RECON: TNO occultation with 612524

Event between (612524) 02VD130 and star GA1140:03030479 with event index number of 2814203

Geocentric closest approach at 2024/11/20 12:05:57 UTC

J2000 position of star is 07:37:00.5 +25:25:09
Equinox of date position of star is 07:38:22.1 +25:22:04
Stellar brightness G=15.0, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 7 degrees from the moon. Moon is 75% illuminated.
TNO apparent brightness V=22.6

[RECON map]
TNO is 32.8 AU from the Sun and 32.2 AU from the Earth.
The TNO is moving 12.4 km/sec on the sky relative to the star, or, 1.9 arcsec/hr.
The 1-sigma error in the time of the event is 1070 seconds.
The 1-sigma cross-track error in the shadow position is 3491 km.
The sky-plane scale is 23341.7 km/arcsec.

The TNO has an absolute magnitude Hv=7.3
Diameter=206.1 km assuming a 5% albedo -- 16.7 sec chord
Diameter=84.1 km assuming a 30% albedo -- 6.8 sec chord
Dynamical classification is 2:1E+4:2II
 
 
 
 
 
 

Star training set for 612524, (2024/11/20 12:06UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:46:50.2 +27:57:51  1.1  3.20   6
PPM 097796     07:40:42.1 +24:09:50  6.0  1.30   7
PPM 097701     07:36:21.3 +24:53:46  8.2  0.68   8
PPM 097725     07:37:25.4 +24:51:00  9.2  0.57   7
PPM 097754     07:38:38.7 +25:22:40 11.1  0.03   7
612524         07:38:31.4 +25:21:43 15.0         7
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 0.8 sigma about the mid-time.
The median site spacing is 24.3 km RECON observability=1.0 and success probability=11.4%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Sleaford 12:05:18 -22.2 Dark Up 58.9 219.1 Up 11:50:18 - 12:20:18 5418
Kamloops 12:06:25 -31.1 Dark Up 64.2 194.6 Up 11:51:25 - 12:21:25 4912
Kelowna 12:06:17 -30.6 Dark Up 64.8 196.9 Up 11:51:17 - 12:21:17 4858
Peachland 12:06:18 -30.8 Dark Up 65.0 196.3 Up 11:51:18 - 12:21:18 4840
Summerland 12:06:17 -30.8 Dark Up 65.1 196.6 Up 11:51:17 - 12:21:17 4828
Penticton 12:06:16 -30.7 Dark Up 65.1 196.9 Up 11:51:16 - 12:21:16 4825
Oliver 12:06:15 -30.8 Dark Up 65.5 197.1 Up 11:51:15 - 12:21:15 4792
Anarchist Mountain Observatory 12:06:14 -30.6 Dark Up 65.6 197.6 Up 11:51:14 - 12:21:14 4781
Tonasket 12:06:13 -30.7 Dark Up 65.9 197.6 Up 11:51:13 - 12:21:13 4750
Okanogan 12:06:13 -30.8 Dark Up 66.3 197.5 Up 11:51:13 - 12:21:13 4714
Brewster 12:06:12 -31.0 Dark Up 66.6 197.3 Up 11:51:12 - 12:21:12 4683
Manson/Chelan 12:06:14 -31.3 Dark Up 66.8 196.6 Up 11:51:14 - 12:21:14 4654
Victoria 12:06:34 -33.3 Dark Up 66.7 189.1 Up 11:51:34 - 12:21:34 4635
Wenatchee 12:06:13 -31.4 Dark Up 67.3 196.5 Up 11:51:13 - 12:21:13 4605
Ellensburg 12:06:13 -31.6 Dark Up 67.8 196.3 Up 11:51:13 - 12:21:13 4559
Yakima 12:06:12 -31.6 Dark Up 68.2 196.5 Up 11:51:12 - 12:21:12 4520
PNWRO 12:06:01 -30.5 Dark Up 68.4 200.9 Up 11:51:01 - 12:21:01 4508
Toppenish/White Swan 12:06:11 -31.5 Dark Up 68.3 197.1 Up 11:51:11 - 12:21:11 4503
Goldendale 12:06:11 -31.9 Dark Up 68.9 196.5 Up 11:51:11 - 12:21:11 4439
The Dalles 12:06:13 -32.1 Dark Up 69.2 195.7 Up 11:51:13 - 12:21:13 4408
Dunrhomin 12:04:19 -20.5 Dark Up 66.6 237.2 Up 11:49:19 - 12:19:19 4393
Maupin 12:06:11 -32.1 Dark Up 69.6 196.3 Up 11:51:11 - 12:21:11 4370
CU-SBO 12:04:19 -20.6 Dark Up 66.8 237.5 Up 11:49:19 - 12:19:19 4366
