RECON: TNO occultation with 03LD9

Event between 03LD9 and star GA0700:24427337 with event index number of 1663257

Geocentric closest approach at 2023/07/02 05:58:29 UTC

J2000 position of star is 18:27:38.8 -18:45:22
Equinox of date position of star is 18:29:01.0 -18:44:24
Stellar brightness G=16.4, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 16 degrees from the moon. Moon is 98% illuminated.
Apparent brightness V=22.9

[RECON map]
Object is 43.2 AU from the Sun and 42.2 AU from the Earth.
Apparent velocity is 24.6 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 702 seconds.
The 1-sigma cross-track error in the shadow position is 3968 km.
The sky-plane scale is 30609.0 km/arcsec.

The object has an absolute magnitude Hv=6.6
Diameter=295.1 km assuming a 5% albedo -- 12.0 sec chord
Diameter=120.5 km assuming a 30% albedo -- 4.9 sec chord
Dynamical classification is SCATNEAR
 
 
 
 
 
 

Star training set for 03LD9, (2023/07/02 05:59UT)
Object            RA         Dec     mag  sep  mel
Antares        16:30:51.1 -26:28:56  0.9 28.28  13
Nunki          18:56:43.2 -26:15:55  2.0  9.87  19
PPM 234623     18:31:34.7 -18:42:42  5.5  0.60  16
PPM 234550     18:28:35.0 -18:56:16  8.4  0.22  16
03LD9          18:29:01.7 -18:44:23 16.4        16
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 1.3 sigma about the mid-time.
The median site spacing is 19.6 km RECON observability=0.7 and success probability=0.7%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Sleaford 05:58:58 -13.4 AT Up 18.2 167.0 Really Low 05:43:58 - 06:13:58 11528
Kamloops 05:59:36 -11.2 NT Up 16.5 153.0 Really Low 05:44:36 - 06:14:36 11397
Kelowna 05:59:36 -12.2 AT Up 17.5 153.8 Really Low 05:44:36 - 06:14:36 11370
Peachland 05:59:37 -12.2 AT Up 17.5 153.5 Really Low 05:44:37 - 06:14:37 11363
Summerland 05:59:37 -12.4 AT Up 17.7 153.5 Really Low 05:44:37 - 06:14:37 11358
Penticton 05:59:36 -12.5 AT Up 17.8 153.6 Really Low 05:44:36 - 06:14:36 11356
Oliver 05:59:37 -12.8 AT Up 18.1 153.6 Really Low 05:44:37 - 06:14:37 11341
Anarchist Mountain Observatory 05:59:37 -13.0 AT Up 18.3 153.7 Really Low 05:44:37 - 06:14:37 11335
Okanogan 05:59:38 -13.5 AT Up 18.8 153.4 Really Low 05:44:38 - 06:14:38 11304
Brewster 05:59:39 -13.7 AT Up 19.0 153.2 Really Low 05:44:39 - 06:14:39 11291
Victoria 05:59:39 -12.1 AT Up 17.5 149.9 Really Low 05:44:39 - 06:14:39 11279
Manson/Chelan 05:59:39 -13.7 AT Up 19.1 152.8 Really Low 05:44:39 - 06:14:39 11278
Wenatchee 05:59:39 -14.1 AT Up 19.4 152.6 Really Low 05:44:39 - 06:14:39 11255
Ellensburg 05:59:39 -14.4 AT Up 19.7 152.3 Really Low 05:44:39 - 06:14:39 11234
Yakima 05:59:39 -14.7 AT Up 20.1 152.2 Low 05:44:39 - 06:14:39 11215
Toppenish/White Swan 05:59:39 -15.0 AT Up 20.3 152.3 Low 05:44:39 - 06:14:39 11206
PNWRO 05:59:39 -15.8 AT Up 21.1 153.7 Low 05:44:39 - 06:14:39 11200
