RECON: TNO occultation with 463368

Event between (463368) 12VU85 and star GA1040:02364350 with event index number of 2278951

Geocentric closest approach at 2023/12/24 04:05:53 UTC

J2000 position of star is 06:49:24.2 +15:09:00
Equinox of date position of star is 06:50:45.9 +15:07:16
Stellar brightness G=15.8, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 46 degrees from the moon. Moon is 91% illuminated.
Apparent brightness V=20.8

[RECON map]
Object is 22.4 AU from the Sun and 21.5 AU from the Earth.
Apparent velocity is 23.2 km/sec on the sky relative to the star, or, 5.4 arcsec/hr.
The 1-sigma error in the time of the event is 323 seconds.
The 1-sigma cross-track error in the shadow position is 2618 km.
The sky-plane scale is 15581.4 km/arcsec.

The object has an absolute magnitude Hv=7.3
Diameter=208.9 km assuming a 5% albedo -- 9.0 sec chord
Diameter=85.3 km assuming a 30% albedo -- 3.7 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 463368, (2023/12/24 04:06UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:56:28.2 +07:24:34  0.4 15.38  36
Alhena         06:39:05.8 +16:22:36  1.9  3.08  42
33 Gem         06:51:12.6 +16:10:25  5.9  1.06  45
PPM 123148     06:52:37.1 +15:02:47  8.5  0.45  46
PPM 123098     06:50:57.5 +15:25:22 10.0  0.31  45
PPM 123069     06:49:58.0 +15:14:59 10.2  0.23  45
463368         06:50:46.4 +15:07:15 15.8        46
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 2.8 sigma about the mid-time.
The median site spacing is 22.9 km RECON observability=1.0 and success probability=2.7%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Kamloops 04:08:34 -38.0 Dark Up 25.5 97.2 Low 03:53:34 - 04:23:34 7853
Kelowna 04:08:36 -38.7 Dark Up 26.1 97.5 Low 03:53:36 - 04:23:36 7776
Peachland 04:08:37 -38.5 Dark Up 26.0 97.2 Low 03:53:37 - 04:23:37 7772
Summerland 04:08:37 -38.6 Dark Up 26.1 97.2 Low 03:53:37 - 04:23:37 7759
Penticton 04:08:38 -38.7 Dark Up 26.1 97.3 Low 03:53:38 - 04:23:38 7752
Victoria 04:08:45 -36.3 Dark Up 23.7 93.8 Low 03:53:45 - 04:23:45 7743
Sleaford 04:08:09 -46.2 Dark Up 33.8 110.4 Up 03:53:09 - 04:23:09 7730
Oliver 04:08:39 -38.7 Dark Up 26.2 97.1 Low 03:53:39 - 04:23:39 7725
Anarchist Mountain Observatory 04:08:39 -38.9 Dark Up 26.3 97.2 Low 03:53:39 - 04:23:39 7708
Okanogan 04:08:42 -38.8 Dark Up 26.3 96.7 Low 03:53:42 - 04:23:42 7661
Brewster 04:08:43 -38.7 Dark Up 26.2 96.4 Low 03:53:43 - 04:23:43 7643
Manson/Chelan 04:08:44 -38.5 Dark Up 25.9 96.0 Low 03:53:44 - 04:23:44 7633
Wenatchee 04:08:46 -38.5 Dark Up 25.9 95.7 Low 03:53:46 - 04:23:46 7598
Ellensburg 04:08:47 -38.4 Dark Up 25.8 95.3 Low 03:53:47 - 04:23:47 7569
Yakima 04:08:49 -38.4 Dark Up 25.8 95.1 Low 03:53:49 - 04:23:49 7537
Toppenish/White Swan 04:08:49 -38.6 Dark Up 25.9 95.1 Low 03:53:49 - 04:23:49 7516
The Dalles 04:08:53 -38.1 Dark Up 25.5 94.2 Low 03:53:53 - 04:23:53 7468
PNWRO 04:08:49 -39.6 Dark Up 27.0 96.1 Low 03:53:49 - 04:23:49 7458
