RECON: TNO occultation with 612148

Event between (612148) 00CG105 and star GA0860:04010274 with event index number of 2806672

Geocentric closest approach at 2023/12/24 11:02:11 UTC

J2000 position of star is 10:23:10.8 -02:53:02
Equinox of date position of star is 10:24:18.8 -02:59:51
Stellar brightness G=15.2, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 98 degrees from the moon. Moon is 93% illuminated.
TNO apparent brightness V=23.5

[RECON map]
TNO is 47.3 AU from the Sun and 46.9 AU from the Earth.
The TNO is moving 11.2 km/sec on the sky relative to the star, or, 1.2 arcsec/hr.
The 1-sigma error in the time of the event is 504 seconds.
The 1-sigma cross-track error in the shadow position is 5821 km.
The sky-plane scale is 34034.4 km/arcsec.

The TNO has an absolute magnitude Hv=6.6
Diameter=284.5 km assuming a 5% albedo -- 25.4 sec chord
Diameter=116.1 km assuming a 30% albedo -- 10.3 sec chord
Dynamical classification is SCATEXTD
 
 
 
 
 
 

Star training set for 612148, (2023/12/24 11:02UT)
Object            RA         Dec     mag  sep  mel
Regulus        10:09:38.8 +11:50:57  1.3 15.30  88
Alphard        09:28:46.0 -08:45:49  2.0 14.98  87
PPM 193381     10:24:45.6 -03:45:54  6.4  0.76  98
PPM 178168     10:25:02.0 -02:23:53  8.2  0.63  98
PPM 193379     10:24:43.9 -03:06:34  9.4  0.13  98
612148         10:24:23.9 -03:00:21 15.2        98
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 1.8 sigma about the mid-time.
The median site spacing is 18.5 km RECON observability=1.0 and success probability=3.8%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kamloops 11:01:19 -45.9 Dark Up 34.2 157.9 Up 10:46:19 - 11:16:19 9352
Victoria 11:01:46 -48.4 Dark Up 35.4 153.9 Up 10:46:46 - 11:16:46 9306
Peachland 11:01:19 -45.8 Dark Up 35.2 158.4 Up 10:46:19 - 11:16:19 9289
Kelowna 11:01:18 -45.6 Dark Up 35.2 158.8 Up 10:46:18 - 11:16:18 9288
Summerland 11:01:19 -45.8 Dark Up 35.4 158.5 Up 10:46:19 - 11:16:19 9279
Penticton 11:01:20 -45.8 Dark Up 35.5 158.6 Up 10:46:20 - 11:16:20 9273
Oliver 11:01:20 -45.9 Dark Up 35.8 158.5 Up 10:46:20 - 11:16:20 9253
Anarchist Mountain Observatory 11:01:20 -45.8 Dark Up 36.0 158.7 Up 10:46:20 - 11:16:20 9240
Tonasket 11:01:22 -46.0 Dark Up 36.3 158.5 Up 10:46:22 - 11:16:22 9224
Okanogan 11:01:24 -46.2 Dark Up 36.6 158.3 Up 10:46:24 - 11:16:24 9208
Brewster 11:01:27 -46.4 Dark Up 36.8 158.0 Up 10:46:27 - 11:16:27 9198
Manson/Chelan 11:01:30 -46.6 Dark Up 36.9 157.5 Up 10:46:30 - 11:16:30 9195
Wenatchee 11:01:33 -46.9 Dark Up 37.3 157.2 Up 10:46:33 - 11:16:33 9172
Ellensburg 11:01:36 -47.2 Dark Up 37.6 156.8 Up 10:46:36 - 11:16:36 9153
Yakima 11:01:37 -47.3 Dark Up 38.0 156.6 Up 10:46:37 - 11:16:37 9130
Toppenish/White Swan 11:01:38 -47.2 Dark Up 38.2 156.8 Up 10:46:38 - 11:16:38 9113
Sleaford 10:59:53 -37.0 Dark Up 34.9 175.1 Up 10:44:53 - 11:14:53 9095
Goldendale 11:01:43 -47.7 Dark Up 38.6 156.1 Up 10:46:43 - 11:16:43 9090
The Dalles 11:01:45 -48.0 Dark Up 38.7 155.6 Up 10:46:45 - 11:16:45 9086
Maupin 11:01:47 -48.0 Dark Up 39.1 155.6 Up 10:46:47 - 11:16:47 9058
PNWRO 11:01:29 -46.4 Dark Up 38.9 158.5 Up 10:46:29 - 11:16:29 9054
Sisters 11:01:54 -48.6 Dark Up 39.8 154.7 Up 10:46:54 - 11:16:54 9017
Bend 11:01:54 -48.4 Dark Up 40.1 155.0 Up 10:46:54 - 11:16:54 8996
