RECON: TNO occultation with 612688

Event between (612688) 03UT292 and star GA0960:02023496 with event index number of 2816865

Geocentric closest approach at 2024/03/27 03:58:53 UTC

J2000 position of star is 06:36:37.5 +06:29:22
Equinox of date position of star is 06:37:49.5 +06:28:10
Stellar brightness G=17.0, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 107 degrees from the moon. Moon is 97% illuminated.
TNO apparent brightness V=21.7

[RECON map]
TNO is 27.7 AU from the Sun and 27.6 AU from the Earth.
The TNO is moving 9.0 km/sec on the sky relative to the star, or, 1.6 arcsec/hr.
The 1-sigma error in the time of the event is 186 seconds.
The 1-sigma cross-track error in the shadow position is 3579 km.
The sky-plane scale is 20053.1 km/arcsec.

The TNO has an absolute magnitude Hv=7.1
Diameter=231.2 km assuming a 5% albedo -- 25.7 sec chord
Diameter=94.4 km assuming a 30% albedo -- 10.5 sec chord
Dynamical classification is 3:2E
 
 
 
 
 
 

Star training set for 612688, (2024/03/27 03:59UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:56:29.1 +07:24:34  0.4 10.33 117
Alhena         06:39:06.7 +16:22:35  1.9  9.91 108
PPM 150846     06:37:43.8 +06:03:41  6.5  0.41 107
PPM 150845     06:37:41.1 +06:12:51  9.1  0.26 107
PPM 150855     06:37:58.6 +06:38:17 10.9  0.17 107
612688         06:37:55.7 +06:28:03 17.0       107
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 4.8 sigma about the mid-time.
The median site spacing is 22.5 km RECON observability=1.0 and success probability=10.4%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Victoria 04:07:10 -15.3 AT Down 43.2 214.1 Up 03:52:10 - 04:22:10 -3155
Kamloops 04:07:34 -16.3 AT Down 40.3 216.9 Up 03:52:34 - 04:22:34 -3160
Peachland 04:07:33 -17.1 AT Down 40.8 218.1 Up 03:52:33 - 04:22:33 -3261
Kelowna 04:07:33 -17.2 AT Down 40.5 218.4 Up 03:52:33 - 04:22:33 -3268
Summerland 04:07:32 -17.2 AT Down 40.8 218.3 Up 03:52:32 - 04:22:32 -3277
Penticton 04:07:32 -17.3 AT Down 40.8 218.4 Up 03:52:32 - 04:22:32 -3288
Oliver 04:07:26 -17.4 AT Down 41.1 218.6 Up 03:52:26 - 04:22:26 -3315
Anarchist Mountain Observatory 04:07:28 -17.6 AT Down 41.2 218.9 Up 03:52:28 - 04:22:28 -3338
Tonasket 04:07:28 -17.7 AT Down 41.4 219.0 Up 03:52:28 - 04:22:28 -3358
Okanogan 04:07:26 -17.8 AT Down 41.8 219.0 Up 03:52:26 - 04:22:26 -3375
Manson/Chelan 04:07:20 -17.6 AT Down 42.4 218.6 Up 03:52:20 - 04:22:20 -3381
Brewster 04:07:22 -17.8 AT Down 42.1 218.9 Up 03:52:22 - 04:22:22 -3385
Wenatchee 04:07:17 -17.7 AT Down 42.8 218.6 Up 03:52:17 - 04:22:17 -3408
Ellensburg 04:07:13 -17.7 AT Down 43.3 218.6 Up 03:52:13 - 04:22:13 -3427
Yakima 04:07:11 -17.9 AT Down 43.6 218.8 Up 03:52:11 - 04:22:11 -3456
Toppenish/White Swan 04:07:11 -18.1 Dark Down 43.7 219.1 Up 03:52:11 - 04:22:11 -3482
The Dalles 04:07:02 -17.9 AT Down 44.7 218.6 Up 03:52:02 - 04:22:02 -3496
Goldendale 04:07:03 -18.0 Dark Down 44.3 218.9 Up 03:52:03 - 04:22:03 -3500
Maupin 04:07:00 -18.1 Dark Down 44.9 218.9 Up 03:52:00 - 04:22:00 -3533
Sisters 04:06:50 -18.1 Dark Down 45.9 218.8 Up 03:51:50 - 04:21:50 -3570
PNWRO 04:07:16 -19.2 Dark Up 43.3 221.2 Up 03:52:16 - 04:22:16 -3594
Bend 04:06:51 -18.4 Dark Down 45.9 219.3 Up 03:51:51 - 04:21:51 -3603
Oregon Observatory 04:06:49 -18.3 Dark Down 46.1 219.3 Up 03:51:49 - 04:21:49 -3609
