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 18:33:54.2 -18:33:05
Stellar brightness G=15.5, use SENSEUP=128
Star is 154 degrees from the moon. Moon is 2% illuminated.
TNO apparent brightness V=22.9

[RECON map]
TNO is 43.4 AU from the Sun and 42.4 AU from the Earth.
The TNO is moving 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 3674 km.
The sky-plane scale is 30722.6 km/arcsec.

The TNO 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 14.1 km RECON observability=1.0 and success probability=7.9%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Clarence Fulton 07:55:00 -17.2 AT Down 20.9 187.1 Low 07:40:00 - 08:10:00 360
Kelowna 07:55:00 -17.6 AT Down 21.3 187.0 Low 07:40:00 - 08:10:00 345
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
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
Tonasket 07:55:00 -18.8 Dark Down 22.4 187.1 Low 07:40:00 - 08:10:00 295
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
Entiat 07:55:02 -19.8 Dark Down 23.5 186.3 Low 07:40:02 - 08:10:02 254
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
Pasco 07:54:58 -21.2 Dark Down 24.9 187.5 Low 07:39:58 - 08:09:58 180
Goldendale 07:55:03 -21.6 Dark Down 25.4 185.8 Low 07:40:03 - 08:10:03 171
PNWRO 07:54:57 -21.5 Dark Down 25.1 187.8 Low 07:39:57 - 08:09:57 167
The Dalles 07:55:04 -21.8 Dark Down 25.7 185.4 Low 07:40:04 - 08:10:04 162
Maupin 07:55:04 -22.2 Dark Down 26.1 185.6 Low 07:40:04 - 08:10:04 141
Sisters 07:55:06 -23.1 Dark Down 27.0 185.1 Low 07:40:06 - 08:10:06 100
Redmond 07:55:04 -23.1 Dark Down 27.0 185.5 Low 07:40:04 - 08:10:04 97
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
La Pine/Gilchrist 07:55:05 -23.7 Dark Down 27.6 185.2 Low 07:40:05 - 08:10:05 69
North Lake 07:55:03 -24.2 Dark Down 28.0 185.9 Low 07:40:03 - 08:10:03 42
Paisley 07:55:02 -24.7 Dark Down 28.5 186.3 Low 07:40:02 - 08:10:02 10
Klamath Falls 07:55:06 -25.1 Dark Down 29.1 185.0 Low 07:40:06 - 08:10:06 -7
Lakeview 07:55:01 -25.2 Dark Down 29.0 186.5 Low 07:40:01 - 08:10:01 -19
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
Susanville 07:55:02 -27.0 Dark Down 30.8 186.3 Up 07:40:02 - 08:10:02 -116
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 -153
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 -195
Gardnerville 07:54:59 -28.5 Dark Down 32.2 187.4 Up 07:39:59 - 08:09:59 -210
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 -244
Lee Vining 07:54:56 -29.5 Dark Down 33.1 188.2 Up 07:39:56 - 08:09:56 -274
Tonopah 07:54:50 -29.4 Dark Down 32.7 190.3 Up 07:39:50 - 08:09:50 -284
Niwot 07:54:10 -26.4 Dark Down 28.2 202.6 Low 07:39:10 - 08:09:10 -295
SwRI 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
Indian Springs 07:54:44 -30.9 Dark Down 34.0 192.1 Up 07:39:44 - 08:09:44 -393
CPSLO 07:55:01 -32.1 Dark Down 35.9 186.7 Up 07:40:01 - 08:10:01 -433
Henderson 07:54:41 -31.4 Dark Down 34.4 193.0 Up 07:39:41 - 08:09:41 -434
Searchlight/Boulder City 07:54:41 -32.0 Dark Down 34.9 193.1 Up 07:39:41 - 08:09:41 -472
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
Kingman/Dolan Springs 07:54:37 -32.2 Dark Down 35.0 194.2 Up 07:39:37 - 08:09:37 -500
Mohave Valley 07:54:39 -32.5 Dark Down 35.4 193.6 Up 07:39:39 - 08:09:39 -515
DCO 07:54:34 -32.2 Dark Down 34.9 195.2 Up 07:39:34 - 08:09:34 -515
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
Parker 07:54:38 -33.3 Dark Down 36.1 194.1 Up 07:39:38 - 08:09:38 -569
Idyllwild 07:54:47 -33.7 Dark Down 36.9 191.4 Up 07:39:47 - 08:09:47 -571
Blythe 07:54:39 -33.8 Dark Down 36.6 193.8 Up 07:39:39 - 08:09:39 -601
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 2019/12/01 23:14:36 UT

Marc W. Buie, Southwest Research Institute

RECON