:30:11.9 -18:43:46  5.5  0.06 125
PPM 234645     18:31:18.8 -18:54:36  7.1  0.26 125
PPM 234623     18:30:11.9 -18:43:46  5.5  0.06 125
03LD9          18:30:25.3 -18:45:05 15.9       125
Positions are for J2000

Event circumstances last updated at 2023/04/18 02:26:05 UT

Marc W. Buie, Southwest Research Institute

RECON