Maupin 04:08:54 -38.2 Dark Up 25.6 94.0 Low 03:53:54 - 04:23:54 7431
Sisters 04:08:57 -37.9 Dark Up 25.3 93.3 Low 03:53:57 - 04:23:57 7368
Bend 04:08:58 -38.1 Dark Up 25.5 93.4 Low 03:53:58 - 04:23:58 7343
Oregon Observatory 04:08:59 -38.0 Dark Up 25.4 93.2 Low 03:53:59 - 04:23:59 7331
Chiloquin 04:09:03 -37.8 Dark Up 25.2 92.3 Low 03:54:03 - 04:24:03 7228
Klamath Falls 04:09:04 -37.9 Dark Up 25.3 92.2 Low 03:54:04 - 04:24:04 7197
Cedarville 04:09:04 -39.1 Dark Up 26.5 92.9 Low 03:54:04 - 04:24:04 7104
Fall River/Burney 04:09:07 -38.2 Dark Up 25.6 91.9 Low 03:54:07 - 04:24:07 7087
Greenville 04:09:09 -38.5 Dark Up 26.0 91.8 Low 03:54:09 - 04:24:09 6998
Gimple 04:09:08 -38.6 Dark Up 26.0 91.8 Low 03:54:08 - 04:24:08 6997
Quincy 04:09:10 -38.5 Dark Up 26.0 91.7 Low 03:54:10 - 04:24:10 6980
Portola 04:09:09 -38.9 Dark Up 26.4 91.9 Low 03:54:09 - 04:24:09 6959
Reno 04:09:09 -39.4 Dark Up 26.9 92.2 Low 03:54:09 - 04:24:09 6922
Carson City 04:09:11 -39.4 Dark Up 26.9 92.0 Low 03:54:11 - 04:24:11 6890
Gardnerville 04:09:11 -39.5 Dark Up 26.9 91.9 Low 03:54:11 - 04:24:11 6867
Yerington 04:09:10 -39.9 Dark Up 27.4 92.3 Low 03:54:10 - 04:24:10 6859
Hawthorne 04:09:11 -40.4 Dark Up 27.8 92.4 Low 03:54:11 - 04:24:11 6805
Lee Vining 04:09:13 -40.0 Dark Up 27.5 91.8 Low 03:54:13 - 04:24:13 6765
Dunrhomin 04:08:41 -50.4 Dark Up 37.8 102.9 Up 03:53:41 - 04:23:41 6699
Bishop 04:09:13 -40.5 Dark Up 28.1 92.0 Low 03:54:13 - 04:24:13 6694
Nikitin 04:08:41 -50.4 Dark Up 37.8 102.8 Up 03:53:41 - 04:23:41 6682
CU-SBO 04:08:41 -50.4 Dark Up 37.8 102.7 Up 03:53:41 - 04:23:41 6678
Beatty 04:09:12 -41.8 Dark Up 29.4 92.7 Low 03:54:12 - 04:24:12 6617
Patrick 04:09:10 -44.2 Dark Up 31.8 93.6 Up 03:54:10 - 04:24:10 6415
Laughlin/Bullhead City 04:09:13 -43.6 Dark Up 31.2 93.1 Up 03:54:13 - 04:24:13 6407
Wildwood 04:09:22 -40.3 Dark Up 28.0 90.1 Low 03:54:22 - 04:24:22 6393
Lake Havasu City 04:09:13 -43.8 Dark Up 31.5 92.8 Up 03:54:13 - 04:24:13 6337
Idyllwild 04:09:19 -41.9 Dark Up 29.6 91.0 Low 03:54:19 - 04:24:19 6317
Calipatria 04:09:19 -42.8 Dark Up 30.6 91.3 Up 03:54:19 - 04:24:19 6232
George/Scottsdale 04:09:10 -45.9 Dark Up 33.6 93.8 Up 03:54:10 - 04:24:10 6210
Yuma 04:09:19 -43.5 Dark Up 31.3 91.6 Up 03:54:19 - 04:24:19 6171

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 463368, (2023/12/24 04:06UT)
Object            RA         Dec     mag  sep  mel
Betelgeuse     05:55:10.3 +07:24:26  0.4 15.38  36
Alhena         06:37:42.8 +16:23:57  1.9  3.08  42
33 Gem         06:49:49.8 +16:12:10  5.9  1.06  45
PPM 123148     06:51:14.9 +15:04:35  8.5  0.45  46
PPM 123098     06:49:35.1 +15:27:07 10.0  0.31  45
PPM 123069     06:48:35.7 +15:16:41 10.2  0.23  45
463368         06:49:24.2 +15:09:00 15.8        46
Positions are for J2000

Event circumstances last updated at 2023/11/05 04:13:40 UT

Marc W. Buie, Southwest Research Institute

RECON