RECON: TNO occultation with 523741

Event between (523741) 14TY85 and star GA1200:00929667 with event index number of 2323906

Geocentric closest approach at 2024/08/30 07:48:33 UTC

J2000 position of star is 04:29:09.9 +30:35:08
Equinox of date position of star is 04:30:41.1 +30:38:12
Stellar brightness G=15.5, use SENSEUP=128 with the MallinCam and and exposure time of 2 seconds with the QHY174 camera.
Star is 45 degrees from the moon. Moon is 13% illuminated.
Apparent brightness V=22.1

[RECON map]
Object is 32.8 AU from the Sun and 32.9 AU from the Earth.
Apparent velocity is 9.1 km/sec on the sky relative to the star, or, 1.4 arcsec/hr.
The 1-sigma error in the time of the event is 167 seconds.
The 1-sigma cross-track error in the shadow position is 1358 km.
The sky-plane scale is 23854.9 km/arcsec.

The object has an absolute magnitude Hv=6.7
Diameter=275.4 km assuming a 5% albedo -- 30.9 sec chord
Diameter=112.4 km assuming a 30% albedo -- 12.6 sec chord
Dynamical classification is CENTAURR
 
 
 
 
 
 

Star training set for 523741, (2024/08/30 07:45UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:37:20.3 +16:33:25  0.8 14.16  46
3Iot Aur       04:58:36.2 +33:12:10  2.7  6.44  38
PPM 069410     04:27:40.8 +31:29:33  5.3  1.08  45
PPM 069491     04:34:27.8 +31:50:10  8.5  1.44  44
PPM 069446     04:31:40.9 +30:35:05  9.9  0.21  44
523741         04:30:43.8 +30:38:18 15.5        44
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 5.0 sigma about the mid-time.
The median site spacing is 3.6 km RECON observability=0.4 and success probability=0.0%
Site Site mid-time
(UT)
Sun alt
(deg)
Sky Moon Star alt
(deg)
Star az
(deg)
Target Observing Time
(UT)
X-track
(km)
Quincy 07:48:22 -41.1 Dark Down 17.6 64.5 Really Low 07:33:58 - 08:02:45 13150
Greenville 07:48:23 -40.9 Dark Down 17.7 64.5 Really Low 07:33:59 - 08:02:46 13147
Fall River/Burney 07:48:33 -40.0 Dark Down 17.8 64.6 Really Low 07:34:10 - 08:02:57 13147
Gimple 07:48:23 -40.9 Dark Down 17.7 64.6 Really Low 07:33:59 - 08:02:46 13145
Portola 07:48:25 -41.3 Dark Down 17.9 64.7 Really Low 07:34:02 - 08:02:49 13140
Klamath Falls 07:48:50 -38.8 Dark Down 18.1 64.7 Really Low 07:34:27 - 08:03:14 13138
Chiloquin 07:48:51 -38.5 Dark Down 18.2 64.8 Really Low 07:34:27 - 08:03:14 13135
Gardnerville 07:48:05 -42.2 Dark Down 17.9 64.8 Really Low 07:33:42 - 08:02:29 13130
Carson City 07:48:16 -42.0 Dark Down 18.0 64.9 Really Low 07:33:52 - 08:02:39 13129
Reno 07:48:14 -41.6 Dark Down 18.2 64.9 Really Low 07:33:50 - 08:02:37 13126
Lee Vining 07:47:57 -43.2 Dark Down 17.9 64.8 Really Low 07:33:34 - 08:02:21 13122
Wildwood 07:47:12 -47.1 Dark Down 16.5 63.9 Really Low 07:32:48 - 08:01:35 13121
Yerington 07:48:08 -42.2 Dark Down 18.4 65.1 Really Low 07:33:45 - 08:02:32 13115
Cedarville 07:48:33 -39.6 Dark Down 18.8 65.4 Really Low 07:34:10 - 08:02:57 13111
Bishop 07:47:47 -43.8 Dark Down 18.2 65.0 Really Low 07:33:23 - 08:02:10 13106
Hawthorne 07:47:58 -42.7 Dark Down 18.5 65.2 Really Low 07:33:35 - 08:02:22 13104
Oregon Observatory 07:49:05 -37.2 Dark Down 19.0 65.5 Really Low 07:34:42 - 08:03:29 13102