The Dalles 05:59:39 -15.3 AT Up 20.8 151.5 Low 05:44:39 - 06:14:39 11161
Maupin 05:59:39 -15.7 AT Up 21.2 151.5 Low 05:44:39 - 06:14:39 11142
Sisters 05:59:39 -16.3 AT Up 21.8 150.8 Low 05:44:39 - 06:14:39 11094
Bend 05:59:39 -16.6 AT Up 22.1 151.0 Low 05:44:39 - 06:14:39 11084
Oregon Observatory 05:59:39 -16.7 AT Up 22.2 150.9 Low 05:44:39 - 06:14:39 11074
Chiloquin 05:59:54 -17.7 AT Up 23.2 150.3 Low 05:44:54 - 06:14:54 10996
Klamath Falls 05:59:54 -18.0 Dark Up 23.5 150.3 Low 05:44:54 - 06:14:54 10978
Dunrhomin 05:59:04 -24.9 Dark Up 29.9 166.6 Low 05:44:04 - 06:14:04 10975
Nikitin 05:59:04 -25.1 Dark Up 30.1 166.5 Up 05:44:04 - 06:14:04 10965
CU-SBO 05:59:05 -25.1 Dark Up 30.1 166.4 Up 05:44:05 - 06:14:05 10961
Cedarville 05:59:39 -19.2 Dark Up 24.7 151.6 Low 05:44:39 - 06:14:39 10958
Fall River/Burney 05:59:55 -19.2 Dark Up 24.7 150.4 Low 05:44:55 - 06:14:55 10915
Gimple 05:59:55 -20.2 Dark Up 25.7 150.7 Low 05:44:55 - 06:14:55 10868
Greenville 05:59:55 -20.1 Dark Up 25.6 150.6 Low 05:44:55 - 06:14:55 10867
Quincy 05:59:55 -20.3 Dark Up 25.8 150.6 Low 05:44:55 - 06:14:55 10855
Portola 05:59:53 -20.6 Dark Up 26.1 151.0 Low 05:44:53 - 06:14:53 10853
Reno 05:59:52 -21.1 Dark Up 26.6 151.6 Low 05:44:52 - 06:14:52 10843
Carson City 05:59:53 -21.4 Dark Up 26.9 151.5 Low 05:44:53 - 06:14:53 10822
Yerington 05:59:51 -21.8 Dark Up 27.3 152.1 Low 05:44:51 - 06:14:51 10816
Gardnerville 05:59:53 -21.6 Dark Up 27.1 151.5 Low 05:44:53 - 06:14:53 10807
Hawthorne 05:59:39 -22.4 Dark Up 27.9 152.4 Low 05:44:39 - 06:14:39 10796
Lee Vining 05:59:52 -22.7 Dark Up 28.2 151.8 Low 05:44:52 - 06:14:52 10754
Bishop 05:59:50 -23.5 Dark Up 29.0 152.4 Low 05:44:50 - 06:14:50 10723
Beatty 05:59:39 -24.6 Dark Up 30.0 153.9 Up 05:44:39 - 06:14:39 10709
Patrick 05:59:38 -26.9 Dark Up 32.3 156.5 Up 05:44:38 - 06:14:38 10635
Laughlin/Bullhead City 05:59:39 -26.9 Dark Up 32.3 155.7 Up 05:44:39 - 06:14:39 10613
Lake Havasu City 05:59:39 -27.6 Dark Up 33.0 155.8 Up 05:44:39 - 06:14:39 10570
George/Scottsdale 05:59:33 -29.2 Dark Up 34.5 158.2 Up 05:44:33 - 06:14:33 10535
Wildwood 05:59:55 -26.3 Dark Up 31.8 151.3 Up 05:44:55 - 06:14:55 10506
Idyllwild 05:59:39 -27.4 Dark Up 32.9 153.1 Up 05:44:39 - 06:14:39 10503
Calipatria 05:59:39 -28.4 Dark Up 33.8 154.1 Up 05:44:39 - 06:14:39 10468
Yuma 05:59:39 -29.1 Dark Up 34.6 155.0 Up 05:44:39 - 06:14:39 10445

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, (2023/07/02 05:59UT)
Object            RA         Dec     mag  sep  mel
Antares        16:29:24.4 -26:25:56  0.9 28.28  13
Nunki          18:55:15.9 -26:17:49  2.0  9.87  19
PPM 234623     18:30:11.9 -18:43:46  5.5  0.60  16
PPM 234550     18:27:12.0 -18:57:14  8.4  0.22  16
03LD9          18:27:38.8 -18:45:22 16.4        16
Positions are for J2000

Event circumstances last updated at 2023/04/18 02:28:45 UT

Marc W. Buie, Southwest Research Institute

RECON