Chiloquin 04:06:39 -18.5 Dark Down 47.4 219.6 Up 03:51:39 - 04:21:39 -3681
North Lake 04:06:47 -19.0 Dark Down 46.4 220.4 Up 03:51:47 - 04:21:47 -3689
Sleaford 04:08:40 -23.3 Dark Up 32.8 232.5 Up 03:53:40 - 04:23:40 -3709
Klamath Falls 04:06:35 -18.7 Dark Down 47.6 219.9 Up 03:51:35 - 04:21:35 -3712
Lakeview 04:06:41 -19.7 Dark Up 46.9 221.8 Up 03:51:41 - 04:21:41 -3802
Fall River/Burney 04:06:30 -19.4 Dark Down 48.3 221.2 Up 03:51:30 - 04:21:30 -3823
Cedarville 04:06:40 -20.1 Dark Up 47.3 222.5 Up 03:51:40 - 04:21:40 -3862
Susanville 04:06:29 -20.2 Dark Up 48.4 222.6 Up 03:51:29 - 04:21:29 -3917
Greenville 04:06:26 -20.1 Dark Up 48.8 222.4 Up 03:51:26 - 04:21:26 -3919
Gimple 04:06:23 -20.1 Dark Up 48.7 222.5 Up 03:51:23 - 04:21:23 -3925
Quincy 04:06:24 -20.1 Dark Up 48.9 222.6 Up 03:51:24 - 04:21:24 -3934
Portola 04:06:23 -20.5 Dark Up 48.8 223.3 Up 03:51:23 - 04:21:23 -3974
Reno 04:06:30 -21.1 Dark Up 48.6 224.4 Up 03:51:30 - 04:21:30 -4035
Carson City 04:06:26 -21.2 Dark Up 48.9 224.7 Up 03:51:26 - 04:21:26 -4064
Gardnerville 04:06:26 -21.4 Dark Up 49.0 224.9 Up 03:51:26 - 04:21:26 -4085
Yerington 04:06:27 -21.8 Dark Up 48.6 225.6 Up 03:51:27 - 04:21:27 -4119
Hawthorne 04:06:24 -22.3 Dark Up 48.7 226.6 Up 03:51:24 - 04:21:24 -4187
Lee Vining 04:06:16 -22.2 Dark Up 49.4 226.5 Up 03:51:16 - 04:21:16 -4200
Bishop 04:06:17 -22.9 Dark Up 49.3 227.9 Up 03:51:17 - 04:21:17 -4292
Tonopah 04:06:31 -23.6 Dark Up 48.1 228.8 Up 03:51:31 - 04:21:31 -4313
Beatty 04:06:23 -24.3 Dark Up 48.6 230.3 Up 03:51:23 - 04:21:23 -4431
Indian Springs 04:06:30 -25.3 Dark Up 48.2 231.9 Up 03:51:30 - 04:21:30 -4525
Wildwood 04:05:51 -23.9 Dark Up 51.7 230.5 Up 03:50:51 - 04:20:51 -4530
Henderson 04:06:30 -26.0 Dark Up 48.0 233.1 Up 03:51:30 - 04:21:30 -4610
Idyllwild 04:05:58 -25.5 Dark Up 50.6 233.1 Up 03:50:58 - 04:20:58 -4682
Laughlin/Bullhead City 04:06:21 -26.6 Dark Up 48.3 234.3 Up 03:51:21 - 04:21:21 -4705
Mohave Valley 04:06:21 -26.8 Dark Up 48.5 234.6 Up 03:51:21 - 04:21:21 -4728
Patrick 04:06:28 -27.1 Dark Up 47.7 234.9 Up 03:51:28 - 04:21:28 -4730
Kingman/Dolan Springs 04:06:26 -27.0 Dark Up 47.9 234.9 Up 03:51:26 - 04:21:26 -4736
Lake Havasu City 04:06:22 -27.1 Dark Up 48.5 235.2 Up 03:51:22 - 04:21:22 -4775
Dunrhomin 04:07:44 -30.8 Dark Up 39.1 240.2 Up 03:52:44 - 04:22:44 -4805
Parker 04:06:16 -27.3 Dark Up 48.7 235.6 Up 03:51:16 - 04:21:16 -4805
Calipatria 04:06:01 -26.7 Dark Up 50.2 235.1 Up 03:51:01 - 04:21:01 -4807
CU-SBO 04:07:42 -30.9 Dark Up 39.3 240.3 Up 03:52:42 - 04:22:42 -4822
Yuma 04:06:02 -27.6 Dark Up 49.8 236.5 Up 03:51:02 - 04:21:02 -4899
George/Scottsdale 04:06:26 -29.3 Dark Up 47.2 238.6 Up 03:51:26 - 04:21:26 -4991

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 612688, (2024/03/27 03:59UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:55:10.3 +07:24:26  0.4 10.33 117
Alhena         06:37:42.8 +16:23:56  1.9  9.91 108
PPM 150846     06:36:25.9 +06:05:00  6.5  0.41 107
PPM 150845     06:36:23.1 +06:14:09  9.1  0.26 107
PPM 150855     06:36:40.3 +06:39:36 10.9  0.17 107
612688         06:36:37.5 +06:29:22 17.0       107
Positions are for J2000

Event circumstances last updated at 2022/05/03 02:05:20 UT

Marc W. Buie, Southwest Research Institute

RECON