Oregon Observatory 11:01:55 -48.6 Dark Up 40.2 154.7 Up 10:46:55 - 11:16:55 8988
North Lake 11:01:54 -48.3 Dark Up 41.0 155.2 Up 10:46:54 - 11:16:54 8934
Chiloquin 11:02:04 -49.2 Dark Up 41.3 153.8 Up 10:47:04 - 11:17:04 8915
Klamath Falls 11:02:04 -49.2 Dark Up 41.6 153.7 Up 10:47:04 - 11:17:04 8891
Lakeview 11:02:00 -48.2 Dark Up 42.1 155.5 Up 10:47:00 - 11:17:00 8852
Cedarville 11:01:57 -48.2 Dark Up 42.7 155.5 Up 10:46:57 - 11:16:57 8804
Fall River/Burney 11:02:07 -49.1 Dark Up 42.8 153.8 Up 10:47:07 - 11:17:07 8804
Susanville 11:02:05 -48.7 Dark Up 43.6 154.5 Up 10:47:05 - 11:17:05 8742
Greenville 11:02:08 -49.0 Dark Up 43.8 154.0 Up 10:47:08 - 11:17:08 8731
Gimple 11:02:08 -48.9 Dark Up 43.8 154.1 Up 10:47:08 - 11:17:08 8728
Quincy 11:02:14 -49.0 Dark Up 44.0 153.9 Up 10:47:14 - 11:17:14 8717
Portola 11:02:06 -48.7 Dark Up 44.2 154.5 Up 10:47:06 - 11:17:06 8695
Reno 11:02:05 -48.2 Dark Up 44.7 155.2 Up 10:47:05 - 11:17:05 8659
Carson City 11:02:05 -48.3 Dark Up 45.0 155.1 Up 10:47:05 - 11:17:05 8634
Gardnerville 11:02:05 -48.3 Dark Up 45.2 155.0 Up 10:47:05 - 11:17:05 8615
Yerington 11:02:01 -47.8 Dark Up 45.4 155.8 Up 10:47:01 - 11:17:01 8603
Hawthorne 11:01:58 -47.5 Dark Up 46.0 156.4 Up 10:46:58 - 11:16:58 8555
Lee Vining 11:02:05 -47.9 Dark Up 46.3 155.5 Up 10:47:05 - 11:17:05 8529
Tonopah 11:01:53 -46.4 Dark Up 46.8 158.1 Up 10:46:53 - 11:16:53 8482
Bishop 11:02:04 -47.4 Dark Up 47.1 156.2 Up 10:47:04 - 11:17:04 8465
Beatty 11:01:54 -46.2 Dark Up 48.0 158.3 Up 10:46:54 - 11:16:54 8384
Indian Springs 11:01:48 -45.3 Dark Up 48.6 159.7 Up 10:46:48 - 11:16:48 8328
Dunrhomin 11:00:20 -37.3 Dark Up 46.8 175.4 Up 10:45:20 - 11:15:20 8294
CU-SBO 11:00:23 -37.4 Dark Up 47.0 175.2 Up 10:45:23 - 11:15:23 8278
Henderson 11:01:44 -44.8 Dark Up 49.3 160.4 Up 10:46:44 - 11:16:44 8267
Wildwood 11:02:18 -47.7 Dark Up 50.0 154.5 Up 10:47:18 - 11:17:18 8225
Laughlin/Bullhead City 11:01:44 -44.5 Dark Up 50.3 160.7 Up 10:46:44 - 11:16:44 8188
Patrick 11:01:39 -43.9 Dark Up 50.2 161.8 Up 10:46:39 - 11:16:39 8186
Kingman/Dolan Springs 11:01:43 -44.1 Dark Up 50.4 161.5 Up 10:46:43 - 11:16:43 8174
Mohave Valley 11:01:50 -44.5 Dark Up 50.5 160.6 Up 10:46:50 - 11:16:50 8167
Idyllwild 11:02:05 -46.2 Dark Up 51.0 157.0 Up 10:47:05 - 11:17:05 8142
Lake Havasu City 11:01:50 -44.3 Dark Up 51.0 160.9 Up 10:46:50 - 11:16:50 8128
Parker 11:01:48 -44.2 Dark Up 51.3 160.7 Up 10:46:48 - 11:16:48 8099
Calipatria 11:02:01 -45.2 Dark Up 51.9 158.5 Up 10:47:01 - 11:17:01 8057
Yuma 11:01:55 -44.5 Dark Up 52.6 159.6 Up 10:46:55 - 11:16:55 7995
George/Scottsdale 11:01:29 -42.3 Dark Up 52.3 164.3 Up 10:46:29 - 11:16:29 7991

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 612148, (2023/12/24 11:02UT)
Object            RA         Dec     mag  sep  mel
Regulus        10:08:21.9 +11:58:02  1.3 15.30  88
Alphard        09:27:35.2 -08:39:30  2.0 14.98  87
PPM 193381     10:23:32.7 -03:38:34  6.4  0.76  98
PPM 178168     10:23:48.8 -02:16:34  8.2  0.63  98
PPM 193379     10:23:30.9 -02:59:15  9.4  0.13  98
612148         10:23:10.8 -02:53:02 15.2        98
Positions are for J2000

Event circumstances last updated at 2022/05/03 01:41:44 UT

Marc W. Buie, Southwest Research Institute

RECON