Sisters 12:06:12 -32.5 Dark Up 70.6 195.7 Up 11:51:12 - 12:21:12 4271
Bend 12:06:09 -32.3 Dark Up 70.7 196.5 Up 11:51:09 - 12:21:09 4254
Oregon Observatory 12:06:09 -32.4 Dark Up 70.9 196.3 Up 11:51:09 - 12:21:09 4234
North Lake 12:06:04 -32.1 Dark Up 71.4 198.3 Up 11:51:04 - 12:21:04 4185
Lakeview 12:05:57 -31.7 Dark Up 72.3 200.9 Up 11:50:57 - 12:20:57 4096
Chiloquin 12:06:07 -32.8 Dark Up 72.3 196.3 Up 11:51:07 - 12:21:07 4092
Klamath Falls 12:06:07 -32.8 Dark Up 72.6 196.8 Up 11:51:07 - 12:21:07 4060
Cedarville 12:05:55 -31.6 Dark Up 72.9 202.1 Up 11:50:55 - 12:20:55 4035
Fall River/Burney 12:06:01 -32.5 Dark Up 73.6 199.1 Up 11:51:01 - 12:21:01 3953
Susanville 12:05:55 -32.0 Dark Up 74.0 202.1 Up 11:50:55 - 12:20:55 3911
Gimple 12:05:54 -32.2 Dark Up 74.4 201.8 Up 11:50:54 - 12:20:54 3877
Greenville 12:05:54 -32.2 Dark Up 74.4 201.5 Up 11:50:54 - 12:20:54 3875
Portola 12:05:51 -31.9 Dark Up 74.5 203.4 Up 11:50:51 - 12:20:51 3855
Quincy 12:05:54 -32.2 Dark Up 74.6 201.8 Up 11:50:54 - 12:20:54 3854
Reno 12:05:44 -31.4 Dark Up 74.6 205.8 Up 11:50:44 - 12:20:44 3847
Carson City 12:05:45 -31.4 Dark Up 74.9 206.5 Up 11:50:45 - 12:20:45 3812
Yerington 12:05:40 -30.9 Dark Up 74.8 208.8 Up 11:50:40 - 12:20:40 3811
Gardnerville 12:05:44 -31.3 Dark Up 75.1 207.0 Up 11:50:44 - 12:20:44 3789
Hawthorne 12:05:35 -30.5 Dark Up 75.1 211.2 Up 11:50:35 - 12:20:35 3780
Tonopah 12:05:25 -29.4 Dark Up 74.8 216.4 Up 11:50:25 - 12:20:25 3777
Lee Vining 12:05:37 -30.8 Dark Up 75.7 210.8 Up 11:50:37 - 12:20:37 3709
Indian Springs 12:05:09 -28.1 Dark Up 75.2 224.2 Up 11:50:09 - 12:20:09 3677
Beatty 12:05:16 -29.0 Dark Up 75.5 220.3 Up 11:50:16 - 12:20:16 3675
Bishop 12:05:30 -30.2 Dark Up 75.9 214.3 Up 11:50:30 - 12:20:30 3671
Henderson 12:05:04 -27.5 Dark Up 75.2 227.5 Up 11:50:04 - 12:20:04 3646
Patrick 12:04:53 -26.6 Dark Up 74.9 232.0 Up 11:49:53 - 12:19:53 3621
Kingman/Dolan Springs 12:04:55 -26.7 Dark Up 75.2 232.2 Up 11:49:55 - 12:19:55 3593
Laughlin/Bullhead City 12:04:57 -27.1 Dark Up 75.5 231.0 Up 11:49:57 - 12:19:57 3573
Mohave Valley 12:04:57 -27.1 Dark Up 75.7 231.8 Up 11:49:57 - 12:19:57 3546
George/Scottsdale 12:04:32 -24.8 Dark Up 74.5 241.5 Up 11:49:32 - 12:19:32 3522
Lake Havasu City 12:04:52 -26.8 Dark Up 75.8 233.7 Up 11:49:52 - 12:19:52 3514
Parker 12:04:51 -26.8 Dark Up 76.0 234.9 Up 11:49:51 - 12:19:51 3479
Idyllwild 12:05:07 -28.7 Dark Up 77.8 229.8 Up 11:50:07 - 12:20:07 3357
Calipatria 12:04:56 -27.7 Dark Up 77.4 235.3 Up 11:49:56 - 12:19:56 3335
Wildwood 12:05:20 -30.2 Dark Up 78.6 222.5 Up 11:50:20 - 12:20:20 3332
Yuma 12:04:48 -26.9 Dark Up 77.0 239.1 Up 11:49:48 - 12:19:48 3322

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 612524, (2024/11/20 12:06UT)
Object            RA         Dec     mag  sep  mel
Pollux         07:45:17.9 +28:01:33  1.1  3.20   6
PPM 097796     07:39:12.0 +24:13:21  6.0  1.30   7
PPM 097701     07:34:50.6 +24:57:08  8.2  0.68   8
PPM 097725     07:35:54.8 +24:54:25  9.2  0.57   7
PPM 097754     07:37:07.8 +25:26:07 11.1  0.03   7
612524         07:37:00.5 +25:25:09 15.0         7
Positions are for J2000

Event circumstances last updated at 2022/05/03 23:53:51 UT

Marc W. Buie, Southwest Research Institute

RECON