Sisters 07:49:08 -36.8 Dark Down 19.1 65.5 Really Low 07:34:45 - 08:03:32 13097
Bend 07:49:07 -37.0 Dark Down 19.2 65.6 Really Low 07:34:44 - 08:03:31 13096
Maupin 07:49:16 -35.9 Dark Down 19.8 66.1 Really Low 07:34:52 - 08:03:39 13068
Idyllwild 07:47:04 -47.5 Dark Down 17.7 64.6 Really Low 07:32:41 - 08:01:28 13065
The Dalles 07:49:19 -35.5 Dark Down 19.9 66.2 Really Low 07:34:55 - 08:03:42 13061
Beatty 07:47:37 -44.3 Dark Down 19.1 65.6 Really Low 07:33:13 - 08:02:00 13061
Victoria 07:50:00 -32.5 Dark Down 19.8 65.9 Really Low 07:35:37 - 08:04:24 13034
Toppenish/White Swan 07:49:26 -34.8 Dark Down 20.8 67.0 Low 07:35:02 - 08:03:49 13026
Yakima 07:49:32 -34.6 Dark Down 20.8 67.0 Low 07:35:09 - 08:03:56 13025
Calipatria 07:46:51 -48.1 Dark Down 18.3 64.9 Really Low 07:32:28 - 08:01:15 13025
Ellensburg 07:49:36 -34.1 Dark Down 20.9 67.1 Low 07:35:13 - 08:04:00 13015
Wenatchee 07:49:43 -33.7 Dark Down 21.3 67.4 Low 07:35:20 - 08:04:07 13000
PNWRO 07:49:22 -35.2 Dark Down 21.6 67.8 Low 07:34:59 - 08:03:46 12999
Laughlin/Bullhead City 07:47:14 -46.0 Dark Down 20.0 66.0 Really Low 07:32:50 - 08:01:37 12996
Yuma 07:46:47 -48.5 Dark Down 18.8 65.2 Really Low 07:32:24 - 08:01:11 12994
Lake Havasu City 07:47:05 -46.7 Dark Down 19.9 65.9 Really Low 07:32:41 - 08:01:28 12987
Manson/Chelan 07:49:44 -33.3 Dark Down 21.5 67.7 Low 07:35:20 - 08:04:07 12985
Patrick 07:47:12 -45.7 Dark Down 20.6 66.4 Low 07:32:49 - 08:01:36 12972
Brewster 07:49:46 -33.1 Dark Down 21.9 68.0 Low 07:35:23 - 08:04:10 12971
Okanogan 07:49:44 -32.8 Dark Down 22.1 68.3 Low 07:35:20 - 08:04:07 12959
Anarchist Mountain Observatory 07:49:54 -32.2 Dark Down 22.5 68.7 Low 07:35:31 - 08:04:18 12938
Oliver 07:49:56 -32.0 Dark Down 22.4 68.6 Low 07:35:33 - 08:04:20 12937
Summerland 07:50:05 -31.6 Dark Down 22.5 68.7 Low 07:35:41 - 08:04:28 12928
Penticton 07:50:01 -31.7 Dark Down 22.6 68.8 Low 07:35:37 - 08:04:24 12928
Peachland 07:50:08 -31.4 Dark Down 22.5 68.8 Low 07:35:45 - 08:04:32 12926
Kelowna 07:50:08 -31.3 Dark Down 22.8 69.0 Low 07:35:45 - 08:04:32 12916
Kamloops 07:50:12 -30.5 Dark Down 22.5 68.7 Low 07:35:48 - 08:04:35 12912
George/Scottsdale 07:46:48 -47.3 Dark Down 21.4 66.7 Low 07:32:24 - 08:01:11 12899
CU-SBO 07:47:44 -40.1 Dark Down 28.7 72.6 Low 07:33:20 - 08:02:07 12635
Nikitin 07:47:46 -40.0 Dark Down 28.7 72.7 Low 07:33:22 - 08:02:09 12631
Dunrhomin 07:47:47 -39.8 Dark Down 28.8 72.8 Low 07:33:24 - 08:02:11 12629
Sleaford 07:50:01 -28.3 Dark Up 31.5 79.4 Up 07:35:37 - 08:04:24 12479

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 523741, (2024/08/30 07:45UT)
Object            RA         Dec     mag  sep  mel
Aldebaran      04:35:55.3 +16:30:29  0.8 14.16  46
3Iot Aur       04:56:59.6 +33:09:58  2.7  6.44  38
PPM 069410     04:26:06.4 +31:26:18  5.3  1.08  45
PPM 069491     04:32:52.9 +31:47:08  8.5  1.44  44
PPM 069446     04:30:07.1 +30:31:58  9.9  0.21  44
523741         04:29:09.9 +30:35:08 15.5        45
Positions are for J2000

Event circumstances last updated at 2023/12/22 05:48:08 UT

Marc W. Buie, Southwest Research Institute

RECON